Species-specific effects of near-future CO(2) on the respiratory performance of two tropical prey fish and their predator.
Species-specific effects of near-future CO(2) on the respiratory performance of two tropical prey fish and their predator.
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DOI：
10.1016/j.cbpa.2013.07.025
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发表时间：
2013-11
影响因子：
2.3
通讯作者：
Nilsson, Goran E.
中科院分区：
文献类型：
--
作者：
Couturier, Christine S.;Stecyk, Jonathan A. W.;Rummer, Jodie L.;Munday, Philip L.;Nilsson, Goran E.
海洋表面CO2浓度随着大气CO2浓度的上升而增加，到2100年可能超过900 μatm，一些沿海栖息地的极端值超过2000 μatm。预计海洋二氧化碳分压即将增加将对海洋鱼类产生负面影响，包括有氧性能降低，但物种之间的差异是可以预料的。了解对海洋酸化的种间反应对于预测海洋酸化对群落和生态系统的影响非常重要。本研究测定了近未来海水CO2 （860 μatm）暴露对三种通过捕食者-食饵关系相互联系的热带珊瑚礁鱼幼鱼Pomacentrus moluccensis和P. amboinensis及其捕食者之一Pseudochromis fuscus成鱼的静息（Ṁ O2rest）和最大耗氧量（Ṁ O2max）的影响。与预测相反，其中一种被捕食物种P. amboinensis在急性和四天的二氧化碳海水暴露后，Ṁ O2max增加了28 - 39%，同时保持Ṁ O2rest。相比之下，相同处理对其他两种的Ṁ O2rest和Ṁ O2max没有显著影响。然而，急性暴露于1400和2400 μatm CO2时，Ṁ O2max恢复到对照值。总体而言，研究结果表明：(1)在近未来CO2海水环境中生活的代谢成本对静止状态下被研究的物种来说是微不足道的；(2)热带珊瑚礁物种对近未来CO2海水的ṀO2max响应可能取决于外部高碳酸血症的严重程度；(3)近未来海洋二氧化碳分压可能不会对所有鱼类的需氧范围造成损害，甚至可能增加某些物种的需氧范围。目前的研究结果还强调，相近的系统发育亲缘关系和生活在相同的环境中，并不一定意味着对未来二氧化碳的相似生理反应。
Ocean surface CO2 levels are increasing in line with rising atmospheric CO2 and could exceed 900 μatm by year 2100, with extremes above 2000 μatm in some coastal habitats. The imminent increase in ocean pCO2 is predicted to have negative consequences for marine fishes, including reduced aerobic performance, but variability among species could be expected. Understanding interspecific responses to ocean acidification is important for predicting the consequences of ocean acidification on communities and ecosystems. In the present study, the effects of exposure to near-future seawater CO2 (860 μatm) on resting (Ṁ O2rest) and maximum (Ṁ O2max) oxygen consumption rates were determined for three tropical coral reef fish species interlinked through predator-prey relationships: juvenile Pomacentrus moluccensis and P. amboinensis, and one of their predators: adult Pseudochromis fuscus. Contrary to predictions, one of the prey species, P. amboinensis, displayed a 28 – 39 % increase in Ṁ O2max after both an acute and four-day exposure to near-future CO2 seawater, while maintaining Ṁ O2rest. By contrast, the same treatment had no significant effects on Ṁ O2rest or Ṁ O2max of the other two species. However, acute exposure of P. amboinensis to 1400 and 2400 μatm CO2 resulted in Ṁ O2max returning to control values. Overall, the findings suggest that: (1) the metabolic costs of living in a near-future CO2 seawater environment were insignificant for the species examined at rest; (2) the ṀO2max response of tropical reef species to near-future CO2 seawater can be dependent on the severity of external hypercapnia; and (3) near-future ocean pCO2 may not be detrimental to aerobic scope of all fish species and it may even augment aerobic scope of some species. The present results also highlight that close phylogenetic relatedness and living in the same environment, does not necessarily imply similar physiological responses to near-future CO2.
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影响因子：
3.7
作者：
Gardiner NM;Munday PL;Nilsson GE
通讯作者：
Nilsson GE
影响因子：
3.7
作者：
Cripps IL;Munday PL;McCormick MI
通讯作者：
McCormick MI
DOI：
10.1016/j.cbpa.2011.09.002
发表时间：
2012-01-01
影响因子：
2.3
作者：
Baker, Daniel W.;Brauner, Colin J.
通讯作者：
Brauner, Colin J.
影响因子：
11.6
作者：
Ferrari, Maud C. O.;Dixson, Danielle L.;Chivers, Douglas P.
通讯作者：
Chivers, Douglas P.
DOI：
10.1016/s1546-5098(06)25003-9
发表时间：
2007-01-01
期刊：
SENSORY SYSTEMS NEUROSCIENCE
影响因子：
--
作者：
Gilmour, Kathleen M.;Perry, Steve F.
通讯作者：
Perry, Steve F.