Intropica
Clinical diagnosis of monogenea in fingerling fish farm in Arauca
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Keywords

health; ichthyopathology; biofloc; parasitology; disinfection

How to Cite

Cala Delgado, D. L., Álvarez Rubio, N. C., Muñoz Rodríguez, F. A., Blanco Torres, C. A., & Yunis Aguinaga, J. (2018). Clinical diagnosis of monogenea in fingerling fish farm in Arauca. Intropica, 13(1), 57–63. Retrieved from https://revistas.unimagdalena.edu.co/index.php/intropica/article/view/2356

Abstract

  Within the biological diseases in fish farming, there are those caused by parasites mainly by the monogeneous class causing great economic losses in aquaculture. The objective of this document is to report the clinical diagnosis of monogeneous parasites in fishes farmed under intensive systems, implementing biofloc technology (BFT) in two municipalities of the department of Arauca. The first case occurred in the Fish farming association of El Vergel, municipality of Arauquita, in red tilapia fingerlings (Oreochromis spp.). In the municipality of Arauca, at the Picure experimental farm (PEF), the second parasitic infestation occurs in yamu fingerlings (Brycon siebenthalae). In both cases, the parameters of physical and chemical quality of water were evaluated with equipment and methodologies established, the macro and microscopic evaluation of the fishes were carried out in the laboratory of freshwater species of the Universidad Cooperativa de Colombia based in Arauca. The parameters of water quality were found in the ideal ranges for fish production, the only value below the recommended was the settleable solids. The macroscopic lesions found were exophthalmos, ascites, hemorrhages, fins and eroded skin; in the microscopic evaluation were evident objects between gill lamellae that do not correspond to normal anatomical structures which agrees with parasitic microorganisms and by morphological characteristics it was possible to establish the presence of monogeneous in the studied fingerlings. Treatment with white salt at doses of 3 g/l of water and changes of water pre-treated with formaldehyde at a rate of 10 ml/l of water was established but this did not work which caused the death of 95% of the total population of red tilapia and the 100% of the yamu fingerlings. The disinfection of water and fingerlings before sowing is the most recommended to avoid Ichthyopathological problems.
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