Elevated temperature and CO2 have positive effects on the growth and survival of larval Australasian snapper

摘要: Abstract Rising water temperature and increased uptake of CO2 by the ocean are predicted to have widespread impacts on marine species. However, effects likely vary, depending a species’ sensitivity geographical location population. Here, we investigated potential elevated pCO2 larval growth survival in New Zealand population Australasian snapper, Chrysophyrs auratus. Eggs larvae were reared fully cross-factored experiment (18 °C 22 °C/pCO2 440 1040 μatm) 16 days post hatch (dph). Morphologies at 1 dph significantly affected temperature, but not CO2. At 1dph, 22 °C longer (7%) had larger muscle depth vent (14%), reduced yolk (65%) oil globule size (16%). Reduced reserves recently hatched suggests higher metabolic demands warmer water. dph, (12%) was (64%). Conversely, primarily rather than temperature. Survivorship 24% 54% higher, respectively, under compared with ambient conditions. Elevated (24%) dph. These results suggest that projected climate change scenarios may an overall positive effect early life history this C. This could benefit recruitment success, needs be weighed against negative rates swimming performance observed other studies same