Female Heterogamety in two Teleostean Fishes

Abstract

The present paper reports female heterogamety in two fish species collected from Jammu water bodies. A diploid chromosome count of 2n=52 in male and 2n=51 in female of Lepidocephalichthys guntea (Cobitidae) has been recorded with ZZ male and ZO female sexchromosome make up. In case of Trichogaster fasciatus (Belontiidae) 2n=48 has been observed in both the sexes, the male being homogametic (ZZ) and the female being heterogametic (ZW).