Foraging, feeding, and physiological stress responses of wild wood mice to increased illumination and common genet cues.
Foraging, feeding, and physiological stress responses of wild wood mice to increased illumination and common genet cues.
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DOI：
10.1093/cz/zox048
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发表时间：
2018-08
期刊：
影响因子：
2.2
通讯作者：
Díaz M
中科院分区：
文献类型：
--
作者：
Navarro-Castilla Á;Barja I;Díaz M
在自然界中，动物暴露在捕食者施加的广泛威胁下，这些威胁可能直接或间接地影响被捕食物种的生态，通过害怕被捕食来影响它们的行为。在这里，我们研究了林鼠对模拟捕食风险的行为和生理反应。在新月夜和模拟满月条件(间接诱因)下，分别用对照诱捕器和普通Genetta genetta粪便处理的诱捕器对避险进行了分析。通过视频记录捕鼠器周围小鼠的活动，分析捕食行为所用的时间和捕获时间。食物摄入量是根据每个诱捕器中剩余的诱饵数量计算的。用酶免疫法测定粪便皮质酮代谢产物(FCM)，作为生理应激反应的指标。在满月期间捕获的木鼠较少，但只有未繁殖的成年雄性明显避免了常见的基因气味。老鼠在模拟满月的条件下更早地在晚上被捕获，后来在捕食者处理的陷阱中被捕获。当个体面对捕食者的粪便时，觅食活动较低，但食物摄入量和FCM水平都不受捕食风险线索的影响。捕食风险的直接和间接线索选择性地影响木鼠的行为，尽管行为反应似乎受到与个体对风险的感知相关的不同成本-收益平衡的调节。缺乏对捕食风险线索的生理反应表明，木鼠并不认为它们是可靠的应激源，或者反应太小或太短暂，无法用FCM测量。
In nature, animals are exposed to a broad range of threats imposed by predators, which may strongly influence the ecology of prey species directly or indirectly by affecting their behavior via fear of predation. Here, we studied wood mice Apodemus sylvaticus behavioral and physiological responses to simulated predation risk. Risk avoidance was analyzed by live trapping with control traps and traps treated with feces of common genet Genetta genetta (direct cue of risk) under new moon nights and following by simulated full moon conditions (indirect cue). The time devoted to foraging behavior and capture time were analyzed by video recording mice activity around traps. Food intake was calculated based on the amount of bait remaining in each trap. Fecal corticosterone metabolites (FCMs) were measured by enzyme-immunoassay as indicators of physiological stress responses. Fewer wood mice were captured during full moon, yet only non-breeding adult males clearly avoided common genet odor. Mice were captured sooner at night during the simulated full moon conditions and later in predator-treated traps. Foraging activity was lower when individuals faced predator’s feces, but neither food intake nor FCM levels were affected by predation risk cues. Direct and indirect cues of predation risk selectively affected wood mice behavior, although behavioral responses seem to be modulated by different costs–benefit balances related to the individual’s perception of risk. The lack of physiological responses to predation risk cues suggests that wood mice did not perceive them as reliable stressors or the response was too small or transient to be measured by FCM.
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影响因子：
2.7
作者：
BROWN, JS;KOTLER, BP;WIRTZ, WO
通讯作者：
WIRTZ, WO
影响因子：
2
作者：
DICKMAN, CR;DONCASTER, CP
通讯作者：
DONCASTER, CP
影响因子：
8.2
作者：
Apfelbach, R;Blanchard, CD;McGregor, IS
通讯作者：
McGregor, IS
影响因子：
2
作者：
CALDER, CJ;GORMAN, ML
通讯作者：
GORMAN, ML
影响因子：
1.8
作者：
Barja, Isabel;List, Rurik
通讯作者：
List, Rurik