01711naa a2200205 a 450000100080000000500110000800800410001902400630006010000210012324501480014426000090029252010110030165000140131265000170132665000220134365000130136570000200137870000190139877300880141721467772022-11-15       2021    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.5433/1679-0359.2021v42n3Supl1p20572DOI1 aTAVARES-DIAS, M.  aHistopathological alterations caused by monogenean parasites the gills of tambaqui Colossoma macropomum (Serrasalmidae).h[electronic resource]  c2021  aMonogeneans are ectoparasites of fish with a global distribution. In farmed fish, high infestations may result in morbidity and mortality. This study investigated the histopathological effects of three species of monogeneans Anacanthorus spathulatus, Notozothecium janauachensis and Mymarothecium boegeri on the gills of farmed Colossoma macropomum. Parasitological indices revealed a prevalence of 100%, and a mean abundance of 81.3 ± 11.8. This infection caused displacement of the gill epithelium, focal hyperplasia of epithelial cells, lamellar fusion, congestion and shortening of the secondary lamellae of gills, in addition a complete fusion of the secondary lamellae. However, these tissue alterations were reversible and punctually located lesions, which may not compromise the normal functioning of gills. Lastly, this study showed the potential damages caused by parasite monogeneans to gills of infested fish, thus sanitary management is essential for the growth of fish farm of C. macropomum.  aParasites  aInfestação  aProdução Animal  aTambaqui1 aFERREIRA, G. V.1 aVIDEIRA, M. N.  tSemina: Ciências Agrária Londrinagv. 42, n. 3, p. 2057-2064, 2021. Suplemento 1.