Authors: Mustapha, M.¹; Post, R.J.²; Krüger, A.³

Source: Annals of Tropical Medicine and Parasitology, Volume 98, Number 5, July 2004 , pp. 509-523(15)

Publisher: Maney Publishing

Abstract:

Human onchocerciasis is hyper-endemic in south–western Cameroon and the island of Bioko. The vector on the island is the endemic 'Bioko' form of Simulium yahense. On the mainland, S. damnosum s.s., S. squamosum and S. mengense are recorded around Mount Cameroon but their contribution to transmission in the area is unclear. As elimination of onchocerciasis, through vector eradication, is a possibility on the island, it is important to be able to identify vector flies which might migrate to Bioko from the mainland. The morphologies of S. damnosum s.s. and S. squamosum are already well known. New cytotaxonomic and morphotaxonomic descriptions of S. mengense, a species which is less well known, are presented. Simulium mengense can be distinguished from the other cytospecies in the area by the presence of tufts of hair-like setae on the larval thorax, the presence of hairs on the subcostal vein of the adult female, and by the scutal pattern of the adult male. Although Vajime and Dunbar described seven fixed inversions in S. mengense, in 1977, nine were observed in the present study. Of the nine, three were the same as Vajime and Dunbar's but the other six were either missed or misinterpreted by them.

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/000349803225003523

Affiliations: 1: Department of Entomology, The Natural History Museum, Cromwell Road, London SW7 5BD,U. K. and Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine,Keppel Street, London WC1E 7HT, U. K. 2: Department of Entomology, The Natural History Museum, Cromwell Road, London SW7 5BD,U. K. 3: Department of Molecular Parasitology, Bernhard Nocht Institute for Tropical Medicine,Bernhard-Nocht-Strasse 74, 20359 Hamburg, Germany

Publication date: 2004-07-01

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• In 2012 Annals of Tropical Medicine and Parasitology changed its name to Pathogens and Global Health to reflect changes and developments in the subject area. View the issues of Pathogens and Global Health available online..
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