DISTRIBUTION AND OCCURRENCE OF CONTRACAECUM SP. IN WESTERN AMAZON FISHES

• Autores: Araujo, Lilian Estefani, Souza Neto, Ademar, Silva, Josivan Conceição, Virgilio, Lucena
• Formato: artículo
• Fecha de Publicación: 2022
• Institución: Universidad Nacional Federico Villarreal
• Repositorio: Revistas - Universidad Nacional Federico Villarreal
• Lenguaje: español
• OAI Identifier: oai:ojs2.revistas.unfv.edu.pe:article/1432
• Enlace del recurso: https://revistas.unfv.edu.pe/NH/article/view/1432
• Nivel de acceso: acceso abierto
• Materia: Nematodos; Peces; Parasitología; Potencial zoonótico; Sequía; Estiagem; Nematoides; Parasitologia; Peixes; Drought; Fishes; Nematodes; Parasitology; Zoonotic potential

Larvae of the genus Contracaecum can be found in several species of fish. This study aims to analyze the prevalence, incidence and average abundance of Contracaecum sp. in fish, and to relate host species richness to parasite abundance. A total of 2888 specimens of host fish were collected, and only 217 specimens showed Contracaecum sp. infections. A total of 64 species of fish were collected, in which the greatest richness of hosts was evidenced during the dry season. During the dry season, the highest prevalence values ​​of Contracaecum sp. were found in Erythrinus erythrinus (P=43.18%) and Acestrorhynchus sp. (P=17.39%).  The values ​​of high abundance (AM= 0.73) and average intensity (IM= 9.77) were evidenced in Sorubim lima. During this period, the relationship between host richness and occurrence of Contracaecum sp. was also significant. In conclusion, the study showed the occurrence and prevalence of Contracaecum sp. in a great richness of host fishes, mainly species of great commercial importance. The decrease of the river level during the dry season increases the richness of infected hosts.