ECOLOGICAL ASPECTS OF THE PARASITES COMMUNITY IN TWO LORICARIIDAE SPECIES FROM THE IGARAPÉ FORTALEZA BASIN, AMAPÁ STATE, BRAZIL

• Autor(a) principal: Gonçalves, Raissa Alves
• Data de Publicação: 2014
• Outros Autores: Oliveira, Marcos Sidney Brito, Santos, Evandro Freitas, Tavares-Dias, Marcos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Biota Amazônia
• Texto Completo: https://periodicos.unifap.br/index.php/biota/article/view/779

Parasites have been recognized as important components of ecosystems. These use the environment to its transmission and can infect diverse fish species in the ecosystem. This study investigated the parasites ecology in Squaliforma emarginata and Harttia duriventris from the Igarapé Fortaleza basin, in municipality of Macapá, Amapá State, Northern Brazil. For both fish there was similar infection level by Ichthyophthirius multifiliis (Ciliophora), parasite specie dominant and that had an aggregate dispersion.  Spironucleus sp. (Hexamitidae) occur only in gills of H. duriventris, but Trinigyrus mourei (Monogenoidea) e Procamallanus inopinatus (Camallanidae) were found only in S. emarginata. Brillouin index, parasites species richness, evenness index and Berger-Parker index were higher for S. emarginata when compared to H. duriventris, but to both hosts the community of parasites was characterized by low diversity and low uniformity. In H. duriventris and S. emarginata, low parasitism not influenced the relative condition factor (Kn) of the hosts. In S. emarginata there was positive correlation in abundance of I. multifiliis with length, body weight and Kn of the hosts, while that in H. druventris only the body weight and Kn present positive correlation with the abundance of I. multifiliis in gills. This was the first report of I. multifiliis, Spironucleus sp. and P. inopinatus to H. duriventris and S. emarginata.Keywords: Amazonia; Diversity; Parasites; Freshwater fish; Metazoans.