RESUMEN
This study presents the helminthofauna of digenean parasites of Acestrorhynchus falcirostris in the state of Amazonas (Brazil). Eight species belonging to four families were recovered: Metacercariae of Austrodiplostomum compactum (Diplostomidae) and Clinostomum marginatum (Clinostomidae) and mature specimens of Bellumcorpus majus, Prosorhynchoides carvajali, Rhipidocotyle santanaensis (Bucephalidae); Prosthenhystera obesa (Callodistomidae); Genarchella genarchella (Derogenidae) and Phyllodistomum spatula (Gorgoderidae). Examining specimens belonging to the genus Bellumcorpus collected from A. falcirostris, were observed a great variation in the size and shape of testes, which also could be observed in the type specimens of Bellumcorpus majus and B. schubarti. Considering the similar morphology and morphometric characteristics of both species, in this paper B. schubarti is considered synonym of B. majus. Acestrorhynchus falcirostris is a new host records for all these species of digenean, except to A. compactum and C. marginatum. Prosorhynchoides carvajali is referred for the first time in Brazil.
Asunto(s)
Characiformes/parasitología , Enfermedades de los Peces/parasitología , Trematodos/fisiología , Infecciones por Trematodos/veterinaria , Animales , Brasil , Femenino , Masculino , Trematodos/aislamiento & purificación , Infecciones por Trematodos/parasitologíaRESUMEN
Abstract This study presents the helminthofauna of digenean parasites of Acestrorhynchus falcirostris in the state of Amazonas (Brazil). Eight species belonging to four families were recovered: Metacercariae of Austrodiplostomum compactum (Diplostomidae) and Clinostomum marginatum (Clinostomidae) and mature specimens of Bellumcorpus majus, Prosorhynchoides carvajali, Rhipidocotyle santanaensis (Bucephalidae); Prosthenhystera obesa (Callodistomidae); Genarchella genarchella (Derogenidae) and Phyllodistomum spatula (Gorgoderidae). Examining specimens belonging to the genus Bellumcorpus collected from A. falcirostris, were observed a great variation in the size and shape of testes, which also could be observed in the type specimens of Bellumcorpus majus and B. schubarti. Considering the similar morphology and morphometric characteristics of both species, in this paper B. schubarti is considered synonym of B. majus. Acestrorhynchus falcirostris is a new host records for all these species of digenean, except to A. compactum and C. marginatum. Prosorhynchoides carvajali is referred for the first time in Brazil.
Resumo Esse estudo apresenta a fauna helmintológica de Digenea parasitos de Acestrorhynchus falcirostris no estado do Amazonas. Oito espécies pertencentes a quatro famílias foram estudadas: Metacercarias de Austrodiplostomum compactum (Diplostomidae) e Clinostomum marginatum (Clinostomidae) e espécimes adultos de Bellumcorpus majus, Prosorhynchoides carvajali, Rhipidocotyle santanaensis (Bucephalidae); Prosthenhystera obesa (Callodistomidae); Genarchella genarchella (Derogenidae) e Phyllodistomum spatula (Gorgoderidae). Examinando espécimes pertencentes ao gênero Bellumcorpus coletados de A. falcirostris, foi observada uma grande variação no tamanho e forma dos testículos, que também pode ser observada nos espécimes tipo de Bellumcorpus majus e B. schubarti. Considerando a morfologia e características morfométricas similares de ambas as espécies, neste artigo, B. schubarti é considerado sinônimo de B. majus. Acestrorhynchus falcirostris representa um novo hospedeiro para todas essas espécies de Digenea, exceto para A. compactum e C. marginatum. Prosorhynchoides carvajali é referido pela primeira vez no Brasil.