Parasitic fauna in hybrid tambacu from fish farms

Pesquisa Agropecuária Brasileira

Ronilson Macedo Silva²  Marcos Tavares-dias¹  Maycon Willian Reis Dias¹  Márcia Kelly Reis Dias¹  Renata Das Graças Barbosa Marinho¹ 

[1] ,Universidade do Estado do AmapáMacapá AP ,Brazil

关键词: Colossoma macropomum;    Ichthyophthirius multifiliis;    Piaractus mesopotamicus;    ectoparasite;    native fish;    host-parasite relationship;    Colossoma macropomum;    Ichthyophthirius multifiliis;    Piaractus mesopotamicus;    ectoparasita;    peixe nativo;    relação parasito-hospedeiro;   

DOI  :  10.1590/S0100-204X2013000800034

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the parasitic fauna of hybrid tambacu (Colossoma macropomum x Piaractus mesopotamicus) from fish farms and the host-parasite relationship. A hundred and fourteen fish were collected from four fish farms in Macapá, in the state of Amapá, Brazil, 80.7% of which were infected by: Ichthyophthirius multifiliis (Ciliophora); Piscinoodinium pillulare (Dinoflagellida); Anacanthorus spatulatus, Notozothecium janauachensis, and Mymarothecium viatorum (Monogenoidea); Neoechinorhynchus buttnerae (Acanthocephala); Cucullanus colossomi (Nematoda); Perulernaea gamitanae (Lernaeidae); and Proteocephalidae larvae (Cestoda). A total of 8,136,252 parasites were collected from the examined fish. This is the first record of N. buttnerae, C. colossomi, N. janauachensis, M. viatorum, and Proteocephalidae for hybrid tambacu in Brazil. Ichthyophthirius multifiliis was the most prevalent parasite, whereas endohelminths were the less. A positive correlation was observed between number of I. multifiliis and total length and weight of fish, as well as between number of P. gamitanae and total length. The infection by I. multifiliis had association with the parasitism by Monogenoidea. Low water quality contributes to high parasitism of hybrid tambacu by ectoparasites, which, however, does not influence the relative condition factor of fish.

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