Abstract

OROZCO-ROJAS, Dafne et al. Bacteriological status and the water quality in ornamental aquaculture farms in Morelos, Mexico. Abanico vet [online]. 2022, vol.12, e2020-79.  Epub June 23, 2023. ISSN 2448-6132.  https://doi.org/10.21929/abavet2022.25.

This work aimed to determine the bacteriological status and the water quality during the culture process of four aquaculture farms in Morelos, Mexico. The bacteriological analyses were done from fishes (Poecillia sphenops), feed and culture water samples, and culture media BHI, TCBS and EMB; the isolated bacteria were identified by biochemical tests. Samples from ponds and supply channels were analyzed to determine the water quality according to the official Mexican standards. Microbiological results of water indicated that supply ditches presented a more considerable bacterial diversity and load than the analyzed farms, identifying ten bacterial species belonging to Proteobacteria and Firmicutes; regarding feed and fish samples, species like Bacillus megaterium, Vibrio alginolyticus, and Enterococcus faecalis were identified. According to the official Mexican standards stipulations, all production units have good water quality; however, Las Estacas ditch exceeds LMP of faecal coliforms (2400 NMP 100 mL-1) and phosphorus (0.83 mg L-1). In conclusion, the sanitary quality of the organisms produced in the farms is influenced by contamination of the supply ditches.

Keywords : ornamental fishes; Poecillia sphenops; water quality; Morelos.

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