This thesis has two parts. In the first part there is described an optimal methodological process for screening tests used in subsequently. Fertilized fish eggs of Oryzias latipes were incubated in 6 tests with different numbers (from 1 to 6) with standard conditions in ISO water. In the tests, hatching performance and duration of embryonic development were investigated and the results were applied on screening tests. The other part of the thesis is aimed on the proof of potential toxic effects of water with cyanobacterial water bloom. The fertilized eggs of Oryzias latipes were embedded into the test in stage 6 to 8. Three samples of cyanobacterial biomass from free waterbodies with known species composition and microcystin {--} LR, YR and RR contents were tested. The hatching performance, duration of embryonic development, lethal and sublethal effects were monitored during the tests. The tests were performed according to the OECD 212. There were detected significant differences in hatching performance, duration of embryonic development and in some cases also in induction of deformities between the control group and the tested groups.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:43980 |
| Date | January 2008 |
| Creators | SIKORA, Jiří |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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