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Journal of Biological Sciences
Year: 2008  |  Volume: 8  |  Issue: 1  |  Page No.: 186 - 190

The Ecology and Habits of Tympanotonus fuscatus var. radula (L.) (Prosobranchia: Potamididae)

Rosemary I. Egonmwan    

Abstract: The ecology of Tympanotonus fuscatus var. radula (L.) in the mangrove swamps of the Lagos lagoon is described. The salinity in the habitat was found to vary between 0.1‰ during the rains and 25‰ in March during the dry season when the habitat dries up. The fluctuating pH, low level of dissolved oxygen content, recorded in the study area could be an indication of the deteriorating water quality. The substratum consists of black mud which sometimes contains hydrogen sulphide. The species is amphibious. It is active in the rainy season and in dry season it congregates under objects or burrow into the soil in the habitat. The species is found only at the edges of the lagoon and not in the main body.

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