Elevated CO2 Enhances Otolith Growth in Young Fish
Elevated CO2 Enhances Otolith Growth in Young Fish
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DOI：
10.1126/science.1169806
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发表时间：
2009-06-26
期刊：
影响因子：
56.9
通讯作者：
Asch, Rebecca
中科院分区：
文献类型：
--
作者：
Checkley, David M., Jr.;Dickson, Andrew G.;Asch, Rebecca
人类活动排放到大气中的二氧化碳很大一部分进入海洋，导致海洋酸化。我们发现，在高 CO2（低 pH）条件下生长的幼鱼的耳石（文石耳骨）比正常情况下要大，这与预期相反。我们假设，CO2 可以自由地穿过幼鱼耳石周围的上皮细胞，在控制局部 pH 值的同时加速耳石的生长。这与结构生物矿物质通常报道的效果相反。
A large fraction of the carbon dioxide added to the atmosphere by human activity enters the sea, causing ocean acidification. We show that otoliths (aragonite ear bones) of young fish grown under high CO2(low pH) conditions are larger than normal, contrary to expectation. We hypothesize that CO2moves freely through the epithelium around the otoliths in young fish, accelerating otolith growth while the local pH is controlled. This is the converse of the effect commonly reported for structural biominerals.