Maternal density stress and coccidian parasitism: Synergistic effects on overwinter survival in root voles

	Maternal density stress and coccidian parasitism: Synergistic effects on overwinter survival in root voles
	Yang, Yan-Bin; Shang, Guo-Zhen; Du, Shou-Yang; Zhang, Xin; Wu, Yan; Bian, Jiang-Hui
刊名	FUNCTIONAL ECOLOGY
	2018
卷号	32 期号:9
关键词	immunocompetence maternal density stress overwinter survival parasitic infection
英文摘要	1. Individuals in poor physiological condition are known to be more susceptible to infection that, once it occurs, further deteriorates the individuals' conditions, making them even more susceptible to infection and leading to death. This vicious synergy between the host condition and infection has recently been proposed to be among the key factors determining the oscillation characteristics in natural populations. Field studies that directly test such a hypothesis, however, are currently scarce, and the physiological traits involved remain largely unclear. 2. In this field study, we systematically examined the synergistic effects of maternal stress and coccidian parasitic interaction on the physiological conditions and overwinter survival of offspring in the root vole (Microtus oeconomus) via repeated live trapping and measurements of faecal corticosterone metabolite (FCM) levels and immunocompetence in captured animals. 3. We found that maternal density stress significantly increased FCM levels and both the prevalence and intensity of coccidian infection in offspring, significantly suppressed offspring immunocompetence and reduced offspring overwinter survival. Coccidian infection significantly potentiated increases in FCM levels and exacerbated the immune suppression induced by maternal density stress. Coccidian infection also significantly accelerated a decrease in overwinter survival and a population decline in maternal-density-stressed populations. 4. Our findings indicate that both stress and immune systems are involved in the synergistic process through which stressors and parasites interact with the host to influence the fitness of individuals and cause a population decline in the natural environment.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/59982]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Yang, Yan-Bin,Shang, Guo-Zhen,Du, Shou-Yang,et al. Maternal density stress and coccidian parasitism: Synergistic effects on overwinter survival in root voles[J]. FUNCTIONAL ECOLOGY,2018,32(9).
APA	Yang, Yan-Bin,Shang, Guo-Zhen,Du, Shou-Yang,Zhang, Xin,Wu, Yan,&Bian, Jiang-Hui.(2018).Maternal density stress and coccidian parasitism: Synergistic effects on overwinter survival in root voles.FUNCTIONAL ECOLOGY,32(9).
MLA	Yang, Yan-Bin,et al."Maternal density stress and coccidian parasitism: Synergistic effects on overwinter survival in root voles".FUNCTIONAL ECOLOGY 32.9(2018).