Camallanus acaudatus sp. n. (Nematoda, Camallanidae) e uma descrição do macho de Gzmallanus tridentatus (DRASCHE, 1884), parasitas de peixes da Amazônia Brasileira

Abstract

Adults, 3rd and 4th stage larvae of Camallanus acaudatus sp. n. (Nematoda, Camaiianidae) are described from the "aruanã", Osteoglossum bicirrhosum VANDELLI, from the Brazilian Amazon. The male of C. tridentatus (DRASCHE, 1884) a parasite of "pirarucú", Arapaimagigos (CUVIER), is also desuibed and the femaie redesuibed. Both of these species are hematophagous but C. acaudatus sp. n. is thought to be more pathogenic becau2e it penetrates the intestinal wall (rectum) and lives with as much as a third of the anterior part of the body embedded in the host's tissue.