Escherichia coli in the surface waters and in oysters of two cultivations of Guaratuba Bay - Paraná - Brazil



Document title: Escherichia coli in the surface waters and in oysters of two cultivations of Guaratuba Bay - Paraná - Brazil
Journal: Brazilian archives of biology and technology
Database: PERIÓDICA
System number: 000365577
ISSN: 1516-8913
Authors: 1
1
1
Institutions: 1Universidade Federal do Parana, Centro de Estudos do Mar, Pontal do Parana, Parana. Brasil
Year:
Season: Mar-Abr
Volumen: 56
Number: 2
Pages: 319-326
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract The present work aimed to evaluate the contamination of Escherichia coli in the surface waters and oysters from two cultivations of Guaratuba Bay and to analyze the correlation patterns among the concentrations of E. coli in the waters and in the oysters with the local physical-chemical parameters. Samples were collected in the spring of 2007 and summer, autumn and winter of 2008 from two points of the bay (internal point and external point). From each cultivation and sampling period, 18 oysters were collected. The samples of surface water were collected for the measurement of physical-chemical parameters (pH, salinity, temperature, dissolved oxygen, seston, particulate organic matter) and quantification of E. coli. The surface water analyzed in the summer presented the largest most probable number of E. coli, (1,659.22 MPN.100 ml-1 and 958,55 MPN.100 ml-1 at external and internal points, respectively. The oysters from the internal point presented more E. coli, except in the winter sampling. The largest contamination was observed in the spring, at the internal point (979,78 MPN.g-1). The Principal Components Analysis showed direct correlation among the amount of E. coli in the oysters and in the surface water
Disciplines: Biología,
Medicina veterinaria y zootecnia
Keyword: Moluscos,
Zootecnia,
Microbiología,
Cultivo de ostras,
Contaminación microbiana,
Aguas superficiales,
Escherichia coli
Keyword: Biology,
Veterinary medicine and animal husbandry,
Molluscs,
Animal husbandry,
Microbiology,
Oyster culture,
Microbial pollution,
Surface waters,
Escherichia coli
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