The short and long-term implications of warming and increased sea water pCO2 on the physiological response of a temperate neogastropod species

Abstract Global average temperatures and seawater pCO 2 have rapidly increased due to the oceanic uptake of atmospheric carbon dioxide producing severe consequences for a broad range species. The impacts on marine ectotherms been largely reported at short-term scales (i.e. from days weeks); however, prolonged effects long-term processes such as reproduction received little attention. gastropod Ocenebra erinaceus is key predator structuring communities rocky shores French UK coasts. Even though shore species are regarded being very tolerant changes in temperature pH, many them living near their upper tolerance limits, making susceptible rapid environmental changes. Here, we report that future mean conditions (RCP8.5, + 3 °C ~ 900 μatm CO ) do not significantly affect physiology molecular response O. adults after 132 days. During first 50 days, there was slight impact oxygen consumption rates body weight; 95 exposure, gastropods fully acclimated experimental condition. Despite this, females exposed these ceased exposure (~ 10 months). Therefore, short-term, appear be capable full compensation; long-term, they fail invest reproduction. We conclude studies should based combined results both short- effects, present realistic projections ecological climate warming.