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Ecology and Evolution

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Overview

Gregory J. Ragland is affiliated with the University of Colorado Denver in the United States. Their research primarily spans the fields of agricultural and biological sciences as well as environmental science.

The main areas of study in their work include:

  • Agricultural and Biological Sciences
  • Environmental Science

Within these fields, Ragland focuses on several subfields such as:

  • Ecology
  • Insect Science
  • Genetics
  • Ecology, Evolution, Behavior and Systematics
  • Cellular and Molecular Neuroscience

The primary topics covered in their publications include:

  • Physiological and biochemical adaptations
  • Neurobiology and Insect Physiology Research
  • Insect and Arachnid Ecology and Behavior
  • Insect behavior and control techniques
  • Forest Insect Ecology and Management
  • Animal Behavior and Reproduction
  • Insect-Plant Interactions and Control

Recent publications by Ragland include the following papers:

  • Genome-wide variation and transcriptional changes in diverse developmental processes underlie the rapid evolution of seasonal adaptation, 2020, Proceedings of the National Academy of Sciences
  • A rapidly evolved shift in life-history timing during ecological speciation is driven by the transition between developmental phases, 2020, Journal of Evolutionary Biology
  • Evolutionary ecology of the bark beetles Ips typographus and Pityogenes chalcographus, 2022, Bulletin of Entomological Research
  • Facultative and obligate diapause phenotypes in populations of the European spruce bark beetle Ips typographus, 2021, Journal of Pest Science
  • Can the genomics of ecological speciation be predicted across the divergence continuum from host races to species? A case study in Rhagoletis, 2020, Philosophical Transactions of the Royal Society B Biological Sciences

Frequent co-authors in their research include:

  • Jantina Toxopeus
  • Jeffrey L. Feder
  • Daniel A. Hahn
  • Thomas H. Q. Powell
  • Lalitya Andaloori

Ragland's work is regularly published in several venues, including:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Physiological Entomology
  • Zenodo (CERN European Organization for Nuclear Research)
  • Journal of Evolutionary Biology
  • Journal of Experimental Biology

Best Publications

  • Mechanisms of suspended animation are revealed by transcript profiling of diapause in the flesh fly

    Gregory J. Ragland;David L. Denlinger;Daniel A. Hahn

  • Experimental evidence of genome‐wide impact of ecological selection during early stages of speciation‐with‐gene‐flow

    Scott P. Egan;Scott P. Egan;Gregory J. Ragland;Gregory J. Ragland;Lauren Assour;Thomas H.Q. Powell;Thomas H.Q. Powell

  • Developmental trajectories of gene expression reveal candidates for diapause termination: a key life-history transition in the apple maggot fly Rhagoletis pomonella

    Gregory J. Ragland;Scott P. Egan;Jeffrey L. Feder;Stewart H. Berlocher

  • Combined transcriptomic and metabolomic approach uncovers molecular mechanisms of cold tolerance in a temperate flesh fly

    Nicholas Mario Teets;Justin T. Peyton;Gregory J. Ragland;Gregory J. Ragland;Herve Colinet;Herve Colinet

  • Understanding Evolutionary Impacts of Seasonality: An Introduction to the Symposium.

    Caroline M Williams;Gregory J Ragland;Gustavo Betini;Lauren B Buckley

  • Gene discovery using massively parallel pyrosequencing to develop ESTs for the flesh fly Sarcophaga crassipalpis.

    Daniel A Hahn;Gregory J Ragland;D DeWayne Shoemaker;David L Denlinger

  • EVOLUTION IN A CONSTANT ENVIRONMENT: THERMAL FLUCTUATIONS AND THERMAL SENSITIVITY OF LABORATORY AND FIELD POPULATIONS OF MANDUCA SEXTA

    Joel G. Kingsolver;Gregory J. Ragland;Sarah E. Diamond

  • Plasticity of Size and Growth in Fluctuating Thermal Environments: Comparing Reaction Norms and Performance Curves

    Joel G. Kingsolver;Rima Izem;Gregory J. Ragland

  • Quantitative genetics of continuous reaction norms: thermal sensitivity of caterpillar growth rates.

    Joel G. Kingsolver;Gregory J. Ragland;J. Gwen Shlichta

  • The effect of fluctuating temperatures on ectotherm life-history traits: comparisons among geographic populations of Wyeomyia smithii

    Gregory J. Ragland;Gregory J. Ragland;Joel G. Kingsolver

  • Rapid population divergence in thermal reaction norms for an invading species: breaking the temperature–size rule

    J. G. Kingsolver;K. R. Massie;G. J. Ragland;M. H. Smith

  • Differences in performance and transcriptome-wide gene expression associated with Rhagoletis (Diptera: Tephritidae) larvae feeding in alternate host fruit environments.

    Gregory J. Ragland;Gregory J. Ragland;Kristin Almskaar;Kim L. Vertacnik;Harlan M. Gough

  • Sympatric ecological speciation meets pyrosequencing: sampling the transcriptome of the apple maggot Rhagoletis pomonella

    Dietmar Schwarz;Dietmar Schwarz;Hugh M Robertson;Jeffrey L Feder;Kranthi Varala

  • Biphasic metabolic rate trajectory of pupal diapause termination and post-diapause development in a tephritid fly

    Gregory J. Ragland;John Fuller;Jeffrey L. Feder;Daniel A. Hahn

  • Diapause and overwintering of two spruce bark beetle species

    Martin Schebeck;E. Matthew Hansen;Axel Schopf;Gregory J. Ragland

  • Thermal reaction norms for caterpillar growth depend on diet

    Joel G. Kingsolver;J. Gwen Shlichta;J. Gwen Shlichta;Gregory J. Ragland;Katie R. Massie;Katie R. Massie

  • Comparative transcriptomics support evolutionary convergence of diapause responses across Insecta

    Gregory J. Ragland;Gregory J. Ragland;Evan Keep;Evan Keep

  • EVOLUTION OF THERMOTOLERANCE IN SEASONAL ENVIRONMENTS: THE EFFECTS OF ANNUAL TEMPERATURE VARIATION AND LIFE‐HISTORY TIMING IN WYEOMYIA SMITHII

    Gregory J. Ragland;Gregory J. Ragland;Joel G. Kingsolver

  • Patterns of Genomic Differentiation between Ecologically Differentiated M and S Forms of Anopheles gambiae in West and Central Africa

    Kyanne R. Reidenbach;Daniel Edward Neafsey;Carlo Costantini;N’Fale Sagnon

  • Evolutionary and functional genetics of insect diapause: a call for greater integration.

    Gregory J Ragland;Peter A Armbruster;Megan E Meuti

  • A test of genomic modularity among life-history adaptations promoting speciation with gene flow

    Gregory J. Ragland;Gregory J. Ragland;Meredith M. Doellman;Peter J. Meyers;Glen R. Hood;Glen R. Hood

  • Genomic Differentiation during Speciation-with-Gene-Flow: Comparing Geographic and Host-Related Variation in Divergent Life History Adaptation in Rhagoletis pomonella

    Meredith M Doellman;Gregory J Ragland;Gregory J Ragland;Glen R Hood;Glen R Hood;Peter J Meyers

Frequent Co-Authors

Jeffrey L. Feder
Jeffrey L. Feder University of Notre Dame
Scott P. Egan
Scott P. Egan Rice University
Patrik Nosil
Patrik Nosil University of Sheffield
Joel G. Kingsolver
Joel G. Kingsolver University of North Carolina at Chapel Hill
Christian Stauffer
Christian Stauffer BOKU University
Hugh M. Robertson
Hugh M. Robertson University of Illinois at Urbana-Champaign
Barbara J. Bentz
Barbara J. Bentz US Forest Service
David L. Denlinger
David L. Denlinger The Ohio State University
Marc A. T. Muskavitch
Marc A. T. Muskavitch Biogen (United States)
Hervé Colinet
Hervé Colinet University of Rennes

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