Wildlife/Exotic Animal Medicine and Zoonoses
Melanie Ammersbach
Department of Pathology, Microbiology and Immunology
(see also: Pathology/Virology, Non-human Primate Medicine)
Dr. Ammersbach is a veterinary clinical pathologist with a special interest in non-traditional species. The areas of expertise of clinical pathologists include clinical chemistry, hematology and cytology. Non-traditional species include exotic pets, zoo animals, wildlife and laboratory animals.
There are many potential projects, including several collaborations with other faculty members, such as: 1. A collaboration with the primate center and Dr. Olstad to evaluate neutrophil morphology with inflammation (retrospective study), and cerebrospinal fluid analysis findings (retrospective and prospective) and their association with a number of diseases. 2. A collaboration with Dr. Van Hoy on a project validating and establishing normal reference intervals for blood gases and coagulation tests in pet minipigs and 3. A collaboration with Dr. Beaufrere documenting lipoproteins in birds (including cockatiels and flamingoes) using high resolution lipoprotein electrophoresis.
STAR students will explore projects in the field of clinical pathology (hematology, biochemistry or cytology) of non-traditional species (exotics, wildlife, laboratory animals).
Feel free to reach out at mammersbach@ucdavis.edu for more information.
Faculty Bio
Hugues Beaufrère, DVM, PhD, DACZM, DABVP (Avian), DECZM (Avian)
(see also: Diagnostic Imaging)
Dept of Medicine and Epidemiology – School of Veterinary Medicine
Dr. Beaufrère main research area is on lipid disorders and lipid diagnostic tests in birds and reptiles such as studies on atherosclerosis, hepatic lipidosis, and plasma lipid biomarkers. Dr. Beaufrère is also very active in clinical research in companion zoological medicine on a variety of topics and has a special interest in applied biostatistics in zoological medicine.
STAR students will participate in research projects related to sodium fluoride pet-scan of arteries in Amazon parrots: comparison of scanning protocols /CT contrast timing in bearded dragons.
Please email Dr. Beaufrere for more information.
Jenessa Gjeltema, DVM, Dipl. ACZM
Research Focus: Effects of anthropogenic litter (plastic) pollution on animal, human, and ecosystem health. Application, evaluation, and validation of clinical diagnostics and therapeutics in zoological species.
(See also: Anesthesia/Pain Management)
Affiliated departments: UC Davis One Health Institute, Karen C. Drayer Wildlife Health Center, and Department of Medicine and Epidemiology
As Assistant Professor of Zoological Medicine and Head Veterinarian at the Sacramento Zoo, Dr. Jenessa Gjeltema, DVM, Dipl. ACZM, a board-certified specialist in Zoological MedicineTM, provides both clinical veterinary service and engages in research in the field of Zoological/Wildlife Medicine.
Possible student research projects include:
- Development, evaluation, and validation of research techniques for the study of environmental microplastic contamination
- Investigation of the health effects of plastic pollution in animals and ecosystems
- Application, evaluation, and validation of clinical diagnostics or therapeutics in zoological species
- Other clinical research in the field of Zoological Medicine
To contact Dr. Gjeltema - jgjeltema@ucdavis.edu
Michelle Hawkins, VMD Dipl. ABVP (Avian Practice)
Anesthesia, analgesia, wildlife
California Raptor Center and One Health Institute
(See also: Anesthesia/Pain Management)
Dr. Hawkins research areas are in advancing clinical and research techniques aimed at improving the health of wild birds of prey through rehabilitation. Currently for this 2025 call, Dr. Hawkins has a project with Dr. Christina Harvey from Dept of Mechanical and Aerospace Engineering (DMAE) to explore wing morphology changes associated with the rehabilitative success of raptors. The study will use cadavers to determine whether specific soft tissue damage (tendons, muscle) reduces the successful return to flight for these birds. We hypothesize certain tendon and muscle damaged in collisions changes the flight of these birds and may be detrimental to release. The successful student will work at both the California Raptor Center and DMAE sites (high-res motion capture cameras) to explore these questions.
Dr. Hawkins can be reached at mghawkins@ucdavis.edu.
Krista A. Keller, DVM, Dipl ACZM
VM: Medicine & Epidemiology
(see also: Microbiology/Parasitology)
I am a board-certified specialist in zoological medicine and my research, focused on of mycotic infections of reptiles, allows me (and my mentees) to ask clinically relevant questions to drive hypothesis-based research. I am interested in understanding all aspects of the host-microbe-environmental triad as it relates to infectious disease development to drive meaningful recommendations on the diagnosis and treatment of reptiles infected with mycotic agents.
My mentoring philosophy involves handing students a spark (an idea), then allowing them to light the fire (research and develop a research question) and helping them to appreciate all components of research from ideation, hypothesis creation, methodological planning, material list development, data collection and analysis, through dissemination on the local and national level.
STAR students will study elucidating factors surrounding mycotic infections in reptiles. Students will also be exposed to both project planning and design as well as laboratory based microbiological techniques (culture, pipette, dilutions).
I can be reached at kakell@ucdavis.edu.
Christine Kreuder Johnson, VMD, PhD
One Health Institute
(See also: Global Health, Epidemiology)
Dr. Kreuder Johnson is a Professor of Epidemiology and Ecosystem Health in the School of Veterinary Medicine and Director of the EpiCenter for Disease Dynamics at the One Health Institute at UC Davis. Her research focuses on wildlife population health and the impact of ecological processes on species at risk and patterns of disease transmission in marine and terrestrial wild animal populations. Recent activities investigate zoonotic disease spillover dynamics, viral host shifts, further characterization of the animal-human interface, and epidemiologic patterns facilitating zoonotic disease transmission and spread. She provides epidemiologic support to federal and state agencies during unusual outbreak events and directs global surveillance activities for the Emerging Pandemic Threats PREDICT program.
Contact info: ckjohnson@ucdavis.edu
Benjamin Sacks, Ph.D.
Veterinary Genetics Laboratory, Canid Genetics & Population Health
(See also: Genetics/Genomics)
The Canid Diversity and Conservation Laboratory specializes on ecology and conservation of wild canids and other carnivores, including the application of genetic techniques, disease surveillance, and field methods (see web site below). STAR students will initially learn necessary skills from students, technicians, and faculty, and will spend most of the summer collecting data for their project under faculty supervision.
Dr. Sacks can be reached via email at bnsacks@ucdavis.edu, or you can visit his website for more information.
Karen Shapiro, DVM, MPVM, PhD
VM: Pathology, Microbiology & Immunology
Dr. Shapiro is an infectious disease researcher focusing on transmission of zoonotic pathogens that pose a health risk to wildlife populations and people through water or food. Her research program targets the transport and fate of zoonotic pathogens in watersheds and coastal ecosystems; effects of landscape change and climate variability on disease transmission; impacts of water scarcity and impaired quality on human and animal population health, and food safety. In addition to her research program, Dr. Shapiro also oversees the VMTH parasitology diagnostic laboratory and provides expertise on protozoan pathogens in small, large and exotic animal patients. We have a new project focused on protozoan parasite transmission and ecology from land to sea. The work would involve processing environmental and/or clinical samples for DNA extraction, PCR and sequencing to identify Toxoplasma and Sarcocystis in hosts and environmental matrices.
CONTACT: kshapiro@ucdavis.edu
Esteban Soto-Martinez, MSc, DVM, PhD, Dipl. ACVM
VM: Medicine and Epidemiology (See also: Immunology, Microbiology, Pathology)
Dr. Esteban Soto is a board certified veterinary microbiologist who has an interest in aquatic animal health. Our laboratory main research interests are to understand the pathogenesis of important infectious diseases of wild and aquatic animals, and to develop strategies to protect animals from these diseases. Members in our laboratory study One Health, Aquatic Animal Disease, and Fish Disease through a combination of microbiological, molecular, and epidemiological methods. Current projects involve studying the ecology, diversity and host-pathogen interaction of Francisella noatunensis, Piscirickettsia salmonis, Veronaea botryosa, Erysipelothrix rhusiopathiae, Flavobacterium spp., Saprolegnia ferax, Koi herpes virus and other fish pathogens; and studying the ecology, diversity and host-pathogen interaction of hypermucoid Klebsiella pneumoniae in marine mammals.
Please email Dr. Soto-Martinez for more information - sotomartinez@ucdavis.edu
Lisa A. Tell, DVM
Department of Medicine and Epidemiology (See also: Food Animal Medicine/Food Safety, Pharmacology/Toxicology)
Dr. Tell is the Director of the Veterinary Drug Residue Laboratory and serves as the Regional Director for the Minor Use Animal Drug and the Food Animal Avoidance Database Programs. She has been a full-time faculty member of the School of Veterinary Medicine since 1994. Dr. Tell's research interests are veterinary drug pharmacokinetic studies for zoological and food animal species. She has a particular interest in treatment options for fungal diseases in birds.
Research studies in Dr. Tell's laboratory vary from pivotal data studies seeking label claims for minor food animal species (particularly goats) to clinically related pharmacokinetic studies for companion birds. Many of the food animal related studies focus on drug residues and residue avoidance in the interest of protecting public health. Research experience gained from working in Dr. Tell's laboratory varies from the in life phase of the pharmacokinetic study to the good laboratory practice bench-top research activities.
Dr. Tell is also the lead investigator for the UC Davis Hummingbird Health program that investigates diseases in free ranging hummingbirds in California. This program bands the birds, takes biometric measurements, and evaluates birds for infectious diseases.
PLEASE CONTACT DR. TELL : latell@ucdavis.edu
Michael Ziccardi, DVM, PhD
VM: Karen C. Drayer Wildlife Health Center and VM: Medicine & Epidemiology
(See also: Epidemiology, Aquatic Health/Ecotoxicology)
Dr. Michael Ziccardi DVM MPVM PhD is Executive Director of the One Health Institute, and Director of the Oiled Wildlife Care Network (OWCN) and California Veterinary Emergency Team (CVET). His work focuses on global oiled wildlife preparedness, response, and research as well as statewide domestic animal and livestock disaster response. Ziccard's clinical and research areas of expertise are in free-ranging wildlife health, with an emphasis on epidemiology. His current research focus is on the effects of petroleum on marine species.
Please email Dr. Ziccardi for more information at: mhziccardi@ucdavis.edu