气候变化领域集成服务门户(CCPortal): Worth the dip? Polar bear predation on swimming flightless greater snow geese and estimation of energetic efficiency

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DOI	10.1139/AS-2023-0036
	Worth the dip? Polar bear predation on swimming flightless greater snow geese and estimation of energetic efficiency
	Weiss-Blais, Matthieu; Bolduc, David; Corbeil-Robitaille, Madeleine-Zoe; Broin, Frederic Dulude-de; Grandmont, Thierry; Letourneux, Frederic; Poirier, Mathilde; Sarrazin, Denis; Legagneux, Pierre
发表日期	2024
EISSN	2368-7460
起始页码	10
结束页码	1
卷号	10 期号:1
英文摘要	As sea -ice cover is shrinking, polar bears (Ursus maritimus, Phipps, 1774) face decreased access to seals, their primary prey, resulting in a greater dependence on terrestrial food sources. Whether polar bears can benefit from these terrestrial food sources, however, depends on their ability to find and capture prey items without expending more energy than is acquired. Here, we report one of the northernmost observations of polar bear predation on adult birds. The bear used a dive -hunting technique, which consisted of submerging itself, approaching underwater, and catching flightless greater snow geese (Anser caerulescens caerulescens (Linnaeus, 1758)) from beneath the surface of a tundra pond. After evaluating energy expenditures during swimming and energy intakes from consuming geese, we estimated that this rarely documented dive -hunting technique could be energetically profitable for a certain range of pursuit durations. This observation highlights the behavioral plasticity that polar bears can deploy to punctually exploit land -based food sources.
英文关键词	Climate change; Ursus maritimus; Foraging tactics; Energy uptake; Anser caerulescens; Arctic lakes and ponds
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Science & Technology - Other Topics
WOS类目	Ecology ; Environmental Sciences ; Multidisciplinary Sciences
WOS记录号	WOS:001153098800001
来源期刊	ARCTIC SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292435
作者单位	Laval University; Laval University; University of Quebec; Universite du Quebec a Rimouski; University of Quebec; Universite du Quebec a Rimouski; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute of Ecology & Environment (INEE); La Rochelle Universite
推荐引用方式 GB/T 7714	Weiss-Blais, Matthieu,Bolduc, David,Corbeil-Robitaille, Madeleine-Zoe,et al. Worth the dip? Polar bear predation on swimming flightless greater snow geese and estimation of energetic efficiency[J],2024,10(1).
APA	Weiss-Blais, Matthieu.,Bolduc, David.,Corbeil-Robitaille, Madeleine-Zoe.,Broin, Frederic Dulude-de.,Grandmont, Thierry.,...&Legagneux, Pierre.(2024).Worth the dip? Polar bear predation on swimming flightless greater snow geese and estimation of energetic efficiency.ARCTIC SCIENCE,10(1).
MLA	Weiss-Blais, Matthieu,et al."Worth the dip? Polar bear predation on swimming flightless greater snow geese and estimation of energetic efficiency".ARCTIC SCIENCE 10.1(2024).