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Effects of nonylphenol on plasma steroids, vitellogenin synthesis and sex reversal in Nile tilapia (<i>Oreochromis niloticus</i>) fingerlings

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Title Effects of nonylphenol on plasma steroids, vitellogenin synthesis and sex reversal in Nile tilapia (Oreochromis niloticus) fingerlings
 
Creator Ali, T. El-Sayed
Abdel-Aziz, S. H.
El-Sayed, A.-F.M.
Zeid, S.
 
Subject Estrogen
Nonylphenol
Nile tilapia
Vitellogenin
Intersex state
 
Description 521-528
Nonylphenol has been found to exert estrogenic effects in fish and thus interfere with the sexual development causing reproductive dysfunction. In the present study, the effects of nonylphenol on vitellogenin synthesis and sex reversal in Nile tilapia, Oreochromis niloticus were investigated. Vitellogenin was observed in the plasma of all fish exposed to nonylphenol. A tendency for a dose-dependent reduction in the gonadosomatic index in the nonylphenol exposed groups was observed. Histological examination revealed that nonylphenol impairs gonadal growth clearly shown in the testicular development and differentiation which presented testis-ova state. The study indicates that nonylphenol has estrogenic potency induced intersex state in the fish.
 
Date 2017-03-17T06:47:54Z
2017-03-17T06:47:54Z
2017-03
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/40809
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.46(03) [March 2017]