Boldness-mediated habitat use tactics and reproductive success in a wild large herbivore
Boldness-mediated habitat use tactics and reproductive success in a wild large herbivore
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DOI：
10.1016/j.anbehav.2018.09.013
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发表时间：
2018-11-01
期刊：
影响因子：
2.5
通讯作者：
Morellet, Nicolas
中科院分区：
文献类型：
--
作者：
Bonnot, Nadege C.;Goulard, Michel;Morellet, Nicolas
资源获取和风险规避之间的平衡应根据性格类型而有所不同，这对健康具有潜在的连锁反应。尽管之前的研究表明勇气和健康成分之间存在联系，但很少有证据表明在野外调节这种关系的行为机制。由于栖息地利用是与使用每种栖息地类型相关的成本和收益之间权衡的结果，因此我们使用多项 Logit 混合模型评估了 64 只戴着 GPS 项圈的雌性狍 (Capreolus capreolus) 栖息地利用的个体差异。为了调查鹿的栖息地利用策略是否因其性格类型和每年的繁殖成功率而有所不同，我们评估了个体栖息地利用模式、胆量（以对处理的行为反应强度来衡量）和每年的繁殖成功率（以秋季是否有小鹿来衡量）之间的联系。尽管风险资源景观的每日和季节变化明显驱动了栖息地利用模式，但个体根据其在害羞大胆梯度上的位置和繁殖状况而采取了对比的栖息地利用策略。害羞的人更频繁地占据更安全的林地，即使在风险较低的夜间也是如此。相比之下，大胆的个体能够更好地利用丰富的开放栖息地。当秋季作物成熟时，这些雌性会产下更多的后代。最后，无论性格类型如何，更经常使用草地的雌性也取得了更高的年度繁殖成功率。总的来说，我们证明个体表现出不同的栖息地使用策略，作为其避免暴露于风险的能力和每年繁殖成功的函数。 (C) 2018 年动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
The balance between resource acquisition and risk avoidance should vary according to personality type, with potential knock-on effects for fitness. Although previous studies have suggested a link between boldness and fitness components, little evidence is available on the behavioural mechanisms mediating this relationship in the wild. Because habitat use is the outcome of the trade-off between the costs and benefits associated with using each habitat type, we evaluated between-individual differences in habitat use of 64 GPS-collared female roe deer, Capreolus capreolus, using multinomial logit mixed models. To investigate whether deer differed in their habitat use tactics in relation to their personality type and their annual reproductive success, we assessed the link between individual habitat use patterns, boldness (measured as the strength of behavioural responsiveness to handling) and annual reproductive success (measured by the presence/absence of fawns at heel during autumn). Although daily and seasonal variations in the risk-resource landscapes clearly drove patterns of habitat use, individuals adopted contrasting habitat use tactics depending on their position along the shy-bold gradient and their reproductive status. Shy individuals occupied safer woodland more frequently, even at night when risk is lower. In contrast, bold individuals were better able to exploit rich open habitats. When this included mature autumn crops, these females weaned more offspring. Finally, irrespective of personality type, females that used meadows more often also achieved higher annual reproductive success. Overall, we demonstrate that individuals express divergent habitat use tactics as a function of their ability to avoid exposure to risk and their annual reproductive success. (C) 2018 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.