Unique population dynamics of Japanese field vole: Winter breeding and summer population decline
Unique population dynamics of Japanese field vole: Winter breeding and summer population decline
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日本田鼠独特的种群动态：冬季繁殖和夏季种群下降
DOI：
10.1002/1438-390x.12113
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发表时间：
2022
影响因子：
1.7
通讯作者：
Azuma Nobuyuki
中科院分区：
文献类型：
--
作者：
Murano Chie;Iijima Hayato;Azuma Nobuyuki
众所周知，冬季温度会影响小型哺乳动物的生活史。寒冷的气温需要增加生存的能量需求，最近的研究表明，积雪可以有负面和正面的影响。随着每一次新的观察，我们对影响小型哺乳动物种群的机制有了更全面的了解。本文报道了我们最近对日本田鼠的研究结果。日本田鼠的数量在早春达到高峰，秋季达到低谷。为了了解这些田鼠的种群动态，我们进行了捕获标记再捕获调查，然后使用贝叶斯分层模型估计了季节丰度，招募，捕获概率和生存概率。我们还分析了哺乳动物的通才捕食者访问的生存概率的影响。我们的数据表明，早春的人口高峰是由于密集的冬季繁殖和最高的生存概率在深积雪覆盖期间。当积雪达到一定深度时，环境可以联合收割机，提高生存概率，有利于繁殖。相反，在5月和6月的繁殖季节，存活概率达到最低，导致种群减少，尽管繁殖。春季和秋季之间的低生存概率可能归因于多面手捕食者的影响，低植被可能放大了这种影响。因此，深雪覆盖和多面手捕食者被认为是形成该果园独特种群动态的关键因素。
It is common knowledge that winter temperatures influence the life history of small mammals. Cold temperatures necessitate increased energy requirements for survival, and recent studies indicate that snow cover can have both negative and positive influences. With each new observation, we develop a more comprehensive understanding of the mechanisms that influence small mammal populations. Here we report on our recent study on Japanese field voleMicrotus montebelli, which reaches its peak in population during the early spring and its low during the autumn. To understand the population dynamics of these voles, we conducted a capture‐mark‐recapture survey, then estimated the seasonal abundance, recruit, capture probabilities, and survival probabilities using the Bayesian hierarchical model. We also analyzed the impact of mammalian generalist predator visits on the survival probabilities. Our data indicates that the early spring peak in population is due to intensive winter breeding and the highest survival probabilities during the periods of deep snow cover. When snow cover reaches a certain depth, the circumstances can combine to raise survival probability and favor breeding. During the breeding season in May and June, on the contrary, the survival probability reached its lowest, resulting in a decrease in population despite breeding. The low survival probability between spring and autumn could be attributed to the impact of generalist predators, and low vegetation may have amplified the effect. In summary, the deep snow cover and generalist predators were considered to be the key factors shaping this unique population dynamics in this orchard area.
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DOI：
10.2307/2401682
发表时间：
1966
期刊：
影响因子：
--
作者：
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通讯作者：
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1998
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Researches on Population Ecology
影响因子：
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影响因子：
4.8
作者：
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通讯作者：
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影响因子：
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