01649nas a2200193   4500008004100000245016800041210006900209260002000278300001200298490000700310520096200317653003001279653001701309653001601326653001401342653002401356100001501380856006001395       2022                        eng d00aKaryotype of a Nigerian population of Hyperopisus bebe (Osteoglossiformes: Mormyridae) revealed another evolutionary lineage in the monospecific genus: Hyperopisus0 aKaryotype of a Nigerian population of Hyperopisus bebe Osteoglos  c20 October 2022  a361-3700 v243 a<p>This study provides data on the gross chromosome morphology, including centromeric and silver nitrate banding of a Nigerian population of <em>Hyperopisus bebe</em>, sampled from Asejire Reservoir, Osun River basin. The chromosomes of the fish samples were extracted using the Giemsa staining technique, and the centromeric and silver nitrate bandings were analyzed based on standard cytogenetic methods. The <em>H. bebe </em>population had a chromosome number of 2n = 40 and a karyotype formula of 2n = 40 (24m+6sm+10st/a), FN = 70. C-bands were restricted to the centromeric regions, suggesting that Robertsonian events are the major mechanism in the karyotype evolution in the population. Currently, <em>H. bebe </em>represents the only species in the genus Hyperopisus. The karyomorph data from this study suggest that the fish sample belongs to another species. However, other systematic approaches are needed to establish its taxonomic status.</p>
10aChromosome rearrangements10aCytogenetics10akaryomorphs10amormyrids10aRobertsonian events1 aJegede, OI  uhttps://www.ajol.info/index.php/ijs/article/view/233919