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Influence of water temperature and salinity on Vibrio vulnificus in northern Gulf and Atlantic Coast oysters (Crassostrea virginica)

Motes, M.L. (U.S. Food and Drug Administration, Dauphin Island, AL.) ; Depaola, A ; Cook, D.W ; Veazey, J.E ; Hunsucker, J.C ; Garthright, W.E ; Blodgett, R.J ; Chirtel, S.J

Applied and environmental microbiology, 1998-04, Vol.64 (4), p.1459-1465 [Periódico revisado por pares]

Washington, DC: American Society for Microbiology

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Título:
Influence of water temperature and salinity on Vibrio vulnificus in northern Gulf and Atlantic Coast oysters (Crassostrea virginica)
Autor: Motes, M.L. (U.S. Food and Drug Administration, Dauphin Island, AL.) ; Depaola, A ; Cook, D.W ; Veazey, J.E ; Hunsucker, J.C ; Garthright, W.E ; Blodgett, R.J ; Chirtel, S.J
Assuntos: Animals ; Biological and medical sciences ; BIOLOGICAL CONTAMINATION ; Colony Count, Microbial ; CONTAMINACION BIOLOGICA ; CONTAMINATION BIOLOGIQUE ; CRASSOSTREA VIRGINICA ; Environmental and Public Health Microbiology ; Fish and seafood industries ; FLORIDA ; FLORIDE ; Food industries ; Foodborne Diseases - etiology ; Fundamental and applied biological sciences. Psychology ; Humans ; Infections ; LOUISIANA ; LOUISIANE ; LUISIANA ; Marine ; MICROBIAL CONTAMINATION ; Ostreidae - microbiology ; Oysters ; Salt ; Seasons ; Shellfish - microbiology ; Sodium Chloride - analysis ; Southeastern United States ; TEMPERATURA DEL AGUA ; Temperature ; TEMPERATURE DE L'EAU ; Vibrio - isolation & purification ; Vibrio - pathogenicity ; Vibrio Infections - etiology ; VIBRIO VULNIFICUS ; Water Microbiology ; WATER TEMPERATURE
É parte de: Applied and environmental microbiology, 1998-04, Vol.64 (4), p.1459-1465
Notas: 1997089920
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Corresponding author. Mailing address: Gulf Coast Seafood Laboratory, Dauphin Island, AL 36528-0158. Phone: (334) 694-4480. Fax: (334) 694-4477. E-mail: DWC@vm.cfsan.fda.gov.
Descrição: This study investigated the temperature and salinity parameters associated with waters and oysters linked to food-borne Vibrio vulnificus infections. V. vulnificus was enumerated in oysters collected at three northern Gulf Coast sites and two Atlantic Coast sites from July 1994 through September 1995. Two of these sites, Black Bay, La., and Apalachicola Bay, Fla., are the source of the majority of the oysters implicated in V. vulnificus cases. Oysters in all Gulf Coast sites exhibited a similar seasonal distribution of V. vulnificus: a consistently large number (median concentration, 2,300 organisms [most probable number] per g of oyster meat) from May through October followed by a gradual reduction during November and December to less than or equal to 10 per g, where it remained from January through mid-March, and a sharp increase in late March and April to summer levels. V. vulnificus was undetectable (3 per g) in oysters from the North and South Carolina sites for most of the year. An exception occurred when a late-summer flood caused a drop in salinity in the North Carolina estuary, apparently causing V. vulnificus numbers to increase briefly to Gulf Coast levels. At Gulf Coast sites, V. vulnificus numbers increased with water temperatures up to 26 degrees C and were constant at higher temperatures. High V. vulnificus levels (10(3) per g) were typically found in oysters from intermediate salinities (5 to 25 ppt). Smaller V. vulnificus numbers (10(2) per g) were found at salinities above 28 ppt, typical of Atlantic Coast sites. On 11 occasions oysters were sampled at times and locations near the source of oysters implicated in 13 V. vulnificus cases; the V. vulnificus levels and environmental parameters associated with these samples were consistent with those of other study samples collected from the Gulf Coast from April through November.
Editor: Washington, DC: American Society for Microbiology
Idioma: Inglês

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Influence of water temperature and salinity on Vibrio vulnificus in northern Gulf and Atlantic Coast oysters (Crassostrea virginica)

Motes, M.L. (U.S. Food and Drug Administration, Dauphin Island, AL.) ; Depaola, A ; Cook, D.W ; Veazey, J.E ; Hunsucker, J.C ; Garthright, W.E ; Blodgett, R.J ; Chirtel, S.J

Washington, DC: American Society for Microbiology

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