Author(s): SILVA, E. F. da; TAVARES-DIAS, M.

Summary: This study describes the parasitic fauna of Mylossoma duriventre caught at Lake Coari, a tributary of the middle Solimões River, in the state of Amazonas (central Amazon, Brazil) and the relative condition factor (Kn). Out of 70 necropsied specimens, 90% had the gills parasitized by the helminth Anacanthorus paraspathulatus Kritsky, Boeger & Van Every, 1992 (Dactylogyridae: Anacanthorinae) and the intestine by Eustrongylides Jägerskiöld 1909 (Nematoda: Dioctophymatidae) larvae. A total of 19,763 specimens of A. paraspathulatus were collected, but the infection by Eustrongylides sp. larvae seemed to be accidental, after all, only three hosts were trophically infected. However, there was no significant difference (p<0.05) in the Kn of parasitized and non-parasitized fish, indicating that the intensity these parasites not affected the health of host. This is the first report on parasitic infection rates for M. duriventre, as well on infections by Eustrongylides sp. for this host.

Publication year: 2012

Types of publication: Journal article

Unit: Embrapa Amapá

Keywords: Amazonas, Amazonia brasileira, Parasito animal, Peixe de água doce