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首页> 外文期刊>Marine biology >Structural complexity but not territory sizes influences flight initiation distance in a damselfish
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Structural complexity but not territory sizes influences flight initiation distance in a damselfish

机译：结构复杂性但不影响领土大小，但会影响雀鲷的飞行起始距离

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摘要

The fear of predators can lead to behavioral changes in their prey, but animals must trade off defensive behavior against other compelling needs. For territorial species, responding to predators may be especially costly, because defense and escape are mutually incompatible. A growing literature documents risk assessment in fish, but a few studies have focused on extremely territorial fish, and nothing is known about how territory size, territorial interactions, habitat structural complexity, and life stage may modify risk assessment. We studied this in a damselfish (Stegastes fuscus) on coral reefs and measured risk assessment using flight initiation distance (FID). We found that only structural complexity explained variation in FID; fish in more complex habitats tolerated closer approach. Our study suggests that individuals in relatively more structurally complex territories are bolder than those that occur in less complex territories. Documenting the relative importance of these variables is important, because antipredator behavior influences not only the predator-prey relationship, but can also generate cascading effects, and influence the structure of the community and potentially entire ecosystems.
机译：对捕食者的恐惧会导致其猎物的行为发生变化，但动物必须在防御行为与其他令人信服的需求之间进行权衡。对于领土物种而言，对天敌的反应可能特别昂贵，因为防御和逃避是互不相容的。越来越多的文献记录了鱼类中的风险评估，但是一些研究集中在极度领地的鱼类上，而关于领土大小，领土相互作用，生境结构复杂性和生命阶段如何改变风险评估一无所知。我们通过对珊瑚礁的雀鲷（Stegastes fuscus）进行了研究，并使用飞行起始距离（FID）进行了风险评估。我们发现，只有结构复杂性才能解释FID的变化。在更复杂的栖息地中捕捞鱼类可以采用更接近的方法。我们的研究表明，在结构相对复杂的地区中的个人比在复杂程度较小的地区中的个人更大胆。记录这些变量的相对重要性很重要，因为反捕食者的行为不仅会影响食肉动物与猎物的关系，还会产生级联效应，并影响社区和整个生态系统的结构。

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  • 来源
    《Marine biology》 |2019年第5期|65.1-65.6|共6页
  • 作者

    Quadros Andre L. S.; Barros Francisco; Blumstein Daniel T.; Meira Verena H.; Nunes Jose Anchieta C. C.;

  • 作者单位

    Univ Fed Bahia, Lab Ecol Benton, Ctr Interdisciplinar Energia & Ambiente CIENAM, Inst Biol, Salvador, BA, Brazil;

    Univ Fed Bahia, Lab Ecol Benton, Ctr Interdisciplinar Energia & Ambiente CIENAM, Inst Biol, Salvador, BA, Brazil;

    Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, 621 Young Dr South, Los Angeles, CA 90095 USA;

    Univ Fed Bahia, Programa Posgrad Ecol & Biomonitoramento, Salvador, BA, Brazil;

    Univ Fed Bahia, Lab Ecol Benton, Ctr Interdisciplinar Energia & Ambiente CIENAM, Inst Biol, Salvador, BA, Brazil|Univ Fed Sul Bahia, Ctr Formacao Ciencias Ambientais, Lab Ecol & Conservacao Marinha, Porto Seguro, Brazil;

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