Volume : IV, Issue : IV, April - 2014
MASCULINIZATION OF GYMNOCORYMBUS TERNETZI (BOULENGER) USING 17 ? –METHYL TESTOSTERONE WITH CONTINUOUS IMMERSION
B. Uma
Abstract :
In Gymnocorymbus ternetzi , 100% masculinization had been induced successfully, for the first time , using continuous immersion techniques with 17 a – Methyl testosterone. Control population had a highly skewed sex–ratio in favour of males (59%), possibly due to temperature induced / based natural sex reversal. Intersexes were also observed in the control stock. For 10mg/l (single dose) of continuous immersion of 5 –day old posthatchlings with 17 a – Methyltestosterone resulted in cent percent males with survival rate of 42% However, a strict dose –dependent mortality was not observed. Super.–optimal doses of 50, 100mg/l of 17 a –MT demonstrated paradoxical feminization. However, a strict dose –dependent mortality was not observed. Intersexes were observed in the hormone exposed lots at both sub–optimal and super–optimal doses. Sexes were identified through gonadal squash
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DOI : 10.36106/ijar
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B.Uma MASCULINIZATION OF GYMNOCORYMBUS TERNETZI (BOULENGER) USING 17 -METHYL TESTOSTERONE WITH CONTINUOUS IMMERSION Indian Journal of Applied Research, Vol.IV, Issue. IV
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B.Uma MASCULINIZATION OF GYMNOCORYMBUS TERNETZI (BOULENGER) USING 17 -METHYL TESTOSTERONE WITH CONTINUOUS IMMERSION Indian Journal of Applied Research, Vol.IV, Issue. IV
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