دورية أكاديمية
أعرض في EDS

Resource pulses shape seasonal and individual variation in the diet of an omnivorous carnivore.

التفاصيل البيبلوغرافية
العنوان: Resource pulses shape seasonal and individual variation in the diet of an omnivorous carnivore.
المؤلفون: Jensen AJ; Department of Forestry and Environmental Conservation Clemson University Clemson South Carolina USA.; North Carolina Museum of Natural Sciences Raleigh North Carolina USA., Muthersbaugh M; Department of Forestry and Environmental Conservation Clemson University Clemson South Carolina USA., Ruth CR; South Carolina Department of Natural Resources Columbia South Carolina USA., Butfiloski JW; South Carolina Department of Natural Resources Columbia South Carolina USA., Cantrell J; South Carolina Department of Natural Resources Columbia South Carolina USA., Adams J; Department of Fish and Wildlife Sciences University of Idaho Moscow Idaho USA., Waits L; Department of Fish and Wildlife Sciences University of Idaho Moscow Idaho USA., Kilgo JC; United States Forest Service Southern Research Station New Ellenton South Carolina USA., Jachowski DS; Department of Forestry and Environmental Conservation Clemson University Clemson South Carolina USA.
المصدر: Ecology and evolution [Ecol Evol] 2024 Jul 04; Vol. 14 (7), pp. e11632. Date of Electronic Publication: 2024 Jul 04 (Print Publication: 2024).
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: Resource pulses are ecologically important phenomenon that occur in most ecosystems globally. Following optimal foraging theory, many consumers switch to pulsatile foods when available, examples of which include fruit mast and vulnerable young prey. Yet how the availability of resource pulses shapes the ecology of predators is still an emerging area of research; and how much individual variation there is in response to pulses is not well understood. We hypothesized that resource pulses would lead to dietary convergence in our population, which we tested by tracking both population-level and individual coyote diets for 3 years in South Carolina, USA. We (1) described seasonal dietary shifts in relation to resource pulses; (2) compared male and female diets across seasons; and (3) tested this dietary convergence hypothesis by quantifying individual dietary variation both across and within periods when resource pulses were available. We found that pulses of white-tailed deer fawns and blackberries composed over half of coyote diet in summer, and persimmon fruits were an important component in fall. Male and female coyotes generally had similar diets, but males consumed more deer in fall, perhaps driven by scavenging more. We found support for our dietary convergence hypothesis, where individuals had more similar diets during resource pulses compared to a non-pulse period. We also found that this convergence happened before peak availability, suggesting a non-symmetric response to pulse availability. We show that nearly all coyotes eat fawns, suggesting that targeted efforts to remove "fawn killers" would be in vain. Instead, given how quickly coyotes collectively converge on resource pulses, our findings show that resource pulses could potentially be used by managers to alter the behavior of apex predators. More broadly, we open a new line of inquiry into how variation in individual foraging decisions scales up to shape the effects of resource pulses on ecological communities.
Competing Interests: The authors declare no competing interests.
(© 2024 The Author(s). Ecology and Evolution published by John Wiley & Sons Ltd.)
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فهرسة مساهمة: Keywords: consumer; coyote; deer; intraspecific; optimal foraging; resource availability
تواريخ الأحداث: Date Created: 20240705 Latest Revision: 20240706
رمز التحديث: 20240706
مُعرف محوري في PubMed: PMC11222735
DOI: 10.1002/ece3.11632
PMID: 38966241
قاعدة البيانات: MEDLINE
الوصف
تدمد:2045-7758
DOI:10.1002/ece3.11632