干旱区生态环境知识资源中心(Arid): Survival and cause-specific mortality of desert bighorn sheep lambs

Arid

DOI	10.1002/jwmg.21597
	Survival and cause-specific mortality of desert bighorn sheep lambs
	Cain, James W., III 1; Karsch, Rebekah C.2,5; Goldstein, Elise J.3; Rominger, Eric M.3; Gould, William R.4
通讯作者	Cain, James W., III
来源期刊	JOURNAL OF WILDLIFE MANAGEMENT
ISSN	0022-541X
EISSN	1937-2817
出版年	2019
卷号	83 期号:2 页码:251-259
英文摘要	Juvenile recruitment in desert bighorn sheep (Ovis canadensis mexicana) is highly variable, yet the mechanisms influencing neonate survival are not well understood. Because few studies have equipped desert bighorn sheep lambs with telemetry collars, definitive data on cause-specific mortality, and lamb survival estimates are lacking. Our objectives were to estimate lamb survival rates and determine cause-specific mortality for desert bighorn sheep lambs during a period of mountain lion (Puma concolor) and coyote (Canis latrans) removal in southwestern New Mexico, USA. We captured pregnant adult females each fall and fitted them with a telemetry collar and a vaginal implant transmitter to aid with neonate captures. We captured and radio-collared 12 desert bighorn sheep lambs in 2012 and 14 in 2013 within 48 hours of parturition in the Peloncillo Mountains, New Mexico. We estimated lamb survival to 6 months of age. Across both years there were 14 mortalities, 12 of which were due to predation. Mountain lions killed 5 lambs (2 in 2012 and 3 in 2013), coyotes killed 4 lambs (all in 2013), a gray fox (Urocyon cinereoargenteus) killed 1 lamb in 2012, and 2 lambs were killed by unknown predators in 2013. Staged-based survival estimates indicated the highest mortality rates occurred in the first week post birth; 5 of 14 lamb mortalities occurred before 7 days of age. Lamb survival to 6 months was substantially lower in 2013 (0.20 +/- 0.11 [SE]) than in 2012 (0.71 +/- 0.14) with the differences in survival attributed to increased coyote predation in 2013. We did not detect differences in body mass at birth between years or differences in body mass, chest girth, or neck circumference at birth between lambs that were killed by predators and those that survived. Coyotes, mountain lions, and the gray fox killed lambs <8 weeks of age, but only mountain lions killed lambs >8 weeks old. Predator removals focused around the parturition period of desert bighorn sheep may be more likely to influence lamb survival rates than removals outside of the lambing season. (c) 2018 The Wildlife Society.
英文关键词	coyote predation desert bighorn sheep juvenile recruitment lamb survival mortality mountain lion predation Ovis canadensis mexicana vaginal-implant transmitter
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000455486900002
WOS关键词	MOUNTAIN LION PREDATION ; POPULATION-DYNAMICS ; TEMPORAL VARIATION ; DEER ; RECRUITMENT ; PRECIPITATION ; WEATHER ; PRODUCTIVITY ; RAINFALL ; DENSITY
WOS类目	Ecology ; Zoology
WOS研究方向	Environmental Sciences & Ecology ; Zoology
来源机构	United States Geological Survey ; New Mexico State University ; E18
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217425
作者单位	1.New Mexico State Univ, US Geol Survey, New Mexico Cooperat Fish & Wildlife Res Unit, Dept Fish Wildlife & Conservat Ecol, POB 30003,MSC 4901, Las Cruces, NM 88033 USA; 2.New Mexico State Univ, Dept Fish Wildlife & Conservat Ecol, POB 30003,MSC 4901, Las Cruces, NM 88003 USA; 3.New Mexico Dept Game & Fish, 1 Wildlife Way, Santa Fe, NM 87507 USA; 4.New Mexico State Univ, Appl Stat Program, POB 30001, Las Cruces, NM 88003 USA; 5.US Forest Serv, Coronado Natl Forest, 300 West Congress St, Tucson, AZ 85701 USA
推荐引用方式 GB/T 7714	Cain, James W., III,Karsch, Rebekah C.,Goldstein, Elise J.,et al. Survival and cause-specific mortality of desert bighorn sheep lambs[J]. United States Geological Survey, New Mexico State University, E18,2019,83(2):251-259.
APA	Cain, James W., III,Karsch, Rebekah C.,Goldstein, Elise J.,Rominger, Eric M.,&Gould, William R..(2019).Survival and cause-specific mortality of desert bighorn sheep lambs.JOURNAL OF WILDLIFE MANAGEMENT,83(2),251-259.
MLA	Cain, James W., III,et al."Survival and cause-specific mortality of desert bighorn sheep lambs".JOURNAL OF WILDLIFE MANAGEMENT 83.2(2019):251-259.