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Species richness and diversity of terrestrial molluscs (Mollusca, Gastropoda) in Yapo classified forest, Côte d’Ivoire

N’dri Saint-Clair Amani, Mamadou Karamoko, Jean Didier Memel1,Atcho Otchoumou, Christopher Omamoke Oke

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J. Bio. Env. Sci.9(1), 133-141, July 2016

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Abstract

The land snail species richness and diversity in Yapo classified forest, Côte d’Ivoire, was studied using a combination of direct search and leaf-litter sieving techniques. In total, 27 species and 1045 individuals in 8 molluscan families were collected from 31 plots of 400 m2 each. Species richness varied from 2 to 16 (mean 7.87 ± 3.57) and the number of individuals from 3 to 57 (mean 33.71 ± 16.67) per plot. Species richness and numerical abundance was dominated by the herbivorous Subulinidae (33.33% for species, 72.54% for numerical abandance) and carnivorous Streptaxidae (29.63% for species, 15.69% for numerical abandance). The most abundant species was Curvella sp 4, contributing almost 20.29 % of the total number of individuals. If there are no measures of protection this small terrestrial molluscs populations will disappear. Studies on the molluscan diversity in Yapo classified forest will assist in producing an inventory of the molluscan fauna for biodiversity conservation management in Côte d’Ivoire.

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Species richness and diversity of terrestrial molluscs (Mollusca, Gastropoda) in Yapo classified forest, Côte d’Ivoire

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