Table 1.

V. vulnificus counts in oysters and environmental conditions of harvest waters by location and period

Location and periodaNo. of samplesV. vulnificus counts (MPN/g)Water temp (°C)Water salinity (ppt)
RangeLog mean (SD)bRangeMean (SD)RangeMean (SD)
Alabama
 Cold8<0.3–0.9−0.52 (0.29)12.6–16.614.7 (1.9)5–1811.5 (6.5)
 Transitional28<0.3–43,0001.99 (1.26)14.6–23.820.5 (3.0)4–2113.5 (4.8)
 Warm6821–43,0003.26 (0.62)22.7–32.428.0 (2.3)5–2817.1 (5.6)
 All104<0.3–43,0002.62 (1.36)12.6–32.425.0 (5.1)4–2815.7 (5.7)
Florida
 Cold8<0.3–2.3−0.40 (0.45)11.7–17.314.7 (2.8)11.9–26.819.1 (6.6)
 Transitional26<0.3–9,3001.72 (1.18)13.4–23.819.9 (3.2)7.5–30.822.7 (7.0)
 Warm607.2–9,3003.03 (0.67)21.8–32.027.5 (2.4)7.6–30.919.7 (6.8)
 All94<0.3–9,3002.37 (1.33)11.7–32.024.2 (5.2)7.5–30.920.5 (6.8)
Louisiana
 Cold8<0.3–9.30.08 (0.52)10.8–16.813.9 (3.1)7.2–15.411.5 (3.5)
 Transitional249.3–4,3002.34 (0.80)12.7–23.519.4 (3.9)8.5–17.412.6 (3.0)
 Warm68120–15,0003.38 (0.43)19.8–32.427.9 (2.6)5.7–21.613.0 (3.6)
 All100<0.3–15,0002.86 (1.08)10.8–32.424.8 (5.6)5.7–21.612.8 (3.4)
All Gulf Sites
 Cold24<0.3–9.3−0.30 (0.52)10.8–17.314.4 (2.4)5–26.814.0 (6.3)
 Transitional78<0.3–11,0002.00 (1.12)12.7–23.819.9 (3.3)4–30.816.3 (6.9)
 Warm1967.2–43,0003.20 (0.59)19.8–32.427.8 (2.4)5–30.916.5 (6.1)
 All298<0.3–43,0002.62 (1.27)10.8–32.424.7 (5.2)4–30.916.3 (6.3)
North Carolina
 Cold30<3–150.38 (0.33)6.7–21.716.1 (4.3)6–3424.0 (7.8)
 Warm48<3–9,3001.04 (0.89)21.7–35.628.1 (4.0)13–3727.9 (7.0)
 All78<3–9,3000.77 (0.79)6.7–35.623.3 (7.2)6–3726.4 (7.6)
South Carolina
 Cold30<3–230.23 (0.24)9.0–23.317.8 (4.5)5–3529.4 (7.2)
 Warm46<3–3.60.19 (0.08)21.0–32.027.2 (3.1)30–3733.9 (2.1)
 All76<3–230.22 (0.17)9.0–32.023.3 (5.9)5–3732.1 (5.3)
  • a Gulf Coast states: cold period, January through 15 March; transitional period, 16 through 31 March, April, November, and December; warm period (May through October). Atlantic Coast states: cold period, October through April; warm period, May through September.

  • b SD, standard deviation of the distribution of the data, not the standard error of the mean.