AI Article Synopsis
- A new species of trematode was identified in the intestine of the Brazilian catfish, using both morphological features and molecular techniques for analysis.
- The new species is similar to another species described in 1978 but differs in oral and ventral sucker sizes and vitellaria distribution.
- Phylogenetic analysis revealed that the new species is closely related to existing species, showing low genetic divergence, which supports its classification as a unique taxon within the broader genus.
Article Abstract
We described n. sp. from the intestine of the Brazilian catfish (Haseman, 1911) (= ) based on integrative analyses using morphological and molecular approaches. n. sp. closely resembles morphologically Vicente, Santos & Souza, 1978, which was described from a siluriform fish in Northern Brazil; however, the two species differ mainly in the oral and ventral sucker sizes and the distribution of the vitellaria. The phylogenetic analyses of the 28S rDNA placed the sequences of the new species in a monophyletic clade together with all other spp. and as sister taxon of Alcantara, Ebert, Ferreira-Silva, Forti, Morais, Pérez-Ponce de León & Silva, 2024, a parasite from a Brazilian anuran. Genetic divergences between the new species and other spp. varied from 0.2% to 4.3%, further corroborating the distinction of the new taxon. n. sp. is the 18th nominal species known from South America and the 22nd erected in the genus. This is the first study reporting a trematode in spp. hosts and the second parasitological survey carried out for , a poorly known small endemic fish.
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| http://dx.doi.org/10.1017/S0022149X2400052X | DOI Listing |
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