Metazoários parasitos de Calophysus macropterus (Lichtenstein, 1819) (Actinopterygii: Siluriformes) um peixe omnívoro, necrófago da Amazônia

Abstract

We analyzed 80 specimens of Calophysus macropterus caught during four expeditions in June, August, September and October 2023 in the Catalão lake complex, Iranduba, Amazonas state. The fish measured an average of 34.2 ± 9 cm of standard length and weighed 630 ± 10g. Were collected 2,018 specimens of parasitic metazoans, included in four phyla and seven taxonomic groups. A total of 28 species parasitized C. macropterus. Nine species of Monogenoidea: 464 Ameloblastella unapi; 72 Ameloblastella sp. n.; 347 Demidospermus macropteri; 90 Demidospermus sp. n. 1; 68 Demidospermus sp. n. 2; 97 Demidospermus sp. n. 3; 80 Demidospermus sp. n. 4; 132 Demidospermus sp. n. 5; 1 Gyrodactylus sp. Four of Digenea: 3 metacercariae of Austrodiplostomum compactum; 54 Diplostomum sp.; 19 Tylodelphys sp.; 1 Genarchella genarchella. Three of Cestoda: 46 adults and plerocercoids of Proteocephalidae gen. n. et sp. n.; 36 Proteocephalus sp.; 7 Nominoscolex. Nine of Nematoda: 63 L2 and L3 larvae of Anisakis sp.; 284 Anisakidae gen. n. et sp. n.; 13 Pseudoterranova sp.; 2 Contracaecum spp. Type I and 13 Type II; 1 Brevimulticaecum sp.; 1 Procamallanus pimelodus; 35 larvae of Cucullanus pinnai pinnai; 1 Alinema amazonicum. One of Acanthocephala: 9 Neoechinorhynchus sp. n. One of Copepoda: 3 Ergasilus sp. One of Pentastomida: 1 Sebekia sp. The community status is made up of 22 satellite species. Six species of Monogenoidea are secondary species and there were no central species. The dominant species in the C. macropterus component community were those of the Monogenoidea: A. unapi and D. macropteri in high and low water. The greatest richness of parasitic species occurred in high and low water. Diversity indices indicated that the Catalão lake complex presented high richness and diversity of parasitic species in C. macropterus.