Scientific publications
Félicité Flore Djuikwo-Teukeng
Charles Félix Bilong Bilong
Thomas Njiné
Summary: Experimental study of the compatibility between Schistosoma haematobium and two species of Bulinus in Cameroon. A study on the compatibility between Schistosoma haematobium from three remote localities (Mourtourwa, Gounougou and Kekem) and four populations of Bulinus truncatus (Gounougou, Ngaoundere, Bertoua and Kekem) and four populations of B. globosus (Mourtourwa, Ouroudou koudje, Bafia and Yaounde) was undertaken in order to estimate the risk of extension of urinary schistosomiasis in Cameroon. First generation of offspring from wild Bulinus was exposed to miracidia liberated by schistosome eggs extracted from patient urine. Between the 25 th and the 60 th day post-infestation the number of snails still alive, the number emitting cercariae and the prepatent period duration were noted. Results showed that all B. truncatus samples were susceptible to the three strains of parasite whe reas only B. globosus of Mourtourwa and Ouroudoukoudje were susceptible to S. haematobium from Mourtourwa. The schistosome infection rate was then significantly higher in B. truncatus and the prepatent period significantly lower than in B. globosus. The compatibility characterised by a high infection rate and a low prepatent period was significantly better in homopatric couples than in allopatric combinations. The results suggested that B. truncatus might be potentially more implicated than B. globosus to the extension of the urinary bilharziasis in Cameroon.
