Pregled bibliografske jedinice broj: 66273
TBT Toxicity Tests Using Sea Urchin Gametes and Developing Embryos
TBT Toxicity Tests Using Sea Urchin Gametes and Developing Embryos // 1. hrvatski toksikološki kongres s međunarodnim sudjelovanjem (CROTOX 96) : knjiga sažetaka / Kniewald Jasna, president Scientific Committee (ur.).
Zagreb, 1996. str. 16-16 (predavanje, domaća recenzija, sažetak, znanstveni)
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Naslov
TBT Toxicity Tests Using Sea Urchin Gametes and Developing Embryos
Autori
Ozretić, Bartolo ; Petrović, Siniša ; Krajnović-Ozretić, Mirjana
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
1. hrvatski toksikološki kongres s međunarodnim sudjelovanjem (CROTOX 96) : knjiga sažetaka
/ Kniewald Jasna, president Scientific Committee - Zagreb, 1996, 16-16
Skup
Hrvatski toksikološki kongres s međunarodnim sudjelovanjem (1 ; 1996)
Mjesto i datum
Zagreb, Hrvatska, 17.04.1996. - 19.04.1996
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Domaća recenzija
Ključne riječi
Tributyltin; Sea Urchin; Embryonal Development
Sažetak
Tributyltin (TBT) is a highly toxic synthetic compound used as additive to the antifouling submarine paints to prevent the attachment of larvae and their growth on the submerged surface of ship hulls which impede their movement and induce to higher fossil fuel consumption and costs. The antifouling prevention is based on the continuous leaking of TBT in the sea water roundabout the ship hulls acting as a toxic barrier to the fouling organisms. On the other side, because of its highly toxic and genotoxic properties, TBT generates serious harm to the marine environment in general but particularly to the larval and juvenile stages of marine invertebrates from the bottom communities. The toxicity of TBT was evaluated using sea urchin gametes and their early developmental stages as recommended model organism. Various concentrations of TBT were obtained by leakage from painted plates or by addition of pure TBT in sea water. The toxicity of TBT was estimated measuring the percentage of unfertilized eggs, the decreased cleavage rate and hatching time and the progressive appearing of various morphological deformations which are the most obvious evidence of the toxic effects of TBT. However, the most accurate quantitative results were obtained by the measurement of DNA and echinocrome production. Both parameters are not specific indicators of physiological and biochemical activity, but they can be used as growth rate index. The most vulnerable stage during the sea urchin embryonal development are the swimming blastulae and by their exposure immediately following hatching, the toxic effects can be measured few hours later.
Izvorni jezik
Engleski
Znanstvena područja
Biologija
