气候变化领域集成服务门户(CCPortal): Warming, but not infection with Borrelia burgdorferi , increases off-host winter activity in the ectoparasite, Ixodes scapularis

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DOI	10.1016/j.jtherbio.2024.103853
	Warming, but not infection with Borrelia burgdorferi , increases off-host winter activity in the ectoparasite, Ixodes scapularis
	Ferguson, Laura V.; El Nabbout, Amal; Adamo, Shelley A.
发表日期	2024
ISSN	0306-4565
EISSN	1879-0992
起始页码	121
卷号	121
英文摘要	Warming winters will change patterns of behaviour in temperate and polar arthropods, but we know little about the drivers of winter activity in animals such as ticks. Any changes in behaviour are likely to arise from a combination of both abiotic (e.g. temperature) and biotic (e.g. infection) drivers, and will have important consequences for survival and species interactions. Blacklegged ticks, Ixodes scapularis, have invaded Atlantic Canada and high proportions (30-50%) are infected with the bacteria causing Lyme disease, Borrelia burgdorferi. Infection is correlated with increased overwintering survival of adult females, and ticks are increasingly active in the winter, but it is unclear if infection is associated with activity. Further, we know little about how temperature drives the frequency of winter activity. Here, we exposed wild-caught, adult, female Ixodes scapularis ticks to three different winter temperature regimes (constant low temperatures, increased warming, and increased warming + variability) to determine the thermal and infection conditions that promote or suppress activity. We used automated behaviour monitors to track daily activity in individual ticks and repeated the study with fresh ticks over three years. Following exposure to winter conditions we determined whether ticks were infected with the bacteria B. burgdorferi and if infection was responsible for any patterns in winter activity. Warming conditions promoted increased activity throughout the overwintering period but infection with B. burgdorferi had no impact on the frequency or overall number of ticks active throughout the winter. Individual ticks varied in their levels of activity throughout the winter, such that some were largely dormant for several weeks, while others were active almost daily; however, we do not yet know the drivers behind this individual variation in behaviour. Overall, warming winters will heighten the risk of tick-host encounters.
英文关键词	Cold; Climate change; Tick; Behaviour
语种	英语
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Zoology
WOS类目	Biology ; Zoology
WOS记录号	WOS:001230241800001
来源期刊	JOURNAL OF THERMAL BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302479
作者单位	Dalhousie University; Acadia University
推荐引用方式 GB/T 7714	Ferguson, Laura V.,El Nabbout, Amal,Adamo, Shelley A.. Warming, but not infection with Borrelia burgdorferi , increases off-host winter activity in the ectoparasite, Ixodes scapularis[J],2024,121.
APA	Ferguson, Laura V.,El Nabbout, Amal,&Adamo, Shelley A..(2024).Warming, but not infection with Borrelia burgdorferi , increases off-host winter activity in the ectoparasite, Ixodes scapularis.JOURNAL OF THERMAL BIOLOGY,121.
MLA	Ferguson, Laura V.,et al."Warming, but not infection with Borrelia burgdorferi , increases off-host winter activity in the ectoparasite, Ixodes scapularis".JOURNAL OF THERMAL BIOLOGY 121(2024).