Male vigilance and presence are important for foraging by female Chinese grouse in the pre-incubation period
Male vigilance and presence are important for foraging by female Chinese grouse in the pre-incubation period
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雄性的警惕性和存在对于雌性松鸡在孵化前的觅食非常重要
DOI：
10.2981/wlb.00257
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发表时间：
2017-06
期刊：
影响因子：
1.9
通讯作者：
Sun Yuehua
中科院分区：
文献类型：
--
作者：
Lou Yingqiang;Shi Mei;Fang Yun;Swenson Jon E.;Lyu Nan;Sun Yuehua
在一些一夫一妻制的鸟类中，雄性比雌性投入更多的时间在警惕上，特别是在预孵化期。由于行为是耗费时间的，因此在警惕和进食行为之间存在权衡。雄性的警觉性可以被看作是雄性对配偶的投资，可以通过减少捕食的危险，增加雌性的生存概率，让雌性有更多的时间觅食，以获得更多的产卵和孵化资源。本研究记录了中国松鸡Tetrastes sewerzowi在预孵化期与其配偶和单独捕食时的警戒和摄食时间比例，并通过捕食者叫声回放估计了雄性在更严重捕食压力下的警戒。我们的研究结果表明，配对的雄性中国松鸡花更多的时间在警惕性比未配对的男性和配对的女性，并可以改变他们的活动预算，以响应社会背景（即有和没有他们的伴侣）和实验遇到一个重要的捕食者。雄性的警觉行为和存在让雌性花更多的时间觅食。因此，雄性伴侣的警戒行为可能对雌性的生存和繁殖成功起着重要的作用。在一夫一妻制的松鸡物种中，中国松鸡在预孵化期内用于雄性警戒和雌性觅食的时间比例最高，这可能是因为中国松鸡是最小的松鸡物种，具有最高的相对生殖投资。
In some monogamous birds, males invest more time in vigilance than females, especially during the pre-incubation period. As behaviors are time costly, there is a tradeoff between vigilance and feeding behavior. Male vigilance can be regarded as a male investment in their mates and may benefit the female by reducing the danger of predation, increasing her probability of survival, and allowing more time for her to forage to obtain more resources for egg production and incubation. In this study, we documented the proportion of time spent in vigilance and feeding by Chinese grouse Tetrastes sewerzowi with their mates and alone during the pre-incubation period, and then estimated male vigilance under more severe predation pressures through predator call playback. Our results indicated that paired male Chinese grouse spend more time in vigilance than unpaired males and paired females and could alter their activity budgets in response to the social context (i.e. with and without their mate) and an experimental encounter with an important predator. Male vigilance behavior and presence allowed females to spend more time foraging. We therefore conclude that vigilance behavior by their male partners by may play an important role in promoting the females' survival and probably the reproductive success. The proportion of time allocated for vigilance by males and foraging by females of Chinese grouse during the pre-incubation period was the highest recorded among monogamous grouse species, perhaps because the Chinese grouse is the smallest grouse species and has the highest relative reproductive investment.
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影响因子：
1.9
作者：
Yue-Hua Sun
通讯作者：
Yue-Hua Sun
DOI：
10.2307/1368202
发表时间：
1991-08
期刊：
The Condor
影响因子：
--
作者：
G. Gauthier;J. Tardif
通讯作者：
G. Gauthier;J. Tardif
影响因子：
2.5
作者：
J. Dahlgren
通讯作者：
J. Dahlgren
影响因子：
3.4
作者：
G. Rieucau;Julien G. A. Martin
通讯作者：
G. Rieucau;Julien G. A. Martin
DOI：
10.1644/1545-1542(2001)082
发表时间：
2001-05
期刊：
--
影响因子：
--
作者：
Clara Stefen
通讯作者：
Clara Stefen