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The Beffa form of Simulium soubrense of the S.damnosum complex in Togo and Benin
Author(s) -
CHEKE R. A.,
GARMS R.,
OUEDRAOGO J.,
SOMÉ A.,
SOWAH S.
Publication year - 1987
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.1365-2915.1987.tb00320.x
Subject(s) - biology , onchocerca volvulus , onchocerciasis , simulium , onchocerca , larva , vector (molecular biology) , zoology , ecology , filariasis , helminths , immunology , biochemistry , gene , recombinant dna
. The Beffa form of Simulium soubrense Vajime & Dunbar, a member of the S.sanctipauli sub‐complex of the S.damnosum complex, was found breeding throughout rivers in the Togo‐Benin Gap, as far north as 9 o 30'N. Its distribution changed with the season. In southern Togo there were seasonal fluctuations in the relative abundancies of the Beffa form and of S.damnosumlS.sirbanum. There was considerable temporal and regional variation in the frequencies of different colour morphs of adult flies. The flies in Benin tended to be darker. Infections with Onchocerca volvulus (Leuckart) appeared to be independent of the host's colour morph category. Larger flies harboured significantly more first stage Onchocerca larvae but no significant relations with fly size were found for second and third stage larvae.