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BIBTEX RIS

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

2019; UNIVERSIDADE DO VALE DO RIO DOS SINOS; Volume: 14; Issue: 4 Linguagem: Inglês

10.3897/neotropical.14.e49025

ISSN

2236-3777

Autores

Moisés Gallas, Cláudia Calegaro-Marques, Suzana B. Amato,

Tópico(s)

Fish Biology and Ecology Studies

Resumo

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 with Astyanax spp. 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.

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