Publications
View citations of publications by National Wildlife Health Center scientists since our founding in 1975. Access to full-text is provided where possible.
Wildlife Health Bulletins
Wildlife Health Bulletins
Wildlife Health Bulletins are distributed to natural resource/conservation agencies to provide and promote information exchange about significant wildlife health threats.
Wildlife Disease Case Definitions
Wildlife Disease Case Definitions
Case definitions provide a standardized, science-based set of criteria for diagnosing disease and pathogens. This manual provides case definitions for selected diseases of importance to wildlife in Canada and the United States.
Filter Total Items: 1660
Protozoal hepatitis in a western burrowing owl (Athene cunicularia hypugaea) Protozoal hepatitis in a western burrowing owl (Athene cunicularia hypugaea)
A western burrowing owl (Athene cunicularia hypugaea) found dead in southern California had many light-colored lesions visible grossly on its liver, and histopathology revealed extensive necrosis throughout the hepatic parenchyma. Single-celled organisms were seen in clear spaces within the areas of necrosis. The owl was diagnosed with protozoal hepatitis.
Authors
J. Christian Franson
Using decision analysis to support proactive management of emerging infectious wildlife diseases Using decision analysis to support proactive management of emerging infectious wildlife diseases
Despite calls for improved responses to emerging infectious diseases in wildlife, management is seldom considered until a disease has been detected in affected populations. Reactive approaches may limit the potential for control and increase total response costs. An alternative, proactive management framework can identify immediate actions that reduce future impacts even before a disease...
Authors
Evan H. Campbell Grant, Erin L. Muths, Rachel A. Katz, Stefano Canessa, M. J. Adams, Jennifer R. Ballard, Lee Berger, Cheryl J. Briggs, Jeremy T. H. Coleman, Matthew J. Gray, M. Camille Harris, Reid N. Harris, Blake R. Hossack, Kathryn P. Huyvaert, Jonathan E. Kolby, Karen R. Lips, Robert E. Lovich, Hamish I. McCallum, Joseph R. Mendelson, Priya Nanjappa, Deanna H. Olson, Jenny G. Powers, Katherine L. D. Richgels, Robin E. Russell, Benedikt R. Schmidt, Annemarieke Spitzen-van der Sluijs, Mary Kay Watry, Douglas C. Woodhams, C. LeAnn White
Report of the workshop on evidence-based design of national wildlife health programs Report of the workshop on evidence-based design of national wildlife health programs
Summary This report summarizes a Wildlife Disease Association sponsored workshop held in 2016. The overall objective of the workshop was to use available evidence and selected subject matter expertise to define the essential functions of a National Wildlife Health Program and the resources needed to deliver a robust and reliable program, including the basic infrastructure, workforce...
Authors
Natalie T. Nguyen, J. Paul Duff, Dolores Gavier-Widen, Tiggy Grillo, Hongxuan He, Hang Lee, Parntep Ratanakorn, Jolianne M. Rijks, Marie-Pierre Ryser-Degiorgis, Jonathan M. Sleeman, Craig Stephen, Toni Tana, Marcela Uhart, Patrick Zimmer
A dynamic spatio-temporal model for spatial data A dynamic spatio-temporal model for spatial data
Analyzing spatial data often requires modeling dependencies created by a dynamic spatio-temporal data generating process. In many applications, a generalized linear mixed model (GLMM) is used with a random effect to account for spatial dependence and to provide optimal spatial predictions. Location-specific covariates are often included as fixed effects in a GLMM and may be collinear...
Authors
Trevor J. Hefley, Mevin Hooten, Ephraim M. Hanks, Robin Russell, Daniel P. Walsh
Identification of two novel reassortant avian influenza a (H5N6) viruses in whooper swans in Korea, 2016 Identification of two novel reassortant avian influenza a (H5N6) viruses in whooper swans in Korea, 2016
Background On November 20, 2016 two novel strains of H5N6 highly pathogenic avian influenza virus (HPAIVs) were isolated from three whooper swans (Cygnus cygnus) at Gangjin Bay in South Jeolla province, South Korea. Identification of HPAIVs in wild birds is significant as there is a potential risk of transmission of these viruses to poultry and humans.Results Phylogenetic analysis...
Authors
Jipseol Jeong, Chanjin Woo, S. Ip, Injung An, Youngsik Kim, Kwanghee Lee, Seong-Deok Jo, Kidong Son, Saemi Lee, Jae-Ku Oem, Seung-Jun Wang, Yongkwan Kim, Jeonghwa Shin, Jonathan M. Sleeman, Weonhwa Jheong
Datasheet: Pseudogymnoascus destructans (white-nose syndrome fungus) Datasheet: Pseudogymnoascus destructans (white-nose syndrome fungus)
Pseudogymnoascus destructans is a psychrophilic (cold-loving) fungus that causes white-nose syndrome (WNS), an emerging disease of North American bats that has caused unprecedented population declines. The fungus is believed to have been introduced to North America from Europe or Asia (where it is present but does not cause significant mortality), but the full extent of its native range...
Authors
David S. Blehert, Emily W. Lankau
When mechanism matters: Bayesian forecasting using models of ecological diffusion When mechanism matters: Bayesian forecasting using models of ecological diffusion
Ecological diffusion is a theory that can be used to understand and forecast spatio-temporal processes such as dispersal, invasion, and the spread of disease. Hierarchical Bayesian modelling provides a framework to make statistical inference and probabilistic forecasts, using mechanistic ecological models. To illustrate, we show how hierarchical Bayesian models of ecological diffusion...
Authors
Trevor J. Hefley, Mevin Hooten, Robin E. Russell, Daniel P. Walsh, James A. Powell
The effects of drought and fire in the extirpation of an abundant semi-aquatic turtle from a lacustrine environment in the southwestern USA The effects of drought and fire in the extirpation of an abundant semi-aquatic turtle from a lacustrine environment in the southwestern USA
We documented a significant mortality event affecting a southwestern pond turtle (Actinemys pallida) population living in a lake in southern California, USA. The area around the lake was impacted by a large wildland fire in 2013 that occurred during a protracted drought. As the mortality event was still unfolding, we collected data in 2014 on water quality, demographic structure, and...
Authors
Jeffrey E. Lovich, Mari Quillman, Brian Zitt, Adam Schroeder, David E. Green, Charles B. Yackulic, Paul Gibbons, Eric Goode
Pufferfish mortality associated with novel polar marine toxins in Hawaii Pufferfish mortality associated with novel polar marine toxins in Hawaii
Fish die-offs are important signals in tropical marine ecosystems. In 2010, a mass mortality of pufferfish in Hawaii (USA) was dominated by Arothron hispidus showing aberrant neurological behaviors. Using pathology, toxinology, and field surveys, we implicated a series of novel, polar, marine toxins as a likely cause of this mass mortality. Our findings are striking in that (1) a marine...
Authors
Thierry M. Work, Perer D. R. Moeller, Kevin R. Beauchesne, Julie Dagenais, Renee Breeden, Robert Rameyer, Willliam A. Walsh, Melanie Abecassis, Donald R. Kobayashi, Carla M. Conway, James Winton
Cyanide poisoning of a Cooper’s hawk (Accipiter cooperii) Cyanide poisoning of a Cooper’s hawk (Accipiter cooperii)
A Cooper’s hawk (Accipiter cooperii) was found dead in a ditch leading from a heap leach pad at a gold mine in Nevada. Observations at autopsy included an absence of external lesions, traces of subcutaneous and coronary fat, no food in the upper gastrointestinal tract, and no lesions in the viscera. Cyanide concentrations (µg/g ww) were 5.04 in blood, 3.88 in liver, and 1.79 in brain. No...
Authors
J. Christian Franson
Geomyces and Pseudogymnoascus: Emergence of a primary pathogen, the causative agent of bat white-nose syndrome Geomyces and Pseudogymnoascus: Emergence of a primary pathogen, the causative agent of bat white-nose syndrome
Geomyces and Pseudogymnoascus (Fungi, Ascomycota, Leotiomycetes, aff. Thelebolales) are closely related groups of globally occurring soil-associated fungi. Recently, these genera of fungi have received attention because a newly identified species, Pseudogymnoascus (initially classified as Geomyces) destructans, was discovered in association with significant and unusual mortality of...
Authors
Michelle L. Verant, Andrew M. Minnis, Daniel L. Lindner, David S. Blehert
Pre-mining trace element and radiation exposure to biota from a breccia pipe uranium mine in the Grand Canyon (Arizona, USA) watershed Pre-mining trace element and radiation exposure to biota from a breccia pipe uranium mine in the Grand Canyon (Arizona, USA) watershed
The risks to wildlife and humans from uranium (U) mining in the Grand Canyon watershed are largely unknown. In addition to U, other co-occurring ore constituents contribute to risks to biological receptors depending on their toxicological profiles. This study characterizes the pre-mining concentrations of total arsenic (As), cadmium (Cd), copper (Cu), lead (Pb), mercury (Hg), nickel (Ni)...
Authors
Jo Ellen Hinck, Danielle M. Cleveland, William G. Brumbaugh, Greg Linder, Julia S. Lankton