Coral mass spawning predicted by rapid seasonal rise in ocean temperature
Coral mass spawning predicted by rapid seasonal rise in ocean temperature
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DOI：
10.1098/rspb.2016.0011
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发表时间：
2016-05-11
影响因子：
4.7
通讯作者：
Baird, Andrew H.
中科院分区：
文献类型：
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作者：
Keith, Sally A.;Maynard, Jeffrey A.;Baird, Andrew H.
珊瑚产卵时间与多种环境因素有关；然而，这些因素在多大程度上充当跨多个物种和大空间尺度的普遍线索尚不清楚。我们使用印度洋和太平洋 34 个珊瑚礁的珊瑚产卵的独特数据集来测试鹿角珊瑚群落的产卵月份和产卵高峰月份。可以通过海面温度（SST）、光合有效辐射、风速、海流速度、降雨量或日落时间来预测。与高平均海表温度引发珊瑚产卵的经典观点相反，我们发现海表温度的快速增加是这两种情况下的最佳预测因素（产卵月份：R-2 = 0.73，峰值：R-2 = 0.62）。我们的研究结果表明，海表温度的快速增加为大地理范围内的珊瑚群产卵提供了主要的邻近线索。我们假设珊瑚产卵的时间最终是为了确保最佳的受精成功率。
Coral spawning times have been linked to multiple environmental factors; however, to what extent these factors act as generalized cues across multiple species and large spatial scales is unknown. We used a unique dataset of coral spawning from 34 reefs in the Indian and Pacific Oceans to test if month of spawning and peak spawning month in assemblages of Acropora spp. can be predicted by sea surface temperature (SST), photosynthetically available radiation, wind speed, current speed, rainfall or sunset time. Contrary to the classic view that high mean SST initiates coral spawning, we found rapid increases in SST to be the best predictor in both cases (month of spawning: R-2 = 0.73, peak: R-2 = 0.62). Our findings suggest that a rapid increase in SST provides the dominant proximate cue for coral mass spawning over large geographical scales. We hypothesize that coral spawning is ultimately timed to ensure optimal fertilization success.