当前位置: X-MOL 学术Mar. Biol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Long-term effects of high CO2 on growth and survival of juveniles of the striped venus clam Chamelea gallina: implications of seawater carbonate chemistry
Marine Biology ( IF 2.4 ) Pub Date : 2021-07-08 , DOI: 10.1007/s00227-021-03931-x
Laura Sordo 1, 2 , Catarina Duarte 1 , Sandra Joaquim 1, 3 , Miguel B. Gaspar 1, 2 , Domitília Matias 1, 3
Affiliation  

Ocean acidification (OA) will decrease shellfish growth and survival, with ecological and economic consequences for fisheries and aquaculture. However, the high variability of results among experiments, and the lack of long-term studies, make it difficult to predict the effect that OA will have on bivalve species. We tested the long-term effect of high CO2 on growth, calcification rates, and survival of juveniles of the commercial bivalve species Chamelea gallina from Southern Portugal. The local high alkalinity of seawater probably buffered the negative effect of the pH drop, and after 75 days juveniles increased their growth and calcification rates with CO2. However, after 217 days, the situation reversed, bivalves under control conditions had the highest growth and calcification rates, while individuals under high CO2 presented negative calcification rates. The biometric variable that responded first was the width of the individuals, followed by the height and length of the shells. Survival was unaffected except for a mortality peak of juveniles under control and intermediate conditions as a consequence of a temperature drop. In the short term, C. gallina will increase their calcification rates to compensate for OA. However, in the long term, the additional energy expended will be translated into growth losses with negative repercussions for the fisheries and aquaculture. The cultivation of shellfish on high alkaline seawater should be further explored as a bioremediation measure to mitigate the negative effect of OA on shellfish aquaculture.



中文翻译:

高二氧化碳对条纹金星蛤 Chamelea gallina 幼体生长和存活的长期影响:海水碳酸盐化学的影响

海洋酸化 (OA) 将减少贝类的生长和存活,对渔业和水产养殖产生生态和经济影响。然而,实验结果的高度可变性以及缺乏长期研究,使得很难预测 OA 对双壳类物种的影响。我们测试了高 CO 2对来自葡萄牙南部的商业双壳类物种Chamelea gallina幼体的生长、钙化率和存活率的长期影响。当地海水的高碱度可能缓冲了 pH 值下降的负面影响,75 天后幼鱼的生长和钙化率增加了 CO 2. 然而,在 217 天后,情况发生了逆转,对照条件下的双壳类动物的生长和钙化率最高,而高 CO 2下的个体则呈现出负的钙化率。首先响应的生物特征变量是个体的宽度,其次是贝壳的高度和长度。除了由于温度下降导致处于控制和中间条件下的幼鱼出现死亡率高峰外,存活率不受影响。在短期内,C. gallina将增加他们的钙化率以补偿 OA。然而,从长远来看,额外消耗的能源将转化为增长损失,对渔业和水产养殖产生负面影响。应进一步探索在高碱性海水中养殖贝类作为一种生物修复措施,以减轻 OA 对贝类养殖的负面影响。

更新日期:2021-07-08
down
wechat
bug