Transmission distance of chemical cues from coral habitats: implications for marine larval settlement in context of reef degradation
Transmission distance of chemical cues from coral habitats: implications for marine larval settlement in context of reef degradation
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珊瑚栖息地化学信号的传输距离：珊瑚礁退化背景下对海洋幼虫定居的影响
DOI：
10.1007/s00227-014-2451-5
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发表时间：
2014
期刊：
影响因子：
2.4
通讯作者：
Nakamura Y
中科院分区：
文献类型：
--
作者：
Lecchini D;Miura T;Lecellier G;Banaigs B;Nakamura Y
本研究(日本石垣岛)探索了活珊瑚礁和死珊瑚礁发出的化学线索的传输距离(Exp.1：在距礁石0、1和2公里处的水样采样站进行高效液相色谱(HPLC)分析)以及这些化学线索对幼鱼、甲壳类和头足类动物的潜在吸引力(Exp.2.选择水槽对54头绿僵菌幼虫、52头斑纹夜蛾幼虫和16头宽纹乌贼幼虫进行了水槽试验。在实验1中，高效液相色谱分析强调，活珊瑚礁(而不是死珊瑚礁)产生不同和不同的分子，其中一些分子可以运输到距离珊瑚礁至少2公里的地方，浓度降低14-17倍。在实验2中，绿色隐翅虫，Palaemonidesp，和。活珊瑚礁(采样点：0公里)的化学物质明显吸引了宽体幼虫，而死珊瑚礁则没有。然而，只有C.直到距离活珊瑚礁1公里的地方，病毒幼虫才发现了化学物质的踪迹。总体而言，我们的研究表明，与死珊瑚礁相比，活珊瑚礁释放的化学线索在海洋中运输得最远(至少2公里)，而鱼苗直到1公里才能察觉到这些线索。这些结果支持了幼虫在退化的珊瑚礁上定居无效的假设，这将有助于自然资源保护者和珊瑚礁管理者在日益退化的珊瑚礁上维护生物多样性。
The present study (Ishigaki Island, Japan) explored the distance of transmission of chemical cues emitted by live versus dead coral reefs (Exp. 1: High performance liquid chromatography (HPLC) analyses with water sampling station at 0, 1, and 2 km away from the reef) and the potential attraction of these chemical cues by larval fish, crustaceans, and cephalopods (Exp. 2: choice flume experiment conducted on 54Chromis viridislarvae, 52Palaemonidaesp larvae, and 16Sepia latimanuslarvae). In the experiment 1, HPLC analyses highlighted that the live coral reef (and not the dead coral reef) produced different and distinct molecules, and some of these molecules could be transported to a distance of at least 2 km from the reef with a reduction of concentration by 14–17-fold. In the experiment 2,C. viridis,Palaemonidaesp, andS. latimanuslarvae were significantly attracted by chemical cues from a live coral reef (sampling station: 0 km), but not from a dead coral reef. However, onlyC. viridislarvae detected the chemical cues until 1 km away from the live coral reef. Overall, our study showed that chemical cues emitted by a live coral reef were transported farthest away in the ocean (at least 2 km) compared to those from a dead coral reef and that fish larvae could detect these cues until 1 km. These results support the assumption of a larval settlement ineffective in degraded coral reefs, which will assist conservationists and reef managers concerned with maintaining biodiversity on reefs that are becoming increasingly degraded.