The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia; The Sydney Institute of Marine Science, Mosman, New South Wales 2088, Australia.
The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia; The University of New South Wales, School of Biological, Earth and Environmental Sciences, Kensington, New South Wales 2052, Australia.
Mar Pollut Bull. 2021 Jul;168:112441. doi: 10.1016/j.marpolbul.2021.112441. Epub 2021 May 12.
Climate change will increase energetic demands on marine invertebrate larvae and make planktonic food more unpredictable. This study determined the impact of ocean acidification on larval energetics of the oysters Saccostrea glomerata and Crassostrea gigas. Larvae of both oysters were reared until the 9-day-old, umbonate stage under orthogonal combinations of ambient and elevated p CO (340 and 856 μatm) and food was limited. Elevated p CO reduced the survival, size and larval energetics, larvae of C. gigas being more resilient than S. glomerata. When larvae were fed, elevated p CO reduced lipid levels across all lipid classes. When larvae were unfed elevated p CO resulted in increased lipid levels and mortality. Ocean acidification and food will interact to limit larval energetics. Larvae of S. glomerata will be more impacted than C. gigas and this is of concern given their aquacultural status and ecological function.
气候变化将增加海洋无脊椎动物幼虫的能量需求，并使浮游生物的食物更加不可预测。本研究确定了海洋酸化对牡蛎 Saccostrea glomerata 和巨牡蛎 Crassostrea gigas 幼虫能量学的影响。在环境和升高的 pCO2（340 和 856 μatm）的正交组合下，将两种牡蛎的幼虫饲养至 9 天大、耳状期，并限制食物供应。升高的 pCO2 降低了存活率、大小和幼虫的能量学，C. gigas 的幼虫比 S. glomerata 的幼虫更有弹性。当幼虫进食时，升高的 pCO2 降低了所有脂质类别的脂质水平。当幼虫不进食时，升高的 pCO2 会导致脂质水平升高和死亡率增加。海洋酸化和食物将相互作用，限制幼虫的能量学。S. glomerata 的幼虫将比 C. gigas 受到更大的影响，考虑到它们的水产养殖地位和生态功能，这令人担忧。
