Defended territories of an aggressive damselfish contain lower juvenile coral density than adjacent non-defended areas on Kenyan lagoon patch reefs
Defended territories of an aggressive damselfish contain lower juvenile coral density than adjacent non-defended areas on Kenyan lagoon patch reefs
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DOI：
10.1007/s00338-014-1229-z
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发表时间：
2015-03-01
期刊：
影响因子：
3.5
通讯作者：
Sluka, R. D.
中科院分区：
文献类型：
--
作者：
Gordon, T. A. C.;Cowburn, B.;Sluka, R. D.
宝石雀鲷，Plectroglyphidodon lacrymatus，积极地保卫珊瑚礁上的小块领土，它们在珊瑚礁上种植可食用的大藻类草坪。成对频率计数表明，幼珊瑚密度在雀鲷领地内低于邻近的无防御区域在肯尼亚的泻湖斑块珊瑚礁。珊瑚密度的差异随着珊瑚大小的增加而减小。雀鲷的直接养殖效应和区域内较高藻类密度的间接抑制效应都被认为是本文所得结果的潜在原因。小雀鲷的领地可以占据珊瑚礁的很大一部分；鱼类的领土行为对珊瑚礁结构的影响，特别是对幼珊瑚的复原力和生长速度的影响，可能比以前所认识到的更大。
Jewel damselfish, Plectroglyphidodon lacrymatus, aggressively defend small territories on coral reefs in which they cultivate lawns of edible macroalgae. Pairwise frequency counts showed that juvenile coral density was lower inside damselfish territories than that in adjacent non-defended areas on lagoon patch reefs in Kenya. These differences in coral density decreased as coral size increased. Direct farming effects of the damselfish and indirect inhibitory effects from higher algal densities inside territories are both thought to be potentially responsible for the results attained herein. Damselfish territories can occupy a large proportion of a coral reef; territorial behaviour in fish may have greater impacts on reef structure, in particular the resilience and growth rate of juvenile corals, than previously appreciated.