Consuming Costly Prey: Optimal Foraging and the Role of Compensatory Growth

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Autor(es): dc.contributorNorth Carolina State University-
Autor(es): dc.contributorAppalachian State University-
Autor(es): dc.contributorUniversity of London-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorWake Forest University-
Autor(es): dc.creatorLangerhans, Randall Brian-
Autor(es): dc.creatorGoins, Taylor R.-
Autor(es): dc.creatorStemp, Kenzi M.-
Autor(es): dc.creatorRiesch, Rüdiger-
Autor(es): dc.creatorAraújo, Márcio S. [UNESP]-
Autor(es): dc.creatorLayman, Craig A.-
Data de aceite: dc.date.accessioned2022-02-22T00:46:14Z-
Data de disponibilização: dc.date.available2022-02-22T00:46:14Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-03-18-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3389/fevo.2020.603387-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/206129-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/206129-
Descrição: dc.descriptionSome prey are exceptionally difficult to digest, and yet even non-specialized animals may consume them—why? Durophagy, the consumption of hard-shelled prey, is thought to require special adaptations for crushing or digesting the hard shells to avoid the many potential costs of this prey type. But many animals lacking specializations nevertheless include hard-bodied prey in their diets. We describe several non-mutually exclusive adaptive mechanisms that could explain such a pattern, and point to optimal foraging and compensatory growth as potentially having widespread importance in explaining costly-prey consumption. We first conducted a literature survey to quantify the regularity with which non-specialized teleost fishes consume hard-shelled prey: stomach-content data from 325 teleost fish species spanning 82 families (57,233 stomach samples) demonstrated that non-specialized species comprise ~75% of the total species exhibiting durophagy, commonly consuming hard-shelled prey at low to moderate levels (~10–40% as much as specialists). We then performed a diet survey to assess the frequency of molluscivory across the native latitudinal range of a small livebearing fish, Gambusia holbrooki, lacking durophagy specializations. Molluscivory was regionally widespread, spanning their entire native latitudinal range (>14° latitude). Third, we tested for a higher frequency of molluscivory under conditions of higher intraspecific resource competition in Bahamian mosquitofish (Gambusia spp.). Examining over 5,300 individuals, we found that molluscivory was more common in populations with higher population density, suggesting that food limitation is important in eliciting molluscivory. Finally, we experimentally tested in G. holbrooki whether molluscivory reduces growth rate and whether compensatory growth follows a period of molluscivory. We found that consumption of hard-shelled gastropods results in significantly reduced growth rate, but compensatory growth following prior snail consumption can quickly mitigate growth costs. Our results suggest that the widespread phenomenon of costly-prey consumption may be partially explained by its relative benefits when few alternative prey options exist, combined with compensatory growth that alleviates temporary costs.-
Descrição: dc.descriptionDepartment of Biological Sciences W. M. Keck Center for Behavioral Biology North Carolina State University-
Descrição: dc.descriptionDepartment of Biology Appalachian State University-
Descrição: dc.descriptionDepartment of Biological Sciences Centre for Ecology Evolution and Behaviour Royal Holloway University of London-
Descrição: dc.descriptionInstituto de Biociências Universidade Estadual Paulista (UNESP)-
Descrição: dc.descriptionDepartment of Applied Ecology North Carolina State University-
Descrição: dc.descriptionDepartment of Biology Center for Energy Environment and Sustainability Wake Forest University-
Descrição: dc.descriptionInstituto de Biociências Universidade Estadual Paulista (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationFrontiers in Ecology and Evolution-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectdurophagy-
Palavras-chave: dc.subjectfood web-
Palavras-chave: dc.subjectgrowth compensation-
Palavras-chave: dc.subjectniche partitioning-
Palavras-chave: dc.subjectpredator-prey interactions-
Palavras-chave: dc.subjectprey choice-
Palavras-chave: dc.subjectresource competition-
Palavras-chave: dc.subjecttrophic ecology-
Título: dc.titleConsuming Costly Prey: Optimal Foraging and the Role of Compensatory Growth-
Tipo de arquivo: dc.typelivro digital-
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