Naturally acidified habitat selects for ocean acidification-tolerant mussels. ...

• Main Authors: Thomsen, Jörn, Stapp, Laura, Haynert, Kristin, Schade, Hanna, Danelli, Maria, Lannig, Gisela, Wegner, K Mathias, Melzner, Frank
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2017
• Subjects: Biological Impacts of Ocean Acidification BIOACID; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.877947; https://doi.pangaea.de/10.1594/PANGAEA.877947

Ocean acidification severely affects bivalves, especially their larval stages. Consequently, the fate of this ecologically and economically important group depends on the capacity and rate of evolutionary adaptation to altered ocean carbonate chemistry. We document successful settlement of wild mussel larvae (Mytilus edulis) in a periodically CO2-enriched habitat. The larval fitness of the population originating from the CO2-enriched habitat was compared to the response of a population from a nonenriched habitat in a common garden experiment. The high CO2-adapted population showed higher fitness under elevated Pco2 (partial pressure of CO2) than the non-adapted cohort, demonstrating, for the first time, an evolutionary response of a natural mussel population to ocean acidification. To assess the rate of adaptation, we performed a selection experiment over three generations. CO2 tolerance differed substantially between the families within the F1 generation, and survival was drastically decreased in the ... : Supplement to: Thomsen, Jörn; Stapp, Laura; Haynert, Kristin; Schade, Hanna; Danelli, Maria; Lannig, Gisela; Wegner, K Mathias; Melzner, Frank (2017): Naturally acidified habitat selects for ocean acidification-tolerant mussels. Science Advances, 3(4), e1602411 ...