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The influence of structural complexity and reef habitat types on flight initiation distance and escape behaviors in labrid fishes

机译：结构复杂性和礁石栖息地类型对lab鱼飞行起始距离和逃逸行为的影响

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摘要

Structural complexity is a key parameter for fish on reef habitats. Several studies have investigated the influence of this variable on aspects of reef fish population and community dynamics. However, there is a lack of knowledge on the influence of structural complexity on antipredator behavior. Here we studied the effect of habitat type and structural complexity on flight initiation distance (FID) and the escape behaviors of four labrid fishes (Halichoeres brasiliensis, H. penrosei, H. poeyi and Spari-soma axillare) on two different reef habitats (coral and rocky reefs). Habitat type influenced the FID of three of the studied species (H. brasiliensis, H. penrosei and S. axillare), and structural complexity negatively influenced the FID of two species (H. brasiliensis and S. axillare). The frequency of escape behaviors varied between species. All of them showed high frequency of the 'run away' behavior and low frequency of the 'leave the habitat' behavior. On coral reefs, structural complexity influenced the 'fled to the holes' for S. axillare only. Reef ecosystems worldwide are being modified by anthropogenic activities. Our results suggest that if such activities reduce structural complexity, then 'seascapes of fear' for labrid fishes will become more widespread, which could lead to negative consequences in the reef ecosystems.
机译：结构复杂性是珊瑚礁栖息地鱼类的关键参数。多项研究调查了此变量对珊瑚礁鱼类种群和群落动态的影响。但是，缺乏关于结构复杂性对反掠食者行为的影响的知识。在这里，我们研究了栖息地类型和结构复杂性对两个不同的珊瑚礁栖息地（珊瑚）的四个Labrid鱼类（Halichoeres brasiliensis，H。penrosei，H。poeyi和Spari-soma axillare）逃逸距离（FID）和逃逸行为的影响。和礁石）。栖息地类型影响了三个研究物种（巴西假单胞菌，彭氏螺旋体和腋臭链球菌）的FID，而结构复杂性对两个物种（巴西假丝酵母和腋臭链球菌）的FID产生了负面影响。逃避行为的频率在物种之间有所不同。他们都表现出“逃跑”行为的频繁发生和“离开栖息地”行为的发生频繁。在珊瑚礁上，结构的复杂性仅影响腋链球菌的“逃到洞中”。人类活动正在改变全世界的珊瑚礁生态系统。我们的结果表明，如果这种活动降低了结构的复杂性，那么对唇鱼的“恐惧海景”将变得更加广泛，这可能对珊瑚礁生态系统造成负面影响。

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  • 来源
    《Marine biology》 |2015年第3期|493-499|共7页
  • 作者

    Jose de Anchieta C. C. Nunes; Claudio L. S. Sampaio; Francisco Barros;

  • 作者单位

    Programs de Pos-Graduacao em Ecologia e Biomonitoramento, Laboratorio de Ecologia Bentonica, Universidade Federal da Bahia, Ondina, Salvador, BA 40170-115, Brazil,ECUS, Institute of Education, Science and Socio-Environmental Utility, Rio Vermelho, Salvador, BA 41940-250, Brazil;

    Departamento de Engenharia de Pesca, Unidade de Ensino Penedo, Universidade Federal de Alagoas, Maceio, AL, Brazil;

    Programs de Pos-Graduacao em Ecologia e Biomonitoramento, Laboratorio de Ecologia Bentonica, Universidade Federal da Bahia, Ondina, Salvador, BA 40170-115, Brazil;

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