@misc{giery_layman_2019, title={Ecological Consequences Of Sexually Selected Traits: An Eco-Evolutionary Perspective}, volume={94}, ISSN={["1539-7718"]}, DOI={10.1086/702341}, abstractNote={Evolution is rapidly gaining attention as an important driver of ecological process. Yet, evolution via sexual selection has generally been omitted from this emerging synthesis. Our goal in this paper is to illustrate causative links by which sexually selected traits affect fundamental ecological interactions and processes. We summarize evidence, primarily from vertebrate studies under field conditions, which shows: sexually selected traits have ecological effects; and that their evolution has diverse influences on ecological systems. We conclude with a brief discussion of future research directions to encourage study of sexual selection from a more integrative and eco-evolutionary perspective.}, number={1}, journal={QUARTERLY REVIEW OF BIOLOGY}, author={Giery, Sean T. and Layman, Craig A.}, year={2019}, month={Mar}, pages={29–74} } @article{rossi_giery_bonnema_todd_layman_2017, title={Characterizing trophic ecology of the checkered puffer (Sphoeroides testudineus)}, volume={45}, ISSN={["0717-7178"]}, DOI={10.3856/vol45-issue5-fulltext-24}, abstractNote={Sphoeroides testudineus (Linnaeus, 1758), is a common, widely distributed fish in coastal ecosystems. To better understand the trophic niche of S. testudineus, we collected individuals from tidal creeks on Abaco Island, The Bahamas, and employed stomach content and stable isotope analysis. Examination of stomach contents showed that mollusks, such as West Indian false cerith snails, cerith snails, and tellin clams, were the most common prey items. Diet data were consistent with stable isotopes data such that S. testudineus seem to feed at an intermediate trophic position in the food web. These preliminary data suggest that S. testudineus may be a critical intermediate link in these wetland food webs, serving as pathways through which energy is transferred from primary consumers to other predator species.}, number={5}, journal={LATIN AMERICAN JOURNAL OF AQUATIC RESEARCH}, author={Rossi, Ryann E. and Giery, Sean T. and Bonnema, Erika W. and Todd, Allison L. and Layman, Craig A.}, year={2017}, month={Nov}, pages={1075–1078} } @article{giery_layman_2017, title={Dissolved organic carbon and unimodal variation in sexual signal coloration in mosquitofish: a role for light limitation?}, volume={284}, ISSN={["1471-2954"]}, DOI={10.1098/rspb.2017.0163}, abstractNote={Natural selection plays an important role in the evolution of sexual communication systems. Here, we assess the effect of two well-known selection agents, transmission environment and predation, on interpopulation variation in sexual signals. Our model system is a series of 21 populations of Bahamian mosquitofish subjected to independent variation in optical conditions and predation risk. We show that optically diverse environments, caused by locally variable dissolved organic carbon concentrations, rather than spatial variation in predation, drove divergence in fin coloration (fin redness). We found a unimodal pattern of phenotypic variation along the optical gradient indicating a threshold-type response of visual signals to broad variation in optical conditions. We discuss evolutionary and ecological mechanisms that may drive such a pattern as well as the implications of non-monotonic clines for evolutionary differentiation.}, number={1852}, journal={PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES}, author={Giery, Sean T. and Layman, Craig A.}, year={2017}, month={Apr} } @article{stroud_giery_outerbridge_2017, title={Establishment of Anolis sagrei on Bermuda represents a novel ecological threat to Critically Endangered Bermuda skinks (Plestiodon longirostris)}, volume={19}, ISSN={["1573-1464"]}, DOI={10.1007/s10530-017-1389-1}, number={6}, journal={BIOLOGICAL INVASIONS}, author={Stroud, James T. and Giery, Sean T. and Outerbridge, Mark E.}, year={2017}, month={Jun}, pages={1723–1731} } @article{giery_layman_langerhans_2015, title={Anthropogenic ecosystem fragmentation drives shared and unique patterns of sexual signal divergence among three species of Bahamian mosquitofish}, volume={8}, ISSN={["1752-4571"]}, DOI={10.1111/eva.12275}, abstractNote={Abstract}, number={7}, journal={EVOLUTIONARY APPLICATIONS}, author={Giery, Sean T. and Layman, Craig A. and Langerhans, R. Brian}, year={2015}, month={Aug}, pages={679–691} } @article{giery_layman_2015, title={Interpopulation Variation in a Condition-Dependent Signal: Predation Regime Affects Signal Intensity and Reliability}, volume={186}, ISSN={0003-0147 1537-5323}, url={http://dx.doi.org/10.1086/682068}, DOI={10.1086/682068}, abstractNote={In many models of sexual selection, conspicuous ornaments are preferred by mates because they indicate heritable signaler viability. To function as indicators, ornaments must exhibit a proportional relationship between expression and viability. In cases where the evolutionary interests of signaler and receiver diverge, selection favors exploitative exaggeration by low-viability individuals producing unreliable signals. Theory suggests that the evolutionary stability of such communication systems requires costs that prevent low-viability males from expressing disproportionately intense signals. Therefore, given ecological variation in signaling cost, the reliability of signaling systems will vary concomitantly. In this study, we assess the effect of a variable signal cost, predation, on signal intensity and reliability among 16 populations of Bahamas mosquitofish (Gambusia hubbsi) that use colorful dorsal fins in courtship displays. We found that fin coloration was more intense in low-predation sites and could be used to predict body condition. However, this predictive relationship was apparent only in populations subject to predation risk. We demonstrate an important role for ecological signaling cost in communication and show that ecological heterogeneity drives interpopulation variation in both the intensity and the reliability of a sexual signal.}, number={2}, journal={The American Naturalist}, publisher={University of Chicago Press}, author={Giery, Sean T. and Layman, Craig A.}, year={2015}, month={Aug}, pages={187–195} } @article{lemoine_giery_burkepile_2014, title={Differing nutritional constraints of consumers across ecosystems}, volume={174}, ISSN={["1432-1939"]}, DOI={10.1007/s00442-013-2860-z}, abstractNote={Stoichiometric mismatches between resources and consumers may drive a number of important ecological interactions, such as predation and herbivory. Such mismatches in nitrogen (N) or phosphorus (P) content between resources and consumers have furthered our understanding of consumer behavior and growth patterns in aquatic systems. However, stoichiometric data for multiple consumers from the same community are lacking in terrestrial systems. Here, we present the results of a study designed to characterize nutritional constraints within a terrestrial arthropod community. In order to place our results in a broader context, we compared our data on resource-consumer stoichiometry to those of stream and lake ecosystems. We found that N and P varied among trophic levels, and that high N:P content of herbivores suggests that herbivores might experience strong N-limitation. However, incredibly low P-content of plant foliage leads to potential P-limitation in herbivores that is nearly as strong as potential N-limitation. Moreover, arthropod predators may also be strongly P-limited. In fact, potential nutrient limitation of terrestrial herbivores in our study is similar to nutrient limitation from streams and lakes, suggesting that similar nutritional constraints may be operating across all three study systems. Importantly, our data suggest that consumers in lakes experience a trade-off between N- and P-limitation, while terrestrial consumers experience simultaneous strengthening or weakening of N- and P-limitation. We suggest that P may be overlooked as an important limiting nutrient in terrestrial ecosystems.}, number={4}, journal={OECOLOGIA}, author={Lemoine, Nathan P. and Giery, Sean T. and Burkepile, Deron E.}, year={2014}, month={Apr}, pages={1367–1376} } @article{gallagher_hammerschlag_shiffman_giery_2014, title={Evolved for Extinction: The Cost and Conservation Implications of Specialization in Hammerhead Sharks}, volume={64}, ISSN={["1525-3244"]}, DOI={10.1093/biosci/biu071}, abstractNote={http://bioscience.oxfordjournals.org July 2014 / Vol. 64 No. 7 • BioScience 619 BioScience 64: 619–624. © The Author(s) 2014. Published by Oxford University Press on behalf of the American Institute of Biological Sciences. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com. doi:10.1093/biosci/biu071 Advance Access publication 28 May 2014 Evolved for Extinction: The Cost and Conservation Implications of Specialization in Hammerhead Sharks}, number={7}, journal={BIOSCIENCE}, author={Gallagher, Austin. J. and Hammerschlag, Neil and Shiffman, David S. and Giery, Sean T.}, year={2014}, month={Jul}, pages={619–624} }