Altered sex ratio in giant
fresh water prawn, Macrobrachium rosenbergii (de Man) using hormone
bioencapsulated live Artemia feed
D.S. Baghel, W.S. Lakra, G.P. Satyanarayana Rao-2004
Aquaculture
Research, 35(10):
943-947
Abstract:
Artemia nauplii cultured for 24 h in lipid-enriched
media contained 0, 0.38, 1.67, 0.79, 5.71 and 5.14 ng 17
-methyl
testosterone (MT) mg
1
dry weight for the control, 5, 15, 30, 50 and 100 mg of 17
-MT L
1
of media respectively. Giant fresh water prawn Macrobrachium rosenbergii
larvae were fed hormone-enriched Artemia nauplii for 50 days. A
significant difference in sex ratios (0.92, 0.69 and 0.93) was obtained in
relation to the control group. These results suggest that further research
is needed with regard to standardization of doses and duration of treatments
for complete hormonal control of sex differentiation in M. rosenbergii.
(Fish Genetics and Biotechnology Division, Central
Institute of Fisheries Education, Mumbai 400061, India. E-mail of W.S.
Lakra: lakraws@hotmail.com)
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