Vigilance strategy differentiation between sympatric threatened and common crane species

KIZ OpenIR > 科研部门 > 鸟类学（杨晓君）

	Vigilance strategy differentiation between sympatric threatened and common crane species
	Kong, Dejun; Luo, Weixiong; Moller, Anders Pape; Zhang, Yanyun; Yang, Xiaojun
	2020
发表期刊	BEHAVIOURAL PROCESSES
ISSN	0376-6357
卷号	176
摘要	Studies have indicated that threatened species may show reduced or elevated antipredator behavior compared with their close common relatives, but remarkably few studies revealed such differences in behavior among populations. Exploring factors affecting behavior between phylogenetically related common and threatened species could help understand such discrepancy. We tested for effects of external and internal variables including month, time of day, habitat type, distribution area, group composition status and group size on vigilance behavior (including group scan frequency and level) of two sympatric common Gres gnus and threatened G. nigricollis cranes with generalized linear models. We detected significant species effect on group scan level, and grus was more vigilant than nigricollis. Model tests also indicated that group size had common effect on group scan frequency for both species, and distribution area significantly correlated with the vigilance of nigricollis, while grus was more affected by time of day and group composition status in areas of sympatry with nigricollis. But when nigricollis was absent, time had no effects on behavior by individuals belonging to grus, implying existence of inter-specific competition. We also found that grus decreased individual vigilance efforts by foraging with other species (e.g., Bar-headed Goose Anser indicus) to share large group alertness benefits (collective vigilance). As our results demonstrated, we argued that, with diverse antipredation tactics e.g., foraging with other species, alternating time rhythm or partitioning spatial utilization to mitigate inter-specific competition, reducing time allocation to preening while maintaining foraging efforts, common grus could maintain high level of vigilance, which may benefit their survival and population increase. Whereas less time spent vigilant antipredation strategy adopted by threatened nigricollis, this may have negative effects on their populations.
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/12766
专题	科研部门_鸟类学（杨晓君）
推荐引用方式 GB/T 7714	Kong, Dejun,Luo, Weixiong,Moller, Anders Pape,et al. Vigilance strategy differentiation between sympatric threatened and common crane species[J]. BEHAVIOURAL PROCESSES,2020,176.
APA	Kong, Dejun,Luo, Weixiong,Moller, Anders Pape,Zhang, Yanyun,&Yang, Xiaojun.(2020).Vigilance strategy differentiation between sympatric threatened and common crane species.BEHAVIOURAL PROCESSES,176.
MLA	Kong, Dejun,et al."Vigilance strategy differentiation between sympatric threatened and common crane species".BEHAVIOURAL PROCESSES 176(2020).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
2021110105.pdf（3012KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	请求全文