Resource pulses shape seasonal and individual variation in the diet of an omnivorous carnivore.
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| Title: | Resource pulses shape seasonal and individual variation in the diet of an omnivorous carnivore. |
|---|---|
| Authors: | Jensen, Alex J.1,2 (AUTHOR), Muthersbaugh, Michael1 (AUTHOR), Ruth, Charles R.3 (AUTHOR), Butfiloski, Joseph W.3 (AUTHOR), Cantrell, Jay3 (AUTHOR), Adams, Jennifer4 (AUTHOR), Waits, Lisette4 (AUTHOR), Kilgo, John C.5 (AUTHOR), Jachowski, David S.1 (AUTHOR) djachow@clemson.edu |
| Source: | Ecology & Evolution (20457758). Jul2024, Vol. 14 Issue 7, p1-15. 15p. |
| Subject Terms: | *Resource availability (Ecology), *Biotic communities, Top predators, Coyote, Diet |
| Abstract: | 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. [ABSTRACT FROM AUTHOR] |
| Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
| FullText | Text: Availability: 0 |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 178738132 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Resource pulses shape seasonal and individual variation in the diet of an omnivorous carnivore. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jensen%2C+Alex+J%2E%22">Jensen, Alex J.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Muthersbaugh%2C+Michael%22">Muthersbaugh, Michael</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ruth%2C+Charles+R%2E%22">Ruth, Charles R.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Butfiloski%2C+Joseph+W%2E%22">Butfiloski, Joseph W.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cantrell%2C+Jay%22">Cantrell, Jay</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adams%2C+Jennifer%22">Adams, Jennifer</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Waits%2C+Lisette%22">Waits, Lisette</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kilgo%2C+John+C%2E%22">Kilgo, John C.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jachowski%2C+David+S%2E%22">Jachowski, David S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> djachow@clemson.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ecology+%26+Evolution+%2820457758%29%22">Ecology & Evolution (20457758)</searchLink>. Jul2024, Vol. 14 Issue 7, p1-15. 15p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Resource+availability+%28Ecology%29%22">Resource availability (Ecology)</searchLink><br />*<searchLink fieldCode="DE" term="%22Biotic+communities%22">Biotic communities</searchLink><br /><searchLink fieldCode="DE" term="%22Top+predators%22">Top predators</searchLink><br /><searchLink fieldCode="DE" term="%22Coyote%22">Coyote</searchLink><br /><searchLink fieldCode="DE" term="%22Diet%22">Diet</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: 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. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/ece3.11632 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 1 Subjects: – SubjectFull: Resource availability (Ecology) Type: general – SubjectFull: Biotic communities Type: general – SubjectFull: Top predators Type: general – SubjectFull: Coyote Type: general – SubjectFull: Diet Type: general Titles: – TitleFull: Resource pulses shape seasonal and individual variation in the diet of an omnivorous carnivore. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jensen, Alex J. – PersonEntity: Name: NameFull: Muthersbaugh, Michael – PersonEntity: Name: NameFull: Ruth, Charles R. – PersonEntity: Name: NameFull: Butfiloski, Joseph W. – PersonEntity: Name: NameFull: Cantrell, Jay – PersonEntity: Name: NameFull: Adams, Jennifer – PersonEntity: Name: NameFull: Waits, Lisette – PersonEntity: Name: NameFull: Kilgo, John C. – PersonEntity: Name: NameFull: Jachowski, David S. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 20457758 Numbering: – Type: volume Value: 14 – Type: issue Value: 7 Titles: – TitleFull: Ecology & Evolution (20457758) Type: main |
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