Main Article Content

Studies on the ecology and distribution of some medically important freshwater snail species in Bauchi State, Nigeria.


H N Ntonifor
J A Ajayi

Abstract



Two Local Government Areas in Bauchi State, Nigeria, harboring many snail infested water bodies were surveyed for the presence of intermediate host snail vector species for a period of 13 months. This study revealed five medically important snail species which were comprised of Bulinus (Physopsis) globosus, Bulinus (Bulinus) truncatus, Bulinus (Bulinus) forskalii, Biomphalaria pfeifferi, and Lymnaea natalensis. A significant fluctuation in relative abundance of these snails was observed with a peak at the beginning of the dry season. This peak was then followed by a decline during the rainy season resulting in almost the elimination of the snails in some sites and low numbers in others. It was equally observed that the snails had a water velocity, rainfall and temperature-dependent seasonal cycle with rapid increases in abundance during periods of favorable conditions. Snail-plant relationships and preferred substratum were also evaluated. Results obtained from this study are very vital for the planning of snail control in Bauchi State.

International Journal of Biological & Chemical Sciences Vol. 1 (2) 2007: pp. 121-127

Journal Identifiers


eISSN: 1997-342X
print ISSN: 1991-8631