Trypanosomatids of four Loricariidae fish species in western Amazon rivers
DOI:
https://doi.org/10.53660/CONJ-099-116Palavras-chave:
Neotropical, Hemoparasitismo, Morfotipo, DistribuiçãoResumo
The presence of trypanosomatids in fish is well known and can occur in many fish species worldwide. In this sense, this study aims to report the occurrence of Trypanosoma sp. in four species of the Loricariidae family in the western Amazon, as well as the morphology of these hemoparasites. The fish were collected in three sub-basins of the states of Acre and Amazonas, Brazil. Fish blood samples were collected by cardiac puncture, with smears made for quantification, morphometric measurements, and morphotyping of the trypanosomes found. We estimated the prevalence and parasitism density data. The morphometric variables of Trypanosoma sp. were subjected to analysis of variance. We found new reports of Trypanosoma distribution and occurrence in Loricariidae species for western Amazonia. The examined fish showed infection by more than one Trypanosoma spp. morphotype A has been identified infecting Loricariichthys anus, Sturisoma cf. robustum, and Loricaria cataphracta, morphotype B occurred in all fish species, and morphotypes C, D, and E occurred only in Loricaria sp. There was a significant difference between the morphotypes according to the morphometric parameters. Thus, this study significantly clarified the morphological variation, distribution, and diversity of Trypanosoma hosts.
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