...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>African Journal of Ecology >Foraging efficiency and vigilance behaviour of impala: the influence of herd size and neighbour density
【24h】

Foraging efficiency and vigilance behaviour of impala: the influence of herd size and neighbour density

机译：黑斑羚的觅食效率和警惕行为：牛群大小和邻居密度的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Group foraging can be beneficial for ungulates by decreasing the time required for vigilance, but it can also prove costly because of competition. To determine responses to gregarious behaviour, we studied foraging activity and vigilance of impala (Aepyceros melampus) near Kruger National Park, South Africa. We measured time spent foraging, vigilant, moving, grooming, engaging in social interactions and determined herd size and group distribution (i.e. density). We calculated accepted food abundance (AFA), food ingestion rate, steps per minute and percent vigilance for female, bachelor male and herd male impala. There was no relationship between herd size and vigilance, but vigilance decreased with increasing density (t, = 4.91, P <0.0001). Additionally, AFA decreased (t, = 5.96, P <0.0001) and steps per minute increased (t, = 14.38, P < 0.0001) as more individuals fed in close proximity to each other. Impala could be altering their behaviour to accommodate a perceived change in resources because of intraspecific competition and these adjustments might be related more to the distribution of herd members than to herd size. Further studies should examine the behaviour of gregarious animals in relation to the distribution of herd members in addition to group size.
机译：团体觅食可以减少警惕所需的时间，从而对有蹄类动物有利，但由于竞争，这样做也可能会造成高昂的代价。为了确定对群居行为的反应，我们研究了南非克鲁格国家公园附近黑斑羚（Aepyceros melampus）的觅食活动和警惕性。我们测量了觅食，警惕，移动，梳理，参与社交活动所花费的时间，并确定了牛群的大小和群体分布（即密度）。我们计算了女性，单身男性和成年男性黑斑羚的可接受食物丰度（AFA），食物摄入率，每分钟步数和警惕度百分比。牛群大小与警惕性之间没有关系，但警惕性随密度的增加而降低（t，= 4.91，P <0.0001）。另外，随着更多个体彼此靠近喂养，AFA下降（t，= 5.96，P <0.0001），每分钟步数增加（t，= 14.38，P <0.0001）。由于种内竞争，Impala可能会改变其行为以适应资源的感知变化，并且这些调整可能与牧群成员的分布而不是与牧群规模有关。进一步的研究应该检查群居动物除群大小以外与群居动物分布有关的行为。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号