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Photo: Richard E Connon

Richard E Connon- BS, PhD
Assistant Adjunct Professor
Anatomy, Physiology & Cell Biology

Room 3205
Vet Med 3B, 1089 Veterinary Medicine Drive, Davis, CA 95616

+1 530 752 3141


Research Focus

My main interest is in the mechanisms behind organisms' tolerance and adaptations to changing environments and I utilize genomic approaches to understand their sensitivity.

Specialty Focus



1998 BS (Hons) Environmental Science, Middlesex University, United Kingdom
2003 PhD Ecotoxicology, University of Reading, United Kingdom

Honors and Awards

2009 "Best Publication Award" by SETAC, to first author for best paper in ecotoxicology in 2008
2004 "Best Poster Award", Biological Sciences Fair, University of Reading, School of Biological Sciences. "Molecular and Population Stress Responses of Daphnia magna: Exposure to cadmium.
2003 "Best Poster Award", Biological Sciences Fair, University of Reading, School of Biological Sciences. "Gene Expression and Population Studies in Daphnia magna: Giving biomarkers ecological relevance." Connon R, Hooper H L, Orphanides G, Maund S, Hutchinson T, Sibly, R M, Callaghan A.

Active Research Grants

Co-Investigator, The physiological effects of elevated water temperature on three species of fish in the San Francisco Bay-Sacramento/San Joaquin Rivers Delta system: Using ecological genomics to understand the potential impacts of climate change, Ken Jeffries (Principal Investigator), California SeaGrant

Co-Principal Investigator, Developing molecular tools to assess the mechanisms of tolerance and resistance to environmental stressors in longfin smelt (Spirinchus thaleichthys), Dr. Nann Fangue (Principal Investigator), Interagency Ecological Program

Principal Investigator, Water quality, contaminants, and nutrient assessments in California waterways, (Principal Investigator), State and Federal Contractors Water Agency

Principal Investigator, A Systems Biology Assessment of EDCs in the Delta, (Principal Investigator), California Department of Fish and Game

Principal Investigator, Old Standards Versus New Approaches: Defining the Fundamental Niche of Delta Smelt (Hypomesus transpacificus), (Principal Investigator), Bureau of Reclamation

Principal Investigator, Physiological Mechanisms Of Environmental Tolerance In Delta Smelt (Hypomesus Transpacificus): From Molecules To Adverse Outcomes, (Principal Investigator), Delta Stewardship Council

Co-Investigator, Effect Assessment of Pesticide Mixtures in Aquatic Ecosystems Using Mesocosms, Sharon Lawler (Principal Investigator), California Department of Pesticide Regulation

Co-Investigator, Testing the toxicity toolbox, Dr. Swee Teh (Principal Investigator), California State Water Resources Control Board

Most Recent 10 Publications

  • Link Icon 2013 Hasenbein M, Komoroske, LM, Connon RE, Geist J, and Fangue NA Turbidity and salinity affect feeding performance and physiological stress in the endangered delta smelt Integrative Comparative Biology,
  • Link Icon 2013 Hasenbein M, Werner I, Geist J, Fritsch EB, Javidmehr A, Deanovic LA, Foe C, Fangue NA and Connon RE Transcriptomic profiling permits the identification of pollutant sources and effects in ambient water samples Science of the Total Environment,
  • Link Icon 2013 Brander SM, Connon RE, He G, Hobbs JA, Smalling KL, Teh SJ, White JW, Werner I, Denison MS and Cherr GN From 'omics to otoliths: correlated responses of an estuarine fish to endocrine disrupting compounds across biological scales PLoS ONE,
  • Link Icon 2013 Fritsch EB, Connon RE, Werner I, Davies R, Beggel S, Feng W, Pessah IN Triclosan impairs swimming behavior and alters expression of excitation-contraction coupling proteins in fathead minnow (Pimephales promelas) Environmental Science and Technology,
  • Link Icon 2012 Connon RE, Geist J, Werner I Effect-Based Tools for Monitoring and Predicting the Ecotoxicological Effects of Chemicals in the Aquatic Environment Sensors (Special Issue: Biosensors),
  • Link Icon 2012 Connon RE, D'Abronzo LS, Hostetter NJ, Javidmehr A, Roby DD, Evans AF, Loge FJ, Werner I Transcription profiling in environmental diagnostics: health assessments in Columbia River basin steelhead (Oncorhynchus mykiss) Environmental Science and Technology,
  • Link Icon 2012 Durieux EDH, Connon RE, Werner I, D'Abronzo LS, Fitzgerald PS, Spearow JL, Ostrach DJ Cytochrome P4501A mRNA and protein induction in striped bass (Morone saxatilis) Fish Physiology and Biochemistry,
  • Link Icon 2012 Beggel S, Werner I, Connon RE, Geist JP Impacts of the phenylpyrazole insecticide fipronil on larval fish: time-series gene transcription responses in fathead minnow (Pimephales promelas) following short-term exposure Science of the Total Environment,
  • Link Icon 2011 Connon RE, Deanovic LA, Fritsch EB, D'Abronzo LS, Werner I Sublethal responses to ammonia exposure in the endangered delta smelt; Hypomesus transpacificus (Fam. Osmeridae) Aquatic Toxicology,
  • Link Icon 2011 Beggel S, Connon RE, Werner I, Geist J Changes in gene transcription and whole organism responses in larval fathead minnow (Pimephales promelas) following short-term exposure to the synthetic pyrethroid bifenthrin Aquatic Toxicology,