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Filtering by: Committee Member Schreck, Carl B. Remove constraint Committee Member: Schreck, Carl B. Advisor Mason, Robert T. Remove constraint Advisor: Mason, Robert T. Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • Reproductive implications of parasitic infections and immune challenges in garter snakes

    Creator:
    Uhrig, Emily J.
    Abstract:
    Parasitic infections and immune challenges can affect host reproductive fitness and, ultimately, the evolution of host populations in a myriad of ways. The fitness implications of parasitic infections range from increased host mortality to subtle changes in reproductive investment. From alterations of behaviors, sexual signaling, and competitive ability to changes...
    Resource Type:
    Dissertation
    Full Text:
    (Shine et al. 2000; Shine et al. 2004a; Friesen et al. 2013; Friesen et al. 2014a,b), courtship and

  • Chronobiology of garter snakes : environmental and hormonal mechanisms mediating hibernation and reproduction

    Creator:
    Lutterschmidt, Deborah I.
    Abstract:
    Most vertebrates exhibit seasonality in many life history traits. Such seasonal rhythms are temporally organized via the transduction of environmental cues (e.g., photoperiod, temperature) into appropriate endocrine signals. However, among ectothermic vertebrates that undergo continuous winter dormancy, temperature is the only environmental cue available for synchronizing seasonal rhythms. Most intriguing...
    Resource Type:
    Dissertation
    Full Text:
    , Carl B. Schreck, and Barbara A. Shields – for their academic support and contributions to my

  • Stress and reproduction in male garter snakes

    Creator:
    Moore, Ignacio T.
    Abstract:
    Animals respond to stressful situations with increases in plasma levels of glucocorticoid stress hormones. These hormones originate from the adrenal cortex in response to stimulation of the hypothalamic-pituitary-adrenal axis. Glucocorticoids (corticosterone in reptiles) function to mobilize energy and suppress unnecessary functions until the stress passes. Among these immediately unnecessary functions...
    Resource Type:
    Dissertation
    Full Text:
    , Fred Stormshak, Carl Schreck, and Doug Derrybeny for serving on my committee as well as providing