Volume : IV, Issue : V, May - 2014

Impact of Estradiol–17B on the Growth of Sex Reversed Gymnocorymbus Ternetzi (Boulenger)

B. Uma

Abstract :

Growth increment was seen only in females of Estradiol –17β exposed fish at sub– optimal doses of 200 and 400μ g/l for 7 hours of short term immersion . While the fish exposed to sub–optimal dose of 200μ g/l re –corded an increment of 5.5%, those exposed to 400μ g/l recorded a growth increment of 9.2% over the control. However, at doses of 600 and 800μ g/l, females recorded growth decrement of 11.6 and 14.3% respectively relative to controls.However, in males, growth decrement was observed at all doses. At a dose of 200μ g/l (exposed for 7 hours) there was a growth decrement of 6%, 400μ g/l recorded 6.6%, 600μ g/l recorded 16.1% and 800μ g/l recorded a decrement of 21.9% in relation to control. This had clearly indicated that the genetic males which were not amenable for E–17β treatment suffered significantly (P< 0.1). A similar trend was observed for a dose of 600μ g/l exposed for 10 hours as well. Males suffered significantly (P< 0.01) than the females, as there was only 17.5% growth decrement in females unlike in males (26.2%) over their respective controls.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

B.Uma Impact of Estradiol-17B on the Growth of Sex Reversed Gymnocorymbus Ternetzi (Boulenger) Indian Journal of Applied Research, Volume.4, Issue.5, May-2014

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