Species of Vibrio can persist in blue mussels, especially when they are present in high numbers as a result of a large uptake from the aquatic environment. This study investigated the uptake, localization, and persistence of three Vibrio species relevant to human health in blue mussels (Mytilus edulis) after artificial contamination. Mussels M. edulis were kept in tanks of artificial seawater spiked with Vibrio spp. to monitor bioaccumulation of these bacteria in corresponding bivalves. Bacteria accumulated rapidly in the bivalves, reaching high concentrations after 1.5 h. The highest Vibrio sp. counts were detected in the digestive glands, with 6.9 × 108 cfu/g for Vibrio parahaemolyticus, 1.5 × 107 cfu/g for Vibrio cholerae, and 2.2 × 107 cfu/g for Vibrio vulnificus. Among bivalve compartments, the digestive glands showed the fastest enrichment of Vibrio and maintained the highest Vibrio numbers throughout the examination period. After transfer to a tank containing filtered, sterile seawater, the Vibrio load in bivalves showed a continuous reduction. However, even after 7 days of depuration, an average concentration of approximately 103 cfu/g remained in the digestive glands of M. edulis. In clearance assays, a general clearance rate of 0.02 log cfu/g/h was calculated for all three strains. For the first time, in vivo accumulation counts and clearance kinetics of Vibrio within mussel compartments are shown, highlighting a strong concentration of Vibrio in the digestive glands whereas other tissues continued to accumulate significantly less Vibrio.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 32 • No. 3