Investigation of escape response of Norwegian Pecten maximus ...

• Main Authors: Schalkhausser, Burgel, Bock, Christian, Stemmer, Kristina, Brey, Thomas, Pörtner, Hans-Otto, Lannig, Gisela
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2013
• Subjects: Biological Impacts of Ocean Acidification BIOACID; Norway; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.789255; https://doi.pangaea.de/10.1594/PANGAEA.789255

The ongoing process of ocean acidification already affects marine life and, according to the concept of oxygen- and capacity limitation of thermal tolerance (OCLTT), these effects may be exacerbated at the boarders of the thermal tolerance window. We studied the effects of elevated CO2 concentrations on clapping performance and energy metabolism of the commercially important scallop Pecten maximus. Individuals were exposed for at least 30 days to 4°C (winter) or to 10°C (spring/summer) at either ambient (0.04 kPa, normocapnia) or predicted future PCO2 levels (0.11 kPa, hypercapnia). Cold (4°C) exposed groups revealed thermal stress exacerbated by PCO2 indicated by a high mortality overall and its increase from 55% under normocapnia to 90% under hypercapnia. We therefore excluded the 4°C groups from further experimentation. Scallops at 10°C showed impaired clapping performance following hypercapnic exposure. Force production was significantly reduced although the number of claps was unchanged between normo- ... : Supplement to: Schalkhausser, Burgel; Bock, Christian; Stemmer, Kristina; Brey, Thomas; Pörtner, Hans-Otto; Lannig, Gisela (2013): Impact of ocean acidification on escape performance of the king scallop, Pecten maximus, from Norway. Marine Biology, 160(8), 1995-2006 ...