# positions[].organizations[].parent[].label
College of Agriculture and Life Sciences

# overview
I've been very fortunate to have studied many things in many places with many people. Much of my research to date has focused on the biology and ecology of grasshoppers, locusts and Mormon crickets. More recently, I've been given the chance to expand my research program to problems in cotton entomology. It's a pretty unique opportunity, and I am happy to say that the lab is up and running on multiple fronts. Although the emphasis has shifted to cotton research, locust biology and anything else that strikes an interest continues to be fair game in the lab.

# keywords[]
1.1 Normal Biological Development And Functioning

# keywords[]
Reverse Transcriptase Polymerase Chain Reaction

# keywords[]
Weather Research And Forecasting (wrf) Model

# keywords[]
Reverse Transcriptase Polymerase Chain Reaction

# keywords[]
30 Agricultural, Veterinary And Food Sciences

# educationAndTraining[].organization.label
The University of Texas at Austin - (Austin, Texas, United States)

# educationAndTraining[].organization.label
University of Arizona - (Tucson, Arizona, United States)

# publications[].label
Is there an intraspecific role for density-dependent colour change in the desert locust?

# publications[].label
Change in geomagnetic field intensity alters migration-associated traits in a migratory insect.

# publications[].label
Modeling spatiotemporal dynamics of outbreaking species: influence of environment and migration in a locust

# publications[].label
Genome-wide markers reveal temporal instability of local population genetic structure in the cotton fleahopper, Pseudatomoscelis seriatus (Hemiptera: Miridae).

# publications[].label
Protein-carbohydrate regulation in Helicoverpa amigera and H. punctigera and how diet protein-carbohydrate content affects insect susceptibility to Bt toxins.

# publications[].label
Do outbreaks affect genetic population structure? A worldwide survey in Locusta migratoria, a pest plagued by microsatellite null alleles.

# publications[].label
Plant-associated fungi affect above- and belowground pest responses to soybean plants.

# publications[].label
Cannibalism can drive the evolution of behavioural phase polyphenism in locusts.

# publications[].label
Assessment and validation of a suite of reverse transcription-quantitative PCR reference genes for analyses of density-dependent behavioural plasticity in the Australian plague locust.

# publications[].label
An experimental analysis of grasshopper community responses to fire and livestock grazing in a northern mixed-grass prairie.

# publications[].label
Nutrition as a neglected factor in insect herbivore susceptibility to Bt toxins.

# publications[].label
Nutritional ecology beyond the individual: a conceptual framework for integrating nutrition and social interactions.

# publications[].label
Double trouble for grasshopper molecular systematics: Intra-individual heterogeneity of both mitochondrial 12S-valine-16S and nuclear internal transcribed spacer ribosomal DNA sequences in Hesperotettix viridis (Orthoptera: Acrididae)

# publications[].label
Foraging by generalist grasshoppers: Two different strategies

# publications[].label
Migratory bands give crickets protection

# publications[].label
Molecular characterization, spatial-temporal expression and magnetic response patterns of iron-sulfur cluster assembly1 (IscA1) in the rice planthopper, Nilaparvata lugens.

# publications[].label
Population genomics and phylogeography of the boll weevil, Anthonomus grandis Boheman (Coleoptera: Curculionidae), in the United States, northern Mexico, and Argentina.

# publications[].label
Quantity versus quality: Effects of diet protein-carbohydrate ratios and amounts on insect herbivore gene expression.

# publications[].label
Optimizing multivariate behavioural syndrome models in locusts using automated video tracking

# publications[].label
Behavioural phase change in the Australian plague locust, Chortoicetes terminifera, is triggered by tactile stimulation of the antennae.

# publications[].label
Insect behaviour: migratory bands give crickets protection.

# publications[].label
The social context of cannibalism in migratory bands of the Mormon cricket.

# publications[].label
Linking locust gregarization to local resource distribution patterns across a large spatial scale

# publications[].label
First transgenic trait for control of plant bugs and thrips in cotton.

# publications[].label
Source population determination for boll weevil re-infestation Events in Texas.

# publications[].label
Locusts and Grasshoppers: Behavior, Ecology, and Biogeography

# publications[].label
Mitochondrial genomes reveal the global phylogeography and dispersal routes of the migratory locust.

# publications[].label
Phase polyphenism and preventative locust management.

# publications[].label
An Advanced Numerical Trajectory Model Tracks a Corn Earworm Moth Migration Event in Texas, USA.

# publications[].label
Modelling nutrition across organizational levels: from individuals to superorganisms.

# publications[].label
Immediate protein dietary effects on movement and the generalised immunocompetence of migrating Mormon crickets Anabrus simplex (Orthoptera: Tettigoniidae)

# publications[].label
Radiotelemetry reveals differences in individual movement patterns between outbreak and non-outbreak Mormon cricket populations

# publications[].label
Cannibal crickets on a forced march for protein and salt.

# publications[].publisher
Proceedings of the National Academy of Sciences

# publications[].label
Epigenetics and developmental plasticity in orthopteroid insects.

# publications[].label
The fungal endophyte Chaetomium globosum negatively affects both above- and belowground herbivores in cotton.

# publications[].label
Laboratory Populations as a Resource for Understanding the Relationship Between Genotypes and Phenotypes

# publications[].label
Fungal endophytes for improved crop yields and protection from pests

# publications[].label
Endophytic fungi alter sucking bug responses to cotton reproductive structures.

# publications[].label
Anisotropic Interaction and Motion States of Locusts in a Hopper Band

# publications[].label
Cannibalism in the lifeboat - collective movement in Australian plague locusts

# publications[].label
Adsorbent-SERS Technique for Determination of Plant VOCs from Live Cotton Plants and Dried Teas.

# publications[].label
VARIATION IN THE SURFACE-LIPIDS OF THE GRASSHOPPER, SCHISTOCERCA-AMERICANA (DRURY)

# publications[].label
Predator percolation, insect outbreaks, and phase polyphenism.

# publications[].label
Potential Distribution of Wild Host Plants of the Boll Weevil (Anthonomus grandis) in the United States and Mexico.

# publications[].label
Local population density and the activation of movement in migratory band-forming Mormon crickets

# publications[].label
First draft genome assembly of the desert locust, Schistocerca gregaria.

# publications[].label
Resin cast impressions as a tool for microscopic observations of fungal epiphytes on leaves.

# publications[].label
Double trouble for grasshopper molecular systematics: intra-individual heterogeneity of both mitochondrial 12S-valine-16S and nuclear internal transcribed spacer ribosomal DNA sequences in Hesperotettix viridis (Orthoptera : Acrididae)

# publications[].label
Cryptochromes and Hormone Signal Transduction under Near-Zero Magnetic Fields: New Clues to Magnetic Field Effects in a Rice Planthopper.

# publications[].label
Tasty on the outside, but toxic in the middle: grasshopper regurgitation and host plant-mediated toxicity to a vertebrate predator.

# publications[].label
Eight polymorphic microsatellite loci for the Australian plague locust, Chortoicetes terminifera.

# publications[].label
THE EFFECTS OF ENDOPHYTIC PURPUREOCILLIUM LILACINUM AND CHAETOMIUM GLOBOSUM ON ROOT-KNOT NEMATODE MELOIDOGYNE INCOGNITA UNDER GREENHOUSE AND FIELD CONDITIONS.

# publications[].label
Fungal endophytes for improved crop yields and protection from pests

# publications[].label
Ancient trans-Atlantic flight explains locust biogeography: molecular phylogenetics of Schistocerca.

# publications[].label
Long microsatellites and unusually high levels of genetic diversity in the Orthoptera.

# publications[].label
Nutrition affects insect susceptibility to Bt toxins.

# publications[].label
First draft genome assembly of the desert locust, Schistocerca gregaria

# publications[].label
Multiscale analyses on a massive immigration process of Sogatella furcifera (Horvth) in south-central China: influences of synoptic-scale meteorological conditions and topography.

# publications[].label
Spatial and temporal variation in fungal endophyte communities isolated from cultivated cotton (Gossypium hirsutum).

# publications[].label
Nutritional state and collective motion: from individuals to mass migration.

# publications[].label
Density-dependent aposematism in the desert locust.

# publications[].label
Olfactometer Responses of Convergent Lady Beetles Hippodamia convergens (Coleoptera: Coccinellidae) to Odor Cues from Aphid-Infested Cotton Plants Treated with Plant-Associated Fungi.

# publications[].label
Protein-carbohydrate regulation and nutritionally mediated responses to Bt are affected by caterpillar population history.

# publications[].label
Geomagnetic field absence reduces adult body weight of a migratory insect by disrupting feeding behavior and appetite regulation.

# publications[].label
Colonization of crop plants by fungal entomopathogens and their effects on two insect pests when in planta

# publications[].label
Tapping Into the Cotton Fungal Phytobiome for Novel Nematode Biological Control Tools

# publications[].label
Reliable reference genes for gene expression analyses under the hypomagnetic field in a migratory insect.

# publications[].label
Developmental specialization and geographic structure of host plant use in a polyphagous grasshopper, Schistocerca emarginata (=lineata) (Orthoptera: Acrididae).

# publications[].label
Photoperiod-Specific Within-Plant Distribution of the Green Stink Bug (Hemiptera: Pentatomidae) on Cotton.

# publications[].label
Laboratory Populations as a Resource for Understanding the Relationship Between Genotypes and Phenotypes: A Global Case Study in Locusts

# publications[].label
Development of RNAi Methods for the Mormon Cricket, Anabrus simplex (Orthoptera: Tettigoniidae).

# publications[].label
Fungal endophytes for improved crop yields and protection from pests

# publications[].label
Population structures of three Calliptamus spp. (Orthoptera: Acrididae) across the Western Mediterranean Basin

# publications[].label
The role of spatial aggregation in forensic entomology.

# publications[].label
Whole genome comparisons reveal panmixia among fall armyworm (Spodoptera frugiperda) from diverse locations.

# publications[].label
Using field data to test locust migratory band collective movement models.

# publications[].label
Fungal endophytes for improved crop yields and protection from pests

# publications[].label
A role for phenotypic plasticity in the evolution of aposematism.

# publications[].label
Behavioural phase polyphenism in the Australian plague locust (Chortoicetes terminifera).

# publications[].label
Sampling Volatile Organic Compounds from Individual Cotton Leaves to Test Effects of Fungal Endophyte Treatments

# publications[].label
Plant Response and Economic Injury Levels for a Boll-Feeding Sucking Bug Complex on Cotton.

# publications[].label
Quantifying Plant Soluble Protein and Digestible Carbohydrate Content, Using Corn (Zea mays) As an Exemplar.

# publications[].label
Group structure in locust migratory bands

# publications[].label
Patterns of genomic and allochronic strain divergence in the fall armyworm, Spodoptera frugiperda (J.E. Smith).

# publications[].label
Rice stripe virus counters reduced fecundity in its insect vector by modifying insect physiology, primary endosymbionts and feeding behavior.

# publications[].label
To be or not to be a locust? A comparative analysis of behavioral phase change in nymphs of Schistocerca americana and S. gregaria.

# publications[].label
The endophytic fungal entomopathogens Beauveria bassiana and Purpureocillium lilacinum enhance the growth of cultivated cotton (Gossypium hirsutum) and negatively affect survival of the cotton bollworm (Helicoverpa zea)

# publications[].label
Evidence for widespread genomic methylation in the migratory locust, Locusta migratoria (Orthoptera: Acrididae).

# publications[].label
A fungal endophyte defensive symbiosis affects plant-nematode interactions in cotton

# publications[].label
Endophytic Lecanicillium lecanii and Beauveria bassiana reduce the survival and fecundity of Aphis gossypii following contact with conidia and secondary metabolites

# publications[].label
Integrated modelling of the life cycle and aeroecology of wind-borne pests in temporally-variable spatially-heterogeneous environment

# publications[].label
From the bellies of babes: a larval-based approach to ant molecular gut content analysis

# publications[].label
Challenges to assessing connectivity between massive populations of the Australian plague locust.

# publications[].label
Revisiting macronutrient regulation in the polyphagous herbivore Helicoverpa zea (Lepidoptera: Noctuidae): New insights via nutritional geometry.

# publications[].label
Sustainable management of insect herbivores in grassland ecosystems: New perspectives in grasshopper control

# publications[].label
Rapid behavioural gregarization in the desert locust, Schistocerca gregaria entails synchronous changes in both activity and attraction to conspecifics.

# publications[].label
THE RELATIONSHIP BETWEEN PLANT ACCEPTABILITY AND SUITABILITY FOR SURVIVAL AND DEVELOPMENT OF THE POLYPHAGOUS GRASSHOPPER, SCHISTOCERCA-AMERICANA (ORTHOPTERA, ACRIDIDAE)

# publications[].label
Fungal endophytes for improved crop yields and protection from pests

# publications[].label
The behavioral mechanisms governing collective motion in swarming locusts.

# publications[].publisher
American Association for the Advancement of Science (AAAS)

# publications[].label
Alternative migratory locust phenotypes are associated with differences in the expression of genes encoding the methylation machinery.

# publications[].label
The entomopathogenic fungal endophytes Purpureocillium lilacinum (formerly Paecilomyces lilacinus) and Beauveria bassiana negatively affect cotton aphid reproduction under both greenhouse and field conditions.

# publications[].label
Analysis of Inducible Terpenoids in Cotton Leaves to Test for Indirect Plant-Endophyte-Herbivore Interactions

# publications[].label
Taxa-specific heat shock proteins are over-expressed with crowding in the Australian plague locust.

# publications[].label
Radiotelemetric analysis of the effects of prevailing wind direction on Mormon cricket migratory band movement.

# publications[].label
From Molecules to Management: Mechanisms and Consequences of Locust Phase Polyphenism

# publications[].label
MONOPHAGY IN A POLYPHAGOUS GRASSHOPPER, SCHISTOCERCA SHOSHONE

# publications[].label
A comparative analysis of fine-scale genetic structure in three closely related syntopic species of the grasshopper genus Calliptamus

# publications[].label
Behavioral evidence for a magnetic sense in the oriental armyworm, Mythimna separata.

# publications[].label
Bio-effects of near-zero magnetic fields on the growth, development and reproduction of small brown planthopper, Laodelphax striatellus and brown planthopper, Nilaparvata lugens.

# publications[].label
Novel real-time PCR based assays for differentiating fall armyworm strains using four single nucleotide polymorphisms.

# publications[].label
Spatio-Temporal, Genotypic, and Environmental Effects on Plant Soluble Protein and Digestible Carbohydrate Content: Implications for Insect Herbivores with Cotton as an Exemplar.

# publications[].label
Collective motion and cannibalism in locust migratory bands.

# publications[].label
A Beneficial Plant-Associated Fungus Shifts the Balance toward Plant Growth over Resistance, Increasing Cucumber Tolerance to Root Herbivory.

# publications[].label
Polyphenism in Insects (vol 21, pg R738, 2011)

# publications[].label
Fungal Endophytes in Knock Out (R) Rose and Performance Effects of Entomopathogens on Marigold and Zinnia

# publications[].publisher
American Society For Horticultural Science

# publications[].label
Foraging on individual leaves by an intracellular feeding insect is not associated with leaf biomechanical properties or leaf orientation.

# publications[].publisher
Proceedings of the National Academy of Sciences

# publications[].label
Evaluation of potential reference genes for reverse transcription-qPCR studies of physiological responses in Drosophila melanogaster.

# publications[].label
Identification of a novel resistance gene which provides insight into Vip3Aa mode of action in Helicoverpa armigera

# publications[].label
Foliar herbivory increases sucrose concentration in bracteal extrafloral nectar of cotton.

# publications[].label
ARTHROPOD MANAGEMENT & APPLIED ECOLOGY Amplicon Sequencing of Plant Material Links Cotton Fleahopper to Host Plants

# publications[].label
Reduced geomagnetic field may affect positive phototaxis and flight capacity of a migratory rice planthopper

# publications[].label
Host-associated differentiation in a highly polyphagous, sexually reproducing insect herbivore.

# publications[].label
The importance of the ontogenetic niche in resource-associated divergence: evidence from a generalist grasshopper.

# publications[].label
Characterization of transgenic cotton (Gossypium hirsutum L.) over-expressing Arabidopsis thaliana Related to ABA-insensitive3(ABI3)/Vivparous1 (AtRAV1) and AtABI5 transcription factors: improved water use efficiency through altered guard cell physiology

# publications[].label
Host plant-associated genetic differentiation in the snakeweed grasshopper, Hesperotettix viridis (Orthoptera: Acrididae).

# publications[].label
In vitro and in planta compatibility of insecticides and the endophytic entomopathogen, Lecanicillium lecanii.

# publications[].label
Anisotropic interaction and motion states of locusts in a hopper band.

# publications[].label
Genetic basis of resistance to the Vip3Aa Bt protein in Helicoverpa zea.

# publications[].label
THE IMPORTANCE OF PALPATION IN FOOD SELECTION BY A POLYPHAGOUS GRASSHOPPER (ORTHOPTERA, ACRIDIDAE)

# publications[].label
Sugar is an ant's best friend? Testing food web theory predictions about trophic position and abundance in an invasive ant (Nylanderia fulva)

# publications[].label
Grasshopper Herbivory Affects Native Plant Diversity and Abundance in a Grassland Dominated by the Exotic Grass Agropyron cristatum

# publications[].label
Physiological and transcriptional immune responses of a non-model arthropod to infection with different entomopathogenic groups.

# publications[].label
Modeling spatiotemporal dynamics of outbreaking species: influence of environment and migration in a locust.

# publications[].label
Nuclear insertions and heteroplasmy of mitochondrial DNA as two sources of intra-individual genomic variation in grasshoppers

# publications[].label
Geographic Variation of Bacterial Communities Associated with Cotton Fleahopper, Pseudatomoscelis seriatus

# publications[].label
USE OF CUTICULAR LIPIDS IN GRASSHOPPER TAXONOMY - A STUDY OF VARIATION IN SCHISTOCERCA SHOSHONE (THOMAS)

# publications[].label
First evidence of protein-carbohydrate regulation in a plant bug (Lygus hesperus).

# publications[].label
Sexual repurposing of juvenile aposematism in locusts.

# publications[].publisher
Proceedings of the National Academy of Sciences

# researcherOn[].label
Using Population Genomics to Reveal the Level of Intermixing Among Cotton Fleahopper Populations in Cotton and Wild Weed Hosts

# researcherOn[].awardedBy.label
Agricultural Research Service - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Mechanisms of fungal endophyte-mediated resistance to insects in cotton

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].awardedBy.preferredLabel
USDA-National Institute of Food And Agriculture

# researcherOn[].label
Areawide Pest Management of the Invasive Sugarcane Aphid in Grain Sorghum - Synoptic Modeling

# researcherOn[].awardedBy.label
Agricultural Research Service - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Development of Rapid Diagnostic Tools for Anthonomus grandis Boheman (Coleoptera: Curculionidae) Subspecies and its Congenerics

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Molecular-based initiatives to support the Old World Bollworm Strategic Management Plan (FY2017)

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Developing smart molecular insecticide (RNAi-based) control method targeting Mormon crickets (Orthoptera: Tettigoniidae)

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
An integrative approach to fall armyworm population genomics

# researcherOn[].awardedBy.label
National Institute of Food and Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].awardedBy.label
Agricultural Research Service - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Molecular-based initiatives to support the Old World Bollworm Strategic Management Plan (FY2016)

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Molecular-based initiatives to support the Old World Bollworm Strategic Management Plan

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Development of Rapid Diagnostic Tools for Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae) and its Non-pest Variants

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].awardedBy.label
Agricultural Research Service - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Molecular diagnostics development for intercepted Lepidoptera larvae

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
Nutritionally-mediated variation in Helicoverpa zea susceptibility to Bt transgenic crops

# researcherOn[].awardedBy.label
United States Department of Agriculture - (Washington D.C., District of Columbia, United States)

# researcherOn[].awardedBy.preferredLabel
USDA-National Institute of Food And Agriculture

# streetAddress
Texas A&M University; Entomology; 2475 TAMU

# organizations[]
College of Agriculture and Life Sciences

# schools[]
College of Agriculture and Life Sciences

# inTheNews[].label
New institute to study behavioral plasticity in locusts

# etdChairOf[].label
Deans, Carrie Ann (2015-08). The Interaction between Nutrition and Insect Stress Response in a Cotton Model System. Doctoral Dissertation.

# etdChairOf[].label
Castillo Lopez, Diana (2015-05). Ecological Roles of Two Entomopathogenic Endophytes: Beauveria bassiana and Purpureocillium lilacinum in Cultivated Cotton. Doctoral Dissertation.

# etdChairOf[].label
Antwi, Josephine Bema (2015-08). Host Plant Use by Insect Herbivores Mediated by Microorganisms. Doctoral Dissertation.