01858naa a2200217 a 450000100080000000500110000800800410001902200140006002400510007410000250012524501760015026000090032652011120033565000140144765000140146165000150147565000240149070000230151470000210153777300820155821468262022-11-15       2022    bl uuuu     u00u1 u    #d  a1984-29617 ahttps://doi.org/10.1590/S1984-296120220142DOI1 aBRITO-JÚNIOR, I. A.  aEcology and diversity of metazoan parasites infecting Geophagus altifrons (CichliformesbCichlidae) from the Amazon River system in northern Brazil.h[electronic resource]  c2022  aThe aim of this study was to investigate the ecology and diversity of community and infracommunities of metazoan parasites Geophagus altifrons (Heckel, 1840) in Rio Jari, in the state of Amapá, in the eastern Amazon region. From the total of 31 fish examined, 90.3% were parasitized by one or more species, collecting a total number of 806 parasites. The parasites species identified were: Sciadicleithrum geophagi, Posthodiplostomum sp., Procamallanus (Spirocamallanus) inopinatus, Raphidascaris (Sprentacaris) sp., Genarchella genarchella, Gorytocephalus spectabilis and Ergasilus xinguensis. Most of the parasites showed an aggregate dispersion pattern. Brillouin diversity index, uniformity and species richness of parasites were low. The component community of parasites was constituted by ectoparasites and endoparasites, but with a predominance of ectoparasites. The body size of hosts had a low effect on the parasites infracommunities. This first eco-epidemiological study for G. altifrons reports these parasites in a host, for the first time, with the exception of S. geophagi and E. xinguensis.  aCichlidae  aParasites  aInfecção  aPeixe de Água Doce1 aOLIVEIRA, M. S. B.1 aTAVARES-DIAS, M.  tRevista Brasileira de Parasitologia Veterináriagv. 31, n. 1, e019721, 2022.