Predator cue studies reveal strong trait-mediated effects in communities despite variation in experimental designs
Predator cue studies reveal strong trait-mediated effects in communities despite variation in experimental designs
复制标题
捕食者线索研究揭示了社区中强烈的特征介导效应，尽管实验设计有所不同
DOI：
10.1016/j.anbehav.2013.09.036
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发表时间：
2013
期刊：
影响因子：
2.5
通讯作者：
Paterson R
中科院分区：
文献类型：
--
作者：
Paterson R
亮点捕食者线索实验经常评估诱饵效应。我们研究了实验设计变化对猎物反应的影响。捕食者对鱼类捕食者线索的行为反应在实验之间是一致的。捕食者对其猎物的非消耗性或特征调节的影响往往超过捕食者对猎物的密度调节的相互作用。例如，捕食者的存在可以改变猎物的行为、生理、形态和/或发育。尽管文献如雨后春笋般涌现，但我们识别猎物行为反应的一般模式的能力可能会受到用于评估特质中介效应的捕食者线索实验的不一致方法的影响。因此，我们进行了一项荟萃分析，以突出可能影响无脊椎动物猎物对鱼类捕食者暗示的行为反应的变量(如水类型、捕食者饲养方式、暴露时间)。这表明，尽管实验方法存在很大差异，但猎物活动和避难所使用的变化总体上是非常一致的。我们的荟萃分析显示，无脊椎动物改变了它们对捕食者线索的行为，这表明无脊椎动物对鱼线索中的特定饮食信息没有反应。无脊椎动物也改变了它们的行为，而不考虑捕食者的暗示添加制度和鱼的饱足度。线索强度和暴露时间对无脊椎动物的行为没有显著影响。我们还强调指出，寄生等潜在混杂因素很少有足够详细的记录来评估其影响的大小。通过考察在实验设计变化较大的情况下发现特质中介效应的可能性，我们的研究表明，特质中介效应在自然界中可能具有普遍而强大的影响。
HighlightsTrait-mediated effects are frequently assessed with predator cue experiments.We examined the influence of experimental design variations on prey response.Prey behavioural responses to fish predator cue were consistent between experiments.Nonconsumptive or trait-mediated effects of predators on their prey often outweigh density-mediated interactions where predators consume prey. For instance, predator presence can alter prey behaviour, physiology, morphology and/or development. Despite a burgeoning literature, our ability to identify general patterns in prey behavioural responses may be influenced by the inconsistent methodologies of predator cue experiments used to assess trait-mediated effects. We therefore conducted a meta-analysis to highlight variables (eg water type, predator husbandry, exposure time) that may influence invertebrate prey's behavioural responses to fish predator cues. This revealed that changes in prey activity and refuge use were remarkably consistent overall, despite wide differences in experimental methodologies. Our meta-analysis shows that invertebrates altered their behaviour to predator cues of both fish that were fed the focal invertebrate and those that were fed other prey types, which suggests that invertebrates were not responding to specific diet information in the fish cues. Invertebrates also altered their behaviour regardless of predator cue addition regimes and fish satiation levels. Cue intensity and exposure time did not have significant effects on invertebrate behaviour. We also highlight that potentially confounding factors, such as parasitism, were rarely recorded in sufficient detail to assess the magnitude of their effects. By examining the likelihood of detecting trait-mediated effects under large variations in experimental design, our study demonstrates that trait-mediated effects are likely to have pervasive and powerful influences in nature.
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影响因子：
4.8
作者：
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通讯作者：
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DOI：
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发表时间：
2003
期刊：
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作者：
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DOI：
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发表时间：
1990
期刊：
影响因子：
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作者：
J. Holomuzki;J. Hoyle
通讯作者：
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DOI：
10.1017/cbo9780511987359
发表时间：
2011-07
期刊：
--
影响因子：
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作者：
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通讯作者：
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