Ryan Calsbeek

Summary

Affiliation: Dartmouth Medical School
Country: USA

Publications

  1. pmc Uncoupling direct and indirect components of female choice in the wild
    Ryan Calsbeek
    Institute of the Environment, 1609 Hershey Hall, University of California, Los Angeles 90095 1606, USA
    Proc Natl Acad Sci U S A 99:14897-902. 2002
  2. pmc Invasive predators deplete genetic diversity of island lizards
    Amandine Gasc
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, United States of America
    PLoS ONE 5:e12061. 2010
  3. doi request reprint An experimental test of the role of predators in the maintenance of a genetically based polymorphism
    R Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    J Evol Biol 25:2091-101. 2012
  4. pmc Predator mediated selection and the impact of developmental stage on viability in wood frog tadpoles (Rana sylvatica)
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    BMC Evol Biol 11:353. 2011
  5. doi request reprint Differential fitness effects of immunocompetence and neighbourhood density in alternative female lizard morphs
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    J Anim Ecol 77:103-9. 2008
  6. doi request reprint Postcopulatory fertilization bias as a form of cryptic sexual selection
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    Evolution 62:1137-48. 2008
  7. doi request reprint Experimental evidence that competition and habitat use shape the individual fitness surface
    R Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    J Evol Biol 22:97-108. 2009
  8. pmc Parallel shifts in ecology and natural selection in an island lizard
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    BMC Evol Biol 9:3. 2009
  9. doi request reprint Sex-specific adult dispersal and its selective consequences in the brown anole, Anolis sagrei
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    J Anim Ecol 78:617-24. 2009
  10. doi request reprint Geographic variation, frequency-dependent selection, and the maintenance of a female-limited polymorphism
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Evolution 64:116-25. 2010

Detail Information

Publications28

  1. pmc Uncoupling direct and indirect components of female choice in the wild
    Ryan Calsbeek
    Institute of the Environment, 1609 Hershey Hall, University of California, Los Angeles 90095 1606, USA
    Proc Natl Acad Sci U S A 99:14897-902. 2002
    ..Females used sperm from large sires to produce sons and sperm from small sires to produce daughters. Differential allocation of resources and progeny sex was adaptive and demonstrates a high degree of female control in the mating system...
  2. pmc Invasive predators deplete genetic diversity of island lizards
    Amandine Gasc
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, United States of America
    PLoS ONE 5:e12061. 2010
    ..Our results provide partial support for the hypothesis that invasive predators can impact the genetic diversity of resident island populations...
  3. doi request reprint An experimental test of the role of predators in the maintenance of a genetically based polymorphism
    R Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    J Evol Biol 25:2091-101. 2012
    ..These results provide limited evidence that predation may play a role in maintaining this polymorphism, although the functional traits that could account for differential susceptibility to predation remain unclear...
  4. pmc Predator mediated selection and the impact of developmental stage on viability in wood frog tadpoles (Rana sylvatica)
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    BMC Evol Biol 11:353. 2011
    ..We reared tadpoles in replicated mesocosms in the presence of the larval odonate Anax junius, a known tadpole predator...
  5. doi request reprint Differential fitness effects of immunocompetence and neighbourhood density in alternative female lizard morphs
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    J Anim Ecol 77:103-9. 2008
    ..5. We discuss the possibility that morph-specific investments in life-history traits may lead to correlational selection between traits, even when those traits are likely to be determined by different genetic loci...
  6. doi request reprint Postcopulatory fertilization bias as a form of cryptic sexual selection
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    Evolution 62:1137-48. 2008
    ..Our results suggest that intralocus sexual conflict may be at least partly resolved through post-copulatory sperm choice in A. sagrei...
  7. doi request reprint Experimental evidence that competition and habitat use shape the individual fitness surface
    R Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    J Evol Biol 22:97-108. 2009
    ..Results provide empirical support for the long-standing hypothesis that density-dependent natural selection shapes the fitness surface of Greater Antilles anoles...
  8. pmc Parallel shifts in ecology and natural selection in an island lizard
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    BMC Evol Biol 9:3. 2009
    ....
  9. doi request reprint Sex-specific adult dispersal and its selective consequences in the brown anole, Anolis sagrei
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    J Anim Ecol 78:617-24. 2009
    ..Although smaller males were the more likely to disperse, these males paid a high cost in terms of viability indicating that dispersal is a potentially risky strategy...
  10. doi request reprint Geographic variation, frequency-dependent selection, and the maintenance of a female-limited polymorphism
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Evolution 64:116-25. 2010
    ..We propose that this polymorphism is maintained by temporal variation in selection coupled with the sheltering of alleles via a two-locus inheritance pattern and sex-limited expression...
  11. doi request reprint Experimentally assessing the relative importance of predation and competition as agents of selection
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Nature 465:613-6. 2010
    ..Our results from A. sagrei are consistent with the hypothesis that intraspecific competition is more important than predation in shaping the selective landscape for traits central to the adaptive radiation of Anolis ecomorphs...
  12. ncbi request reprint Experimentally replicated disruptive selection on performance traits in a Caribbean lizard
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Evolution 62:478-84. 2008
    ..Our results provide evidence for the short-term repeatability of selection and its potency in the diversification of anoles...
  13. ncbi request reprint The quick and the dead: correlational selection on morphology, performance, and habitat use in island lizards
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Evolution 61:2493-503. 2007
    ....
  14. ncbi request reprint Correlational selection on lay date and life-history traits: experimental manipulations of territory and nest site quality
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Evolution 61:1071-83. 2007
    ..Results indicate the influence of environmental variation on correlational selection on life-history traits...
  15. ncbi request reprint Probing the adaptive landscape using experimental islands: density-dependent natural selection on lizard body size
    Ryan Calsbeek
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Evolution 61:1052-61. 2007
    ..55) indicating that selection in the wild could have an evolutionary response. Our results suggest an important effect of population density on natural selection in Anolis lizards...
  16. doi request reprint Cryptic sex-ratio bias provides indirect genetic benefits despite sexual conflict
    Robert M Cox
    Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
    Science 328:92-4. 2010
    ..These results illustrate how the resolution of sexual conflict can restore the genetic benefits of mate choice...
  17. doi request reprint Sex-specific selection and intraspecific variation in sexual size dimorphism
    Robert M Cox
    Dartmouth College, Biological Sciences, 401 Gilman Hall, Hanover, New Hampshire 03755, USA
    Evolution 64:798-809. 2010
    ..We propose that this energetic constraint disproportionately impacts growth of males due to their greater absolute energy requirements, thus driving intraspecific variation in SSD...
  18. doi request reprint Manipulating testosterone to assess links between behavior, morphology, and performance in the Brown Anole Anolis sagrei
    Robert M Cox
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Physiol Biochem Zool 82:686-98. 2009
    ..Overall, our results demonstrate that testosterone can exert pleiotropic effects on a variety of morphological, physiological, behavioral, and performance traits that are known to influence survival and reproductive success...
  19. ncbi request reprint Corticosterone, locomotor performance, and metabolism in side-blotched lizards (Uta stansburiana)
    Donald B Miles
    Department of Biological Sciences, Ohio University, Athens, OH 45701, USA
    Horm Behav 51:548-54. 2007
    ..Furthermore, stressed lizards are characterized by lower resting metabolic rates, which may serve as strategy to conserve energy stores and enhance survival...
  20. doi request reprint Paternal condition drives progeny sex-ratio bias in a lizard that lacks parental care
    Robert M Cox
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Evolution 65:220-30. 2011
    ..Our results emphasize the importance of considering the paternal phenotype in studies of sex allocation and highlight the need for further research into the pathways that link paternal condition to progeny fitness...
  21. doi request reprint Severe costs of reproduction persist in Anolis lizards despite the evolution of a single-egg clutch
    Robert M Cox
    Department of Biological Sciences, Dartmouth College, 401 Gilman Hall, Hanover, New Hampshire 03755, USA
    Evolution 64:1321-30. 2010
    ..Our results provide clear experimental support for a central tenet of life-history theory and show that costs of reproduction persist in anoles despite the evolution of a single-egg clutch...
  22. doi request reprint Sexually antagonistic selection, sexual dimorphism, and the resolution of intralocus sexual conflict
    Robert M Cox
    Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA
    Am Nat 173:176-87. 2009
    ..Our results suggest that intralocus sexual conflict often may persist despite the evolution of sexual dimorphism...
  23. ncbi request reprint Within-clutch variation in offspring sex determined by differences in sire body size: cryptic mate choice in the wild
    Ryan Calsbeek
    Center for Tropical Research, Institute of the Environment, University of California, Los Angeles, CA 90034, USA
    J Evol Biol 17:464-70. 2004
    ..Our results demonstrate highly refined gender-specific female choice for sperm and indicate that sire body size may signal the quality of sons or daughters that a sire will produce...
  24. ncbi request reprint Genetic and maternal determinants of effective dispersal: the effect of sire genotype and size at birth in side-blotched lizards
    Barry Sinervo
    Department of Ecology and Evolutionary Biology, Earth and Marine Sciences Building A316, University of California, Santa Cruz, CA 95064, USA
    Am Nat 168:88-99. 2006
    ..We discuss the adaptive implications of progeny dispersal in the context of male (rock-paper-scissors) and female strategies (r- and K-density cycle) that are associated with color morphs...
  25. ncbi request reprint Patterns of molecular evolution and diversification in a biodiversity hotspot: the California Floristic Province
    Ryan Calsbeek
    Center for Tropical Research, 1609 Hershey Hall, University of California, Los Angeles, CA 90095, USA
    Mol Ecol 12:1021-9. 2003
    ....
  26. ncbi request reprint Ocean currents mediate evolution in island lizards
    Ryan Calsbeek
    Center for Tropical Research, Institute of the Environment, University of California, Los Angeles, California 90065, USA
    Nature 426:552-5. 2003
    ..Results suggest that over-water dispersal after hurricanes constrains adaptive diversification in Anolis lizards, and that it may have an important but previously undocumented role in this classical example of adaptive radiation...
  27. pmc Self-recognition, color signals, and cycles of greenbeard mutualism and altruism
    Barry Sinervo
    Department of Ecology and Evolutionary Biology, University of California, Earth and Marine Sciences Building, Santa Cruz, CA 95064, USA
    Proc Natl Acad Sci U S A 103:7372-7. 2006
    ..Such cycles provide a mechanism encouraging the origin and stability of true altruism...
  28. pmc Sexual selection and alternative mating behaviours generate demographic stochasticity in small populations
    Ryan Calsbeek
    Department of Biology, Earth and Marine Sciences Building, A316, University of California, Santa Cruz, CA 95064, USA
    Proc Biol Sci 269:157-64. 2002
    ..This coexistence is facilitated by small population size. Our results have general implications for the evolution of alternative strategies and the maintenance of genetic diversity in small populations...