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首页> 外文期刊>Marine biology >Dietary overlap among coral-feeding butterflyfishes (Chaetodontidae) at Lizard Island, northern Great Barrier Reef
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Dietary overlap among coral-feeding butterflyfishes (Chaetodontidae) at Lizard Island, northern Great Barrier Reef

机译：大堡礁北部蜥蜴岛以珊瑚为食的蝴蝶鱼（Chaetodontidae）的饮食重叠

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摘要

This study documented the range of corals, and other prey types, consumed by 20 species of butterflyfishes, which co-occur at Lizard Island, northern Great Barrier Reef, Australia. Six species (Chaetodon aureofasciatus, C. baronessa, C. lunulatus, C. plebius, C. rainfordi and C. trifascialis) fed almost exclusively on scleractinian corals, and a further eight species (C. citrinellus, C. kleinii, C. lunula, C. melannotus, C. rafflesi, C. speculum, C. ulietensis, and C. unima-culatus) took a significant proportion of their bites from corals. The other six species (C. auriga, C. ep-hippium, C. lineolatus, C. semeion, C. vagabundus, and Chelmon rostratus) rarely consumed coral, but fed on small discrete prey items from non-coral substrates. Coral-feeding butterflyfishes consumed a wide range of corals. Chaetodon lunulatus, for example, consumed 51 coral species from 24 different genera. However, there was up to 72% dietary overlap between coral-feeding butterflyfishes, with 11/14 species feeding predominantly on Acropora hyacinthus or Pocillopora dami-cornis. The most specialised corallivore, C. trifascialis, took 88% of bites from A. hyacinthus. Chaetodon trifascialis defend territories encompassing one or more colonies of A. hyacinthus, and may have prevented other species such as C. lunulatus from feeding even more extensively on this coral. This study has shown that coexistence of coral-feeding butterflyfishes occurs despite an apparent lack of partitioning of prey resources. While different coral-feeding butterflyfishes were more or less selective in their use of different coral prey, virtually all species fed predominantly on A. hyacinthus or P. damicornis.
机译：这项研究记录了在澳大利亚大堡礁北部的蜥蜴岛共生的20种蝴蝶鱼所消耗的珊瑚和其他猎物类型的范围。六种（Chaetodon aureofasciatus，C。baronessa，C。lunulatus，C。plebius，C。rainfordi和C.trifascialis）几乎完全以骨珊瑚为食，另外八种（C. citrinellus，C。kleinii，C。lunulaus） ，C。melannotus，C。rafflesi，C。speculum，C。ulietensis和C. unima-culatus）的大部分叮咬来自珊瑚。其他六个物种（C. auriga，C。ep-hippium，C。lineolatus，C。semeion，C。vagabundus和Celmon rostratus）很少食用珊瑚，但以来自非珊瑚底物的小的离散猎物为食。以珊瑚为食的蝴蝶鱼消耗了各种各样的珊瑚。例如，Chaetodon lunulatus食用了24个不同属的51种珊瑚。但是，以珊瑚为食的蝴蝶鱼在饮食上有高达72％的重叠，其中有11/14种主要以凤眼鱼或大角Po为食。最专业的珊瑚虫，C。trifascialis，从风信子中吸收了88％的叮咬。 Chaetodon trifascialis捍卫了一个或多个风信子菌殖民地的领土，并可能阻止了其他物种（例如C. lunulatus）以这种珊瑚为食。这项研究表明，尽管显然缺乏猎物资源的分配，但以珊瑚为食的蝴蝶鱼却并存。尽管不同的以珊瑚为食的蝴蝶鱼在使用不同的珊瑚猎物时或多或少具有选择性，但实际上，所有种类的鱼主要以风信子或大角鲨为食。

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  • 来源
    《Marine biology》 |2005年第2期|p.373-382|共10页
  • 作者

    Morgan S. Pratchett;

  • 作者单位

    Centre for Coral Reef Biodiversity, School of Marine Biology and Aquaculture, James Cook University of North Queensland, Townsville Q4811, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境生物学;
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