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首页> 外文期刊>Marine biology >Long-term effects of high CO_2 on growth and survival of juveniles of the striped venus clam Chamelea gallina: implications of seawater carbonate chemistry
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Long-term effects of high CO_2 on growth and survival of juveniles of the striped venus clam Chamelea gallina: implications of seawater carbonate chemistry

机译：高CO_2对条纹金星Chamelea Gallina的幼年生生长和存活的长期影响：海水碳酸盐化学的影响

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摘要

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.
机译：海洋酸化（OA）将减少贝类生长和生存，对渔业和水产养殖的生态和经济后果。然而，实验中的结果和缺乏长期研究的结果高度变化，使得难以预测OA对双抗体物种的影响。我们测试了高二氧化碳的长期效果对来自葡萄牙南部的商业双子族甘露菊属植物的青少年的生长，钙化率和生存率。海水的局部高碱度可能缓冲了pH下降的负面影响，并且在75天后，幼虫增加了它们的生长和钙化率与CO2。但是，在217天后，逆转的情况，控制条件下的偏差具有最高的增长和钙化率，而在高二氧化碳下的个体呈现负钙化率。首先响应的生物识别变量是各个的宽度，然后是壳体的高度和长度。除了温度下降的后果，外部存活未受影响的少年死亡率，除了控制和中间条件下。在短期内，C. Gallina将增加他们的钙化率来弥补OA。但是，从长期来看，额外的能量将被转化为对渔业和水产养殖的负面影响的生长损失。应进一步探索高碱性海水上的贝类培养，以减轻OA对贝类水产养殖的负面影响。

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  • 来源
    《Marine biology》 |2021年第8期|123.1-123.14|共14页
  • 作者

    Sordo Laura; Duarte Catarina; Joaquim Sandra; Gaspar Miguel B.; Matias Domitilia;

  • 作者单位

    Portuguese Inst Sea & Atmosphere IPMA Lisbon Portugal|Ctr Marine Sci CCMAR Faro Portugal;

    Portuguese Inst Sea & Atmosphere IPMA Lisbon Portugal;

    Portuguese Inst Sea & Atmosphere IPMA Lisbon Portugal|Univ Porto Interdisciplinary Ctr Marine & Environm Res CIIMAR Porto Portugal;

    Portuguese Inst Sea & Atmosphere IPMA Lisbon Portugal|Ctr Marine Sci CCMAR Faro Portugal;

    Portuguese Inst Sea & Atmosphere IPMA Lisbon Portugal|Univ Porto Interdisciplinary Ctr Marine & Environm Res CIIMAR Porto Portugal;

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