SVIBOR - Project code: 1-08-262

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

SVIBOR

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Project code: 1-08-262


GROWTH AND REPRODUCTION IN NORMAL CONDITIONS AND IN PRESENCE OF SOME AGENSES


Main researcher: ŽNIDARIĆ, DANICA (55795)


Assistants
Type of research: basic
Duration from: 04/30/91. to 12/15/95.
Papers on project (total): 32
Papers on project quoted in Current Contents: 6
Institution name: Prirodoslovno-matematički fakultet, Prirodoslovni odjeli, Zagreb (119)
Department/Institute: Department of Zoology
Address: Rooseveltov trg 6
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 442-604/29
Fax: 385 (0)1 4552-645
Summary: The subject of work on this project is biology of growth, regeneration and reproduction of freshwater invertebrates from the classes Cnidaria and Turbellaria. The effects of low concentrations of different chemical agents (pesticides, heavy metals, cytostatics) and physical agents (UV irradiation) on these organisms are studied. During experiments we monitor resistance of animals, their recovery, appearance of malformations and dying of treated animals. The ways of regeneration and processes of differentiation, dedifferentiation and transdifferentiation of certain cell types, which occur during regeneration, are monitored. We also introduce cytogenetical methods of research and study chromosomal and mitotic aberrations due to different toxic agents.

Keywords: Cnidaria, Turbellaria, regeneration, symbiosis, asexual reproduction, differentiation, transdifferentiation, treatment with chemical and physical agents, chromosomes, mitotic and chromosomal aberrations

Research goals: The aim of research include further investigation of symbiotic species Hydra viridissima Pallas. Namely, beside the regeneration process, on this species effects of different agents upon maintenance of intracellular population of unicellular algae Chlorella are studied. The great part of research we carry out on species Polycelis felina. Our goal is to investigate irregularities of cell division and chromosomal aberrations due to various toxic agents. The aims are also to establish simply test systems with these organisms which could be use for the detection of harmul effects of different chemical and physical agents.

COOPERATION - PROJECTS


  1. Name of project: 1-08-186 Struktura i funkcija fotosintetskog aparata
    Name of institution: Institut Ruđer Bošković, Odjel molekularne genetike, Laboratorij za elektronsku mikroskopiju
    City: 10000 - Zagreb, Croatia

  2. Name of project: 1-08-236 Rijetke i ugrožene ribe Hrvatske
    Name of institution: Prirodoslovno-matematički fakultet
    City: 10000 - Zagreb, Croatia

COOPERATION - INSTITUTIONS


  1. Name of institution: Institut Ruđer Bošković
    Type of institution: State institute
    Type of cooperation: Systematic exchange of information
    City: 10000 - Zagreb, Croatia
Other information about the project.
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Last update: 10/04/95
Information: svibor@znanost.hr