Title:	Diversity and community ecology of metazoan parasites in Pimelodus ornatus (Siluriformes: Pimelodidae) from the Amazonas River in Brazil.
Authors:	LIMA, E. S. OLIVEIRA, M. S. B. TAVARES-DIAS, M.
Affiliation:	ELVIS SILVA LIMA, UNIVERSIDADE DO ESTADO DO AMAPÁ; MARCOS SIDNEY BRITO OLIVEIRA, UNIVERSIDADE FEDERAL DO AMAPÁ; MARCOS TAVARES DIAS, CPAF-AP.
Date Issued:	2021
Citation:	Revista Brasileira de Parasitologia Veterinária, v. 30, n. 3, e006021, 2021.
Description:	The present study investigated the metazoan parasite community in Pimelodus ornatus from the Amazon River, in the state of Amapá (Brazil). Of 71 fish examined, 70.4% were parasitized by Demidospermus sp. (Monogenea), Cucullanus pinnai, Procamallanus (Spirocamallanus) inopinatus and Contracaecum sp. (Nematoda) and plerocercoids from Proteocephalidae gen. sp. (Cestoda). The dominance was of nematode species such as Procamallanus (S.) inopinatus and Contracaecum sp. The parasites showed a highly aggregated dispersion and a predominance of hosts infected by one species of parasite. The parasite community was characterized by a low Shannon diversity index, low evenness and low species richness. The richness of parasite species, Shannon's diversity index, abundance of P. (S.) inopinatus and Proteocephalidae gen. sp. showed a positive correlation with the length of the hosts. Therefore, the size of the hosts had an influence on the parasite community and infracommunities, as well as their intermediate position in the food web. This is the first record of P. (S.) inopinatus and Contracaecum sp. for P. ornatus.
Thesagro:	Parasitose Cabeçudo Peixe
NAL Thesaurus:	Pimelodidae Siluriformes
DOI:	https://doi.org/10.1590/S1984-29612021065
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAF-AP)