Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-13T04:31:52.019Z Has data issue: false hasContentIssue false
  • English
  • Français

Observations on Simulium neavei Roubaud, with special reference to a focus of onchocerciasis in the Belgian Congo

Published online by Cambridge University Press:  10 July 2009

S. G. Browne
S. G. Browne
Affiliation:
Baptist Mission Hospital, Yakusu, Belgian Congo
Get access Rights & Permissions [Opens in a new window]

Extract

Parts of a district situated in the tropical rain-forest of the Belgian Congo in which onchocerciasis was generally endemic, were investigated to identify the vector and to ascertain its phoretic host, breeding places, habits, etc.

The vector found biting human bait (usually less than 1 metre from the ground) was Simulium neavei Eoub. Dissection of adult females revealed developmental forms of Onchocerca volvulus.

Larvae and pupae were found on crabs of the genus Potamon in fast-flowing stretches of the numerous small streams flowing into the Eiver Congo. The infested streams in the main focus of onchocerciasis were treated by DDT emulsion at a concentration of one part per 500,000 for 30 minutes, every ten days for ten applications.

The good results observed initially were partly offset by the reappearance six months later of small numbers of Simuliids apparently developing from eggs laid by females entering the disinfested area from without.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 51 , Issue 1 , April 1960 , pp. 9 - 15
Copyright
Copyright © Cambridge University Press 1960

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Blacklock, D. B. (1926). The development of Onchocerca volvulus in Simulium damnosum.—Ann. trop. Med. Parasit. 20 pp. 1–48.CrossRefGoogle Scholar
Browne, S. G. (1960). Incidence and clinical manifestations of onchocerciasis in a focus in the Oriental Province of the Belgian Congo.—Ann. trop. Med. Parasit. 53 pp. 421–429.CrossRefGoogle Scholar
Brumpt, E. (1949). Précis de parasitologie.—6th edn., 1042 pp. Paris, Masson.Google Scholar
Crisp, G. (1956). Simulium and onchocerciasis in the Northern Territories of the Gold Coast.—171 pp. London, Brit. Emp. Soc. Blind & H. K. Lewis.Google Scholar
Garnham, P. C. C. & McMahon, J. P. (1947). The eradication of Simulium neavei Roubaud, from an onchocerciasis area in Kenya Colony.—Bull. ent. Res. 37 pp. 619–628.CrossRefGoogle ScholarPubMed
Garnham, P. C. C. & McMahon, J. P. (1954). Final results of an experiment on the control of onchocerciasis by eradication of the vector.—Bull. ent. Res. 45 pp. 175–176.CrossRefGoogle Scholar
McMahon, J. P. (1940). Onchocerca volvulus and its vector in the South Kavirondo district of Kenya.—Trans. R. Soc. trop. Med. Hyg. 34 pp. 65–83.CrossRefGoogle Scholar
McMahon, J. P. (1957a). Notes on the Simulium neavei group of Simuliidae with particular reference to S. nyasalandicum and S. woodi.—Bull. ent. Res. 48 pp. 607–617.CrossRefGoogle Scholar
McMahon, J. P. (1957b). DDT-treatment of rivers for eradication of Simuliidae.—Bull. World Hlth Org. 16 pp. 541–551.Google ScholarPubMed
Strong, R. P., Sandground, J. H., Bequaert, J. C. & Muñoz Ochoa, M. (1934). Onchocerciasis with special reference to the Central American form of the disease.—Contrib. Dep. trop. Med. no. 6, 234 pp. Cambridge, Mass., Harvard Univ. Pr.Google Scholar
Van den Berghe, L. (1941). Recherches sur l'onchocercose au Congo Belge. ler mémoire.—Ann. Soc. belge Méd. trop. 21 pp. 63–76.Google Scholar
Wanson, M. & Henrard, C. (1945). Habitat et comportement larvaire du Simulium damnosum Theobald.—Rec. Trav. Sci. méd. Congo belge no. 4 pp. 113–121.Google Scholar