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Filtering by: Subject Infertility in animals Remove constraint Subject: Infertility in animals Degree Field Zoology Remove constraint Degree Field: Zoology

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  • Kin recognition in Townsend's chipmunks (Tamias townsendii)

    Creator:
    Fuller, Claire A.
    Abstract:
    Juvenile T. townsendii were tested at 55-62 days of age to determine whether 1) they could distinguish kin from non-kin and 2) whether this ability was based on familiarity or on genetic relatedness. Seventy-three pups were observed in 68 pairwise tests. The frequencies and durations of 8 behaviors as well...
    Resource Type:
    Masters Thesis
    Full Text:
    IN TOWNSEND'S CHIPMUNK, (TAMIAS TOWNSENDII) INTRODUCTION Numerous animal species can discriminate

  • Transmission of "Salmon Poisoning" disease to dogs by Nanophyetus salmincola eggs

    Creator:
    Nyberg, Peter Albert
    Abstract:
    The presence of the etiologic agent of "salmon poisoning" disease, Neorickettsia helminthoeca, was demonstrated in eggs of the trematode vector, Nanophyetus salmincola. Three dogs were given 100,000 and one dog 82,000 ground fluke eggs by intraperitoneal injection. The four animals developed "salmon poisoning" disease and died. One of these dogs...
    Resource Type:
    Dissertation
    Full Text:
    developed in the control dog (D -10) and the animal died 14 days (day 62) after it was given

  • Ecological aspects of kin discriminating behavior with implications of functional value

    Creator:
    Hokit, D. Grant
    Abstract:
    To assess the context dependence of kin discriminating behavior, I examined kin-biased aggregation behavior in tadpoles of R. cascadae in different ecological conditions. I manipulated food distribution, predator presence, thermal heterogeneity, and relatedness in a multifactorial mesocosm experiment. All four factors interacted to influence tadpole dispersion. My results suggest that...
    Resource Type:
    Dissertation
    Full Text:
    Philosophy in Zoology presented on August 18, 1994 . Title: Ecological Aspects of Kin Discriminating

  • Cannibalism in larvae of the long-toed salamander, Ambystoma macrodactylum

    Creator:
    Wildy, Erica Lynn
    Abstract:
    Predator-prey interactions have historically been studied to explain patterns of organization observed in populations and communities. They have also been important in understanding the evolution of antipredator responses in prey and counterstrategies in predators. Despite the breadth of knowledge that exists for heterospecific interactions, relatively few studies have investigated the...
    Resource Type:
    Dissertation
    Full Text:
    widely documented within a diversity of animal groups including amphibians. In this thesis, I offer

  • Courtship-induced changes in female sexual receptivity : a neuroendocrine study in an amphibian

    Creator:
    Propper, Catherine R.
    Abstract:
    This thesis describes studies that investigated 1) the effects of courtship on the neuroendocrine system of female rough-skinned newts, Taricha granulosa, and 2) whether the observed courtship-induced neuroendocrine changes affected female sexual receptivity. Sexual behaviors of female T. granulosa changed dramatically during courtship. Initially, females exhibited unreceptive behaviors to a...
    Resource Type:
    Dissertation

  • Pheromonal mediation of reproductive behavior in the brown tree snake

    Creator:
    Greene, Michael John
    Abstract:
    In animals, reproductive behaviors serve to attract individuals together during the breeding season and to coordinate the behavioral and physiological states of individuals so that mating can successfully occur. In snakes, the various reproductive behaviors including courtship, mating, courtship inhibition, male combat and trailing are mediated primarily by pheromones. Pheromones...
    Resource Type:
    Dissertation
    Full Text:
    bioassay where the experimental animal displays its normal behaviors in response to chemical stimuli taken

  • Chemical signaling and pheromone evolution in plethodontid salamanders

    Creator:
    Palmer, Catherine Anne
    Abstract:
    My dissertation focuses on the evolutionary forces that have shaped the chemical signaling system of plethodontid salamanders. Pheromones mediate two phases of plethodontid reproduction: mate attraction prior to courtship and female persuasion during courtship. Substrate-borne chemical signals are believed to play an important role in mate attraction for these animals....
    Resource Type:
    Dissertation
    Full Text:
    the degree of Doctor of Philosophy in Zoology presented on May 28th, 2004 Title: Chemical Signaling

  • Pheromone mechanisms and behavioral strategies for maximizing courtship success in a terrestrial salamander, Plethodon shermani

    Creator:
    Vaccaro, Elyse A.
    Abstract:
    Darwin devised the evolutionary theory of sexual selection to account for the manifold extravagances of courtship behaviors and displays. Mating interactions represent a major evolutionary process driving the elaboration, vibrancy, and peculiarity of these courtship traits. For my dissertation research, I strived to elucidate the dynamics that constitute the complex...
    Resource Type:
    Dissertation
    Full Text:
    . Endocrinology of animal communication: behavioral. In: Encyclopedia of Neuroscience, pp. 981-989. Oxford

  • Biochemical and behavioral characterization of steroid receptors in neuronal membranes

    Creator:
    Orchinik, Miles
    Resource Type:
    Dissertation
    Full Text:
    receptors in neuronal membranes AN ABSTRACT OF THE THESIS OF Miles Orchinik for the degree of Doctor of

  • Mutual mate choice in a terrestrial salamander, Plethodon shermani, with long-term sperm storage

    Creator:
    Eddy, Sarah L.
    Abstract:
    Sexual selection can influence the mating system of an organism through multiple mechanisms. These mechanisms result in variation in reproductive success among individuals, and include scramble competition, endurance rivalries, contests, mate choice and cryptic choice, and sperm competition. Understanding the mating system of a species requires the identification of which...
    Resource Type:
    Dissertation
    Full Text:
    assess mates have been studied extensively in the animal kingdom. However, previous studies of