Enhancement of coral recruitment by in situ mass culture of coral larvae
Enhancement of coral recruitment by in situ mass culture of coral larvae
复制标题
通过原位大量培养珊瑚幼虫来增强珊瑚的补充
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
S. Field
中科院分区：
文献类型：
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作者：
A. Heyward;Luke D. Smith;M. Rees;S. Field
需要在野外培养和定居石珊瑚幼虫的新技术，以阐明补充在种群动态中的作用，并为珊瑚礁恢复提供选择。珊瑚胚胎的自然多物种聚集体在每年大规模产卵后经常在海面形成浮膜，被认为是大规模珊瑚养殖的潜在资源。在海上发现了含有数十亿个胚胎的浮油，并对数百万个胚胎进行了二次取样，并在停泊在珊瑚礁上的简单浮池中成功培养。珊瑚幼虫被饲养在浮池中，直到能够定居，然后通过从池塘到临时固定在珊瑚礁底层的网状外壳的软管将其播种到珊瑚礁环境中。与自然速率相比，暴露于培养幼虫的珊瑚礁区域表现出珊瑚幼虫招募的显着增强。结果表明，能够以受控的新兵密度在珊瑚礁的特定区域播种。我们的结论是，在世界各地的许多珊瑚礁上发现的自然产卵浮膜为大规模珊瑚养殖提供了机会，这可能适用于自然补充有限的珊瑚礁恢复和管理策略。
New technologies for culturing and settling scleractinian coral larvae in the field are required to elucidate the role of recruitment in population dynamics and to provide options for reef rehabilitation. Natural multi-species aggregations of coral embryos, which frequently form slicks on the sea surface after large-scale annual spawnings, were identified as a potential resource for mass coral culture. Slicks containing billions of embryos were found at sea and several million embryos were sub-sampled and successfully cultured in simple floating ponds, moored over the reef. Coral larvae were maintained in the floating ponds until competent to settle, and then seeded onto the reef environment via hoses from the ponds to mesh enclosures temporarily fixed to the reef substratum. Reefal areas exposed to the cultured larvae exhibited a dramatic enhancement of coral larval recruit- ment compared to natural rates. The results demonstrate the ability to seed defined areas of reef with controlled densities of recruits. We conclude that natural spawning slicks, which have been noted on numerous reefs throughout the world, provide opportunities for very large-scale culture of corals, which may have application in reef rehabilitation and management strategies where natural recruit- ment is limited.