The majority of Vibrio illnesses arise from seafood consumption, but 12–28% of cases result from direct contact with seawater (Ralston et al., 2011). Incidences of shellfish and water contamination by bacterial pathogens of the genus Vibrio and by harmful algal blooms (HABs) caused by a variety of species have increased over several decades (Baker‐Austin et al., 2013 Glibert et al., 2005 Hallegraeff, 1993 Heisler et al., 2008 Lewitus et al., 2012 McLean & Sinclair, 2012 Newton et al., 2012 Van Dolah, 2000).
9 SUMMER ISLANDS LANE KIAWAH KIRE SERIES
While more research involving longer time series is needed to increase robustness, findings herein suggest that certain HAB species may augment Vibrio occurrences during warmer months. Vibrio concentrations were positively and significantly associated with temperature and dissolved organic matter, dinoflagellate blooms, negatively and significantly associated with suspended solids, but not significantly correlated with chlorophyll or nitrogen. parahaemolyticus, respectively, and three during cooler months (December 2008 through February 2009) caused by dinoflagellates and euglenophytes that were not associated with marked changes in Vibrio abundances. Five blooms occurred during the study (2008–2009): two during relatively warmer months (an August 2008 cyanobacteria bloom and a November 2008 dinoflagellate bloom) followed by increases in both Vibrio species and V. parahaemolyticus in South Carolina coastal stormwater detention ponds, managed systems where HABs often proliferate, and their receiving tidal creek waters.
This study examined various physical, nutrient, and temporal factors associated with incidences of HABs, V. Few have considered the two simultaneously, though emerging evidence suggests that algal blooms enhance Vibrio growth and survival. Numerous studies have tried to identify environmental factors driving HABs and pathogenic Vibrio populations separately.
Incidences of harmful algal blooms (HABs) and Vibrio infections have increased over recent decades.
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