Estudo de Metazoários parasitas do peixe serra scomberomorus commersoni - lacépède, 1800 da Baía de Maputo

Abstract

Between August and December 2009, 20 specimens of Scomberomorus commersoni (Lacepéde, 1800), caught in the Maputo Bay, were examined in order to study the parasitic metazoans that infect this fish. The length of the fish was measured at the furcation and weighed. the surface, dissection of the fish. Finally, analysis of the gills, visceral cavity, stomach visceral cavity, stomach and intestine. Of the total 20 specimens collected all were infected by at least one species of parasite. In this survey 8 species of metazoan parasites were detected namely, Pricea multae found in the gills, Amphiptiches urna in the visceral cavity, Pseudocycnoides rugosa fixed in the gills and one parasite belonging to the trypanoryncha group located in the stomach and intestine. The 4 species were not identified, one species belonging to the monogenetic group and three species belonging to the digenetic group. These were found in the gills, stomach and intestine. Pricea multae had the highest prevalence in the sample, with P =100% with the lowest prevalence detected in two unknown parasites (2, 4) and Pseudocycnoides rugosa which was 5%. The highest mean intensity was recorded at infection in unknown parasite-4 with IM= 35 ± 7.8 (35-35) and the lowest mean intensity in unknown parasite-3 IM=1.5 ± 1 (1-2). Pricea multae shows high mean abundance AM=22.15 ± 15.6 (2-60) while unknown parasite (1 and 2) shows the lowest mean abundance AM= 0.1. (TRADUÇAO NOSSA)