First report of Rhabdochona acuminata (Nematoda, Rhabdochonidae) in Astyanax aff. fasciatus (Characiformes, Characidae) from Lake Guaíba, southern Brazil

By

Gallas, Moisés
Calegaro-Marques, Cláudia
Amato, Suzana Bencke

Type

Article

Date of Publication

2019-12-13

Original Publication

Neotropical Biology and Conservation

Volume

14

Series / Issue

Issue: 4

Pages

479--488

Subjects

caracídeo , Characid , espirurídeo , Morfologia , Morphology , nematode , nematóide , spirurid , Taxonomía , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Brazil Universidade do Vale do Rio dos Sinos

Identifiers

DOI: https://doi.org/10.3897/neotropical.14.e49025

 

Abstract

Specimens of Rhabdochona (Rhabdochona) acuminata (Molin, 1860) were collected in Astyanax aff. fasciatus (Cuvier, 1819) from Lake Guaíba, municipalities of Guaíba (30°08.28'S, 51°18.53'W) and Barra do Ribeiro (30°17.11'S, 51°18.01'W), southern Brazil. In the present study, the prevalence of R. (R.) acuminata was low (1.43%) when compared to other studies performed withAstyanaxspp. from Brazil. The specimens of R. (R.) acuminata showed some morphological differences (mainly the deirids) that have not yet been reported for the species. This is the first report of R. (R.) acuminata from Lake Guaíba, filling a gap of occurrence of this nematode in South America.