Coral spawning in the western Pacific Ocean is related to solar insolation: evidence of multiple spawning events in Palau
Coral spawning in the western Pacific Ocean is related to solar insolation: evidence of multiple spawning events in Palau
复制标题
西太平洋珊瑚产卵与日照有关：帕劳多次产卵事件的证据
作者：
L. Penland;J. Kloulechad;D. Idip;R. Woesik
珊瑚的繁殖时间表长期以来一直与区域海表温度（SST）的随之增加有关。然而，珊瑚也在热带大量产卵，那里的SST全年变化不大。在这里，我们表明，上升和下降，从太阳辐射最大值，这是电磁能量入射在地球表面，与珊瑚产卵事件在热带帕劳。两个日照最大值（春分和秋分的结果）在热带地区导致每年多次产卵事件。SST是热带珊瑚产卵的不良预测指标。多次产卵事件增加了基因重组的速度，这反过来又可能促进物种形成的可能性，并部分解释了热带珊瑚高度多样性的原因。我们还表明，大规模产卵与西太平洋33°N至30°S的近最大太阳辐射（5.0-7.2 kWh/m2/天）事件相吻合，应被视为驱动珊瑚生殖周期的主要变量之一。
Coral reproductive schedules have long been related to concomitant increases in regional sea surface temperature (SST). Yet, corals also mass spawn in the tropics, where SSTs vary little throughout the year. Here we show that the rise toward and fall from solar insolation maxima, which is the electromagnetic energy incident on the surface of the earth, coincide with coral spawning events in tropical Palau. Two insolation maxima (a consequence of the vernal and autumnal equinoxes) in the tropics lead to multiple spawning events per year. SSTs are poor predictors of coral spawning in the tropics. Multiple spawning events increase the rate of genetic recombination, which in turn may facilitate the likelihood of speciation and explain, in part, the high coral diversity in the tropics. We also show that mass spawning coincides with near-maximum solar insolation (5.0–7.2 kWh/m2/day) events from 33°N to 30°S in the western Pacific Ocean, and should be considered as one of the primary variables driving coral reproductive cycles.