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首页> 外文期刊>Fisheries Science >Effect of tributyltin oxide exposure on the F0 and F1 generations of a marine teleost, the mummichog Fundulus heteroclitus
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Effect of tributyltin oxide exposure on the F0 and F1 generations of a marine teleost, the mummichog Fundulus heteroclitus

机译：氧化三丁基锡暴露对海洋硬骨鱼类Mumichogog Fundulus heteroclitus的F 0 和F 1 世代的影响

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摘要

The effects of organotin compounds on marine organisms, especially on their reproduction, are a continuing source of concern. We performed full-life-cycle exposure tests of tributyltin oxide (TBTO) at sub-lethal concentrations (0.13, 0.25, 0.5 and 1.0 μg/l) using a marine fish, the mummichog Fundulus heteroclitus, and studied the toxic effects of exposure to TBTO at various life-cycle stages of the fish. The effect of TBTO was initially studied on sex differentiation and then on spermatogenesis in maturing fish. A mating experiment was performed to determine the effects of exposure on the fecundity of female fish, fertilization success, and the hatch of the F1 generation. In all experimental groups, TBTO exposure resulted in a tendency toward a male-biased sex ratio and caused a significant increase in the frequency at which apoptotic cells appeared in the testes. Exposure to 1.0 μg/l TBTO resulted in a significant decrease in fecundity, but no significant effect was found on the fertilization ratio. Time to hatch and hatchability of the F1 generation were markedly affected in some exposure groups. These results indicate that long-term exposure of the mummichog to TBTO affects not only gonadal sex differentiation and spermatogenesis but also spawning and egg quality.
机译：有机锡化合物对海洋生物的影响，特别是对它们的繁殖的影响，一直是令人关注的问题。我们使用海洋鱼类mummichog Fundulus heteroclitus对亚致死浓度（0.13、0.25、0.5和1.0μg/ l）的三丁基氧化锡（TBTO）进行了全生命周期的暴露测试，并研究了暴露于此的毒性作用。 TBTO在鱼类的各个生命周期阶段。最初研究了TBTO对性别分化的影响，然后对成熟鱼的精子发生进行了研究。进行了一项交配实验，以确定暴露对雌鱼繁殖力，受精成功率和F 1 代孵化的影响。在所有实验组中，暴露于TBTO都会导致男性性别比例偏高，并导致睾丸中凋亡细胞的出现频率显着增加。暴露于1.0μg/ l TBTO会导致生育力显着降低，但对施肥率没有显着影响。 F 1 世代的孵化时间和孵化率在某些暴露组中受到显着影响。这些结果表明，长期暴露于木霉菌对TBTO不仅影响性腺性别分化和精子发生，而且还影响产卵和卵的质量。

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