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Full-Text Articles in Life Sciences
Effects Of Maternal Disease History On Provisioning, Brooding, And Offspring Outcomes, Sakura Roberts
Effects Of Maternal Disease History On Provisioning, Brooding, And Offspring Outcomes, Sakura Roberts
Biological Sciences Undergraduate Honors Theses
Disease within a population has the ability to shape the development, evolution, and general performance of a species. Pathogen exposure to hosts can influence their physiology and behavioral patterns to further shape offspring immunity. Parental conditions experienced by offspring during early development can benefit survival and fitness (e.g. increasing provisioning rates), as well as help deter against similar diseases experienced by parents. By testing if parental behavior changes can better prepare offspring outcomes for disease exposure, such as disease severity or duration of infection, we can see the beneficial impacts it has on disease dynamics and host-pathogen processes. Incubation temperature, …
Examining The Combined Impacts Of Rapid Senescence And A Low Water Stressor On Maternal State, Egg Quality, And Fitness In Chinook Salmon, Madison A. Sturba
Examining The Combined Impacts Of Rapid Senescence And A Low Water Stressor On Maternal State, Egg Quality, And Fitness In Chinook Salmon, Madison A. Sturba
Electronic Theses and Dissertations
Assessing the impact of environmental challenges on maternal state and breeding success is important for predicting how migratory Pacific salmon populations will respond to an increasingly stressful world. The overall goal of my thesis was to examine fine-scale senescent changes in female Chinook salmon over time, whether these changes impacted ovulation and egg quality, and whether exposure to an environmental challenge (low water) during senescence subsequently provoked even stronger state-dependent responses to ultimately impact female longevity and egg survival. Following an experimental decrease in water availability, I quantified changes in physical, physiological, and reproductive maternal state, then linked these changes …
Genetic Relatedness Can Alter The Strength Of Plant-Soil Feedbacks, Kelly M. Clark
Genetic Relatedness Can Alter The Strength Of Plant-Soil Feedbacks, Kelly M. Clark
Masters Theses
Intraspecific variation may play a key role in understanding the relationships between plants and their interactions with soil microbial communities. The effects that soil-microbes have on individuals can venerate variation across individuals in their responsiveness. I explored how relatedness alters plant-soil feedbacks in established Solidago altissima clones grown in a common garden. Seedlings of known parentage were inoculated with soils from the maternal, paternal, or unrelated clones and compared to autoclaved control inocula. I found that the soil inocula generated from S. altissima had an overall negative effect of seedling biomass. Furthermore, seedlings inoculated with maternal or paternal soils experienced …
The Adaptive Capacity Of Thermal Tolerance In Chinook Salmon, Nicolas Muñoz
The Adaptive Capacity Of Thermal Tolerance In Chinook Salmon, Nicolas Muñoz
Electronic Thesis and Dissertation Repository
With global temperatures projected to surpass the limits of thermal tolerance for many species, evaluating the capacity for evolutionary and phenotypically plastic changes in thermal tolerance is key to our understanding of the biological consequences of climate change. Within quantitative genetic breeding designs and multiple rearing environments, I measured the thermal performance of cardiac function among families of two populations of chinook salmon (Oncorhynchus tshawytscha). I found significant indirect genetic, plastic, and additive genetic effects contributing to cardiac performance and thermal tolerance, representing a variety of adaptive mechanisms available to salmon populations faced with climate change. These results …