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28 août 2019
- doi: 10.4000/books.irdeditions.28632
- isbn: 9782709915236
- eisbn: 9782709925280
https://www.openedition.org/12554 , info:eu-repo/semantics/openAccess
Mots-clés
protection de l’écosystème méthode de lutte vecteur milieu aquatique onchocercose insecticide chimique Côte d’Ivoire Surveillance parasite larve insecticide biologique Environmental Studies NAT011000 RNKSujets proches
River blindness Robles' disease Onchocercosis Fish stocks Populations, Fish Stocks, Fish Fishes--Population dynamics Population dynamics of fishes Fishes--Stocks Africa, Western Western Africa West AfricaCiter ce document
C. Lévêque et al., « Onchocerciasis control programme in West Africa: ten years monitoring of fish populations », IRD Éditions, ID : 10.4000/books.irdeditions.28632
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Résumé
Commencing in 1975, under the auspices of W.H.O., weekly applications of insecticides have been employed to control the blackfly which transmits human river blindness in West Africa. The results provided in this paper do not show, as a whole, any clear impact of OCP-applied pesticides on fish populations. The total catch, the number of species caught in each sample and coefficient of condition, appeared to fluctuate around a mean value, and no long-term drop was observed over the period investigated. The seasonal pattern is generally clear. In some cases longer term declines occur, generally being followed by a rise correlating with changing hydrological conditions.