Karyotypic Analysis of the Clipper Barb Enteromius callipterus (Boulenger 1907) from Tahoss Stream, Jos Plateau, Nigeria
Karyotypic Analysis of the Clipper Barb Enteromius callipterus (Boulenger 1907) from Tahoss Stream, Jos Plateau, Nigeria作者机构：Department of Zoology Obafemi Awolowo University Ile-Ife Nigeria
出 版 物：《Open Journal of Genetics》 (遗传学期刊（英文）)
年 卷 期：2022年第12卷第3期
页 面：33-41页
学科分类：0710[理学-生物学] 07[理学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 090102[农学-作物遗传育种]
主 题：Enteromius Sex Dimorphism Karyotype Chromosome Barbus
摘 要：The chromosomes of male and female individuals of Enteromius callipterus [1] were assessed in this study with the objective of determining the diploid chromosome and karyotype. The samples were obtained from the Tahoss River, Jos Plateau, and the assessment of the chromosomes was conducted using the conventional Giemsa staining technique. The study reveals that the male individual of E. callipterus has a diploid chromosome number of 2n = 50, the fundamental number of autosomal arms (NFa) of 82, and a karyotype formula of 2n = 14M + 4m + 32t. However, none of the spreads obtained for the female individuals were either equal to or below the common diploid chromosome number of 50 known for members of the genus. The two spreads presented here were of 2n equal to 54 and 58. Although sex dimorphism is rare within the genus, the present results suggest E. callipterus show sexual dimorphism at the chromosomal level.
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