Galanto Nikko, Sartor Constance, Moscato Victoria, Lizama Mykel, Lemer Sarah
University of Guam Marine Laboratory, Mangilao, GU 96923 USA.
Coral Reefs. 2022;41(2):293-302. doi: 10.1007/s00338-022-02241-y. Epub 2022 Mar 27.
As global ocean temperatures continue to rise, severe declines in coral reef health and diversity are reported on a global scale. Recovery of coral reefs relies on reproduction and increased rates of successful recruitment, which can vary tremendously across coral species. We investigated the effects of increased temperatures in the environment of parental colonies on larval production, size, settlement and survival, in the heat-resistant coral in Guam Thanks to two tank experiments (eleven and four weeks, respectively) conducted over two consecutive years we found that larvae released by heat-treated parents (30 °C) were significantly smaller in size but greater in number, had normal settlement behavior and increased post-settlement survival rates compared to those released by control parent colonies (28 °C). We conclude that changes in the environment of parental colonies trigger an anticipatory maternal effect which leads to the release of preconditioned larvae with an increased chance of survival.
The online version contains supplementary material available at 10.1007/s00338-022-02241-y.
随着全球海洋温度持续上升，全球范围内都有关于珊瑚礁健康状况和多样性严重下降的报道。珊瑚礁的恢复依赖于繁殖以及成功补充数量的增加，而这在不同珊瑚物种间差异极大。我们研究了亲代珊瑚礁环境温度升高对关岛耐热珊瑚幼虫产量、大小、附着和存活的影响。通过连续两年分别进行的两个水槽实验（分别为11周和4周），我们发现，与对照亲代群体（28°C）释放的幼虫相比，经热处理的亲代（30°C）释放的幼虫体型显著更小，但数量更多，具有正常的附着行为，且附着后存活率提高。我们得出结论，亲代群体环境的变化引发了一种预期的母体效应，导致释放出具有更高存活几率的预处理幼虫。
在线版本包含可在10.1007/s00338-022-02241-y获取的补充材料。
