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Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Abstract

CARDOSO, Adriele Carolina Franco; OLIVEIRA, Marcos Sidney Brito; NEVES, Ligia Rigôr  and  TAVARES-DIAS, Marcos. Metazoan fauna parasitizing Peckoltia braueri and Pterygoplichthys pardalis (Loricariidae) catfishes from the northeastern Brazilian Amazon. Acta Amaz. [online]. 2017, vol.47, n.2, pp.147-154. ISSN 0044-5967.  https://doi.org/10.1590/1809-4392201603232.

This study investigated the metazoan parasite fauna in Peckoltia braueri and Pterygoplichthys pardalis from a tributary of the Amazon River system, in northern Brazil. In P. braueri, 630 parasites were collected, belonging to Unilatus unilatus, Nothogyrodactylus sp., Genarchella genarchella, Proteocephalus sp., Gorytocephalus elongorchis, Dolops longicauda and Hirudinea gen. sp., with a dominance of monogenean species. In P. pardalis, 120 parasites were collected, belonging to U. unilatus, Acanthostomum gnerii and Gorytocephalus elongorchis, and this acanthocephalan was the dominant species. In both hosts, the parasites presented clumped distribution, high prevalence, low abundance, low Shannon diversity, and low species richness, with a predominance of helminth species. In P. braueri, host length was positively correlated with parasite species richness and Shannon index. There was no difference in the body condition of parasitized and non-parasitized fishes in either host. This was the first report of these parasites in P. braueri and P. pardalis.

Keywords : Digenea; diversity; helminths; parasites; freshwater fishes..

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