- Type of paper
: Paper in book
Title:
- Authors:
- Marguš, Drago (95182)
- Editors
- Shumway, S.E.
Publisher: Elsevier Sci. Pub.
Year: 1991
Pages: from 789 to 793
Number of references: 6
Language: engleski
Other: Serija knjiga: Dev. in Aquaculture and Fisheries Sci., No. 21
- Type of paper
: Paper in book
Title:
- Authors:
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- McLean, Ewen
- Tomec, Marija (74116)
- Čož-Rakovac, Rozelinda (153555)
- Editors
- Cloud, J.G.
- Thorgaard, G.H.
Publisher: Plenum Pres
Year: 1993
Pages: from 243 to 251
Number of references: 31
Language: engleski
- Type of paper
: Paper in journal
Title:
- Authors:
- Teskeredžić, Emin (49394)
- Donaldson, Edward M.
- Teskeredžić, Zlatica (84301)
- McLean, Ewen
- Solar, I.I.
Journal: Can. Techn. Rep. Fish Aquatic Sci.
ISSN: 0706-6457
Volume: 1785
Year: 1991
Pages: from 1 to 7
Number of references: 17
Language: engleski
Summary: This study was conducted to compare the efficacy of
a
commercially available, thermal and thermal-electro shocking
device as method of inducing triploidy in coho salmon. Socks
were applied to eggs for varying duration, 30 minutes post-
fertilization. percent triploid induction was evaluated by
flow cytometric analysis. Triploi rates of 100% were
produced following combined heat-electro socks of 10-20
minutes duration. Percent survival of treated eggs was
evaluated with reference to control treatments, at the stage
of first exogenous feeding. Greatest triploid rate (100%),
and highest percent survival (49.2%), were obtained
following thermal-electro shock treatment of 10 minutes
duration.
Keywords: triploidy, heat shock, electro shock, coho salmon, sterility
- Type of paper
: Paper in journal
Title: Ten years work of Laboratory of aquaculture, IRB at
Šibenik area
- Authors:
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
Journal: Morsko ribarstvo
Number: 2
ISSN: 027 -1209
Volume: 43
Year: 1991
Pages: from 56 to 61
Number of references: 33
Language: hrvatski
- Type of paper
: Paper in journal
Title: Aquaculture of salmonids at the east coast of the Adriatic
sea in 1991-1995
- Authors:
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- Tomec, Marija (74116)
- Hacmanjek, Mato (47715)
Journal: Morsko ribarstvo
Number: 2
ISSN: 027 -1209
Volume: 43
Year: 1991
Pages: from 51 to 56
Number of references: 22
Language: hrvatski
- Type of paper
: Paper in journal
Title: Shellfishes (Bivalvia) of the river Krka estuary
- Authors:
- Marguš, Drago (95182)
- Teskeredžić, Emin (49394)
- Modrušan, Zvonko (4142)
- Tomec, Marija (74116)
- Teskeredžić, Zlatica (84301)
- Hacmanjek, Mato (47715)
Journal: Pomorski zbornik
Number: 1
ISSN: 0554-6397
Volume: 29
Year: 1991
Pages: from 421 to 436
Number of references: 23
Language: hrvatski
Summary: The estuary of the river Krka is natural
phenomenon
featuring specific hydrogeological conditions and extremely
rich flora and fauna. Investigations of qualitative and
quantitative structure of shellfish populations living in
the estuary were carried out at seven localities within Krka
National Park in August 1988. Shellfish specimens were
collected by diving at an area ranging from 200 to 500 m2
from the surface down to 20 m depth. In the material
collected, 53 shellfish species were determined from 27
families. Only mussel, as euryhaline species, was found at
all seven locatlities. Natural shellfish population
structure as well as biometric data indicate that commercial
exploitation is possible. Also, the whole aquatory is
suitable for controlled culture of economically important
species.
Keywords: river Krka estuary, shellfishes, culture possibility
- Type of paper
: Paper in journal
Title: Settlement of the artificial habitations as a method of
the fishery improvement
- Authors:
- Modrušan, Zvonko (4142)
- Teskeredžić, Emin (49394)
- Marguš, Drago (95182)
Journal: Morsko ribarstvo
Number: 4
ISSN: 0027-1209
Volume: 43
Year: 1991
Pages: from 135 to 142
Number of references: 34
Language: hrvatski
Summary: The paper gives a survey of installing
artificial
habitations all around the world, as a way of fishing
improvement, with special review of artificial gorges and
clefts of concrete elements, car tyres and ship shells, as
well as on experience in Mediterranean countries.
Keywords: artificial habitations, improvement of fishery
- Type of paper
: Paper in journal
Title: Ranching of the Adriatic Sea with marked seabass fry
- Authors:
- Teskeredžić, Emin (49394)
- Modrušan, Zvonko (4142)
- Hacmanjek, Mato (47715)
Journal: Morsko ribarstvo
Number: 3
ISSN: 0027-1209
Volume: 43
Year: 1991
Pages: from 108 to 111
Number of references: 10
Language: hrvatski
Keywords: Adriatic Sea, ranching, marked seabass fry
- Type of paper
: Paper in journal
Title:
- Authors:
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
- Hacmanjek, Mato (47715)
- McLean, Ewen
- Teskeredžić, Zlatica (84301)
- Donaldson, Edward M.
Journal: Riv. It. Piscis. Ittiop.
Number: 1
Volume: 26
Year: 1991
Pages: from 131 to 135
Number of references: 23
Language: talijanski
Summary: The effect of varying doses of porcine somatotropin
(pST)
upon growth and body composition of leather carp, maintained
at sub-optimal temperature, was examined following 8 weeks
therapy. Doses of 1 and 2 ug pST/g body wt/wk had no effect
upon fish growth when compared with saline injected
(control) animals. However, weekly injection of 4 ug pST/g
body wt/wk significantly (p<0.05) accelerated growth rates.
Irrespective of dose given, pST therapy increased condition
factors (p<0.05) over that exhibited at the start of the
experiment and when compared to control treatments. pST
therapy significantly (p<0.05) decreased body lipid
composition when compared to saline injected carp. pST
treatment had no effect upon percentage moisture levels
between groups; thereby demonstrating that the observed
increases in body weight of the 4 ug pST/g/wk group
represented true tissue growth.
Keywords: porcine somatotropin therapy, carp, the growth effect
- Type of paper
: Paper in journal
Title:
- Authors:
- Marguš, Drago (95182)
Journal: Oebalia
Volume: 17
Year: 1991
Pages: from 209 to 220
Language: engleski
Summary: Shell growth and survival were studied in Mussel
Mytilus
galloprovincialis, in relation to water temperature,
salinity and dissolved oxygen level, at three sites
(Skradin, Vrulje Bay and Martinska Bay), in the Krka River
estuary.
The growth rates of Mytilus galloprovincialis reported in
this study are among the highest rates recorded in the
Adriatic Sea. The time to achieve a mean lenght of 60 mm,
starting from 25 to 30 mm was estimated at 12-14 months.
Variations in growth of mussels, at different depths, were
correlated with water temperature and salinity levels.
Mussels grew fastest at a temperature from 22 to 23oC, and
at salinity values somewath above 30o/oo. A strong
correlation was demonstrated between mussel survival rate
and salinity variations. Mortalities first occured when
salinity decreased below 20o/oo, with a 100% mortality rate
during long periods of exposure to 10o/oo.
Keywords: mussel, growth, survival, Krka estuary, Adriatic
- Type of paper
: Paper in journal
Title:
- Authors:
- Modrušan, Zvonko (4142)
- Teskeredžić, Emin (49394)
- Marguš, Drago (95182)
Journal: Oebalia
Volume: 17
Year: 1991
Pages: from 145 to 157
Language: engleski
Summary: This paper concerns a life-cycle study of Liza ramada
and
Chelon labrosus.
Males of both species reach first maturity at the end
of their second year of life (L. ramada at 21.5 cm and C.
labrosus at 22.5 cm of total length). First maturity of
femals is reached during their third year of life at 24.5
and 29.9 cm, respectively.
Seasonal veriations of gonadosomatic index (GSI) show
maximum values in male (1.24) and female (4.61) of L. Ramada
in October. The peak GSI values in male (2.62) and female
(7.18) of C. labrosus were found in November.
The estimated values of GSI and the absence of mature
fish inside the estuary during late autumn and winter months
indicate that L. ramada and C. labrosus leave the feeding
areas, for spawing into the open sea. Their return
migrations which take place at the end of winter and in
spring, complete annual cycle.
Keywords: Liza, Chelon, life-cycle, Adriatic
- Type of paper
: Paper in journal
Title: Utilization of plant proteins in feeding of rainbow
- Authors:
- Teskeredžić, Zlatica (84301)
- Higgs, D.
- Dosanjh, B.
- McBride, J.
- Teskeredžić, Emin (49394)
Journal: Ribarstvo
Number: 1
ISSN: 1330-016
Volume: 47
Year: 1992
Pages: from 13 to 23
Number of references: 7
Language: hrvatski
Summary: This study was undertaken to assess the merits of
three
sources of rapeseed protein concentrate, (RPC;
undephytinazed, untreated control; undephytinazed, solvent
treated control; dephytinazed) as partial or total
replacement of steam-dried whole herring meal in a dry basal
diet for rainbow trout. All diets had about 43% protein, 18%
lipid and 3.9 kcal of metabolizable energy/g on a dry weight
basis. The three RPC sources each comprised about 19.2, 38.9
and 58.9% of dietary protein by replacement of 33.3, 66.6
and 100% herring meal protein. The appetite enhancer
Finnstim was included in all diets at 1.5%. Each of 10 test
diets was fed to duplicate groups of 74-77 trout (initial
mean wt 4.3g) held in 10-10.3 oC well water, with flow rate
of 7.5 l/min on a natural photoperiod for 84 days. All group
were fed thei prescribed diet by hand to satiation three
times daily. Rainbow trout growth rate, appetite, feed
efficiency, mortality and health were not comprimised when
either the undephytinized control od dephytinized RPC
sources were substituted for 66% of the herring meal protein
in the basal diet. Replacement of all the fish meal protein
with each RPC source did not depress appetite, but did
significantly reduce growth rate and feed efficiency. The
procedure used to dephytinaze RPC significantly reduced the
quality of the RPC so that the benefits of phytate removal
were diminished. Strategies which may result in successful
total replacement of fish meal by RPC in trout diets are
provided.
Keywords: feeding, rapeseed protein concentrate, rainbow trout
- Type of paper
: Paper in journal
Title:
- Authors:
- McLean, Ewen
- Teskeredžić, Emin (49394)
- Donaldson, Edward M.
- Teskeredžić, Zlatica (84301)
- Cha, Y.
- Sittner, R.
- Pitt, C.
Journal: Aquaculture
ISSN: 0044-8486
Volume: 103
Year: 1992
Pages: from 377 to 387
Language: engleski
Summary: First groups of coho salmon (6.70+4.7 g wet weight)
wereimplanted with one of four types of somatotropin-containingslow-release
pellects or a placebo. Follwing implantation, thegrowth response of cach
group was recorded over 6 months. Allgroups in receipt of
recombinant-porcine-somatrotropin (rpst)therapy exhibited significant
growth acceleration (37-83% greaterthan controls, P<0.05). Rpst therapy has
a marked effect uponrelative intestinal length; but no effect upon
hepatorvisceral-somatic indices. At the end of the experimental period,allg
roups exhibited similar conditions factors percent bodymoisture and protein
content. However, between-group differencesin lipid content were recorded.
Keywords: coho salmon, growth, porcine somatrotropin
- Type of paper
: Paper in journal
Title: Investigation of culture possibility of shellfishes in the
Sonte bay (Cres island)
- Authors:
- Marguš, Drago (95182)
- Teskeredžić, Emin (49394)
- Modrušan, Zvonko (4142)
Journal: Morsko ribarstvo
Number: 2
ISSN: 0027-1209
Volume: 44
Year: 1992
Pages: from 49 to 54
Number of references: 27
Language: hrvatski
Summary: In the research work on possibilities of
shellfish
cultivation in the cove Sonte carried out whitin the period
of 1988-1989, were comprised 4 kinds of shellfish: mussels
(Mytilus galloprovincialis), common oyster (Ostrea edulis),
great scallop (Pecten jacobaeus) and Noarh' ark (Arca Noae).
The results obtained indicated a possibility of cultivating
Common Oyster under control, while cultivation of Mussels,
due to thei growth being slowed down and increased
mortality, proved not profitable. The researched area can be
used only as a temporary location for live mussels
transported from other cultivation areas.
Keywords: shellfishes, culture possibility, Cres island
- Type of paper
: Paper in journal
Title: Aquaculture of oysters (Crassostrea gigas Thunberg, 1793)
in Japan. II. Cultivation
- Authors:
- Marguš, Drago (95182)
- Teskeredžić, Emin (49394)
Journal: Morsko ribarstvo
Number: 4
ISSN: 0027-1209
Volume: 44
Year: 1992
Pages: from 120 to 125
Language: hrvatski
Summary: The cultivation of oysters under control was intriduced in
Japan in the 17th
century in the Hiroshima Province. The tehnology of oysters
cultivation there is devided into
two phases:
1) gathering and cultivation of smelt
2) cultivation up to the commercial size.
The annual yield of oysters amount to over 250.000 tons. The
development of techniques
of oysters cultivation up to the commercial size is
outlined, the cultivation techniques and
equpments described. Also an account of seasonal activites
in this cultivation is given and
main problems encountered in the oysters cultivation up to
their commercial size are
specified.
Keywords: oysters, Japan, culture
- Type of paper
: Paper in journal
Title: Dynamics of phytoplankton of a cyprinid fish pond
- Authors:
- Tomec, Marija (74116)
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
- Hacmanjek, Mato (47715)
Journal: Ribarstvo
Number: 3
ISSN: 1330-016
Volume: 47
Year: 1992
Pages: from 79 to 88
Number of references: 34
Language: hrvatski
Summary: Phytoplankton investigations were carried out from April
to
September, 1990, on two culture areas on the fish farms
Narta and Lipovljani. The ponds were mainly stocked with two
year old carp fry. Paralelly, a qualitative analysis of
phytoplankton was carried out, and measured were the primary
physico-chemical parameters. It was determined that the
obtained values ranged in the limits characteristic for
Cyprinid fish farms. In the qualitative components of the
phytoplankton a total of 143 plankton algae were determined,
which belong to the systematic families: Cyanophyta,
Euglenophyta, Pyrrophyta, Chrysophyta and Chlorophyta. In
the fish ponds of the fish farm Narta, the characteristic
phytoplankton communities are the Euglenaceae,
Chlorococcales, Melosira type, and on the fish ponds of fish
farm Lipovljani the characteristic phytoplankton communities
are the Diatomeae, Chlorococcales, Euglenaceae type. The
saprobity index values calculated according to the indicator
species on the investigated fish farm Narta ranged form 1.8
to 2.1, and on the fish ponds of the fish farm Lipovljani
from 1.9 to 2.2, within the limit of the beta-mesosaprobic
degree, that is the II class bonity.
Keywords: phytoplankton, saprobity, cyprinid fish ponds
- Type of paper
: Paper in journal
Title:
- Authors:
- Martinčić, Darko (29030)
- Kwokal, Željko (153623)
- Peharec, Željko (153634)
- Marguš, Drago (95182)
- Branica, Marko (5200)
Journal: Sci. Total Environ.
Volume: 119
Year: 1992
Pages: from 211 to 230
Language: engleski
Summary: Cultured one-year old mussels, Mytilus
galloprovincialis,
(Lmk.) were transplanted to four sites (120 individuals per
site) throughout the Krka River Estuary, and nearby Adriatic
coastal area. Concentrations of zinc, cadmium, lead and
copper, and their content in mussels were analysed four
times during 1988/89 (270 days). The body weight of mussels
increased during the period studied and a discernible effect
of the size of mussels on metal concentration was detected.
The concentrations of the metals studied, expressed on a per
unit dry weight, generally decreased with the body size and
the age of mussels, but no seasonal trends could be
established. The mussels transplanted to sites situated in
the vicinity of the Šibenik harbour accumulated zinc and
lead. This could be attributed to elevated concentrations of
zinc and lead in water (higher than 500 ng Zn 1-1 and 14 ng
Pb 1-1 of 'bioavailable' forms). Significant correlation
between body lead concentrations and lead amount in the
surrounding water was obtained, while for zinc, no
statistically significant relationship exists between body
concentrations and the water phase. The fluctuations of
cadmium and copper in the adjacent water have no significant
effect on the changes of their concentrations in the
transplanted mussels. The data obtained indicate that
because of biological similarities and better
reproducibility of the results the transplanted mussels are
more suitable for monitoring of trace metals than indigenous
mussel populations as originally proposed by the 'Mussel
Watch' programme.
Keywords: sea water, mussels, transplantation, trace metal concentration
- Type of paper
: Paper in journal
Title: Biogeochemical features of the Rogoznica lake
- Authors:
- Mihelčić, Goran (170045)
- Marguš, Drago (95182)
Journal: Pomorski zbornik
Number: 1
ISSN: 0554-6397
Volume: 30
Year: 1992
Pages: from 619 to 630
Language: hrvatski
Summary: The Rogoznica Lake (the Dragon's Eye) may be classified
as
an unique geomorphological and hidrological phenomenon,
characterized by a rare flora and fauna. The environmental
quality of the area should be protected as much as possible
against pollution as the result of the usurpation, private
enterprises and investment construction (i.e., building of
marina). The Rogoznica Lake and the surrounding landscape
must be publicly proclaimed as a natural park with a special
accent on preservation of natural resources.
Keywords: Rogoznica lake, biogeochemical features
- Type of paper
: Paper in journal
Title: Spread, density and age structure of population of the
Pecten Jacobaeus L. and Chamys Varia L. in the Krka river estuary
- Authors:
- Marguš, Drago (95182)
- Teskeredžić, Emin (49394)
- Modrušan, Zvonko (4142)
- Hacmanjek, Mato (47715)
Journal: Pomorski zbornik
Number: 1
ISSN: 0554-6397
Volume: 30
Year: 1992
Pages: from 599 to 618
Language: hrvatski
Summary: Researches of the natural populations of the
Pecten
Jacobaeus L. in the Krka river estuary had been carried out
in December 1984 and September 1987 in 30 places extending
from the town of Skradin to the Martinska Cove, and Clamys
Varia L. in August 1988 in the localities from the Skradin
waterfalls to the Šibenik bridge. The samples of mussels had
been picked up by diving on the area of 200 to 500 aquare
meters in the depth of 25 meters. The established quantity
of mussels, geomorphological characteristics of the sea
bottom and the area of the researched aquatorium do not meet
conditions for organized, intensive and professional catches
of mussels by using larger fishing gears. The age structure
and biometric characteristics in researching mussel
population points out to a favourable status of the water
area for their normal life cycle as well as real
possibilities for the controlled cultivation.
Keywords: pectinids, the Krka river estuary
- Type of paper
: Paper in journal
Title: New tacsonomic names for nordpacific species of rainbow
trout
- Authors:
- Teskeredžić, Zlatica (84301)
Journal: Ribarstvo
Number: 3
ISSN: 1330-061
Volume: 47
Year: 1992
Pages: from 117 to 0
Number of references: 2
Language: hrvatski
- Type of paper
: Paper in journal
Title: Research work on the possiblity of the cultivation of
mussels (Mytilus galloprovincialis Lmk.) and common oysters (Ostrea edulis
L.) in cote Vlaška on the island Hvar
- Authors:
- Marguš, Drago (95182)
- Teskeredžić, Emin (49394)
- Modrušan, Zvonko (4142)
Journal: Morsko ribarstvo
Number: 1
ISSN: 0027-1209
Volume: 44
Year: 1992
Pages: from 17 to 22
Language: hrvatski
Summary: A research work of a possibility of cultivation of Mussels
andCommon Oysters under control in the cove Vlaška on the Isle ofHvar was
carried out within the period of 1985-1986. It comprisedgrowth, survival
and index of conditions of Mussels, as well asgrowth and survival of Common
Oysters. The results obtainedproved the possibility of organizing the
controlled cultivationof Common Oysters as a primary species, and to a
smaller extentof Mussels as a secondary species.
Keywords: culture, mussels, oysters, island Hvar
- Type of paper
: Paper in journal
Title:
- Authors:
- McLean, Ewen
- Donaldson, Edward M.
- Teskeredžić, Emin (49394)
- Souza, L.M.
Journal: Fish Physiol. Biochem.
Number: 1
Volume: 11
Year: 1993
Pages: from 363 to 369
Language: engleski
Summary: Diploid (2n) and triploid (3n) coho salmon were fed either
control, recombinant
porcine somatotropin (rpst)-supplemented (diet 1; 20 ug
rpst/g body wt/day) or
rpst/antacid/detergent-containing feed (diet 2; 20, 100 &
200 ug/g body wt/day respectively)
for 16 wk. Fish were weighed and measured bimonthly and
their relative performances
assessed. Four weeks after the start of the trial, 2n and 3n
groups fed diet 1 were
significantly heavier and longer than control 2n fish. By
the completion of the study, animals
fed diet 2 were greater in weight than all other treatment
groups. Diet 2 salmon also
demonstrated better feed conversion efficiencies than either
control or diet 1 groups. Rpst
therapy induced a 28.7% and 60.2% increase in group wt for
diet 1 and 2 3n coho versus
(-vs-) controls. Likewise, 2n rpst-treated fish increased wt-
vs-2n control coho by 17% and
50% respectively over the same period. No differences were
recorded between groups for
body moisture, but diet 1, 3n and both diet 2 groups
exhibited decreased condition factors
when compared to control fish (P<0.05).
Keywords: porcine somatotropin, diploids, triploids, growth
- Type of paper
: Paper in journal
Title:
- Authors:
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- Donaldson, Edward M.
- McLean, Ewen
- Solar, I.I.
Journal: Aquaculture
ISSN: 0044-8486
Volume: 116
Year: 1993
Pages: from 287 to 294
Number of references: 10
Language: engleski
Summary: The effectiveness of heat shocks in combination
with
electric shocks, derived from either alternating (AC) or
direct (DC) (10V), was compared with respect to thei ability
to induce triploidy in coho salmon. Electric shocks were
applied to eggs for 2.5, 5.0 and 10 min duration, and for
10, 20 and 40 min post-fertilization, at 10 and 26 oC.
Control eggs received identical handling and heat treatments
but without electric shocks. Treatment of developing embryos
with AC currents was more effective in including triploidy
than with DC current. AC shocks of 10 min duration,
delivered to eggs held at 26 oC, 40 min post-fertilization,
produced 100% triploidization versus 70% and 15% observed in
DC and control studies respectively. Ploidy states were
verified by flow cytometric analyses.
Keywords: triploidization, coho salmon, heat and electric shocks
- Type of paper
: Paper in journal
Title:
- Authors:
- Teskeredžić, Emin (49394)
- Donaldson, Edward M.
- Teskeredžić, Zlatica (84301)
- Solar, I.I.
- McLean, Ewen
Journal: Aquaculture
ISSN: 0044-8486
Volume: 117
Year: 1993
Pages: from 47 to 55
Number of references: 22
Language: engleski
Summary: Hydrostatic pressure or thermal shocks were administered
to
coho salmon eggs 20, 40, 60 and 80 min post-insemination.
Pressure shocks ranged from 6.2 to 8.4 x 10 4 kPa, andlasted
4 min. Thermal shocks ranged from 24 to 28 oC, and were
applied for duration of 10 and 2o min. Triploid induction
rate for each treatment group was evaluated by measurement
of erythrocyte DNA content using flow cytometric analysis.
Triploid rates of 100% were produced by pressure shocks of
6.9-8.3 x 10 4 kPa for egges 20 min post-fertilization and
by thermal trauma of 28 oC for 20 min, 20 min after
fertilization. Survival was inversely correlated with the
intensity of treatments. Thus, triploid yields calculated as
the product of the triploid rate and the numbers surviving
to hatch, expressed as a percentage of the number of eggs
originally present in the groups, were highest with a
hydrostatic pressure treatment of 6.2 x 10 4 kPa for 4 min
treatment, 20 and 40 min after fertilization or a heat shock
of 26 oC for 20 min treatment, 20 min after fertilization.
Keywords: triploidization, coho salmon, hydrostatic pressure and thermal shocks
- Type of paper
: Paper in journal
Title: Bacterial disease of the brown bullhead (Ameiurus
nebulosus L.)
- Authors:
- Teskeredžić, Emin (49394)
- Grahek, D.
- Malnar, Leon (103063)
- Teskeredžić, Zlatica (84301)
- Hacmanjek, Mato (47715)
Journal: Ribarstvo
Number: 1
ISSN: 1330-061
Volume: 48
Year: 1993
Pages: from 5 to 11
Number of references: 12
Language: hrvatski
Summary: Bacterial disease of the brown bullhead in culture
was
investigated. The fish were analyzed by standard clinical
examinations and pathoanatomical investigations. The disease
is characterized by the occurrence of a wound on the backs
and fins, and adhesions between the organs of the stomach
cavity. Bacteriological analyses (physiological and
biochemical characteristics of the bacteria) were analyzed
in samples of skin, fins, liver, spleen, heart and kidneys
of the diseased fish. Determined was the presence of the
bacteria Streptococcus faecalis subsp. liquefaciens, which
by antibiogramic tests showed the highest sensitivity to the
antibiotics oxytetraciklin and gentamycin.
Keywords: bacterial disease, brown bullhead
- Type of paper
: Paper in journal
Title: Reproductive cycle and monitoring of scallop larve (Pecten
jacobaeus L.) in plankton from the mouth of the river Krka
- Authors:
- Marguš, Drago (95182)
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- Tomec, Marija (74116)
Journal: Ribarstvo
Number: 2
ISSN: 1330-061
Volume: 48
Year: 1993
Pages: from 43 to 54
Number of references: 28
Language: hrvatski
Summary: The presence of Pectinidae and the development
of
aquaculture at the mouth of the river Krka inspired
investigations on the gonad index, seasonal changes of
tissue weight of the scallop (Pecten jacobaeus L.) as well
as the distribution of its larve in plankton of the river
mouth. The aim of this study was to learn about their
reproductive cycle and determine the possibility of
collecting young for controlled culture. Based on results of
investigations of the reproductive cycle it was determined
that the scallops spawn in the spring. The highest
occurrence of scallop larve in plankton was recorded in
temperatures of about 18 to 20oC and a salinity of above
30x10-3. The optimal time for collecting juvenille scallops,
at the mouth of the river Krka, for use in controlled
culture, is the period from March to July, and the optimal
depth for placing the collectors (on localities of 20 and
more meters) is between 10 and 15 meters.
Keywords: scallop, reproductive cycle
- Type of paper
: Paper in journal
Title: Reproduction cycle of the Chlamys varia L. and larvae
monitoring of the Pectinidae in plankton of the mouth of the river Krka
- Authors:
- Marguš, Drago (95182)
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- Tomec, Marija (74116)
Journal: Ribarstvo
Number: 4115
ISSN: 1330-061
Volume: 48
Year: 1993
Pages: from 115 to 124
Number of references: 31
Language: hrvatski
Summary: The development of aquaculture and the rich population
of
Chlamys varia L. -Pectinidae in the mouth of the river Krka
prompted investigations carried out on the condition indexes
and the occurence and distribution of larvae in the plankton
of the rivers mouth, to find out more about its reproductive
cycle and to determine the possibility to collect young for
use in controlled culture. Results of the investigations
showed that spawing of the Chlamys varia L. is of a dual
type, with a primary maximum in spring and a secondary
maximum in autumn. The most intensive occurence of the
larvae Pectinidae in plankton was recorded in temperatures
of from 18 to 20oC and at a salinity of above 30x10-3. The
optimal time for collecting young Chlamys varia L. in the
mouth of the river Krka, for use in controlled culture, is
the period between June and September, and the most
satisfactory depth for placing the collectors is at a depth
beetwen 10 and 15 m.
Keywords: Chlamys varia L., reproduction cycle
- Type of paper
: Paper in journal
Title: Nutrition and feeding methods of salmonidae as a
perequisite for the culture of healthy fish
- Authors:
- Teskeredžić, Zlatica (84301)
- Higgs, D.
- Dosanjh, B.
- Teskeredžić, Emin (49394)
Journal: Ribarstvo
Volume: 52
Year: 1994
Pages: from 33 to 46
Language: hrvatski
Keywords: Salmonidae, nutrition
- Type of paper
: Paper in journal
Title:
- Authors:
- McLean, Ewen
- Donaldson, Edward M.
- Mayer, I.
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- Pitt, C.
- Souza, L.M.
Journal: Aquaculture
Volume: 122
Year: 1994
Pages: from 359 to 368
Language: engleski
Keywords: coho salmon
- Type of paper
: Paper in journal
Title: Acid rain - a problem of the present
- Authors:
- Čož-Rakovac, Rozelinda (153555)
- Hacmanjek, Mato (47715)
- Teskeredžić, Zlatica (84301)
- Tomec, Marija (74116)
- Teskeredžić, Emin (49394)
- Sojat, V.
- Borovecki, D.
Journal: Ribarstvo
Volume: 53
Year: 1995
Pages: from 25 to 42
Language: hrvatski
Keywords: acid rain, fresh water
- Type of paper
: Paper in journal
Title:
- Authors:
- Teskeredžić, Zlatica (84301)
- Higgs, D.
- Dosanjh, B.
- McBride, J.
- Hardy, R.
- Beames, D.
- Jones, J.
- Simell, M.
- Vaara, T.
- Bridges, R.B.
Journal: Aquaculture
Volume: 131
Year: 1995
Pages: from 261 to 277
Language: engleski
Keywords: rapeseed protein concentrate, Oncorhynchus mykiss, feeding and nutrition fish, dietary value
- Type of paper
: Paper in journal
Title:
- Authors:
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
- Hacmanjek, Mato (47715)
- McLean, Ewen
Journal: Wat. Sci. Tech.
Volume: 31
Year: 1995
Pages: from 219 to 223
Language: engleski
Keywords: Body composition, feeding regime, food conversion efficiency, growth rainbow trout, ration level
- Type of paper
: Paper in journal
Title: Sea crabs diseases
- Authors:
- Smrkulj, Bojan (199658)
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
Journal: Morsko ribarstvo
ISSN: Ć -
Volume: 47
Year: 1995
Pages: from 7 to 11
Language: hrvatski
Keywords: sea crabs, diseases
- Type of paper
: Paper in journal
Title:
- Authors:
- Marguš, Drago (95182)
- Teskeredžić, Emin (49394)
Journal: Morsko ribarstvo
Volume: 44
Year: 1992
Pages: from 55 to 61
Language: hrvatski
Keywords: ozster, Japan, collection, smelt culture
- Type of paper
: Paper in proceedings
Title: The function of veterinary profession in aquaculture and
aquaristic
- Authors:
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- Editors
- Tadić, Marko
- Karlović, Maks
- Pogačnik, Milan
- Narat, Janez
- Anić, Vlasta
Proceedings title: Zbornik radova međunarodnog savjetovanja "Organizacija veterinarske prakse"
Language: hrvatski
Place: Zagreb
Year: 1991
ISBN/ISSN: 86-81045-01-6
Pages: from 156 to 162
Meeting: Organizacija veterinarske prakse
Held: from 05/17/91 to 05/18/91
Summary: Today it is quite clear that veterinary profession
hasn't
adequately recognized or met the needs of society in
aquaculture and aquaristics. These branches are developing
rapidly. In Yugoslavia we have all reasons to expect rapid
development of both branches, especially that of
aquaculture. Veterinarians in Yugoslavia are competent to
work in these branches.
Keywords: aquaculture, aquaristic, fish disease
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Higgs, D.
- Hardy, R.
- Teskeredžić, Zlatica (84301)
- Dosanjh, B.
- Forster, I.
- McBride, J.
- Jones, J.
- Beames, D.
- Editors
- McGregor, D.I.
Proceedings title: Proceedings of 8th International GCIRC Congress
Language: engleski
Place: Saskatoon, Kanada
Year: 1991
Pages: from 1612 to 1617
Meeting: 8th International GCIRC Congress
Held: from 07/09/91 to 07/11/91
Summary: The extent to which undephytinized (undephy) or
dephytinized
(dephy.) rapeseed protein concentrate (RPC) could replace
herring meal (HM) in formulated diets for rainbow trout was
assessed with or without various nutritional supplements.
Two experiments were conducted on trout held in 11-15oC
(E.1) or 10.2oC (E.2) fresh water for 54(E.1) or 84(E.2)
days. In E.1, undephy. RPC replaced either 0, 30 or 60% of
the HM protein and supplemental zinc was either 75, 150, or
225 (60% RPC level only) ppm. In E.2, three RPC sources
(undephy.; undephy., solvent- treated control; dephy)
replaced 0, 33.3, 66.6 or 100% of the HM protein and diets
contained Finnstim (FS; appetite stimulant). Collectively,
the results showed that (1) undephy. RPC or depty. RPC can
comprise about 38% of the dietary protein (fish meal 11% of
diet in E.2), (2) FS maintained trout appetite regardless of
diet treatment, (3) more than 75 ppm of supplemental zinc
was unnecessary and, (4) trout receiving depppphy. RPC had
normal mineral metabolism.
Keywords: nutrition, rainbow trout, rapeseed protein concentrate
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Marguš, Drago (95182)
- Editors
- Shumway, S.E.
- Sandifer, P.A.
Proceedings title: Scallop biology and culture
Language: engleski
Place: Portland, USA
Year: 1991
Pages: from 37 to 42
Meeting: 7th International Pectinid Workshop
Summary: Four species of occur in the 25-km long River Krka
estuary
in Yugoslavia: pilgrim's scallop, Pecten jacobaeus L.;
variant scallop, Chlamys varia L.; queen scallop, Chlamys
(Aequipecten) opercularis L.; and scallop, Chlamys
(Flexopecten) flexuosus Poli. Optimum depths and times for
collecting scallop spat on artufucial collectors along with
early growth of juveniles were studied at Šarina Draga Bay.
Peak settlement of C. varia occurred from June through
August, although settlement was recorded throughout the
whole year. The maximum number of spat (2,451/spat bag was
found at a depth of 12 m. Peak settlement of C. flexuosus
occurred from August to October, the maximum number of spat
(179/spat bag) was found at a depth of 10 m. Peak settlement
of C. opercularis occurred during September and October, the
maximum number (8/spat bag) was found at a depth of 15 m.
Peak settlement of P. jacobaeus occurred from the enc of
March to the beginning of July, the maximum number (80/spat
bag) was found at a depth of 15 m.
Keywords: pectinids, settlement, Krka estuary, Adriatic
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Čož-Rakovac, Rozelinda (153555)
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
- Hacmanjek, Mato (47715)
- McLean, Ewen
- Modrušan, Zvonko (4142)
- Editors
- Don Mackinlay, D.
Proceedings title: Proceedings of an International Fish Physiology Symposium
Language: engleski
Place: Vancouver, Kanada
Year: 1994
Pages: from 96 to 101
Meeting: International Fish Physiology Symposium
Held: from 07/16/94 to 07/21/94
- Type of paper
: Paper in proceedings
Title:
- Authors:
- Brackett, J.
- Teskeredžić, Zlatica (84301)
- Editors
- Billard, R.
- Gall, G.A.
Proceedings title: Special issue The carp
Language: engleski
Place: Budimpešta, Mađarska
Year: 1995
Pages: from 345 to 346
Meeting: The proceedings of the second Aquaculture Symposium
Held: from 09/06/93 to 09/09/93
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Higgs, D.
- Hardy, R.
- Dosanjh, B.
- Teskeredžić, Zlatica (84301)
- McBride, J.
- Beames, D.
- Fagerlund, U.H.M.
- Editors
- McGregor, D.I.
Proceedings title: Abstract book, 8th International GCIRC Congress
Language: engleski
Place: Saskatoon, Kanada
Year: 1991
Pages: from 0 to 0
Meeting: 8th International GCIRC Congress
Held: from 07/09/91 to 07/11/91
Summary: Because of the high cost of formulated diets for
salmonids
which mainly stems from the use of high dietary levels of
expensive fish meal protein, we determined the nutritive
values of various canola protein produsts for Pacific salmon
and rainbow trout with or without various nutritional
supplements. The strategies which were assessed to improve
the utilization of canola meal protein in salmonids included
dietary supplementation with indispensable amino acids,
3,5,3'triiodo-Lthyronine (T3), zinc and other minerals, or
Finnstim (appetite enhancer), dephytinization phytase
treatment) and/or a combination of some of the above.
Moreover, some of the canola protein sources tested had
reduced fibre and carbohydrate contents and negligible
glucosinolate content. The highlights of this research and
the relative merits of the foregoing strategies in relation
to salmonid performance will be presented.
Keywords: nutrition, salmonids, canola meal
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
- Hacmanjek, Mato (47715)
- McLean, Ewen
- Teskeredžić, Zlatica (84301)
- Donaldson, Edward M.
Proceedings title: Research for aquculture: Fundamental and applied aspects
Language: engleski
Place: Antibes-Juan Les Pins, Francuska
Year: 1991
Pages: from 162 to 0
Held: from 10/06/91 to 10/10/91
Summary: It is well established that many species of teleost
exhibit
thermal preferences at which growth is optimal. However, in
temperate zones,annual fluctuations in temperature result in
seasonal patterns of feeding and growth. Generally, elevated
growth occurs during warmer months, whereas decreased and
even negative growth rates occur during winter months. In
the carp, various studies have determined that the optimal
temperature range for growth is 30-32 oC As temperature
declines, growth in this species is retarded until, at < 10
oC there is a cessation in feeding.
From an aquaculture investment standpoint such "aphagic
thermal responses" result in decreased returns on investment
and increased risk. Methods which may circumvent appetite
loss and encourage somatic growth during unfavourable
conditions of temperature thus deserve serious
investigation. Several studies have demonstrated the growth
promoting efficacy of exogenous somatotropins when
administered to fishes. However, most such investigations
have been undertaken at temperatures which, under normal
circumstances, support somatic growth in fishes.
Accordingly, we examined whether exogenous somatotropin
therapy could maintain or stimulate growth in carp
maintained under hatchery conditions at sub-optimal
temperatures (> 12 oC). Animals (n = 20/group) were treated
with 1, 2 and 4 ug porcine somatotropin/g body wt/wk
delivered by i.p. injected for a period of 7 weeks. Control
animals received the identical treatment, but were injected
with saline alone. Regardless of dose employed, porcine
somatotropin therapy increased condition factors and
significantly decreased body lipid contentwhen compared
against saline injected animals. However, significantly
increased growth was only detected in animals receiving the
highest concentration of somatotropin.
Keywords: carp, porcin somatotropin therapy, growth, body composition
- Type of paper
: Summary in proceedings
Title:
- Authors:
- McLean, Ewen
- Teskeredžić, Emin (49394)
- Donaldson, Edward M.
- Teskeredžić, Zlatica (84301)
- Pitt, C.
- Souza, L.M.
Proceedings title: Research for aquaculture: Fundamental and applied aspects
Language: engleski
Place: Antibes-Juan Les Pins, Francuska
Year: 1991
Pages: from 156 to 0
Meeting: International congress "Research for Aquculture: Fundamental and Applied Aspects"
Held: from 10/06/91 to 10/10/91
Summary: Many studies have demonstrated the efficacy of
exogenous
mammalian somatotropins as agents for accelerating growth
and increasing food conversion efficiencies in teleosts. To
date, success has been achieved in accelerating growth of
salmonids following administratiom of recombinant
somatotropins by injection, constant infusion, immersion and
by oral intubation. However, all these methods of
somatotropin delivery exihibit practical problems that limit
their application on a large scale. Injection and immersion
treatments require that treated animals be handled and
anaesthetized weekly, or biweekli. Such procedures are
highly demanding of labour and time, and may be stressful to
recipient animals. Constant infusion by cholesterol pellets
reduces handling, but pellet effectiveness and longenity of
somatotropin release is limited to 3-4 weeks. Also, such
pellets may fail to release a significant proportion of the
protein. Oral delivery systems require > 10-fold the amount
of somatotropin to have like effect to paranteral methods of
administration.
Before the application of bioengineered somatotropins
to fish production therefore, more practicalmethods of
administration must be developed and evaluated. The present
study examined the effectiveness of a slow-release hydrogel-
based pellet as a method of delivering a recombinant porcine
somatotropin to coho salmon. Following pellet implantation,
the growth response of animals was followed over a 6 month
period. All groups receiving somatotropin therapy exhibited
significantly greater growth in both weight and length than
placebo implanted controls. Examination of body composition
at the termination of the experimental period revealed no
differences in conditin factors, percent body moisture or
protein content. However, between-group differences were
apparent when lipid content was examined.
Keywords: coho salmon, growth, porcine somatotropin
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Cribbs, P.
- Mayer, I.
- McLean, Ewen
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- Donaldson, Edward M.
- Souza, L.M.
Proceedings title: Research for aquaculture: Fundamental and applied aspects
Language: engleski
Place: Antibes-Juan Les Pins, Francuska
Year: 1991
Pages: from 151 to 0
Meeting: International congress "Research for Aquculture: Fundamental and Applied Aspects"
Held: from 10/06/91 to 10/10/91
Summary: It has been unequivocally proven that exogenous
mammalian
somatotropins accelerate growth and optimize feed conversion
efficincies in teleosts. Moreover, somatotropin therapy of
anadromous salmonids is known to enhance smolt fitness. From
and applied aspect therefore, somatotropin therapy offers
many potential advantages to the salmon culture industry.
However, before the use of such proteins can be anticipated
on a commercial scale, practical methods of administration
must be developed. One technique which has provided success
in the delivery of proteins to teleosts is immersion, and
its counterpart, hyperosmotic infiltration. Results from
studies in which these methodologies were applied to the
delivery of recombinant somatotropins to fish have however,
provided varied success.
Thus, in an attempt to clarify whether immersion offers
a practical system for the delivery of somatotropins to
fish, we compared the growth promoting effects of a
recombinant porcine somatotropin (rps), on 12 week old coho
salmon fry, following administration via hyper-, and iso-
osmotic infiltrations. For iso-osmotic infiltration (n =
50/treatment group in replicate) fry were immersed in a
solution containing 50 mg rpst/l for periods of 5 or 20
minutes. For hyperosmotic infiltration two groups of fry (n
= 50/treatment in replicate) were pre-treated with a 2
minute bath in 0.3% saline prior to 5 or 20 minutes
immersion in the somatotropin. Control fry (n = 50/treatment
in replicate) were treated identifically, but were immersed
in solutions of BSA (50 mg/l) for the appropriate time
periods. Treatments were given to each of the groups on a
once weekly basis for a period of 12 weeks. During
treatment, group weights were recorded, and sub-samples of
animals from each treatment group were weighed and measured
on an alternating basis bi-monthly. Feed conversion
efficiencies were calculated for each of the experimental
groups throughout the period of study. The results generated
by these investigations will be considered with reference to
the efficacy and practicality of immersion as a means of
delivering somatotropins to cultured teleosts, when compared
to other methods of therapeutant administration.
Keywords: Coho salmon fry, porcine somatrotropin, immersion
- Type of paper
: Summary in proceedings
Title:
- Authors:
- McLean, Ewen
- Donaldson, Edward M.
- Mayer, I.
- Teskeredžić, Emin (49394)
- Pitt, C.
- Souza, L.M.
Proceedings title: Proc. of the Canadian Aquatic Biotechnology Network-Aquatech '92
Language: engleski
Place: Halifax, Kanada
Year: 1992
Pages: from 0 to 0
Meeting: AQUATECH '92 Progress and Profits from Research
Held: from 03/01/92 to 03/03/92
Summary: It has long been recognised that injection of
exogenous
somatotropins (st) stimulates appetite, acelerates growth
and improves feed conversion efficiencies in teleosts.
Moreover, in salmonids exogenous st assists in mediatinf
those physiological responses that prepare juveniles for
saltwater transfer. Technically,however, the major
restriction to the use of st in the commercial produstion of
salmonids is the lack of practicalmethods of administration.
While st injection induces decisive growth acceleration in
fish, the necessity for frequent handling limits the use of
this procedure. A reduction in the need for manipulation
however, is afforded by prolonged-release devices, but no
information exists concerning the long-term effects of
sustained-release st therapy on fish. Accordingly, five
groups of coho salmon Oncorhynchus kisutchwere implated with
a placebo or one of 4 types of recombinant porcine st-
containing slow-release pellet. Each type of rpst-based
pellet was coated with polyvinyl alcohol, the thickness of
which controlles the liberation kinetics of rpst. Following
implatation, the growth response of each group was monitored
over 2 years. All fish in receipt of rpst therapy expressed
significant growth acceleration relative to placebo
implanted animals, for 100 days after treatment. This growth
advantage was subsequently maintained for in exess of 70
weeks. At the termination of the trial gonadosomatic,
visceral and hepatosomatic indicies were calculated,
together with an examination of relative gut lengths, for
all animals. The results of this study will be discussed
with reference ot the potential employment of sustained
release rpst therapy by the salmon culture industry.
Keywords: porcine somatrotropin, therapy, coho salmon, growth, sexual maturation
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Teskeredžić, Zlatica (84301)
- Higgs, D.
- Dosanjh, B.
- McBride, J.
- Beames, D.
- Hardy, R.
- Jones, J.
- Simell, M.
- Vaara, T.
- Bridges, R.B.
- Forster, I.
- Editors
- Gall, G.A.
Proceedings title: The Rainbow trout
Language: engleski
Place: Amsterdam, Nizozemska
Year: 1992
ISBN/ISSN: 0-444-891277
Pages: from 236 to 0
Meeting: The Rainbow Trout Symposium
Held: from 09/04/90 to 09/07/90
Summary: This study was undertaken to assess the merits of three
sources of rapeseed
protein concentrate (RPC; undephytinized, untreated control;
undephytinized, solvent-
treated control; dephytinized) as partial or total
replacements of
steam-dried whole herring
meal in a dry basal diet for rainbow trout. All diets had
about 43%
protein, 18% lipid and
3.9 kcal of metabolizable energy/g on a dry weight basis. The
three
RPC sources each
comprised about 19.2, 38.9 and 58.9% of dietary protein by
replacement of 33.3, 66.6 and
100% of herring meal protein. The appetite enhancer
"Finnstim" was
included in all diets
at 1.5%. Each of the 10 test diets was fed to duplicate
groups of
74-77 trout (initial mean
wt 4.3 g) held in well water at 10-10.3oC on a natural
photoperiod
for 84 days. All groups
were fed their prescribed diet by hand to satiation three
times
daily. Rainbow trout growth
rate, appetite, feed efficiency, protein and gross energy
utilization, mortality and health were
not compromised when either the undephytinized control or
dephytinized RPC sources were
substituted for 66% of the herring meal protein in the basal
diet.
Replacement of all of the
fish meal protein with each RPC source did not depress
appetite,
but did significantly
reduce growth rate, feed efficiency and protein and energy
utilization. The procedure used
to dephytinize RPC significantly reduced the quality of the
RPC
protein so that the benefits
of phytate removal were diminished. Fish which received
diets with
dephytinized RPC
displayed normal mineral metabolism unlike their control
counterparts. Strategies which
may result in successful total replacement of fish meal by
RPC in
trout diets are provided.
Keywords: nutrition, rapeseed protein concentrate, rainbow trout
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Čož-Rakovac, Rozelinda (153555)
- Teskeredžić, Emin (49394)
- Teskeredžić, Zlatica (84301)
- McLean, Ewen
Proceedings title: From Discovery to Commercialization
Language: engleski
Year: 1993
Pages: from 343 to 0
Meeting: International Conference: "World Aquaculture '93 - From Discovery to Commercialization"
Held: from 05/26/93 to 05/28/93
Summary: Investigations into viability of culturing
anadromous
Pacific salmonids in the Croatian Adriatic were commenced in
1979. Since this time a variety of studies have demonstrated
the commercial feasibility of rearing coho, and other
salmonid species, for the Croatian and European markets.
Howevwe to date few studies have examined the morphological,
physiological and biochemical changes that occur following
transfer of non-autochthonous species into environments of
higher than normal salinity (38 versus 35 %). Accordingly,
alterations in body composition and various blood parameters
were monitored in coho salmon following smoltification under
these anomolous conditions.
The studies employed 0+ and 1+ smolts of mean weight 86 g
and 100 g respectively. Changes in blood chemistry and body
composition were examined immediately prior to saltwater,
transfer, during the early stages of smoltification and for
a period of 30 days post-seawater transfer. Samples (n =
10/time point) were taken at 0, 22.5, 45, and 90 minutes, 3,
6 and 12 hours and 1, 2, 4, 8 and 30 days following
acclimation.
Results from the experiments demonstrate some differences in
adaptive fitness between the two age groups examined, with
inferior adaptation being expressed by the 0+
group. Over the period of investigation an increase in body
moisture and decreases in body lipid and plasma protein
concentrations were observed, when compared against
freshwater controls regardless of smolt age. This might be
interpreted as inicating malnourishement due to aphagia,
since appetite loss has been described in this, and other
oncorhyncids during seawater transfer. Other observations,
pertaining to alterations in body composition and blood
parameters of coho salmon smolts transferred to hypersaline
conditions will be presented and discussed with reference to
ion regulation and metabolism.
Keywords: coho salmon, body composition, blood parameters
- Type of paper
: Summary in proceedings
Title: 30-days seawater challenge test to measure seawater
adaptability of coho salmon
- Authors:
- Čož-Rakovac, Rozelinda (153555)
- Tomec, Marija (74116)
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
- Hacmanjek, Mato (47715)
Proceedings title: Zbornik sažetaka radova "Veterinarska znanost i struka"
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 133 to 0
Meeting: Veterinarska znanost i struka, znanstveno-stručni sastanak
Held: from 06/24/93 to 06/25/93
Summary: Investigations of the adaptability of two growth groups
of coho salmon fry (1+
and 0+) while being transferred from freshwater (FW) into
seawater
(SW) were performed
in the season autumn/winter on four locations in the
Adriatic Sea.
Average weight of the
1+ group was 116 g, and average weight of the 0+ group was
86 g.
Fish samples were
taken in FW, during the transport, and after the transfer
into the
sea (22.5, 45 and 90 min;
3, 6, and 12 hours, and also 1, 2, 4, 8 and 30 days
following the
transfer). The changes were
recorded by determining biochemical parameters of the blood.
Glucose, urea, Ca, Cl, and
P were determined by using CHEM-1 analyser, and K was
determined by
using flame
photometry. The results obtained show the differences in
adaptability of both age-
cathegories of the fish (1+ and 0+). Bigger and older coho
salmon
fry demonstrate greater
tolerance to SW. This can be seen from the level of glucose
in
blood, which, after
adaptation time in the sea amounted to 6.2 mmol/l, being
approximately identical to the
level of glucose in FW, 6.5 mmol/l. Average values of urea,
Ca, Cl,
P and K after 30 days
in the SW were higher (1 mmol/l, 4.2 mmol/l, 146 mmol/l, 5
mmol/l
and 3.5 mmol/l) than
those at the beginning of the investigation in FW (0.5
mmol/l, 3.3
mmol/l, 119 mmol/l, 4.6
mmol/land 2.8 mmol/l). These values have been considered
standard
values of the measured
parameters for coho salmon in hyperosmotic environment.
Smaller
adaptability of younger
age- cathegory (0+) is probably due to smaller capacity of
ionic
regulation and osmotic
equilibrium, which is evident from the results of
biochemical
parameters of blood.
Keywords: seawater challenge, coho salmon,blood, biochemical parameters
- Type of paper
: Summary in proceedings
Title: Possibilities of rearing of some big sea crabs (lobster,
spiny lobster)
- Authors:
- Strunjak-Perović, Ivančica (199674)
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
Proceedings title: Zbornik sažetaka radova "Veterinarska znanost i struka"
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 134 to 0
Meeting: Veterinarska znanost i struka, znanstveno-stručni sastanak
Held: from 06/24/93 to 06/25/93
Summary: At the end of XIX century started experimental work on
rearing big sea crabs in
Europe and North America. Experiments were most frequently
made
with lobsters
(Homarus sp.), so most of the data available are dealing
with
lobsters. However, spiny
lobsters (Palinurus elephas) are equally interesting. One of
the
basic problems encountered
in the rearing is relatively long time period necessary to
obtain
consume-size specimens
(several years). To this purpose various investigations were
conducted, e.g. the influence of
temperature, light, nutrition, hormonal regulation of
moulting
frequency, etc. During various
growth phases great losses are possible and are evidenced in
the
loss of eggs of hen lobster
kept in captivity (temperature, shock, moulting, canibalism
when
crabs are kept in groups,
etc. While sorting the crabs it is important that all the
specimens
of one group are at the
same phase of moulting to reduce the losses from canibalism.
Frequency of moulting falls
down with aging of crabs. Since moulting is the necessary
condition
for enlarging the size
of crabs, researchers are trying to reduce the time between
two
changes of shell
(exoskeleton).
Keywords: rearing, lobster, spiny lobster, moulting
- Type of paper
: Summary in proceedings
Title: Sea fish diseases
- Authors:
- Strunjak-Perović, Ivančica (199674)
- Hacmanjek, Mato (47715)
- Teskeredžić, Emin (49394)
- Čož-Rakovac, Rozelinda (153555)
Proceedings title: Zbornik sažetaka radova "Veterinarska znanost i struka"
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 140 to 0
Meeting: Veterinarska znanost i struka, znanstveno-stručni sastanak
Held: from 06/24/93 to 06/25/93
Summary: Development of aquaculture in the Adriatic sea enlarged
the need to study the
diseases which can, in aquaculture rearing, cause mass
mortality,
diminish the growth gain,
make fish meet inadequate for human consumption or affect
human
health (zoonoses). So
far, several viral diseases of some sea fish have been
described:
infectious pancreatic
necrosis, infectious hematopoietic necrosis, lymphocystis
disease
and others. Frequent
bacterial diseases are vibriosis, furunculosis, diseases
caused by
conditionally pathogenic
bacteria of genera Aeromonas and Pseudomonas, etc. It is
important
to mention the
parasites with their harmful effect primarily evidenced in
diminishing the resistance of fish
to diseases, in the transport of viruses and bacteria and
their
easier breaking into organism.
In the sea this effect is expressed by various
ectoparasites, for
instance Trichodina,
Cryptocaryon irritans, Ichthyobodo necator, Cryptobia sp.,
Amyloodinium ocellatum,
Cryptocotyle lingua, leeches and very widespread copepode.
From
endoparasites, tapeworms
(Trypanorhyncha) are frequenly found; various coccidia,
forming
xenomes, make pressure
on other organs (e.g. Glugea) or can cause sterility (e.g.
Eimeria
sardinae). Nematodes from
the family Anisakidae represent great threat for human
health and
are therefore classified
in zoonoses. The meat of the fish invaded by Kudoa, although
not
causing pathological
changes in men, is not suitable for human consumption.
Continuous
monitoring of health
condition of the fish of free-living populations and the
fish in
controlled rearing will enable
better evidence of the epizoothiological situation in the
Adriatic
and an efficient prevention
from contagious diseases.
Keywords: sea fish, disease
- Type of paper
: Summary in proceedings
Title: Eel (Anguilla anguilla) rearing
- Authors:
- Smrkulj, Bojan (199658)
- Teskeredžić, Emin (49394)
- Hacmanjek, Mato (47715)
Proceedings title: Zbornik sažetaka radova "Veterinarska znanost i struka"
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 132 to 0
Meeting: Veterinarska znanost i struka, znanstveno-stručni sastanak
Held: from 06/24/93 to 06/25/93
Summary: In the last decade reduced catch of the European eel
(Anguilla anguilla) has been
observed (FAO, 1988; Cramon, 1989) owing to the melioration
process, deterioration of
water quality and the consequent more frequent deseases. The
objective of this work is to
present the known eel rearing procedures, and based on this,
to
give guidelines of eel
rearing possiblities in our conditions. Enhanced demand of
this
highly valued fish induced
the researchers to establish a technology for the controlled
rearing. Eel culture in Europe
is based on its intensification, leading to diminishing the
area of
basins and to the
enhancement of using high quality industrial food. The basic
characteristics of the rearing
in warm recirculating water. The source of warm water are
industrially heated waters, in
particular the waters from steam power stations and nuclear
power
plants (Brown et al.
1980; Ravagnan, 1983; Krištofič, 1985). In the case there is
no
enough water, recirculation
of water is used. This enables considerable savings of the
input,
enhancing the rentability
of rearing. Eel controlled rearing starts by stocking glass
eel or
yellow eel ("ragan") caught
in natural waters. Stock material must undergo some phases
of
adjustment regardless the
way of rearing it serves for. Rearing technology involves
adjustment of glass eel or yellow
eel and rearing of consume-size eel. Eel rearing is followed
by the
occurrence of various
diseases caused by great stock density of fish, the change
in
physico-chemical and biological
quality of water, inadequate food quality and other
unfavourable
factors. Eel rearing in
controlled conditions is possible only by stocking of
quality fry,
their appropriate adjustment,
nourishment by high quality food, and an efficient prevention
and
therapy.
Keywords: rearing, eel
- Type of paper
: Summary in proceedings
Title: Sea crabs diseases
- Authors:
- Smrkulj, Bojan (199658)
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
Proceedings title: Zbornik sažetaka radova "Veterinarska znanost i struka"
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 141 to 0
Meeting: Veterinarska znanost i struka, znanstveno-stručni sastanak
Held: from 06/24/93 to 06/25/93
Summary: Decapode crabs represent a group of organisms of great
economic importance.
Economic importance of a particular species is not based on
the
quality of the catch; it is
based primarily on its cost on the market. Unstable world
production, based mainly on the
overcatch of natural population, resulted in an increased
interest
in the controlled rearing
owing to the overcatch in numerous commercially exploited
localities. Improving of the
rearing methods resulted paralelly in the developing
knowledge of
the diseases during the
rearing process or diseases in natural populations. Earlier
investigations focused on biotical
factors as sources of diseases. There is growing evidence
today
that changes in
environmental conditions caused by human influence in
interaction
with biotical factors
determine the reaction of the organism resulting in the
manifestation of a disease. In sea
crabs, rearing viral diseases occur along with fungal and
protozoal
diseases. By this paper
we attemped to unify the world wide knowledge on biotic and
abiotic
factors influencing
the course of controlled rearing of economically important
crab
species. In Croatia the
catch of natural populations is not sufficiently developed
because
of the lact of adequate
fishery tools and because of disorganization. For these
reasons the
knowledge on the
diseases in rarely being documented.
Keywords: sea crabs, diseases
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
- Hacmanjek, Mato (47715)
- McLean, Ewen
- Teskeredžić, Zlatica (84301)
- Donaldson, Edward M.
Proceedings title: Carp symposium
Language: engleski
Year: 1993
Pages: from 75 to 0
Meeting: Carp Symposium
Held: from 09/06/93 to 09/09/93
Summary: The existence of seasonal patterns in feeding and growth
for
tamperature zone ectotherms is well-established. Greatest
somatic growth generally occurs during warmer temperatures;
whereas decreased or even negative growth may be exhibited
during winter. In carp Cyprinus carpio, the prefered optimal
temperatures for growth lie between 30-32oC and a variety of
studies have determined that growth in this species is
retarded with decreasing temperature until, at < 10oC,
aphagia ensues. Under such "aphagic thermal conditions" carp
may lose weight, even though provided with feed adequate
enough to support growth. The inability of carp to grow at
reduced temperature zones. Any method which may minimize the
negative effect of temperature on growth thus deserves
serious evaluation. Several authors have suggested a
positive correlation between growth hormone (GH) secretion
and temperature. Thus, the loss of appetite in carp
maintained at sub-optimal temperatures may result due to
reduced activity and or synthesis of endogenous GH. By
deduction, replacement therapy of carp with an exogenous
source of GH might stimulate appetite and growth during
winter temperatures. Accordingly, the present study was
undertaken to determine whether exogenous porcine(p) GH
therapy could maintain or accelerate growth of carp held at
temperatures bordering their aphagic thermal position
(11.9+0.9oC). Carp (n=20/group) were treated with saline
(0.9%) or pGH at doses of 1, 2 or 4 ug/g/wk. Treatments were
given by intraperitoneal injectio. Observations were made
over an 8 wk period. All fish expressed positive growth
throughout the study. Relative to other treatment groups,
only carp injected with 4 ug pGH/g/wk expressed significant
(p<0.05) growth acceleration. All fish injected with pGH
exhibited significantly (p<0.05) reduced body lipid levels
when compared against saline injected
Keywords: carp, growth, porcine somatotropin therapy
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
- Čož-Rakovac, Rozelinda (153555)
- Hacmanjek, Mato (47715)
- McLean, Ewen
Language: engleski
Place: Aalborg, Danska
Year: 1994
Pages: from 41 to 41
Meeting: II International Symposium on Nutritional Strategies and management of Aquaculture Waste
Held: from 04/24/94 to 04/27/94
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Malnar, Leon (103063)
- Čož-Rakovac, Rozelinda (153555)
- Hacmanjek, Mato (47715)
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
- Strunjak-Perović, Ivančica (199674)
- McLean, Ewen
Language: engleski
Place: Stirling, Škotska
Year: 1994
Pages: from 26 to 26
Meeting: Aquaculture and water resource management
Held: from 06/21/94 to 06/25/94
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Tomec, Marija (74116)
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
- Hacmanjek, Mato (47715)
- Čož-Rakovac, Rozelinda (153555)
- Marguš, Drago (95182)
- Modrušan, Zvonko (4142)
Language: engleski
Place: Stirling, Škotska
Year: 1994
Pages: from 48 to 48
Meeting: Aquaculture and water resource management
Held: from 06/21/94 to 06/25/94
- Type of paper
: Summary in proceedings
Title: Water quality influence on the occurrence of
ectoparasitoses in cyprinides fishponds
- Authors:
- Tomec, Marija (74116)
- Hacmanjek, Mato (47715)
- Teskeredžić, Zlatica (84301)
- Teskeredžić, Emin (49394)
- Čož-Rakovac, Rozelinda (153555)
Language: engleski
Place: Pula
Year: 1994
Pages: from 291 to 291
Meeting: 5th Congress of Croatian Biologists with International Participation
Held: from 10/03/94 to 10/07/94
- Type of paper
: Summary in proceedings
Title:
- Authors:
- Teskeredžić, Emin (49394)
- Tomec, Marija (74116)
- Hacmanjek, Mato (47715)
- McLean, Ewen
- Teskeredžić, Zlatica (84301)
- Donaldson, Edward M.
- Editors
- Billard, R.
- Gall, G.A.
Proceedings title: Special Issue, The Carp
Language: engleski
Year: 1995
Pages: from 343 to 343
Meeting: The proceedings of the second Aquaculture Symposium
Held: from 09/06/93 to 09/09/93
- Type of paper
: Summary in proceedings
Title: Vrana lake on the Cres island
- Authors:
- Teskeredžić, Emin (49394)
Proceedings title: Dani Frane Petrisa
Language: hrvatski
Year: 1995
Pages: from 48 to 49
Meeting: IV medjunarodni filozofski simpozij
Held: from 07/16/95 to 07/20/95
- Type of paper
: M.A.
Title: Alterations in body composition and blood parameters of
coho salmon (Oncorhynchus kisutch), following somltification in the
Adriatic
Faculty: Prirodoslovno-matematički fakultet Sveučilište u Zagreb
Author: ČOŽ-RAKOVAC ROZELINDA
Date of defense: 12/12/91
Language: hrvatski
Number of pages: 138
Summary: Investigations into the viability of culturing
anadromous
Pacific salmonids in the Yugoslavian Adriatic were commenced
in 1979. Since this time a variety of studies have
demonstrated the commercial feasibility of rearing coho, and
other salmonid species, for the Yugoslavian and European
markets. However to date few studies have examined the
morphological, physiological and biochemical changes that
occur following transfer of non-autochthonous species into
environments of higher than normal salinity (38 versus 35 %
). Accordingly, alterations in body composition and various
blood parameters were monitored in coho salmon following
smoltification under these anomolous conditions.
The studies employed 0+ and 1+ smolts of mean weight 86
g and 100 g respectively. Changes in blood chemistry and
body composition were examined immediately prior to
saltwater transfer, during the early stages of
smoltification and for a period of 30 days post-seawater
transfer. Samples (n = 10/time point) were taken at 0, 22.5,
45, and 90 minutes, 3, 6 and 12 hours and 1, 2, 4, 8 and 30
days following acclimation.
Results from the experiments demonstrate some
differences in adaptive fitness between the two age groups
examined, with inferior adaptation being expressed by the 0+
group. Over the period of investigation an increase in body
moisture and decreases in body lipid and plasma protein
concentrations were observed, when compared against
freshwater controls regardless of smolt age. This might be
interpreted as indicating malnourishment due to aphagia,
since appetite loss has been described in this, and other
oncorhynchids during seawater transfer. Other observations,
pertaining to alterations in body composition and blood
parameters of coho salmon smolts transferred to hypersaline
conditions will be presented and discussed with reference to
ion regulation and metabolism.
Keywords: seawater challenge, coho salmon, body composition blood parameters
- Type of paper
: M.A.
Title:
Faculty: Prirodoslovno-matematički fakultet Sveučilište u Zagreb
Author: STRUNJAK-PEROVIĆ IVANČICA
Date of defense: 03/31/95
Language: hrvatski
Number of pages: 81
- Type of paper
: Mentorship
Title: Alterations in body composition and blood parameters of
coho salmon (Oncorhynchus kisutch, following smoltifications in the
Adriatic
Faculty: Prirodoslovno-matematički fakultet Sveučilište u Zagreb
Mentor: TESKEREDŽIĆ EMIN
Date of defense: 12/12/91
Number of pages: 138
Author: Čož-Rakovac Rozelinda
Degree level: M.A.
- Type of paper
: Mentorship
Title:
Faculty: Prirodoslovno-matematički fakultet Sveučilište u Zagreb
Mentor: TESKEREDŽIĆ EMIN
Date of defense: 03/31/95
Number of pages: 81
Author: Strunjak-Perović Ivančica
Degree level: M.A.
