Arid
DOI10.1139/cjz-2017-0246
Resource partitioning between kit foxes (Vulpes macrotis) and coyotes (Canis latrans): a comparison of historical and contemporary dietary overlap
Byerly, P. A.1,5; Lonsinger, R. C.2; Gese, E. M.3; Kozlowski, A. J.4; Waits, L. P.1
通讯作者Lonsinger, R. C.
来源期刊CANADIAN JOURNAL OF ZOOLOGY
ISSN0008-4301
EISSN1480-3283
出版年2018
卷号96期号:5页码:497-504
英文摘要

Range expansions by generalists can alter communities and introduce competitive pressures on native species. In the Great Basin Desert, USA, coyotes (Canis latrans Say, 1823) have colonized and are now sympatric with native kit foxes (Vulpes macrotis Merriam, 1888). Since both species have similar diets, dietary partitioning may facilitate coexistence. We analyzed coyote and kit fox diets, then compared our results to an earlier study. Because populations are dynamic, we expected that decreases in prey or increases in predator abundance could alter dietary patterns. We found no significant changes in population-level prey diversity for kit foxes or coyotes, but found high levels of dietary overlap between species. We did detect a significant decrease in the relative importance of leporids (family Leporidae) in the diets of both canids, but they remained important for coyotes. The relative importance of small mammals was greater for kit foxes than coyotes, but their importance had not changed significantly over time. We detected significant declines in prey diversity per sample (scat-level dietary diversity) for both canids, suggesting that during a foraging event, individuals may encounter less diverse prey now than historically. These findings suggested that kit foxes and coyotes were not limited by prey, despite high dietary overlap.


英文关键词Canis latrans competition coyote diet intraguild predation kit fox Vulpes macrotis
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000431763300014
WOS关键词GREAT-BASIN DESERT ; SWIFT FOXES ; INTRAGUILD PREDATION ; CLIMATE-CHANGE ; NICHE OVERLAP ; SOUTH-AFRICA ; CARNIVORES ; COMMUNITIES ; COMPETITION ; ECOLOGY
WOS类目Zoology
WOS研究方向Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208294
作者单位1.Univ Idaho, Dept Fish & Wildlife Sci, Moscow, ID 83844 USA;
2.Univ Wisconsin, Coll Nat Resources, 800 Reserve St, Stevens Point, WI 54481 USA;
3.Utah State Univ, USDA, Wildlife Serv, Natl Wildlife Res Ctr,Dept Wildland Resources, Logan, UT 84322 USA;
4.Natl Pk Serv, Northeast Temperate Network Inventory & Monitorin, Woodstock, VT 05091 USA;
5.Univ Louisiana Lafayette, Dept Biol, Lafayette, LA 70503 USA
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Byerly, P. A.,Lonsinger, R. C.,Gese, E. M.,et al. Resource partitioning between kit foxes (Vulpes macrotis) and coyotes (Canis latrans): a comparison of historical and contemporary dietary overlap[J],2018,96(5):497-504.
APA Byerly, P. A.,Lonsinger, R. C.,Gese, E. M.,Kozlowski, A. J.,&Waits, L. P..(2018).Resource partitioning between kit foxes (Vulpes macrotis) and coyotes (Canis latrans): a comparison of historical and contemporary dietary overlap.CANADIAN JOURNAL OF ZOOLOGY,96(5),497-504.
MLA Byerly, P. A.,et al."Resource partitioning between kit foxes (Vulpes macrotis) and coyotes (Canis latrans): a comparison of historical and contemporary dietary overlap".CANADIAN JOURNAL OF ZOOLOGY 96.5(2018):497-504.
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