Differences in predatory behavior among three bird species when attacking chemically defended and undefended prey
Differences in predatory behavior among three bird species when attacking chemically defended and undefended prey
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DOI：
10.1007/s10164-020-00668-w
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发表时间：
2020-08-18
影响因子：
0.9
通讯作者：
Suzuki, Toshitaka N.
中科院分区：
文献类型：
--
作者：
Barnett, Craig R. A.;Ringhofer, Monamie;Suzuki, Toshitaka N.
鸟类是昆虫的重要捕食者，昆虫通常会加入化学防御系统，这可能会让捕食者感到厌恶或有毒。捕食者可以以多种方式对化学防御的猎物做出反应，捕食者心理学的捕食方法通常将捕食视为一个一般过程，尽管物种之间可能会有多种反应。根据捕食者攻击猎物的不同，猎物的化学防御在减少捕食方面的有效性也可能有所不同。在这里，我们比较了日本温带森林中发现的三种不同种类的鸟类捕食者(日本灌木林莺[Horornis diphone]、水仙捕蝇者[Ficedula narcissina]和日本山雀[Parus Minor])的攻击策略。总体而言，我们发现，没有防御的猎物比有防御的猎物更受欢迎，但不同的捕食者物种有不同的偏好，处理猎物的方式也不同。这表明，不同的捕食者物种可能会对化学防御的猎物施加不同的选择压力，这增加了我们越来越多的认识，即捕食者的行为可能在捕食者物种之间有所不同。此外，我们的发现强调了理解自由生活的捕食者物种在无融合和拟态研究中行为差异的重要性。
Birds are important predators of insects and insects often incorporate chemical defenses that may make themselves distasteful or toxic to the predators. Predators can respond to chemically defended prey in multiple ways, the predator psychology approach to predation often treats predation as a general process despite the possibility for multiple responses among species. The effectiveness of a prey's chemical defense at reducing predation might also vary depending on what predator is attacking the prey. Here, we compared the attack strategies of three different species of avian predators (Japanese bush warblers [Horornis diphone], narcissus flycatchers [Ficedula narcissina], and Japanese tits [Parus minor]) which are found in the temperate forests of Japan. We found overall, that undefended prey was preferred over the defended prey, but the different predator species had different preferences and handled prey differently from one another. This suggests that different predator species might exert different selection pressures on chemically defended prey and this adds to our growing appreciation that predator behavior can vary among predator species. Moreover, our findings emphasize the importance of understanding differences in behavior among free-living predator species in studies of aposematism and mimicry.