NDLI: Effect of tributyltin oxide exposure on the F$_{0}$ and F$_{1}$ generations of a marine teleost, the mummichog Fundulus heteroclitus

Content Provider	Springer Nature Link
Author	Mochida, Kazuhiko Ito, Katsutoshi Kono, Kumiko Onduka, Toshimitsu Kakuno, Akira Fujii, Kazunori
Copyright Year	2010
Abstract	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 F$_{1}$ 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 F$_{1}$ 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.
Starting Page	333
Ending Page	341
Page Count	9
File Format	PDF
ISSN	09199268
Journal	Fisheries Science
Volume Number	76
Issue Number	2
e-ISSN	14442906
Language	English
Publisher	Springer Japan
Publisher Date	2010-02-19
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Apoptosis Bromodeoxyuridine Full-life-cycle exposure Sex differentiation Food Science Freshwater & Marine Ecology Fish & Wildlife Biology & Management
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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