title: The distribution and chromosome polymorphism of Simulium dieguerense (Diptera: Simuliidae).
abstract: Simulium dieguerense has been identified from Senegal, Mali and Guinea, in the Western Zone of the World Health Organization/Onchocerciasis Control Programme thus considerably extending its known distribution and indicating the need to reassess its possible importance as a vector of human onchocerciasis. A distribution map based on these identifications has been drawn. Examination of the larval polytene chromosomes revealed the presence of a hitherto unreported sex chromosome system. About 90% of males and 17% of females were found to be heterozygous for an altered segment of the centromere region on chromosome I.
authors.affiliation: World Health Organization/Onchocerciasis Control Programme, Ouagadougou, Burkina Faso.
authors.forename: D A
authors.initials: DA
authors.lastname: Boakye
authors.forename: F W
authors.initials: FW
authors.lastname: Mosha
mesh_terms: D000354:Africa, Western; D000818:Animals; D002503:Centromere / Q000648:ultrastructure; D002875:Chromosomes / Q000648:ultrastructure*; D005260:Female; D008040:Genetic Linkage; D008297:Male; D008302:Mali; D011110:Polymorphism, Genetic; D012675:Senegal; D012843:Simuliidae / Q000235:genetics*