Putting prey and predator into the CO2 equation - qualitative and quantitative effects of ocean acidification on predator-prey interactions
Putting prey and predator into the CO2 equation - qualitative and quantitative effects of ocean acidification on predator-prey interactions
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DOI：
10.1111/j.1461-0248.2011.01683.x
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发表时间：
2011-11-01
期刊：
影响因子：
8.8
通讯作者：
Chivers, Douglas P.
中科院分区：
文献类型：
--
作者：
Ferrari, Maud C. O.;McCormick, Mark I.;Chivers, Douglas P.
关于海洋酸化对捕食者猎物动态的影响知之甚少。在此，我们通过让一条掠食性礁鱼与来自四种同属物种的八只小型或大型幼年雀鲷互动 24 小时，研究了二氧化碳 (CO2) 对猎物和捕食者的影响。猎物和捕食者都暴露在控制或升高水平的二氧化碳中。比较了二氧化碳处理、猎物大小和物种的死亡率和捕食者选择性。所有物种的小型幼体在高二氧化碳浓度下都会有较高的死亡率，而大型新成员则没有受到影响。对于大型猎物，捕食者对猎物的选择性模式在二氧化碳浓度升高的情况下发生了逆转。我们的结果表明，二氧化碳分别对小型和大型雀鲷新兵产生定量和定性的消耗影响，这是由于二氧化碳引起的行为变化可能是由神经功能受损介导的。这项研究强调了预测气候变化对珊瑚礁生态系统影响的复杂性。
Little is known about the impact of ocean acidification on predator prey dynamics. Herein, we examined the effect of carbon dioxide (CO2) on both prey and predator by letting one predatory reef fish interact for 24 h with eight small or large juvenile damselfishes from four congeneric species. Both prey and predator were exposed to control or elevated levels of CO2. Mortality rate and predator selectivity were compared across CO2 treatments, prey size and species. Small juveniles of all species sustained greater mortality at high CO2 levels, while large recruits were not affected. For large prey, the pattern of prey selectivity by predators was reversed under elevated CO2. Our results demonstrate both quantitative and qualitative consumptive effects of CO2 on small and larger damselfish recruits respectively, resulting from CO2-induced behavioural changes likely mediated by impaired neurological function. This study highlights the complexity of predicting the effects of climate change on coral reef ecosystems.