A5044025490- Plant and animal studies
- Animal Behavior and Reproduction
- Invertebrate Taxonomy and Ecology
- Insect and Arachnid Ecology and Behavior
- Livestock and Poultry Management
- Amphibian and Reptile Biology
- Nicotinic Acetylcholine Receptors Study
- Ion channel regulation and function
- Agricultural pest management studies
- Insect-Plant Interactions and Control
- Environmental Toxicology and Ecotoxicology
- Species Distribution and Climate Change
- Insect and Pesticide Research
- Evolution and Genetic Dynamics
- Wildlife Ecology and Conservation
- Lepidoptera: Biology and Taxonomy
- Marine Toxins and Detection Methods
- Aquatic Invertebrate Ecology and Behavior
- Primate Behavior and Ecology
- Pharmaceutical and Antibiotic Environmental Impacts
- Genetics, Aging, and Longevity in Model Organisms
- Neurobiology and Insect Physiology Research
- Trace Elements in Health
- Metabolomics and Mass Spectrometry Studies
- Neuroscience and Neuropharmacology Research
University of Minnesota
2016-2024
Sweet Briar College
2021-2024
University of Nebraska–Lincoln
2019-2022
University of Oxford
2018
University of Toronto
2018
University of Sheffield
2018
Australian National University
2018
Université de Montpellier
2018
Centre National de la Recherche Scientifique
2018
University of St Andrews
2018
Adaptive phenotypic plasticity provides a mechanism of developmental rescue in novel and rapidly changing environments. Understanding the underlying is important for predicting both likelihood that response adaptive associated life-history trade-offs could influence patterns subsequent evolutionary rescue. Although evolved switches may move organisms toward new peak environment, such mechanisms often result maladaptive responses. The induction generalized physiological environments...
On microevolutionary timescales, adaptive evolution depends upon both natural selection and the underlying genetic architecture of traits under selection, which may constrain evolutionary outcomes. Whether such constraints shape phenotypic diversity over macroevolutionary timescales is more controversial, however. One key prediction that should bias early stages species divergence along "genetic lines least resistance" defined by (co)variance matrix, G. This expected to erode time as means G...
Many poisonous organisms carry small-molecule toxins that alter voltage-gated sodium channel (NaV) function. Among these, batrachotoxin (BTX) from Pitohui poison birds and Phyllobates frogs stands out because of its lethality unusual effects on NaV How these toxin-bearing avoid autointoxication remains poorly understood. In frogs, a DIVS6 pore-forming helix N-to-T mutation has been proposed as the BTX resistance mechanism. Here, we show this variant is absent frog NaVs, incurs strong cost...
The G matrix, which quantifies the genetic architecture of traits, is often viewed as an evolutionary constraint. However, can evolve in response to selection and may also be a product adaptive evolution. Convergent evolution similar environments would suggest that evolves adaptively, but it difficult disentangle such effects from phylogeny. Here, we use radiation Anolis lizards ask whether convergence accompanies repeated habitat specialists, or ecomorphs, across Greater Antilles. We...
Anthropogenic increases in nutrient availability offer opportunities to study evolutionary shifts sexual selection dynamics real time. A rapid increase may reduce the utility of condition-dependent ornaments as signals quality and lessen any nutritional benefits females from re-mating. We explored these ideas using cabbage white butterflies, focusing on nitrogen a nutrient, it is important this species not only ornamentation, but also key macronutrient transferred spermatophores. compared...
Abstract Zinc is a widespread pollutant released from industrial combustion, automobile residue, and mining. accumulates in soils mobilises into plant tissue where it may be consumed to potentially toxic levels by leaf feeding insects, including developing pollinators. While zinc tolerance thresholds have been previously assessed insect pollinators, most observations are limited model organisms pest species. We lack understanding of insects conservation concern. assess dietary caterpillars...
Agricultural environments have long presented an opportunity to study evolution in action, and genomic approaches are opening doors for testing hypotheses about adaptation crops, pesticides, fertilizers. Here, we begin develop the cabbage white butterfly (Pieris rapae) as a system test questions novel, agricultural environments. We focus on population north central United States unique case study: here, canola, host plant, has been grown during entire flight period of over last three...
Heavy metal pollution is a major problem in urban and industrial environments, has myriad of negative effects on animals. Quantifying the amount population-level variation that exists for heavy tolerance how plastic responses to metals play out across generations are essential understanding animals respond pollution. As an initial step toward studying transgenerational concert, we brought cabbage white butterflies (Pieris rapae) from two populations-collected St. Paul, MN, Davis, CA-into...
Abstract Neonicotinoid pesticides harm nontarget insects, but their sublethal effects on butterflies are understudied. We exposed larvae of 3 butterfly species (Pieris rapae, Colias philodice, and Danaus plexippus) to low levels the neonicotinoid imidacloprid in host plants followed individuals adulthood. Imidacloprid altered adult body size, especially female monarchs, its varied across maternal families, highlighting importance considering genetic variation ecotoxicological testing....
The reaction of peptides with chemicals already present in natural waters (such as polycyclic aromatic hydrocarbons) is one method that has been suggested to preserve for the longer term. In this study we test whether tetrapeptides a model quinone can help stabilise peptide polluted riverine system, Elizabeth River Virginia, USA. We found there almost no difference rate constants between and its adduct (e.g. 6.62 versus 6.86 per day AVFA respective adduct). However, when monitoring removal...
Organisms encounter a wide range of toxic compounds in their environments, from chemicals that serve anticonsumption or anticompetition functions to pollutants and pesticides. Although we understand many detoxification mechanisms allow organisms consume toxins typical diet, know little about why vary ability tolerate entirely novel toxins. We tested whether variation generalized stress responses, such as antioxidant pathways, may underlie reactions and, if so, associated costs. used an...
Abstract Roadside habitat has been touted as a conservation opportunity for insect pollinators, including the declining monarch butterfly. The spectacular migration is under threat from loss of and decline their milkweed host plants. In northern part range, roadsides could potentially produce millions monarchs annually due to high densities milkweed; however, roadside can accumulate chemicals roads, such sodium road salt. Controlled lab studies have shown mixed effects on development: small...
The cabbage white butterfly (Pieris rapae) is an important system for applied pest control research and basic in behavioral nutritional ecology. Cabbage whites can be easily reared controlled conditions on artificial diet, making them a model organism of the world. In this paper, manipulation heavy metal exposure used to illustrate methods rearing species. general protocol illustrates how butterflies caught field, induced lay eggs greenhouse cages, transferred as larvae diets. show marked,...
Abstract The spectacular migration of the monarch butterfly is under threat from loss habitat and decline their milkweed host plants. In northern part range, roadsides could potentially produce millions monarchs annually due to high densities milkweed, however roadside can accumulate chemicals roads, such as sodium road salt. Controlled lab studies have shown mixed effects on development: small increases be beneficial an important micronutrient in brain muscle development, but large...