Sex chromosome variation and cytotaxonomy of the onchocerciasis vector Simulium squamosum in Cameroon and Nigeria.

MTraore-Lamizana; SSomiari; HBMafuyai; CGVajime; RJPost; (2001) Sex chromosome variation and cytotaxonomy of the onchocerciasis vector Simulium squamosum in Cameroon and Nigeria. Medical and veterinary entomology, 15 (2). pp. 219-223. ISSN 0269-283X DOI: 10.1046/j.0269-283x.2001.00300.x
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On the basis of sex chromosome variation, three cytotypes of Simulium squamosum (Enderlein) (Diptera: Simuliidae) are described from Cameroon and Nigeria. Simulium squamosum A is the typical form as originally described by Vajime & Dunbar (1975) with chromosome I as the sex chromosome. It occurs throughout most of Cameroon and south-east Nigeria. A second cytotype, S. squamosum B, is described from the river Sanaga (Cameroon). It also has chromosome I as the sex chromosome, but the nature of the sex differential region is different. Simulium squamosum C has no sex-linked chromosomal rearrangements. It is widespread in Nigeria and occurs near Mount Cameroon, where it seems to hybridize with S. squamosum A.
Item Type Article
Keywords Animals, Cameroon, Female, Karyotyping, Male, Nigeria, Research Support, Non-U.S. Gov't, Sex Chromosomes, Simuliidae, Variation (Genetics), Animals, Cameroon, Female, Karyotyping, Male, Nigeria, Research Support, Non-U.S. Gov't, Sex Chromosomes, genetics, ultrastructure, Simuliidae, classification, genetics, Variation (Genetics), genetics
ISI 169497200016

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