Artículos de revistas
Parasitic infestations in hybrid surubim catfish fry (Pseudoplatystoma reticulatum x P. corruscans)
Parasitic infestations in hybrid surubim catfish fry (pseudoplatystoma reticulatum x P. corruscans)
Fecha
2012-01-01Registro en:
Revista Brasileira de Medicina Veterinaria, v. 34, n. 3, p. 235-240, 2012.
2527-2179
0100-2430
2-s2.0-84891700007
Autor
Universidade Estadual Paulista (UNESP)
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Piraí Piscicultura
Universidade Federal de Santa Catarina (UFSC)
Faculdade de Ciências Biológicas e Ambientais
Institución
Resumen
This study evaluated parasitic infestations in the hybrid surubim catfish (Pseudoplatystoma reticulatum ♀ x P. corruscans ♂) during the initial phase of rearing. 50 fish of lengths ranging from 5.7 to 20.3 cm and weights from 1.2 to 48.8 g were examined. Among the fish evaluated, only 15 (30%) were parasite-free, while at least one type of parasite was diagnosed in all of the other 35 (70%). Among these, the protozoan Ichthyophthirius multifiliis, Epistylis sp. and Trichodina sp. were observed. Occurrences of myxosporidians were seen, represented by Henneguya sp. and a metazoan belonging to the class Monogenoidea. The ciliated protozoa I. multifiliis, Epistylis sp. and Trichodina sp. were the main parasites infesting the gills and tegument of hybrid catfish fry. The peritrichid Epistylis sp. may be an emerging parasite in Brazil.