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OS PARASITOS DE Metynnis Maculatus (KNER, 1860) (ACTINOPTERYGII, SERRASALMINAE) NO RESERVATÓRIO DE TRÊS MARIAS, ALTO RIO SÃO FRANCISCO, MINAS GERAIS, BRASIL

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OS PARASITOS DE Metynnis Maculatus (KNER, 1860) (ACTINOPTERYGII, SERRASALMINAE) NO RESERVATÓRIO DE TRÊS MARIAS, ALTO RIO SÃO FRANCISCO, MINAS GERAIS, BRASIL Anais do XI Fórum da Pós-Graduação da Universidade Federal Rural do Rio de Janeiro OS PARASITOS DE Metynnis maculatus (KNER, 1860) (ACTINOPTERYGII, SERRASALMINAE) NO RESERVATÓRIO DE TRÊS MARIAS, ALTO RIO SÃO FRANCISCO, MINAS GERAIS, BRASIL Maria de Fátima Cancella de Almeida Berto1 & Marilia de Carvalho Brasil-Sato2 1. Mestranda do Programa de Pós-Graduação em Ciências Veterinárias, e-mail: [email protected]; 2. Departamento de Biologia Animal, Instituto de Ciências Biológicas e da Saúde, UFRRJ, e-mail: [email protected]. Palavras-chave: Ecologia parasitária, Peixes de água doce, Taxonomia de parasitos. RESUMO Serrasalminae é composta por muitas espécies de peixes dulcícolas, que apresentam variadas adaptações, inclusive relativas ao hábito alimentar, sendo capazes de ocupar diversos ambientes dentro de sua distribuição conhecida na América do Sul. O pacu peva, Metynnis maculatus (Kner, 1860), representante herbívoro dessa subfamília, é nativo das bacias dos rios Paraguai e Amazonas. Os itens alimentares preferidos do pacu peva incluem sementes e fragmentos de plantas, mas outros itens como zooplâncton, pequenos crustáceos e peixes relacionados às suas dietas não o caracterizam como predador voraz, como alguns peixes dessa subfamília. Recentes estudos ecológicos indicaram que M. maculatus está amplamente distribuída nas bacias hidrográficas da América do Sul, sendo classificada como espécie invasora, inclusive na bacia do Rio São Francisco; embora não seja utilizada para consumo humano, em algumas áreas, constitui a espécie mais capturada pelos pescadores. Na literatura científica já existem registros de espécies de parasitos de M. maculatus nas localidades em que ele foi considerado invasor. Com o objetivo de identificar as espécies que compõem a comunidade parasitária de M. maculatus do alto rio São Francisco, espécimes de pacus pevas coletados no Reservatório de Três Marias (18° 12' 51'' S; 45° 15' 51'' W), Minas Gerais, pelos pescadores locais, estão sendo examinados no Laboratório de Biologia e Ecologia Parasitária da UFRRJ. Os parasitos encontrados serão processados conforme metodologia utilizada em ictioparasitologia. Os resultados desse trabalho em desenvolvimento permitirão ampliar o conhecimento sobre os requerimentos ecológicos de M. maculatus na região do alto rio São Francisco; sinalizar as espécies de parasitos dos pacus pevas que têm potencial para serem transmitidas à comunidade ictíica nesse sistema hídrico e as espécies de parasitos que poderão comprometer o desenvolvimento e o bem-estar de espécies de peixes nativas. Agência Financiadora: CNPq; CAPES – Edital 032/2010-Parasitologia Básica. Apoio: 1ªCIT/CODEVASF, Três Marias, MG CD-ROM, 2016. ISSN 1984-0632. .
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