Effect of chorionic gonadotrophin on testicular histology and testosterone production in Tilapia leucosticta (Teleostei: Cichlidae
Date
1970-10Author
Hyder, Mohamed
Shah, V.
Kirschner, Marvin A.
Language
enMetadata
Show full item recordAbstract
Eight adult male T. leucosticta were given daily injections of 500 IU human chorionic gonadotrophin (Pregnyl, Organon) intraperitoneally for 1 week. These fish showed marked increases in testicular size, gonosomatic index, interstitial cell and nuclear sizes, and spermatogenesis when compared to a similar control group injected with deionized water. The testosterone content of the testes and blood of CG-treated fish rises sharply, and parallelsthe histological parameters. These data indicate that in Tilapia, as in higher vertebrates, iterstitialtissue is stimulated by gonadotrophin to produce testosterone. Interstitial cell activityis a good index of androgen production. (Endocrinology 87: 819, 1970)
Citation
HYDER, M., SHAH, V., & KIRSCHNER, M. A. (1970). Effect of chorionic gonadotrophin on testicular histology and testosterone production in Tilapia leucosticta (Teleostei: Cichlidae). Endocrinology, 87(4), 819-822.Publisher
University of Nairobi