Index Catalog // ScholarsArchive@OSU

Creator:: Lerner, Darren T.
Abstract:: A wide range of environmental and physiological factors influence the type and extent of sexual dimorphism found in animals. Influential factors include variable climate, competition for resources and mates, mate choice, and parental investment. In addition, some investigators attribute differences in body size to physiological factors influenced by genetic and...
Resource Type:: Masters Thesis
Full Text:: , Frank L. Moore, and Fred Stormshak, the members of my graduate committee, for their contribution

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:: for the results. M. L. Kent assisted with study design and R. T. Mason assisted with animal

Creator:: Tennessen, Jacob A.
Abstract:: In this dissertation I study evolutionary patterns at genes encoding antimicrobial peptides (AMPs) in frogs. AMPs are short, amphipathic, cationic, secreted proteins that kill bacteria and other pathogens through a non-catalytic mechanism that involves binding to and disrupting the microbial cell membrane. In many animal taxa, positive selection is much...
Resource Type:: Dissertation

Creator:: O'Donnell, Ryan P.
Abstract:: The benefits of reproduction are clear, but there are also costs. Much is known about the costs of reproduction in females, but only recently have male costs been investigated in any depth. These costs of reproduction may be minimized by appropriately modifying behavior, but there has been little research on...
Resource Type:: Masters Thesis
Full Text:: of the roadrunner, Geococcyx californianus. Auk 84:597-598. Caley M. J., L. Schwarzkopf, R. Shine

Creator:: LeMaster, Michael P.
Abstract:: Pheromones are chemical cues produced by organisms that affect the behavior and/or physiology of conspecifics. The orchestration of reproductive behaviors in many animals depends on the expression of sex pheromones. In insects, intraspecific variation in sex pheromone expression is commonly observed and often influences social interactions between individuals. To what...
Resource Type:: Dissertation
Full Text:: population of adders, Vipera berus (L.) Amphibia-Reptilia 7:353-383. Attygale, A.B., Schwarz, J., Vostrowsky

Creator:: Friesen, Christopher R.
Abstract:: Postcopulatory sexual selection—sperm competition and cryptic female choice—has become a major area of research over the past 40 years. Within this field there are many outstanding questions at every level of analysis, from proximate to ultimate. The fitness consequences for both sexes in the period after copulation and before fertilization...
Resource Type:: Dissertation
Full Text:: University, housed in 38 L aquariums, given water ad libitum and fed worms (Lumbricus terrestris) or fish

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