Spatio-temporal distribution of Sciomyzidae (Diptera) in relation to environmental characteristics in for localities of Benin, west Africa

Abstract

This study establishes the spatio-temporal distribution of sciomyzidae (Diptera) in relation with environmental factors in four localities in Benin. These communities are located at the south (localities 1 and 2) and at the center (localities 3 and 4) and were sampled monthly during an annual cycle from August 2014 to July 2015. The test of Shapiro, of Kruskal Wallis, the Analysis in Principal Component ( ACP) and the Factorial Analysis of Correspondances (AFC) were applied to all the data obtained. A total, eight species where identified with an abundance 3656 individuals enumerated thoughout the study period. Sepedon (Parasepedon) ruticeps and Sepedon (Parasepedon) trichrooscelis dominated all the stands. The variation of abundance, temperature and rainfall is highly significant from one locality to another and season to another (p<0,001). The typologies realised by the ACP and AFC reveal two oposite groups, GI and GII, characterised by an equidistant distribution of the species.