Anemonefsh aggressiveness afects the presence of Dascyllus trimaculatus coexisting with host anemones
Anemonefsh aggressiveness afects the presence of Dascyllus trimaculatus coexisting with host anemones
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Anemonefsh 的攻击性影响与寄主海葵共存的 Dascyllus trimaculatus 的存在
DOI：
10.1007/s00227-020-03696-9
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发表时间：
2020
期刊：
影响因子：
2.4
通讯作者：
James Davis Reimer
中科院分区：
文献类型：
--
作者：
Kina Hayashi;Katsunori Tachihara;James Davis Reimer
珊瑚礁最著名的共生现象之一是宿主海葵和海葵鱼之间的关系。宿主海葵不仅被海葵鱼使用，也被其他物种使用，例如三斑花鲈（Dascyllus trimaculatus）的未成熟阶段。海葵鱼可以是一个上级竞争对手。trimaculatus，共享主机海葵作为庇护所资源。珊瑚礁鱼类种间对栖息地资源的竞争被认为是影响其群落结构的重要因素。本文研究了影响海葵对D. trimaculatusaround Okinawajima Island.在296个群体中，D.三斑海葵寄主海葵52只，占17.6%。决策树分析（CHAID）使用五个自变量（宿主海葵和海葵鱼的种类、成年海葵鱼的存在/不存在、未成熟海葵鱼的数量和宿主海葵的大小）揭示D.三斑海葵很少占据海葵Entacmaea quadricolor和Stichodactyla haddoni，也很少与双锯鱼Amphiprion frenatus和A.波利姆努斯。我们实验提出了一种D. trimaculatusto殖民地的六种海葵，并比较了攻击行为的持续时间。A. frenatusandA. polymnus明显长于其他四种。我们的研究结果表明，在海葵共生的物种组成可能会受到共存的海葵鱼侵略行为对入侵者不同的物种。
One of the most well-known symbiosis of coral reefs is the relationship between host anemones and anemonefish. Host anemones are used not only by anemonefish but also by other species such as the immature phase of the three spot damsel (Dascyllus trimaculatus). Anemonefish can be a superior competitor toD. trimaculatus, which shares host anemones as shelter resources. Interspecific competition for shelter resources is considered to be an important factor affecting community structure in coral reef fish. In this study, we investigated the factors affecting host anemone utilization ofD. trimaculatusaround Okinawajima Island.Among 296 colonies,D. trimaculatusinhabited 52 (= 17.6%) host anemones. Decision tree analyses (CHAID) using five independent variables (species of host anemone and anemonefish, presence/absence of adult anemonefish, numbers of immature anemonefish, and size of host anemone) revealed thatD. trimaculatusrarely occupied the anemonesEntacmaea quadricolorandStichodactyla haddoni, and seldom cohabited withAmphiprion frenatusandA. polymnus. We experimentally presented a clay model ofD. trimaculatusto colonies of six species of anemonefish and compared the duration of aggressive behavior. The aggressive behaviors ofA. frenatusandA. polymnuswere significantly longer and more intense than that of the other four species. Our findings demonstrate that species composition in anemone symbioses may be affected by coexisting anemonefish as aggressive behavior toward intruders differs among species.