Bryan Richards
Science and Products
Expanding Distribution of Chronic Wasting Disease
Chronic wasting disease (CWD) has been detected in 26 US states and three Canadian provinces in free-ranging cervids and/or commercial captive cervid facilities. CWD has been detected in free-ranging cervids in 25 states and two provinces and in captive cervid facilities in 17 states and three provinces.
Chronic Wasting Disease
Chronic wasting disease (CWD) is an emerging infectious disease that is fatal to free-ranging and captive animals in Cervidae, the deer family. CWD is one member of a family of diseases called transmissible spongiform encephalopathies (TSEs), and is thought to be caused by prions. CWD is the only TSE known to affect free-ranging wildlife.
Black-Light Detects White-Nose Syndrome in Bats
U.S. Geological Survey (USGS) scientists and collaborators discovered that long-wave ultraviolet (UV) light directed at the wings of bats with white-nose syndrome (WNS) produced points of distinctive orange-yellow fluorescence. The orange-yellow glow corresponds directly with microscopic skin lesions that define the current "gold standard" for diagnosing WNS. White-nose syndrome, a fungal...
A fatal illness with no vaccine: Chronic Wasting Disease
A geonarrtive that describes USGS research efforts addressing chronic wasting disease, or CWD, which affects white-tailed deer, mule deer, elk, and moose.
Habitat suitability for axis deer on the Hawaiian Island of Lanai
This dataset was developed to model habitat suitability for axis deer on the island of Lanai. Model parameters include: cloud cover at 1400 HST, ground surface slope, mean annual precipitation, NDVI, elevation, and bare soil. Datasets and indices derived for use in modeling efforts, as well as the suitability model developed for mouflon sheep, are included within this data release
Chronic wasting disease—Research by the U.S. Geological Survey and partners
IntroductionChronic wasting disease (CWD) is the only transmissible spongiform encephalopathy, a class of invariably fatal neurodegenerative mammalian diseases associated with a misfolded cellular prion protein found in wild free-ranging animals. Because it has a long incubation period, affected animals in Cervidae (the deer family; referred to as...
Hopkins, M. Camille; Carlson, Christina M.; Cross, Paul C.; Johnson, Christopher J.; Richards, Bryan J.; Russell, Robin E.; Samuel, Michael D.; Sargeant, Glen A.; Walsh, Daniel P.; Walter, W. DavidQuarterly wildlife mortality report July 2019
No abstract available.
Richards, Bryan J.; Dusek, Robert J.Quarterly wildlife mortality report April 2019
No abstract available.
Richards, Bryan J.; Grear, Daniel A.; White, C. LeAnn; Work, Thierry M.; Underwood, Emily AUSGS-NWHC Quarterly Wildlife Mortality Report - January 2019
The USGS National Wildlife Health Center (NWHC) Quarterly Mortality Report provides brief summaries of epizootic mortality and morbidity events by quarter. The write-ups, highlighting epizootic events and other wildlife disease topics of interest, are published in the Wildlife Disease Association quarterly newsletter. A link is provided in this...
Richards, Bryan J.; Bodenstein, Barbara; Dusek, Robert J.; Rocke, Tonie E.; Richgels, Katherine L. D.USGS-NWHC Quarterly Wildlife Mortality Report - October 2018
No abstract available.
Richards, Bryan J.; Dusek, Robert J.; Ballmann, Anne; Nguyen, Natalie T.USGS-NWHC Quarterly Wildlife Mortality Report - July 2018
No abstract available.
Richards, Bryan J.; Bodenstein, Barbara; Ballmann, Anne; St. Martin, MichelleUSGS-NWHC Quarterly Wildlife Mortality Report- April 2018
No abstract available.
Richards, Bryan J.; Bodenstein, Barbara; Ballmann, Anne; White, C. LeAnnChronic wasting disease—Status, science, and management support by the U.S. Geological Survey
The U.S. Geological Survey (USGS) investigates chronic wasting disease (CWD) at multiple science centers and cooperative research units across the Nation and supports the management of CWD through science-based strategies. CWD research conducted by USGS scientists has three strategies: (1) to understand the biology, ecology, and causes and...
Carlson, Christina M.; Hopkins, M. Camille ; Nguyen, Natalie T.; Richards, Bryan J.; Walsh, Daniel P.; Walter, W. DavidQuarterly wildlife mortality report - January 2018
No abstract available.
Richards, Bryan J.; Grear, Daniel A.; Ballmann, Anne; Dusek, Robert J.; Kaler, Robert; Kuletz, KathyUSGS-NWHC Quarterly Wildlife Mortality Report- October 2017
No abstract available
Richards, Bryan J.; Bodenstein, Barbara; Ballmann, Anne; White, C. LeAnn; Frattaroli, LeslieEndemic chronic wasting disease causes mule deer population decline in Wyoming
Chronic wasting disease (CWD) is a fatal transmissible spongiform encephalopathy affecting white-tailed deer (Odocoileus virginianus), mule deer (Odocoileus hemionus), Rocky Mountain elk (Cervus elaphus nelsoni), and moose (Alces alces shirasi) in North America. In southeastern Wyoming average annual CWD prevalence in mule deer exceeds 20%...
DeVivo, Melia T.; Edmunds, David R.; Kauffman, Matthew J.; Schumaker, Brant A.; Binfet, Justin; Kreeger, Terry J.; Richards, Bryan J.; Schatzl, Hermann M.; Cornish, ToddUSGS-NWHC Quarterly Wildlife Mortality Report- January 2017
No abstract available.
Richards, Bryan J.; Grear, Daniel A.; Ballmann, Anne; Dusek, Robert J.; Bodenstein, BarbaraPre-USGS Publications
API - Graphing Water Information System (GWIS)
GWIS (Graphing Water Information System) Javascript library can create time-series plots of information measured at USGS hydrologic data collection sites across the US. Developed by the USGS Texas Water Science Center, the user-friendly interface integrates the open-source...
A bull elk with chronic wasting disease
A bull elk with chronic wasting disease at Wind Cave National Park. The emaciated appearance and drooping ears are characteristic of latter stages of infection.
Lichens May Aid in Combating Deadly Chronic Wasting Disease in Wildlife
Certain lichens can break down the infectious proteins responsible for chronic wasting disease (CWD), a troubling neurological disease fatal to wild deer and elk and spreading throughout the United States and Canada, according to U.S. Geological Survey research published today in the journal PLoS ONE.