Publication Date:
2020-01-02
Description:
Blue mussels (Bivalvia) potentially accumulate Vibrio spp. and can transfer these pathogens into the consumer. Earlier studies dealt with the existence of V. parahaemolyticus in natural environments but no examinations under laboratory conditions exist on the influence of temperature onto accumulation and persistence in blue mussels under low salinity environments. The aim of this study was to design a reliable and practicable methodology to examine the presence of V. parahaemolyticus in blue mussels from the Baltic Sea and possibilities for decontamination. A static design was chosen, estimating the influence of temperature onto contamination and clearance kinetics. Blue mussels accumulated a similar amount of V. parahaemolyticus during 24 h with no significant difference at the chosen temperatures of 5, 10 and 20 °C. After transfer into clearance tanks, the numbers of bacteria decreased in all mussels for 72 h, but the amounts differed significantly between 5 °C to 10 °C and 10 °C to 20 °C. Highest reduction from initial 4.84x107 cfu/mg to 1.16x105 cfu/mg (72 h) was observed at 10 °C (about 0.2 % of initial value). The Baltic Sea offers opportunities for blue mussel production, especially in the context of Integrated Multi Trophic Aquaculture to reduce environmental impact of fish aquaculture. In the case of mussel infection, a clearance bath for 72 h under 10 °C can prevent possible transfer of V. parahaemolyticus into the consumer.
Type:
Article
,
PeerReviewed
Format:
text
DOI:
10.2376/0003-925X-68-106
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