Influence of water temperature and salinity on seasonal occurrences of Vibrio cholerae and enteric bacteria in oyster-producing areas of Veracruz, México

• Published in: Marine pollution bulletin Vol. 50; no. 12; pp. 1641 - 1648
• Main Authors: del Refugio Castañeda Chávez, Maria, Sedas, Violeta Pardio, Orrantia Borunda, Erasmo, Reynoso, Fabiola Lango
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-12-2005; Elsevier
• Subjects: Air. Soil. Water. Waste. Feeding; Animal productions; Animals; Applied sciences; Biological and medical sciences; Cross-Sectional Studies; Earth sciences; Earth, ocean, space; Engineering and environment geology. Geothermics; Enteric bacterias; Enterobacteriaceae - isolation & purification; Environment. Living conditions; Escherichia coli; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Invertebrates; Medical sciences; Mexico; Mollusca; Natural water pollution; Ostreidae; Ostreidae - microbiology; Oyster; Pollution; Pollution, environment geology; Public health. Hygiene; Public health. Hygiene-occupational medicine; Salinity; Salmonella - isolation & purification; Seasons; Seawater - chemistry; Seawater - microbiology; Seawaters, estuaries; Sodium Chloride - analysis; Temperature; Terrestrial animal productions; Vibrio alginolyticus; Vibrio cholera; Vibrio cholerae; Vibrio cholerae - isolation & purification; Water; Water Microbiology; Water Pollutants - analysis; Water treatment and pollution; Mexico; Mexico, Veracruz, Alvarado Lagoon; ASW, Mexico, Veracruz, Alvarado Lagoon; Mexico, Veracruz, La Mancha Lagoon; ASW, Mexico, Veracruz, La Mancha Lagoon; Water; Vibrio cholera; Temperature; Enteric bacterias; Oyster; Salinity; Brackish water environment; Salmonella; Microbiology; Oyster farming; Escherichia coli; Vibrio cholerae; Temperature effect; Environmental factor; Coastal zone; Health and environment; Bivalvia; Seasonal variation; Pathogenic; Bacteria; Waste water discharge; Biological contamination; Public health; Enterobacteriaceae; Anthropogenic factor; Oyster: Temperature; Brackish water; Coastal lagoon; Toxin; Crassostrea virginica; Water quality; Enterotoxin; Pollution source inventory; Vibrionaceae; Water pollution; Vibrio alginolyticus; Invertebrata; Mollusca; Biological accumulation; Aquaculture; Concentration distribution
• ISSN: 0025-326X; 1879-3363
• DOI: 10.1016/j.marpolbul.2005.06.036

The influence of temperature and salinity on the occurrence of
Vibrio cholerae,
Escherichia coli and
Salmonella spp. associated with water and oyster samples was investigated in two lagoons on the Atlantic Coast of Veracruz, Mexico over a 1-year period. The results indicated that seasonal salinity variability and warm temperatures, as well as nutrient influx, may influence the occurrence of
V. cholera. non-O1 and O1. The conditions found in the Alvarado (31.12
°C, 6.27‰, pH
=
8.74) and La Mancha lagoons (31.38
°C, 24.18‰, pH
=
9.15) during the rainy season 2002 favored the occurrence of
V. cholera O1 Inaba enterotoxin positive traced in oysters.
Vibrio alginolyticus was detected in Alvarado lagoon water samples during the winter season.
E. coli and
Salmonella spp. were isolated from water samples from the La Mancha (90–96.7% and 86.7–96.7%) and Alvarado (88.6–97.1% and 88.6–100%) lagoons. Occurrence of bacteria may be due to effluents from urban, agricultural and industrial areas.