2 Works

Data from: Subspecies delineation amid phenotypic, geographic, and genetic discordance in a songbird

Jennifer Walsh, Irby J. Lovette, Virginia Winder, Chris S. Elphick, Brian J. Olsen, W. Gregory Shriver, Adrienne I. Kovach & Gregory Shriver
Understanding the processes that drive divergence within and among species is a long-standing goal in evolutionary biology. Traditional approaches to assessing differentiation rely on phenotypes to identify intra- and interspecific variation, but many species express subtle morphological gradients in which boundaries among forms are unclear. This intraspecific variation may be driven by differential adaptation to local conditions and may thereby reflect the evolutionary potential within a species. Here, we combine genetic and morphological data to...

Data from: Early to rise, early to breed: a role for daily rhythms in seasonal reproduction

Jessica L. Graham, Natalie J. Cook, Katie B. Needham, Michaela Hau & Timothy J. Greives
Vertebrates use environmental cues to time reproduction to optimal breeding conditions. Numerous laboratory studies have revealed that light experienced during a critical window of the circadian (daily) rhythm can influence reproductive physiology. However, whether these relationships observed in captivity hold true under natural conditions and how they relate to observed variation in timing of reproductive output remains largely unexplored. Here we test the hypothesis that individual variation in daily timing recorded in nature (i.e. chronotype)...

Registration Year

  • 2017
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Resource Types

  • Dataset
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Affiliations

  • Benedictine College
    2
  • Max Planck Institute for Ornithology
    1
  • University of Maine
    1
  • University of New Hampshire
    1
  • University of Delaware
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  • University of Connecticut
    1
  • Cornell University
    1
  • North Dakota State University
    1