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Pursuit - The Journal of Undergraduate Research at The University of Tennessee
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Quality Vs Quantity: The Effect Of Aristolochic Acids On Preference And Performance Of A Non-Specialist Herbivore, Samantha Eileen Jeude
Quality Vs Quantity: The Effect Of Aristolochic Acids On Preference And Performance Of A Non-Specialist Herbivore, Samantha Eileen Jeude
Pursuit - The Journal of Undergraduate Research at The University of Tennessee
As immobile organisms, plants have evolved many strategies for defense against herbivores. These defenses can be physical, such as thorns, or chemical, such as antifeedant compounds. Most plants possess chemical compounds that serve a deterrent function against at least some herbivores. Aristolochic acids are alkaloids characteristic of plants of the genus Aristolochia. Although their toxicity and efficacy as herbivore deterrents have been documented, it is unknown whether different kinds of these compounds elicit different responses in herbivores. In this study, we use the generalist caterpillar Spodoptera exigua as a bioassay to evaluate both qualitative and quantitative effects of four aristolochic …
Variation In The Abundance Of Bees Across Distinct Montane Meadows, Jessica N. Welch
Variation In The Abundance Of Bees Across Distinct Montane Meadows, Jessica N. Welch
Pursuit - The Journal of Undergraduate Research at The University of Tennessee
Across different landscapes, plant abundance and richness change. Bee distributions may vary spatially or temporally in accordance with differences in floral diversity. I used a habitat-based approach to investigate the hypothesis that the abundance of bees in assemblages varied among three distinct meadow types: dry meadow, wet meadow-Veratrum, and wet meadow-Salix. Patterns of bee abundance were sampled using bee bowls and netting around Gothic, Colorado. I sampled four triplets of sites (each consisting of the three meadow types) every other week, between June 22 and August 26, 2009. In total, I caught 2,938 bees and identified each of them to …