Ocean acidification disrupts induced defences in the intertidal gastropod Littorina littorea
Ocean acidification disrupts induced defences in the intertidal gastropod Littorina littorea
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DOI：
10.1098/rsbl.2007.0457
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发表时间：
2007-12-22
期刊：
影响因子：
3.3
通讯作者：
Spicer, John
中科院分区：
文献类型：
--
作者：
Bibby, Ruth;Cleall-Harding, Polly;Spicer, John
据预测，二氧化碳引起的海洋酸化将对海洋生物产生重大影响，但迄今为止的研究重点一直是直接影响。我们表明，酸化海水可以通过破坏生物体表达诱导防御的能力来产生间接的生物效应，从而增加它们对捕食的脆弱性。潮间带腹足类Littorina littorea在捕食（螃蟹）线索的存在下产生较厚的贝壳，但这种反应在低海水pH下被破坏。这种反应伴随着代谢率的显著降低然而，在这种处理中的蜗牛显然通过增加它们的回避行为来补偿缺乏形态防御，进而影响它们与其他生物的相互作用。总之，这些发现表明，海洋酸化的生物影响可能是复杂的，超出了简单的直接影响。
Carbon dioxide-induced ocean acidification is predicted to have major implications for marine life, but the research focus to date has been on direct effects. We demonstrate that acidified seawater can have indirect biological effects by disrupting the capability of organisms to express induced defences, hence, increasing their vulnerability to predation. The intertidal gastropod Littorina littorea produced thicker shells in the presence of predation (crab) cues but this response was disrupted at low seawater pH. This response was accompanied by a marked depression in metabolic rate (hypometabolism) under the joint stress of high predation risk and reduced pH. However, snails in this treatment apparently compensated for a lack of morphological defence, by increasing their avoidance behaviour, which, in turn, could affect their interactions with other organisms. Together, these findings suggest that biological effects from ocean acidification may be complex and extend beyond simple direct effects.