Our Russian COOPENOR colleagues have started the experimental work at the White Sea Biological Station (Chupa Bay, Gulf of Kandalaksha, White Sea) of the Zoological Institute of the Russian Academy of Sciences. They investigate the effects of a siberian crude oil on sublittoral blue mussel Mytilus edulis and horse mussel Modiolus modiolus at different salinities (25 psu for both species and 15 psu for M. edulis).
The set-up is following the method of Frantzen et al. (2011), although the facilities are not allowing a flow-through system. Instead, the organisms are kept in plexiglas tanks (40 animals per tank) and the seawater is partly changed on a daily basis to mimick the continuous decrease in the concentration of the water soluble fraction over time as well as the composition change of the water soluble compounds (PAHs), which we would have obtained by using the oiled rock column system.
The group has long experience in measuring cardiac activity on bivalves and glued optical sensors (CNY-70) to the shells of the animals (photo) prior to the exposure start. In addition to cardiac activity registration, this experience will look into oxidative damage, antioxidants and hsp. This study will also provide some insights into the response of blue mussels to combined oil and salinity stresses.