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Articles 1 - 13 of 13
Full-Text Articles in Biology
Overcompensation In Aedes Mosquitoes Populations: Field Tests On Likelihood And An Agent-Based Model To Investigate The Influence Of Cohort Structure, Katherine G. Evans
Overcompensation In Aedes Mosquitoes Populations: Field Tests On Likelihood And An Agent-Based Model To Investigate The Influence Of Cohort Structure, Katherine G. Evans
Theses and Dissertations
The number of individuals in a competitive environment can affect the growth rate, survival, size, and fecundity of those individuals, which is known as density-dependent effects. Overcompensation may occur if few juveniles survive to adulthood in a high-density environment. Overcompensation arises when density dependent survival interacts with extrinsic sources of mortality, such that more juveniles survive to adulthood than if no extrinsic mortality had occurred.
I tested the hypothesis that density dependent effects are common and strong in the field for three mosquito species: Aedes aegypti, Aedes albopictus, and Aedes triseriatus. I surveyed naturally occurring densities in novel and established …
A Male-Female Genotype-By-Genotype Interaction Mediates The Effect Of Mating On Female Immunity In Decorated Crickets, Kylie J. Hampton
A Male-Female Genotype-By-Genotype Interaction Mediates The Effect Of Mating On Female Immunity In Decorated Crickets, Kylie J. Hampton
Theses and Dissertations
Sexually antagonistic coevolution should lead to the rapid divergence of male and female genotypes related to the effects of ejaculatory substances on female physiology. Hence, the outcome of mating should depend on an interaction between male and female genotypes. Although mating has been shown to influence female immune responses in diverse insect taxa, a male-female genotype-by-genotype effect on female immunity post-mating remains largely unexplored. Here, we investigate both the effects of mating on female immunity and the potential for a male-by-female genotype interaction on the form and magnitude of this response in decorated crickets. Females from three distinct genotypic backgrounds …
Regulation Of The Microtubule Cytoskeleton And Cell Wall Development In Arabidopsis Thaliana, Christy J. Fornero
Regulation Of The Microtubule Cytoskeleton And Cell Wall Development In Arabidopsis Thaliana, Christy J. Fornero
Theses and Dissertations
Regulation of the cortical microtubule cytoskeleton is critical for organized plant cell division. Arabidopsis ton1 and ton2 mutants display random cell division plane placement and lack the plant-specific cortical microtubule array that encircles the nucleus prior to mitosis. In wild type plants, this preprophase band (PPB) of cortical microtubules precisely marks the future division plane. The specific roles of TON1 and TON2 in PPB formation are not yet known. It is suspected that TON1 Recruiting Motif (TRM) proteins may be involved in TON1 and TON2 recruitment to the PPB. Here we describe results for the targeted disruption of a group …
Petri Nets As A Unifying Tool To Link Physiologically Based Toxicokinetic (Pbtk) Models To Adverse Outcome Pathways (Aops), Ian Edhlund
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Integrating Mathematics And Biology In The Classroom: A Compendium Of Case Studies And Labs, Becky Sanft, Anne Walter
Integrating Mathematics And Biology In The Classroom: A Compendium Of Case Studies And Labs, Becky Sanft, Anne Walter
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Beyond The Binary (Part 1): Re-Envisioning The Complexity Of Life History Evolution In The Bromeliaceae With Comparative Data, Rachel Jabaily, Erin Bodine
Beyond The Binary (Part 1): Re-Envisioning The Complexity Of Life History Evolution In The Bromeliaceae With Comparative Data, Rachel Jabaily, Erin Bodine
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Oscillation In Mathematical Epidemiology, Meredith Greer
Oscillation In Mathematical Epidemiology, Meredith Greer
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Finding The Sweet Spot: What Levels Of Larval Mortality Lead To Compensation Or Overcompensation In Adult Production?, Zoey R. Neale, Steven A. Juliano
Finding The Sweet Spot: What Levels Of Larval Mortality Lead To Compensation Or Overcompensation In Adult Production?, Zoey R. Neale, Steven A. Juliano
Faculty Publications – Biological Sciences
Extrinsic mortality impinging on negative density-dependent populations can result in no change in the number of survivors (compensation) or an increase (overcompensation) by releasing the population from density-dependent effects on survivorship. The relationship between the level of extrinsic mortality (i.e., percentage of mortality) and the level and likelihood of overcompensation is theoretically important, but rarely investigated. We tested the hypothesis that overcompensation occurs below a threshold value of extrinsic mortality that is related to density-dependent mortality rate and that additive extrinsic mortality occurs above this threshold. This hypothesis predicts that survivorship vs. extrinsic mortality will (1) be best described by …
Connecting The Dots: Exploring The Relationship Between Avian Eggshell Pigmentation And Paternal Provisioning Effort, Kara E. Hodges
Connecting The Dots: Exploring The Relationship Between Avian Eggshell Pigmentation And Paternal Provisioning Effort, Kara E. Hodges
Theses and Dissertations
In a number of bird species, eggs laid by females breeding in the same population can vary extensively in the extent of their eggshell pigmentation, but the adaptive significance of this intraspecific variation remains unknown. One hypothesis posits that shell pigmentation is an honest signal of female quality that reflects her level of oxidative stress, one that is used by males to inform their subsequent paternal investment. We employed a reciprocal clutch cross-fostering design to test whether provisioning by male house wrens (Troglodytes aedon) responds to the clutch pigmentation of their mates. In experimental replicates, dark clutches were swapped with …
Effects Of Electrical Stimulation On Glioma Cells In Vitro With Implications For Treating Chronic Pain: Development Of A Model System, David C. Platt
Effects Of Electrical Stimulation On Glioma Cells In Vitro With Implications For Treating Chronic Pain: Development Of A Model System, David C. Platt
Theses and Dissertations
Glial cells comprise over 70% of the central nervous system cells and exhibit diverse functions including regulation of synaptic transmission, neuron protection/repair, maintenance of neuronal metabolism, and are implicated in the development of persistent neuropathic pain. In addition, a perturbation in the concentration of intracellular reactive oxygen species (ROS) and reactive nitrogen species (RNS) has likewise been associated with the development of a chronic pain state. This perturbation in ROS/RNS creates an environment of oxidative stress. However, the mechanism by which the pain signal transmission is modulated, and the roles ROS play in the perpetuation of the pain state are …
The Demographic And Life-History Costs Of Fear: Trait-Mediated Effects Of Threat Of Predation On Aedes Triseriatus, Geoffrey D. Ower, Steven A. Juliano
The Demographic And Life-History Costs Of Fear: Trait-Mediated Effects Of Threat Of Predation On Aedes Triseriatus, Geoffrey D. Ower, Steven A. Juliano
Faculty Publications – Biological Sciences
- Predators alter prey populations via direct lethality (density-mediated effects), but in many taxa, the indirect nonlethal threat of predation may be almost as strong an effect, altering phenotypically plastic traits such as prey morphology, behavior, and life history (trait-mediated effects). There are costs to antipredator defenses and the strength of prey responses to cues of predation likely depends on both the perceived level of risk and food availability.
- The goal of this study was to test the hypothesis that the costs of nonlethal trait-mediated interactions impacting larvae can have carryover effects that alter life-history traits, adult characteristics, and ultimately population …
How Do Trait-Mediated Non-Lethal Effects Of Predation Affect Population-Level Performance Of Mosquitoes?, Karthikeyan Chandrasegaran, Steven A. Juliano
How Do Trait-Mediated Non-Lethal Effects Of Predation Affect Population-Level Performance Of Mosquitoes?, Karthikeyan Chandrasegaran, Steven A. Juliano
Faculty Publications – Biological Sciences
Non-lethal, trait-mediated effects of predation impact prey behavior and life-history traits. Studying how these effects in turn influence prey demography is crucial to understand prey life-history evolution. Mosquitoes are important vectors that claim several million lives every year worldwide by transmitting a range of pathogens. Several ecological factors affect life-history traits of both larval and adult mosquitoes, creating effects that cascade to population-level consequences. Few studies have comprehensively explored the non-lethal effects of predation and its interactions with resources and competition on larval, adult, and population traits of mosquitoes. Understanding these interactions is important because the effects of predation are …
Microplastic Prevalence In Two Fish Species In Two U.S. Reservoirs, William Perry, Catherine M. O'Reilly, Raven Hurt
Microplastic Prevalence In Two Fish Species In Two U.S. Reservoirs, William Perry, Catherine M. O'Reilly, Raven Hurt
Faculty Publications – Biological Sciences
No abstract provided.