Resumo

BARRIOS-GUTIERREZ, Juan José et al. Helminth parasites of freshwater fishes fromTehuacán-Cuicatlán Biosphere Reserve, Oaxaca region. Rev. Mex. Biodiv. [online]. 2018, vol.89, n.1, pp.29-38. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2018.1.1851.

In this study, a checklist of the helminth parasites of freshwater fishes from Tehuacán-Cuicatlán Biosphere Reserve in the area of Oaxaca is presented. From October to November 2015, 235 fish of 13 species were analysed from 21 localities. A total of 1,466 worms of 16 helminth taxa were recorded: 6 trematodes (3 adults and 3 metacercariae), 4 monogeneans, 1 adult cestode and 5 nematodes (4 adults and 1 larva). The helminth species Pseudoparacreptotrema macroacetabulata, Schyzocotyle acheilognathi, and Rhabdochona kidderi kidderi reached the highest prevalence (100%) in at least 1 site; Rhabdochona kidderi kidderi showed the highest abundance (34±0), while Urocleidoides simonae presented the highest average intensity (116 ± 0). The species richness showed low values compared with previous studies in the Papaloapan River; the fish Vieja fenestrata had the highest helminth species richness (5). Most helminth records presented here are new to Tehuacán-Cuicatlán Biosphere Reserve, Oaxaca region. The data generated in this study will be useful in ecological, host-parasites relationship, biogeographic and conservation studies in the Tehuacán-Cuicatlán Biosphere Reserve in the area of Oaxaca.

Palavras-chave : Oaxaca; Helminth fauna; Host; Papaloapan River; Introduced species.

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