干旱区生态环境知识资源中心(Arid): Cache Pilfering in a Granivore Guild: Implications for Reintroduction Management

Arid

DOI	10.1002/jwmg.21736
	Cache Pilfering in a Granivore Guild: Implications for Reintroduction Management
	Chock, Rachel Y.1,2; Grether, Gregory F.1; Shier, Debra M.1,2
通讯作者	Chock, Rachel Y.
来源期刊	JOURNAL OF WILDLIFE MANAGEMENT
ISSN	0022-541X
EISSN	1937-2817
出版年	2019
卷号	83 期号:7 页码:1607-1616
英文摘要	Reintroduction programs that release endangered species back into areas from which they have been extirpated rarely take competitive interactions between species into account. The endangered Pacific pocket mouse (Perognathus longimembris pacificus) is being reintroduced to parts of its former range where multiple species of native rodents have overlapping diets. The granivorous species in this foraging guild compete for seeds exploitatively and through direct interference interactions, and pocket mice are the smallest and least dominant species in the guild. Repeated aggressive interactions from resident heterospecifics could lower the chances of reintroduced pocket mice establishing burrows during the post-release settlement period. As such, temporarily reducing the density of competing species through exclusionary fencing might be an advisable reintroduction strategy, in combination with other interventions, such as predator exclusion. The presence of other members of the seed-foraging guild, however, could have a net benefit for pocket mice, if the pocket mice pilfer from the other species' seed caches more than the other species pilfer from their caches. To test the frequency of cache pilfering between species, we conducted a field experiment with fluorescent dyed seeds. Two of 10 pocket mice pilfered from heterospecifics, but only 1 of 33 heterospecifics pilfered from pocket mice. In a field-enclosure experiment, we could not conclude that any of the 4 species tested used heterospecific scent to find (or avoid) seed caches, and pocket mice were less efficient in pilfering from artificial caches, recovering fewer seeds than the larger species. We did not find strong evidence that Pacific pocket mice benefit from living in sympatry with larger, dominant species. Although further research is needed to elucidate the relationship between heterospecific density and the prevalence of cache pilfering, a conservative reintroduction approach would be to select receiver sites with low densities of known competitors to benefit pocket mice during the critical post-release establishment phase.
英文关键词	cache pilfering interspecific competition Perognathus longimembris pocket mouse reintroduction biology
类型	Article
语种	英语
国家	USA
开放获取类型	Green Published
收录类别	SCI-E
WOS记录号	WOS:000481132000001
WOS关键词	KANGAROO RATS ; CONSPECIFIC ATTRACTION ; FLUORESCENT PIGMENTS ; RESOURCE UTILIZATION ; DIPODOMYS-MERRIAMI ; HOARDING BEHAVIOR ; DESERT RODENTS ; COEXISTENCE ; ECOLOGY ; HABITAT
WOS类目	Ecology ; Zoology
WOS研究方向	Environmental Sciences & Ecology ; Zoology
来源机构	University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217429
作者单位	1.Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, 612 Charles E Young Dr E, Los Angeles, CA 90095 USA; 2.San Diego Zoo Inst Conservat Res, Recovery Ecol, 15600 San Pasqual Valley Rd, Escondido, CA 92027 USA
推荐引用方式 GB/T 7714	Chock, Rachel Y.,Grether, Gregory F.,Shier, Debra M.. Cache Pilfering in a Granivore Guild: Implications for Reintroduction Management[J]. University of California, Los Angeles,2019,83(7):1607-1616.
APA	Chock, Rachel Y.,Grether, Gregory F.,&Shier, Debra M..(2019).Cache Pilfering in a Granivore Guild: Implications for Reintroduction Management.JOURNAL OF WILDLIFE MANAGEMENT,83(7),1607-1616.
MLA	Chock, Rachel Y.,et al."Cache Pilfering in a Granivore Guild: Implications for Reintroduction Management".JOURNAL OF WILDLIFE MANAGEMENT 83.7(2019):1607-1616.