Resumen de Microhabitat of monogenea and copepodids of lernaea cyprinacea on the gills of four brazilian freshwater fish
Gabriela Tomas Jerônimo, Eduardo Luiz Tavares Gonçalves, Daniela Bampi, Ágata Paseto, Santiago Benites de Padua, Márcia Mayumi Ishikawa, Maurício Laterça Martins
This study evaluated the ectoparasite distribution on the gill archs of pond-reared pacu (Piaractus mesopotamicus Holmberg, 1887), hybrid patinga (P. mesopotamicus female x P. brachypomus (Cuvier, 1817) male), hybrid tambacu (Colossoma macropomum (Cuvier, 1816) female x P. mesopotamicus male) and hybrid surubim (Pseudoplatystoma reticulatum female x P. corruscans Spix & Agassiz, 1829 male). A total of 300 fish were examined from fish farms in West-Central Brazil for parasitological assessment of the gill arches I, II, III and IV, from the outer to inner arch, respectively. Only the monogenean Mymarothecium boegeri Cohen & Kohn, 2005 and Anacanthorus penilabiatus Boeger, Husak & Martins, 1995 from the hybrid patinga showed the greatest (p<0.05) mean intensities on the gill arch I when compared to gill arch IV. Microhabitat preference was not observed in the other fish examined. Copepodids of Lernaea cyprinacea Linnaeus 1758 showed no microhabitat preference. This study highlighted the fact that under culture conditions, homogeneous distribution of parasites on the gills may occur.
