First report of austrodiplostomum compactum and ithyoclinostomum dimorphum in trahira (hoplias malabaricus) from the middle course of the Rio Doce, Minas Gerais, Brazil

F Belei,W.M.S Sampaio,R.M Takemoto,S.R Ferreira,L.M Perin,F.R Braga,J.A Dergam,J.V De Araújo

doi:10.1590/s1808-16572013000200017

F Belei, W.M.S Sampaio + Show 6 more

Open Access

https://doi.org/10.1590/s1808-16572013000200017

Copy DOI

Abstract

Austrodiplostomum compactum and Ithyoclinostomum dimorphum are two trematodes commonly found in trahira, but these parasites were never reported in trahiras from Rio Doce. Thus, the aim of this study is to describe the occurrence of A. compactum and I. dimorphum metacercariae in trahira from the middle course of the Rio Doce and to record the presence of eggs in I. dimorphum metacercariae. The parasites were identified and analyzed using methods described previously. There were found 10 A. compactum metacercariae in the aqueous humor of eyes in four of the trahiras and 12 I. dimorphum metacercariae encysted in the peritoneal cavity in five of the trahiras. Maceration of the I. dimorphum metacercariae revealed the presence of eggs. These results demonstrate the broad distribution of these parasites and the first report of these parasites in trahira from Rio Doce.

Highlights

PRIMEIRO RELATO DE AUSTRODIPLOSTOMUM COMPACTUM E ITHYOCLINOSTOMUM DIMORPHUM EM TRAÍRAS (HOPLIAS MALABARICUS) PROVENIENTES DO MÉDIO CURSO DO RIO DOCE, MINAS GERAIS, BRASIL
A. compactum is a digenetic trematode belonging to the order Diplostomida, whose metacercaria parasitise the eyes, brain, pericardium, muscle and peritoneal cavity of many Neotropical fishes (Eiras et al, 2010)
I. dimorphum is a diplostomidae digenetic trematode whose metacercariae are found encysted in the muscle, gills, pericardium, peritoneal cavity and oesophagus of fish bodies and have very elongate, narrow, flat bodies with varying length and width (Pavanelli et al, 1990)

Summary

Introduction

PRIMEIRO RELATO DE AUSTRODIPLOSTOMUM COMPACTUM E ITHYOCLINOSTOMUM DIMORPHUM EM TRAÍRAS (HOPLIAS MALABARICUS) PROVENIENTES DO MÉDIO CURSO DO RIO DOCE, MINAS GERAIS, BRASIL. Austrodiplostomum compactum e Ithyoclinostomum dimorphum são dois trematódeos comumente encontrados em traíras, contudo, esses parasitas nunca foram relatados em traíras do Rio Doce. PALAVRAS-CHAVE: Metacercárias, Austrodiplostomum compactum, Ithyoclinostomum dimorphum, Rio Doce.

Objectives

Results

Conclusion