دورية أكاديمية
أعرض في EDS

Marine subsidy promotes spatial and dietary niche variation in an omnivore, the Keen's mouse ( Peromyscus keeni ).

التفاصيل البيبلوغرافية
العنوان: Marine subsidy promotes spatial and dietary niche variation in an omnivore, the Keen's mouse ( Peromyscus keeni ).
المؤلفون: Davidson KH; Department of Geography University of Victoria Victoria British Columbia Canada.; Hakai Institute Heriot Bay British Columbia Canada., Starzomski BM; Hakai Institute Heriot Bay British Columbia Canada.; School of Environmental Studies University of Victoria Victoria British Columbia Canada., El-Sabaawi R; Department of Biology University of Victoria Victoria British Columbia Canada., Hocking MD; School of Environmental Studies University of Victoria Victoria British Columbia Canada.; Ecofish Research Ltd. Victoria British Columbia Canada., Reynolds JD; Hakai Institute Heriot Bay British Columbia Canada.; Department of Biological Sciences Simon Fraser University Burnaby British Columbia Canada., Wickham SB; Hakai Institute Heriot Bay British Columbia Canada.; School of Environmental Studies University of Victoria Victoria British Columbia Canada.; Present address: School of Environment, Resources and Sustainability University of Waterloo Waterloo Ontario Canada., Darimont CT; Department of Geography University of Victoria Victoria British Columbia Canada.; Hakai Institute Heriot Bay British Columbia Canada.; Raincoast Conservation Foundation Sidney British Columbia Canada.
المصدر: Ecology and evolution [Ecol Evol] 2021 Dec 06; Vol. 11 (24), pp. 17700-17722. Date of Electronic Publication: 2021 Dec 06 (Print Publication: 2021).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Blackwell Pub. Ltd Country of Publication: England NLM ID: 101566408 Publication Model: eCollection Cited Medium: Print ISSN: 2045-7758 (Print) Linking ISSN: 20457758 NLM ISO Abbreviation: Ecol Evol Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: [Oxford] : Blackwell Pub. Ltd.
مستخلص: Marine-derived resource subsidies can generate intrapopulation variation in the behaviors and diets of terrestrial consumers. How omnivores respond, given their multiple trophic interactions, is not well understood. We sampled mice ( Peromyscus keeni ) and their food sources at five sites on three islands of the Central Coast of British Columbia, Canada, to test predictions regarding variation in the spatial behavior and consumption of marine-subsidized foods among individuals. About 50% of detections ( n  = 27 recaptures) occurred at traps closest to shoreline (25 m), with capture frequencies declining significantly inland (up to 200 m). Stable isotope signatures ( δ 13 C and δ 15 N), particularly δ 15 N, in plant foods, forest arthropod prey, and mouse feces were significantly enriched near shorelines compared with inland, while δ 13 C patterns were more variable. Bayesian isotope mixing models applied to isotope values in mouse hair indicated that over one-third (35-37%) of diet was comprised of beach-dwelling arthropods, a marine-derived food source. Males were more abundant near the shoreline than females and consumed more marine-derived prey, regardless of reproductive status or availability of other food sources. Our results identify how multiple pathways of marine nutrient transfer can subsidize terrestrial omnivores and how subsets of recipient populations can show variation in spatial and dietary response.
Competing Interests: The authors listed do not declare any conflict of interest.
(© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
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فهرسة مساهمة: Keywords: Keen's mouse; Peromyscus keeni; allochthonous; individual niche; islands; resource pulses; stable isotopes; wrack
تواريخ الأحداث: Date Created: 20220110 Latest Revision: 20240405
رمز التحديث: 20240405
مُعرف محوري في PubMed: PMC8717356
DOI: 10.1002/ece3.8225
PMID: 35003633
قاعدة البيانات: MEDLINE
الوصف
تدمد:2045-7758
DOI:10.1002/ece3.8225