Skip to main content Accessibility help

Studies on Biological Control of Intermediate Hosts of Schistosomiasis in Western Kenya

  • J. P. McMahon (a1), R. B. Highton (a2) and T. F. de C. Marshall (a3)


The experiment described was conducted in water impounded by earth dams, for local water-supply, in Nyanza province, Kenya. Control of snails was attempted by introduction of the malacophagous fish Astatoreochromis alluaudi; other species were also introduced. The schedules of introduction of fish were varied between the reservoirs, and one was left as a control without any introduction of fish. The necessity for the establishment of a fish-rearing pond, prior to large-scale stocking, is emphasized.

Assessment of snail control was made by scooping for snails, catches being expressed per man-hour. This was carried out both before and after introduction of fish, over a total period of 15 years. It is concluded that the data indicate that A. alluaudi did reduce the numbers of some species of snails—particularly Biomphalaria pfeifferi and, to a lesser extent and with less certainty, Bulinus spp.

Two other introduced fish species, Tilapia zillii and T. leucosticta, did not appear to be associated with any fall in snail numbers.



Hide All
Bard, J. & Mvoga, L. (1963). Note d'information Sur Astato-reochromis alluaudi, poisson molluscophage utilisable dansla prophylaxie de la bilharziose. Bull. Soc. Path. Exot., 56, PP. 119–26.
Berrie, A. D. (1966). Fish Ponds In Relation To Transmission Of Bilharziasis In East Africa. E. Afr. Agric. Forestry J., 31(3), p. 276–81.
Bont, A. F. de & Hers, M. J. de Bont (1952). Mollusc Control And Fish Farming In Central Africa. Nature (London), 170, PP. 323–4.
Fish, G. R. (1955). Food of Tilapia in East Africa. Symposium on African Hydrobiology and Inland Fisheries, Entebbe, Uganda, 1952, pp. 72–6.
Greenwood, P. H. (1956). The Monotypic Genera Of Cichlid Fishes In Lake Victoria. Bull. Brit. Mus. (N.H.) Zool., 3(7), pp. 295333.
Greenwood, P. H. (1957). a revision of the Lake Victoria Hapluchromis Species (Pisces, Cichlidae), Part II. Bull. Brit. Mus. (N.H.) Zool., 5(4), pp. 7697.
Greenwood, P. H. (1959). The monotypic genera of cichlid fishes in Lake Victoria, Part II, and a revision of the Lake Victoria Haplochromis Species (Pisces, Cichlidae), Part III. Bull. Brit. Mus. (N.H) Zool, 5(7), pp. 163–77.
Greenwood, P. H. (1960). A revision of the Lake Victoria Haplochromis species (Pisces, Cichlidae), Part IV. Bull. Brit. Mus. (N.H.) Zool., 6(4), pp. 227–81.
Lagrange, E. (1953). La Lutte Biologique Contre Les Planorbes. Ann. Soc. Beige Med. Trop., 33, pp. 227–36.
McMahon, J. P. (1960). Preliminary observations on the control by fish of snails and mosquitoes in dams. Annual Report For 1959 Of E. A. Fish Res. Org., Jinja, Uganda, pp. 41–6.
Malek, E. A. (1958). Factors Conditioning The Habitat Of Bilharziasis Intermsdiate Hosts Of The Family Planorbidae. Bull. Wldhlth Org., 18(5 & 6), pp. 785818.
Michelson, E. H. (1957). Studies on the biological control of schistosome-bearing snails. Predators and parasites of freshwater Mollusca. A, Review of the Literature. Parasitology, 47(3/4), pp. 413–26.
Mvoga, L. & Bard, J. (1964). Seconde note d'information sur Astatoreochromis alluaudi, poisson molluscophage utili sable dans la prophylaxie de la bilharziose. Bull. Soc. Path. Exot., 57, pp. 21–3.
Paperna, I. (1969). Aquatic weeds, snails and transmission of bilharzia in the new man-made Volta Lake in Ghana. Bull. Inst. Fond. Afr. Noire, Ser. A, 31(2), pp. 487–99.
Siegel, S. (1965). Non-Parametric Statistics For The Behavioral Sciences. McGraw Hill, New York, And Kogakusha Company, Tokyo: Xvii + 312 pp.
Teesdale, C. (1963). Ecological observations on the molluscs of significance in the transmission of bilharziasis in Kenya. Bull. Wld Hlth Org., 27, pp. 759–82.
Webbe, G. (1961). Laboratory and field trials of a new mollusci-cide, Bayer 73, in Tanganyika. Bull. Wld Hlth Org., 25, pp. 525–31.

Studies on Biological Control of Intermediate Hosts of Schistosomiasis in Western Kenya

  • J. P. McMahon (a1), R. B. Highton (a2) and T. F. de C. Marshall (a3)


Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.