Search Constraints

Start Over
Filtering by: Creator Menzies, David W. Remove constraint Creator: Menzies, David W. Degree Field Integrative Biology Remove constraint Degree Field: Integrative Biology Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

Search Results

  • The evolutionary stability of partial migration

    Creator:
    Ohms, Haley A.
    Abstract:
    Natural selection, in its most basic form, is described as a process in which traitsincrease or decrease in frequency depending on their fitness, and only the trait withthe highest fitness will remain in the population. Yet, populations rarely have asingle `optimal' trait. The way natural selection maintains this observed variationwithin...
    Resource Type:
    Dissertation
    Full Text:
    Evolutionary Stability of Partial Migration Abstract approved: David A. Lytle Natural selection, in its most

  • Phylogenetic Studies in Tenebrionidae (Coleoptera) and Related Families

    Creator:
    Kanda, Kojun
    Abstract:
    In this dissertation, I present the results from three studies: (1) a phylogeny of Tenebrionoidea (Coleoptera) inferred from a seven-gene dataset derived from PCR and Sanger sequencing; (2) a phylogeny of Tenebrionidae, the largest family in Tenebrionoidea, inferred from a four-gene dataset also derived from PCR and Sanger sequencing; (3)...
    Resource Type:
    Dissertation
    Full Text:
    :                       David  R.  Maddison         In   this   dissertation,   I   present   the

  • Trade-offs in a pathogen-rich world : genetic and maternal drivers of variation in costly resistance and immunity in African buffalo (Syncerus caffer)

    Creator:
    Tavalire, Hannah F.
    Abstract:
    Disease acts as a powerful selective force in natural systems, driving the rapid evolution of resistance in the host. In the face of a myriad of pathogenic challenges in natural systems, hosts must balance the energetic needs of maintenance and reproduction with costly resistance mechanisms. In this dissertation I will...
    Resource Type:
    Dissertation
    Full Text:
    lactation. American Zoologist 36, 197-204. Taha, R.A., Kotsimbos, T.C., Song, Y.L., Menzies, D., Hamid

  • The Behavioral Responses of Western Toad (Anaxyrus boreas) Larvae to Simultaneous Stressors

    Creator:
    Reynolds, Emily R.
    Abstract:
    Animals can be naturally exposed simultaneously to multiple stressors. These include habitat changes, contaminants, diseases, invasive species, parasitism, and predation. Exposure to various combinations of biotic and abiotic stressors may induce behavioral changes that affect the way an individual interacts within its environment.Like other groups of organisms, amphibians are exposed...
    Resource Type:
    Masters Thesis
    Full Text:
    Olson, Lindsay Biga, and David Noakes for their helpful advice, support, and comments throughout this