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首页> 外文期刊>Ecological research >Alarm scent-marking during predatory attempts in the Cabrera vole (Microtus cabrerae Thomas, 1906)
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Alarm scent-marking during predatory attempts in the Cabrera vole (Microtus cabrerae Thomas, 1906)

机译：在Cabrera田鼠的掠夺性尝试中发出警报气味标记（Microtus cabrerae Thomas，1906年）

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摘要

The alarm pheromones often released by animals under stressful situations seem to elicit behavioral changes in conspecifics, which in the appropriate context can be viewed as anti-predatory responses. However, the releasing of alarm pheromones associated with predatory events has not been demonstrated in mammals. In the current study with wild-caught Cabrera voles, we carried out experiments in the laboratory and in the field to assess the release of alarm pheromones in scent-marks during simulated predatory events and disclose their effects on conspecifics. We first conducted an assay wherein voles where let to scent-mark a clean substrate in the absence of disturbance (control) and under the simulation of predatory events. Contrarily to the control, no fecal boli were released and the area marked with urine was significantly larger during the predatory simulation. In a subsequent assay, we assessed the voles' preference between urine-marks released under predatory simulation and in control conditions. Voles showed a significant preference by control substrates. Finally, a third assay was carried out in the vole's habitat wherein the individual activity was monitored by radio-tracking before and after placement of urine-marks obtained during the conditions described above. The vole's activity was only reduced near the urine-marks released during the simulated predatory events. The results suggest that: (1) during predatory attempts, Cabrera voles release an alarm pheromone in their urine-marks; (2) the putative alarm pheromone reduces the voles' activity in the surroundings of the marked area; (3) the putative alarm pheromone persists in the field affecting conspecifics' activity for several days.
机译：动物在压力情况下经常释放的警报信息素似乎引起特定物种的行为变化，在适当的情况下，可以将其视为反掠夺性反应。但是，尚未在哺乳动物中证明与掠食性事件有关的警报信息素的释放。在目前对野生卡布雷斯田鼠的研究中，我们在实验室和野外进行了实验，以评估模拟掠食性事件期间警报信息素在气味标记中的释放，并揭示其对同种异体的影响。我们首先进行了一项测定，其中田鼠在没有干扰（对照）的情况下和在掠夺性事件的模拟下让气味标记干净的底物。与对照相反，在掠食性模拟过程中，没有粪便释放，带有尿液的区域明显更大。在随后的分析中，我们评估了田鼠在掠食性模拟和对照条件下释放的尿液标记之间的偏好。田鼠对对照底物表现出明显的偏爱。最后，在田鼠的栖息地中进行第三次测定，其中在放置上述条件下获得的尿液标记之前和之后通过无线电跟踪监测个体活动。田鼠的活动仅在模拟掠食性事件期间释放的尿液标记附近降低。结果表明：（1）在捕食性尝试中，Cabrera田鼠在尿液中释放出警报信息素。 （2）假定的警报信息素会减少标记区域周围田鼠的活动； （3）推定的警报信息素在影响特定物种活动的野外持续了几天。

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  • 来源
    《Ecological research》 |2013年第2期|335-343|共9页
  • 作者

    Luis Alexandre Piteira Gomes; Pedro Miguel Pedreirinho Salgado; Eduardo Nuno Barata; Antonio Paulo Pereira Mira;

  • 作者单位

    Grupo de Ecossistemas e Paisagens Mediterranicas, Instituto de Ciencias Agrarias e Ambientais Mediterranicas, Universidade de Evora, Nucleo da Mitra, Apartado 94, 7002-554 Evora, Portugal,Unidade de Biologia da Conservacao, Universidade de Evora, Nucleo da Mitra, Apartado 94, 7002-554 Evora, Portugal;

    Unidade de Biologia da Conservacao, Universidade de Evora, Nucleo da Mitra, Apartado 94, 7002-554 Evora, Portugal;

    Departamento de Biologia, Universidade de Evora, Apartado 94, 7002-554 Evora, Portugal;

    Unidade de Biologia da Conservacao, Universidade de Evora, Nucleo da Mitra, Apartado 94, 7002-554 Evora, Portugal,CIBIO, Centro de Investigacao em Biodiversidade e Recursos Geneticos, Polo de, Evora, Portugal;

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  • 关键词

    alarm pheromone; voles; microtus cabrerae; scent-marking; predation; anti-predatory;

    机译：警报信息素;田鼠田鼠气味标记;掠夺反掠夺;

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