Simulium and Onchocerciasis in the Northern Territories of the Gold Coast

by G. Crisp, B.Sc., Ph.D., F.Z.S., F.R.E.S., Director, Entomological Unit British Empire Society for the Blind, with a foreword by Sir Stewart Duke-Elder, K.C.V.O., D.Sc., LL.D., M.D., F.R.C.S., Chairman, Medical Advisory Panel, British Empire Society for the Blind, Director of Research, Institute of Ophthalmology (University of London). 1st ed. 171 pages, illustrated. London, H. K. Lewis and Co., Ltd., 1956. £2.17.6d net

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This handsomely produced small book is essentially a summary of reports of field observations carried out over a period of more than two years, on the distribution and bionomics of Simulium damnosum in the Northern Territories of the Gold Coast (Ghana). It contains a suggested control scheme for the fly, based on these observations. While some valuable data are presented on the hydrography of the territories and the specific breeding sites utilized by S. damnosum during the seasons of observation, little new information is added to the meager knowledge of the bionomics of the adult. From the data presented in this book it appears that the majority of the numerous and varied field experiments are inconclusive; it is not even clear that S. damnosum is the only vector involved. It might be questioned therefore whether the suggested control of the immature stages of S. damnosum would be the most effective and economical approach to the control of onchocerciasis in the area studied.