当前位置: X-MOL 学术Behav. Ecol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Antipredator responses toward cat fur in wild brown rats tested in a semi-natural environment
Behavioral Ecology ( IF 2.4 ) Pub Date : 2021-03-29 , DOI: 10.1093/beheco/arab038
Miguel A Bedoya-Pérez 1, 2, 3 , Anna Le 3 , Iain S McGregor 1, 2, 4 , Mathew S Crowther 3
Affiliation  

Sensitivity to predator-related cues and performance of antipredator behaviors are universal among prey species. Rodents exhibit a diverse suite of antipredator behaviors that have been examined in both field and laboratory studies. However, the results from the laboratory have not always translated to the field. While laboratory studies consistently indicate strong fear-inducing effects of cat fur/skin odors, it is unclear whether this occurs in the field with wild rats. To address this issue, we tested the antipredator responses of wild brown rats (Rattus norvegicus) to predatory (domestic cat fur) and nonpredatory (common brushtail possum fur) odor cues in a semi-natural experimental paradigm. Rats were housed in open air enclosures containing two feeding stations. Following several nights of acclimatization, the feeding stations were paired with cat fur, possum fur, or no fur. Rats spent less time at a feeding station that was paired with cat fur. Duration of time spent at feeding stations increased across consecutive test days and across hours within individual test nights, although the rate of increase within nights was lower for cat fur paired stations. This overall increase might reflect habituation of antipredator behaviors, increasing hunger, or loss of cue potency over time. We suggest that wild brown rats recognize and respond to cat fur odor cues, but their behavioral response is highly adaptable and finely tuned to the trade-off between predation risk and starvation that occurs across short temporal scales.

中文翻译:

在半自然环境中测试的野生棕色大鼠对猫毛的反捕食者反应

对捕食者相关线索的敏感性和反捕食者行为的表现在猎物物种中是普遍的。啮齿动物表现出一系列不同的反捕食者行为,这些行为已在现场和实验室研究中得到检验。然而,实验室的结果并不总是转化为现场。虽然实验室研究一致表明猫毛皮/皮肤气味具有强烈的恐惧诱导作用,但尚不清楚这是否发生在野生大鼠的野外。为了解决这个问题,我们在半自然实验范式中测试了野生棕色大鼠 (Rattus norvegicus) 对掠食性 (家猫毛皮) 和非掠食性 (常见的刷尾负鼠毛皮) 气味线索的反捕食者反应。将大鼠饲养在包含两个喂食站的露天围栏中。经过几个晚上的适应,喂食站与猫毛、负鼠毛或无毛配对。老鼠在与猫毛配对的喂食站花费的时间更少。在连续的测试日和单个测​​试晚上的几个小时内,在喂食站花费的时间持续增加,尽管猫毛配对站的夜间增加率较低。这种总体增长可能反映了反捕食者行为的习惯化、饥饿感的增加或随着时间的推移而丧失提示效力。我们建议野生棕色大鼠识别并响应猫毛的气味线索,但它们的行为反应具有很强的适应性,并且可以很好地适应在短时间尺度上发生的捕食风险和饥饿之间的权衡。在连续的测试日和单个测​​试晚上的几个小时内,在喂食站花费的时间持续增加,尽管猫毛配对站的夜间增加率较低。这种总体增长可能反映了反捕食者行为的习惯化、饥饿感的增加或随着时间的推移而丧失提示效力。我们建议野生棕色大鼠识别并响应猫毛的气味线索,但它们的行为反应具有很强的适应性,并且可以很好地适应在短时间尺度上发生的捕食风险和饥饿之间的权衡。在连续的测试日和单个测​​试晚上的几个小时内,在喂食站花费的时间持续增加,尽管猫毛配对站的夜间增加率较低。这种总体增长可能反映了反捕食者行为的习惯化、饥饿感的增加或随着时间的推移而丧失提示效力。我们建议野生棕色大鼠识别并响应猫毛的气味线索,但它们的行为反应具有很强的适应性,并且可以很好地适应在短时间尺度上发生的捕食风险和饥饿之间的权衡。或随着时间的推移失去提示效力。我们建议野生棕色大鼠识别并响应猫毛的气味线索,但它们的行为反应具有很强的适应性,并且可以很好地适应在短时间尺度上发生的捕食风险和饥饿之间的权衡。或随着时间的推移失去提示效力。我们建议野生棕色大鼠识别并响应猫毛的气味线索,但它们的行为反应具有很强的适应性,并且可以很好地适应在短时间尺度上发生的捕食风险和饥饿之间的权衡。
更新日期:2021-03-29
down
wechat
bug