Intraspecific variations in responses to ocean acidification in two branching coral species
Intraspecific variations in responses to ocean acidification in two branching coral species
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两种分支珊瑚物种对海洋酸化反应的种内差异
DOI：
10.1016/j.marpolbul.2017.06.061
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发表时间：
2017
影响因子：
5.8
通讯作者：
Y.
中科院分区：
文献类型：
--
作者：
Sekizawa;A.;Uechi;H.;Iguchi;A.;Nakamura;T.;Kumagai;N. H.;Suzuki;A.;Sakai;K.;Nojiri;Y.
海洋酸化被广泛认为通过减少钙化对海洋钙化生物产生负面影响，但关于这些生物是否可以在一系列表型可塑性内科普海洋酸化和/或适应未来酸化的海洋仍然存在争议。我们进行了一个实验室饲养实验，使用克隆片段的常见分支珊瑚Montipora digitata和Poritescylindrica在控制和酸化海水（较低的pH值）条件下（约400和900 μ atmpCO 2，分别），并评估种内变化，其响应海洋酸化。钙化和光合效率的种内和种间变化是明显的，根据bothpCO 2条件和殖民地，表明酸化的反应可能是个别变量在殖民地水平。我们的研究结果表明，一些珊瑚可能会科普海洋酸化在其目前的基因型组成的适应通过表型可塑性，而其他人可能会被置于选择压力下，导致人口变化。
Ocean acidification is widely recognised to have a negative impact on marine calcifying organisms by reducing calcifications, but controversy remains over whether such organisms could cope with ocean acidification within a range of phenotypic plasticity and/or adapt to future acidifying ocean. We performed a laboratory rearing experiment using clonal fragments of the common branching coralsMontipora digitataandPoritescylindricaunder control and acidified seawater (lower pH) conditions (approximately 400 and 900 μatmpCO2, respectively) and evaluated the intraspecific variations in their responses to ocean acidification. Intra- and interspecific variations in calcification and photosynthetic efficiency were evident according to bothpCO2conditions and colony, indicating that responses to acidification may be individually variable at the colony level. Our results suggest that some corals may cope with ocean acidification within their present genotypic composition by adaptation through phenotypic plasticity, while others may be placed under selective pressures resulting in population alteration.