African Entomology (2016) 24, 24-29

O.A. Surakat, S.O. Sam-Wobo, K.A. Ademolu, O. Shittu, M.A. Adeleke, W.A. Abimbola, N.O. Adekunle and C.F. Mafiana (2016)
Cytospecies composition of Simulium damnosum complex (Diptera: Simuliidae) breeding in Oyan River, southwestern Nigeria
African Entomology 24 (1), 24-29
Abstract: A cytotaxonomic study was carried out to determine the species composition and dynamics of Simulium damnosum sensu lato in Oyan River, an onchocerciasis mesoendemic area in southwest Nigeria. Simulium larvae were collected fortnightly from different attachments between March and November 2012 fixed in Carnoy's solution for laboratory identification using cytotaxonomic keys. A total of 255 Simulium larvae were obtained and identified from their polytene chromosomes. Simulium soubrense Beffa (56.5 %) and Simulium damnosum sensu stricto (43.5 %) were the two cytospecies observed. No new inversions were found in the larvae. Statistical analysis revealed a significant difference (P<0.05) in the abundance of S. damnosum s.s. and S. soubrense in relation to rainfall pattern. The sympatric breeding of both species in the area may suggest their involvement in the transmission of onchocerciasis in the area, as S. damnosum s.s. and S. soubrense Beffa are known vectors of Onchocerca volvulus in West Africa.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Sammy Olufemi Sam-Wobo

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Simulium damnosum		Nigeria
	Simulium soubrense		Nigeria