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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국수산과학회 양식분과 한국양식학회지 한국양식학회지 제21권 제3호
발행연도
2008.8
수록면
146 - 156 (11page)

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초록· 키워드

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Tributyltin chloride (TBTCl) was administered through discrete immersion (2 hr each) from the 18th?25th day after hatching (dph). At the doses of 1, 2, 4 and 8 μg/ℓ, the immersion at 2 μg/ℓ ensured 93% masculinization and the highest survival of 75% after the treatment. TBTCl acted as a growth suppressant and the magnitude of its suppression was stronger in females. During the 300 day experiment, it postponed sexual maturity of females from 120th dph in the control to 240th dph in the females treated at 8 μg/ℓ. It reduced spawning frequency (22-3 times) and cumulative fecundity (1,632-19 eggs) by reducing the number of vitellogenic eggs. In the treated males too, it reduced sperm motility (100-68 sec); consequently, fertilizability of the sperm cells drawn from these males was also reduced from 88 to 43%. Progeny testing showed that the cross between males treated at>2 μg/ℓ and normal females generated the presumed ‘homogametic’ males. Both the treated ‘homogametic’ and ‘heterogametic’ males could induce the females to spawn fewer eggs than that of the normal males. A normal female somehow deducted the differences between the control, treated and sex reversed males; it preferred a normal male over a treated one, and a treated one over the sex reversed male.

목차

Introduction
Materials and Methods
Results
Discussion
Acknowledgements
References

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