Aspectos microbiológicos e parasitológicos de traíra (Homplias malavaricus) provenientes da Baixada Maranhense, município de São Bento

Abstract

With the objective of verifying the microbiological and parasitological aspects of fish (Hoplias malabaricus), coming from São Bento city, Maranhão state, it was evaluated 40 samples of fish as the determination of the most probable number (MPN) of total coliforms and to 45 Celsius degree, mesophyllas aerobic bacteria counting, Staphylococcus positive and negative coagulase researches, Salmonella spp. and Aeromonas bacterium, according to American Public Health Association (APHA), described by Silva et al. (2007). We analyzed 12 water samples for parameters I-chemical and microbiological recommended by CONAMA 357 (2005). As for the parasitological aspects, it was researched endoparasites, according Amato’s technique (1991) and Pavanelle’s technique (1940), in 70 fish, being verified the parasitism’ indexes and coefficient. The microbiological results showed values of total coliforms and to 45 Celsius degree, varying to < 3 even > 1,1 x 103 MPN/g, respectively, where 24 (60%) of the samples they were in disagreement with the recommended patterns by ANVISA RDC n° 012, January, 2001. As for the isolated ones bacterial, E. coli was isolated in 14 samples, the mesophyllas aerobic bacteria counting, the data varied from 9 x 102 to 109 UFC/g and the population of Staphylococcus negative coagulase varied from 102 to 1,8 x 108 UFC/g. Salmonella spp. was detected in 2 (5%) of the samples and as for the research of Aeromonas spp., 36 (90%), they were polluted for this microorganism, being 7 (19,4%) polluted samples for A. cavie and 29 (80,6%) for A. hidrophylla. The results of water analysis with average values were: pH 6.9, 543.8 turbidity, electrical conductivity of 882.7, 34.3 Calcium, Magnesium 97.5, 131.8 total hardness, total alkalinity chlorides of 66.7 and 400. The most probable number of coliform ranged from 7 to > 1600NMP/mL. As for the parasitological results they were identified nematodeos, with zoonotical potential of the Contracaecum spp., Pseudoterranova spp., Eustrongylides spp.; monogenetics Gyrodactirus spp., Dactylogirus spp. and larva Acanthella of Acanthocephalo. Of the 70 (100%) fishes, 64 (91,4%) they were sponged, with prevalence of 82,8% (58) for the nematodeo Contracaecum spp., 65,7% (46), Pseudoterranova spp., 7,1% (5), Eustrongylides spp., 71,4% (50), monogenetics and larva Acanthella of Acantocephalo, respectively. The largest intensity width (1-30), variation coefficient was verified for the nematodeo Pseudoterranova spp., the medium intensity (7,3), abundance index (6,7), dominance coefficient (36,4) it went to the Contacaecum spp., all of the parasites were in the mesenterio of the abdominal cavity, encysted in larval form. The results of the research demonstrate that the coming fish of the municipal district of São Bento-MA, they are in unsatisfactory hygienic sanitary conditions, so much in the microbiological and parasitological aspects, exposing the consumer to I scratch out of health.