Aeromonas spp. NA ÁGUA E COMEDOUROS DE Oreochromis niloticus (Linnaeus 1758) EM UMA PISCICULTURA NO SERTÃO DA BAHIA

• DOI: https://doi.org/10.22533/at.ed.06124110110

• Palavras-chave: Tanques-rede; tilapicultura; patologia; sanidade.

• Keywords: Net cage; tilapia culture; disease; sanity.

• Abstract: Diseases caused by bacteria of the Aeromonas genus are frequently found in farmed Oreochromis niloticus, which can cause epidemic outbreaks and high mortality in fish farming. Therefore, the aim of this study was to investigate the presence of Aeromonas spp. in the water and feeder of a net-tank fish farm located in the backlands of Bahia, Brazil. Samples were taken from January to April 2023. The water samples were collected using sterilized borosilicate bottles and the feeder samples were taken from the mesh of the feeders 25 days after immersion in the net tanks. Aliquots of 100μL of the samples were inoculated into sterile Petri dishes containing GSP Agar, MIAB and KAPER`S culture media. The plates were incubated in a bacteriological incubator at 35°C for 72 hours, 35°C for 48 hours and 24°C for 24 to 48 hours for the GSP Agar, MIAB and KAPER`S media, respectively. The presence of the bacterium Aeromonas spp. was detected in the water and feeders in all the months investigated. The water and feeders investigated may be agents of bacterial contamination by Aeromonas spp. and may pose a risk of a possible outbreak of aeromoniasis, when related to inadequate sanitary management of the fish farm. Research into this microorganism is relevant due to the lack of knowledge about its presence in aquatic ecosystems in the caatinga region. Thus, based on the prophylactic methods of sanitary management in fish farms, it is necessary to sanitize the feeders in less than 25 days of cultivation or when they have apparent biofilm, as a preventive measure for animal and human health.