Salinity tolerance of the invasive Pacific oyster (Megallana gigas) at Biologisk Institut - Københavns Universitet

The aim of the project is to study the physiology of the Pacific oysters exposed to decreasing salinities in order to identify the lower salinity threshold. Thereby, the border of possible invasions into the Baltic Sea can be evaluated. The project is done by slowly adapting the oyster to lowered salinities followed by measurements of the oxygen consumption of resting and not feed oysters (standard metabolic rate, SMR) followed by measurements of the oxygen consumption of oysters feeding at their maximal rate (active metabolic rate, AMR). In addition, the clearance rate will be measured and the tissue water content used as proxy for osmotic stress. Based on the measurements it can be evaluated how well the oyster performs at different salinities.

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