The Study of Chromosomal Structure in Mystus pelusius (Solander in Russell,1794) Fish | ||
| Ibn Al-Haitham Journal For Pure And Applied Science | ||
| Article 1, Volume 29, Issue 2, August 2016, Pages 292-303 | ||
| Authors | ||
| Asmaa S.I.AL-Khayat; Heba H. R.Sahan | ||
| Abstract | ||
| The present study was done to identify the karyotype of Mystus pelusius fish , which is the only representative of the family Bagridae in Iraq, they have been caught from Tigris river in AL-Kraat area of Baghdad city, the results show that the diploid chromosome number was 2n=32 and the males chromosomal types included 2n=(6m+13sm+7st+6t)and fundamental number FN=51, in females chromosomal types included 2n=(6m+12sm+8st+6t)with FN=50,also it observed that the first submetacentric pair was the largest within the biarmed chromosomes .The results revealed that the male heterogamety and the female homogamety , accordingly it follows the sex determination system (XX / XY) , as the (X) chromosome represented by medium sized submetacentric (sm)chromosome and (Y)chromosome by small sized subtelocentric (st) chromosome. | ||
| Keywords | ||
| Karyotype; Mystus pelusius; Bagridae and Sex determination system; Bagridae | ||
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