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Effects of arthropod prey turnover on the chemical traits of poison frogs: a landscape ecology approach to assess the phenotypic consequences of biotic interactions

View ORCID ProfileIvan Prates, View ORCID ProfileAndrea Paz, Jason L. Brown, Ana C. Carnaval
doi: https://doi.org/10.1101/695171
Ivan Prates
Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
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  • For correspondence: ivanprates@gmail.com
Andrea Paz
Department of Biology, City College of New York, and Graduate Center, City University of New York, New York, NY, USA
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Jason L. Brown
Zoology Department, Southern Illinois University, Carbondale, IL, USA
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Ana C. Carnaval
Department of Biology, City College of New York, and Graduate Center, City University of New York, New York, NY, USA
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Abstract

Biotic interactions can promote phenotypic change, yet we have a limited understanding of how phenotypes respond to concomitant interactions with many species. We introduce a framework to investigate how biotic interactions contribute to spatially structured phenotypes and apply it to the drivers of chemical defense variation among populations of the poison frog Oophaga pumilio (Dendrobatidae). Specifically, we assess how beta-diversity of alkaloid-bearing arthropod prey assemblages (based on projected distributions of toxic ant species) and evolutionary divergence among O. pumilio populations (based on a neutral genetic marker) contribute to poison composition variation over the range of these frogs. Under Generalized Dissimilarity Modeling, ant assemblage turnover predicted alkaloid turnover and geographic regions harboring unique toxin combinations in O. pumilio. Evolutionary relatedness between frog populations had a weak effect on poison composition variation based on a Multiple Matrix Regression approach. By leading to spatially structured phenotypes, biotic interactions promote eco-evolutionary feedbacks and functional diversity in ecological communities. The analytical framework proposed here can be extended to other multi-trophic systems, coevolutionary mosaics, microbial assemblages, and ecosystem services.

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  • https://github.com/ivanprates/2019_gh_pumilio

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted July 08, 2019.
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Effects of arthropod prey turnover on the chemical traits of poison frogs: a landscape ecology approach to assess the phenotypic consequences of biotic interactions
Ivan Prates, Andrea Paz, Jason L. Brown, Ana C. Carnaval
bioRxiv 695171; doi: https://doi.org/10.1101/695171
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Effects of arthropod prey turnover on the chemical traits of poison frogs: a landscape ecology approach to assess the phenotypic consequences of biotic interactions
Ivan Prates, Andrea Paz, Jason L. Brown, Ana C. Carnaval
bioRxiv 695171; doi: https://doi.org/10.1101/695171

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