A Cytogenetic Analysis of Enteromius parablabes (Daget, 1957) from Aho Stream, Ile-Ife, Nigeria ()
ABSTRACT
In this study, Enteromius parablabes [1] was analyzed with the aim
of providing baseline information regarding the diploid chromosome number and
karyotype differences of both sexes. The
diploid chromosome number (2n) was 50 for both sexes, and this corresponds to the diploid chromosome number reported for most small African Barbus species. The fundamental number (NFa) of the male and female was 81 and 98
respectively. The first pair of metaphase chromosomes which has been suggested
to be a marker for the small African Barbus group was conspicuously larger in the female karyotype. The karyotype of the
female consisted more of metacentric (39m + 7sm + 2st + 2t) which is common in the group while
the karyotype of the male which consisted more of telocentric chromosomes (10m
+ 21st + 19T) is scarce. The chromosomal number obtained for E. parablabes demonstrates its diploid status in the context of the ploidy lines
characteristic of the African Barbus assemblage.
Share and Cite:
Popoola, M. , Awe, O. and Adeniran, I. (2022) A Cytogenetic Analysis of
Enteromius parablabes (Daget, 1957) from Aho Stream, Ile-Ife, Nigeria.
Open Journal of Genetics,
12, 25-32. doi:
10.4236/ojgen.2022.123003.
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