Does maternal stress influence winter survival of offspring in root voles Microtus oeconomus? A field experiment

NWIPB OpenIR

	Does maternal stress influence winter survival of offspring in root voles Microtus oeconomus? A field experiment
	Bian, Jiang-hui 1; Wu, Yan 2; Getz, Lowell L.3; Cao, Yi-Fan 1; Chen, Fang 2; Yang, Le 1
	2011
发表期刊	OIKOS
ISSN	0030-1299
卷号	120 期号:1 页码:47-56
文章类型	Article
摘要	Maternal stress can have long-term adverse consequences on immunocompetence and disease risk of offspring, and winter survival is a crucial demographic parameter in the life-history of an individual that can substantially affect northern rodent population dynamics. An understanding of the effects of maternal stress on winter survival of offspring may help identify mechanisms driving population fluctuations of northern small mammals. Thus, we assessed the effects of maternal stress, resulting from high population densities, on winter survival of first generation (F(1)) and second generation (F(2)) in root voles Microtus oeconomus. Replicate high- and low-density enclosed parental populations were established, from which we obtained F(1) generation that were used to establish new enclosed, equal-density populations. The adults of the high-density parental populations had higher corticosterone levels, an indication of physiological stress, than did those of the low-density parental populations. Over-winter survival of the F(1) generation voles from the low-density parental populations was greater than that of those from the high-density parental populations. Over-winter survival of F(2) generation voles did not differ between the two treatments. Our results suggest that maternal stress affected over-winter survival of first generations but not second generations. Reduced immunocompetence, resulting from high population density stresses, transferred to offspring may be a factor in annual (winter) population declines. Because the effect is transitory, i.e. immunocompetence of F(2) voles is not affected, reduced immunocompetence resulting from high density stresses would not contribute to lengthy periods of low population densities that are characteristic of multi-annual population fluctuations.; Maternal stress can have long-term adverse consequences on immunocompetence and disease risk of offspring, and winter survival is a crucial demographic parameter in the life-history of an individual that can substantially affect northern rodent population dynamics. An understanding of the effects of maternal stress on winter survival of offspring may help identify mechanisms driving population fluctuations of northern small mammals. Thus, we assessed the effects of maternal stress, resulting from high population densities, on winter survival of first generation (F-1) and second generation (F-2) in root voles Microtus oeconomus. Replicate high- and low-density enclosed parental populations were established, from which we obtained F-1 generation that were used to establish new enclosed, equal-density populations. The adults of the high-density parental populations had higher corticosterone levels, an indication of physiological stress, than did those of the low-density parental populations. Over-winter survival of the F-1 generation voles from the low-density parental populations was greater than that of those from the high-density parental populations. Over-winter survival of F-2 generation voles did not differ between the two treatments. Our results suggest that maternal stress affected over-winter survival of first generations but not second generations. Reduced immunocompetence, resulting from high population density stresses, transferred to offspring may be a factor in annual (winter) population declines. Because the effect is transitory, i.e. immunocompetence of F-2 voles is not affected, reduced immunocompetence resulting from high density stresses would not contribute to lengthy periods of low population densities that are characteristic of multi-annual population fluctuations.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	PRENATAL STRESS ; IMMUNE FUNCTION ; POPULATION-DYNAMICS ; MARKED ANIMALS ; SMALL MAMMALS ; REPRODUCTION ; BEHAVIOR ; MICE ; RAT ; IMMUNOCOMPETENCE
收录类别	SCI
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000285388800006
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1596
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, NW Inst Plateau Biol, CN-810001 Xining, Peoples R China 2.Hangzhou Normal Univ, Sch Life & Environm Sci, CN-310012 Hangzhou, Zhejiang, Peoples R China 3.Univ Illinois, Dept Anim Biol, Urbana, IL 61801 USA
推荐引用方式 GB/T 7714	Bian, Jiang-hui,Wu, Yan,Getz, Lowell L.,et al. Does maternal stress influence winter survival of offspring in root voles Microtus oeconomus? A field experiment[J]. OIKOS,2011,120(1):47-56.
APA	Bian, Jiang-hui,Wu, Yan,Getz, Lowell L.,Cao, Yi-Fan,Chen, Fang,&Yang, Le.(2011).Does maternal stress influence winter survival of offspring in root voles Microtus oeconomus? A field experiment.OIKOS,120(1),47-56.
MLA	Bian, Jiang-hui,et al."Does maternal stress influence winter survival of offspring in root voles Microtus oeconomus? A field experiment".OIKOS 120.1(2011):47-56.