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DOI	10.1111/1744-7917.13358
	Geographic variation in larval cold tolerance and exposure across the invasion front of a widely established forest insect
	Hafker, Petra; Thompson, Lily M.; Walter, Jonathan A.; Parry, Dylan; Grayson, Kristine L.
发表日期	2024
ISSN	1672-9609
EISSN	1744-7917
英文摘要	Under global climate change, high and low temperature extremes can drive shifts in species distributions. Across the range of a species, thermal tolerance is based on acclimatization, plasticity, and may undergo selection, shaping resilience to temperature stress. In this study, we measured variation in cold temperature tolerance of early instar larvae of an invasive forest insect, Lymantria dispar dispar L. (Lepidoptera: Erebidae), using populations sourced from a range of climates within the current introduced range in the Eastern United States. We tested for population differences in chill coma recovery (CCR) by measuring recovery time following a period of exposure to a nonlethal cold temperature in 2 cold exposure experiments. A 3rd experiment quantified growth responses after CCR to evaluate sublethal effects. Our results indicate that cold tolerance is linked to regional climate, with individuals from populations sourced from colder climates recovering faster from chill coma. While this geographic gradient is seen in many species, detecting this pattern is notable for an introduced species founded from a single point-source introduction. We demonstrate that the cold temperatures used in our experiments occur in nature during cold spells after spring egg hatch, but impacts to growth and survival appear low. We expect that population differences in cold temperature performance manifest more from differences in temperature-dependent growth than acute exposure. Evaluating intraspecific variation in cold tolerance increases our understanding of the role of climatic gradients on the physiology of an invasive species, and contributes to tools for predicting further expansion. The invasion of the spongy moth in North America has resulted in the establishment of this species across a wide range of climates. We conducted a series of experiments to measure larval recovery time following a brief non-lethal chill coma in populations from the invaded range. The results show that northern populations from cooler climates may be more resilient to cold than southern populations. These results are relevant to the spread potential of this forest defoliating species when spring cold snaps occur during the early stages of development. image
英文关键词	chill coma recovery; forest insect; geographic gradient; Lymantria dispar; spring cold spell; thermal performance
语种	英语
WOS研究方向	Entomology
WOS类目	Entomology
WOS记录号	WOS:001189219300001
来源期刊	INSECT SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305422
作者单位	University of Richmond; Cornell University; Clemson University; University of Virginia; State University of New York (SUNY) System; SUNY Community College; State University of New York (SUNY) College of Environmental Science & Forestry; SUNY Delhi; University of Richmond
推荐引用方式 GB/T 7714	Hafker, Petra,Thompson, Lily M.,Walter, Jonathan A.,et al. Geographic variation in larval cold tolerance and exposure across the invasion front of a widely established forest insect[J],2024.
APA	Hafker, Petra,Thompson, Lily M.,Walter, Jonathan A.,Parry, Dylan,&Grayson, Kristine L..(2024).Geographic variation in larval cold tolerance and exposure across the invasion front of a widely established forest insect.INSECT SCIENCE.
MLA	Hafker, Petra,et al."Geographic variation in larval cold tolerance and exposure across the invasion front of a widely established forest insect".INSECT SCIENCE (2024).