Masculinization of dwarf gourami Trichogaster lalius through immersion treatment of 17α-methyltestosterone

MILIND B KATARE; W S LAKRA; N K CHADHA; N BASAVARAJA; SUBODH GUPTA; PARAMITA BANERJEE SAWANT

doi:10.56093/ijans.v87i9.74290

Authors

MILIND B KATARE Central Institute of Fisheries Education, Versova, Mumbai, Maharashtra 400 061 India
W S LAKRA Central Institute of Fisheries Education, Versova, Mumbai, Maharashtra 400 061 India
N K CHADHA Central Institute of Fisheries Education, Versova, Mumbai, Maharashtra 400 061 India
N BASAVARAJA Central Institute of Fisheries Education, Versova, Mumbai, Maharashtra 400 061 India
SUBODH GUPTA Central Institute of Fisheries Education, Versova, Mumbai, Maharashtra 400 061 India
PARAMITA BANERJEE SAWANT Central Institute of Fisheries Education, Versova, Mumbai, Maharashtra 400 061 India

https://doi.org/10.56093/ijans.v87i9.74290

Keywords:

17Î±-methyltestosterone, Gonadosomatic index, Hormonal profiling, Masculinization, Progeny testing, Trichogaster lalius

Abstract

The present study was conducted to study the effect of 17α-methyltestosterone (17α-MT) on masculinization
efficiency through immersion treatment in dwarf gourami, Trichogaster lalius. The immersion treatment of 17α-
MT at doses of 250, 500, 750 and 1000 μg/l was carried out for 3 h daily on third, fifth and eighth day after hatching. The highest concentrations of 17α-MT produced the highest percentage of males (84.29%). The progeny testing of males from17α-MT treated groups indicated that the female progenies of each of the males tested differ significantly from that of control, indicating that all those males carried XX genotype. The gonado-somatic index
of the hormone treated fish revealed significant suppression of the ovarian development.

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