Histopathological alterations caused by monogenean parasites the gills of tambaqui Colossoma macropomum (Serrasalmidae)

Marcos Tavares-Dias Dias, Gabriel Valente Ferreira, Marcela Nunes Videira

Abstract


Monogeneans 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.

Keywords


Fish; Gills; Parasites; Tambaqui; Tissues alterations.

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References


Aragort, V., Morales, G., León, E., Pino, L. A., Guillén, A., & Silva, M. (2002). Patologías asociadas a monogeneos branquiales en cachama bajo cultivo. Veterinaria Tropical, 27(2), 75-85.

Boeger, W. A., & Viana, R. T. (2006). Monogenoidea. In V. E. Thatcher (Ed.), Amazon fish parasites (pp. 42-116). Sofia, Moscow: Pensoft Publishers.

Braga, M. P., Araújo, S. B. L., & Boeger, W. A. (2014). Patterns of interaction between Neotropical freshwater fishes and their gill Monogenoidea (Platyhelminthes). Parasitology Research, 113(2), 481-490. doi: 10.1007/s00436-013-3677-8

Bush, A. O., Lafferty, K. D., Lotz, J. M., & Shostak, A. W. (1997). Parasitology meets ecology on its own terms: Margolis et al. Revisited. Journal of Parasitology, 83(4), 575-583. doi: 10.2307/ 3284227

Campos, C. M., Moraes, J. R. E., & Moraes, F. R. (2011). Histopathology of gills of Piaractus mesopotamicus (Holmberg, 1887) and Prochilodus lineatus (Valenciennes, 1836) infested by monogenean and myxosporea, caugth in Aquidauana River, State of Mato Grosso do Sul, Brazil. Revista Brasileira de Parasitologia Veterinária, 20(1), 67-70. doi: 10.1590/S1984-2961201100010001 4

Eiras, J. C., Takemoto, R. M., & Pavanelli, G. C. (2006). Métodos de estudo e técnicas laboratoriais em parasitologia de peixes (2a ed. rev. Ampl.). Maringá: Eduem.

Evans, D. H., Piermarini, P. M., & Choe, K. P. (2005). The multifunctional fish gill: dominant site of gas exchange, osmoregulation, acid-base regulation, and excretion of nitrogenous waste. Physiological Review, 85(1), 97-177. doi: 10.1152/physrev.00050.2003

Grano-Maldonado, M. I., Rodríguez-Santiago, M. A., García-Vargas, F., Nieves-Soto, M., & Soares, F. (2018). An emerging infection caused by Gyrodactylus cichlidarum Paperna, 1968 (Monogenea: Gyrodactylidae) associated with massive mortality on farmed tilapia Oreochromis niloticus (L.) on the Mexican Pacific coast. Latin American Journal of Aquatic Research, 46(5), 961-968. doi: 10.3856/vo l46-issue5-fulltext-9

Hoai, T. D. (2020). Reproductive strategies of parasitic flatworms (Platyhelminthes, Monogenea): the impact on parasite management in aquaculture. Aquaculture International, 28, 421-447. doi: 10.1007/s10499-019-00471-6




DOI: http://dx.doi.org/10.5433/1679-0359.2021v42n3Supl1p2057

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433 / 1679-0359
E-mail:  semina.agrarias@uel.br
Este obra está licenciado com uma Licença  Creative Commons Atribuição-NãoComercial 4.0 Internacional