scholarly journals MOUNTAIN LIONS (PUMA CONCOLOR) RESIST LONG-TERM DIETARY EXPOSURE TO CHRONIC WASTING DISEASE

2022 ◽  
Vol 58 (1) ◽  
Author(s):  
Lisa L. Wolfe ◽  
Karen A. Fox ◽  
Karen A. Griffin ◽  
Michael W. Miller
Keyword(s):  
Chronic Wasting Disease ◽  
Puma Concolor ◽  
Dietary Exposure ◽  
Wasting Disease ◽  
Mountain Lions

scholarly journals A method that accounts for differential detectability in mixed samples of long‐term infections with applications to the case of chronic wasting disease in cervids

2018 ◽  
Vol 10 (1) ◽  
pp. 134-145 ◽  
Author(s):  
Hildegunn Viljugrein ◽  
Petter Hopp ◽  
Sylvie L. Benestad ◽  
Erlend B. Nilsen ◽  
Jørn Våge ◽  
...  
Keyword(s):  
Chronic Wasting Disease ◽  
Wasting Disease ◽  
Mixed Samples

scholarly journals Mountain lions prey selectively on prion-infected mule deer

2009 ◽  
Vol 6 (2) ◽  
pp. 209-211 ◽  
Author(s):  
Caroline E. Krumm ◽  
Mary M. Conner ◽  
N. Thompson Hobbs ◽  
Don O. Hunter ◽  
Michael W. Miller
Keyword(s):  
Puma Concolor ◽  
Mule Deer ◽  
Odocoileus Hemionus ◽  
Disease Prevalence ◽  
Front Range ◽  
Same Sex ◽  
Wasting Disease ◽  
Mountain Lions ◽  
Mountain Lion ◽  
Prey Items

The possibility that predators choose prey selectively based on age or condition has been suggested but rarely tested. We examined whether mountain lions ( Puma concolor ) selectively prey upon mule deer ( Odocoileus hemionus ) infected with chronic wasting disease, a prion disease. We located kill sites of mountain lions in the northern Front Range of Colorado, USA, and compared disease prevalence among lion-killed adult (≥2 years old) deer with prevalence among sympatric deer taken by hunters in the vicinity of kill sites. Hunter-killed female deer were less likely to be infected than males (odds ratios (OR) = 0.2, 95% confidence intervals (CI) = 0.1–0.6; p = 0.015). However, both female (OR = 8.5, 95% CI = 2.3–30.9) and male deer (OR = 3.2, 95% CI = 1–10) killed by a mountain lion were more likely to be infected than same-sex deer killed in the vicinity by a hunter ( p < 0.001), suggesting that mountain lions in this area actively selected prion-infected individuals when targeting adult mule deer as prey items.

Hunter Concerns and Intention to Hunt in Forested Areas Affected by Wildlife Disease

2021 ◽  
Author(s):  
Abigail Meeks ◽  
Neelam C Poudyal ◽  
Lisa I Muller ◽  
Chuck Yoest
Keyword(s):  
Chronic Wasting Disease ◽  
Human Health Risk ◽  
Wildlife Disease ◽  
Wildlife Diseases ◽  
Hunting Behavior ◽  
Wasting Disease ◽  
Private Lands ◽  
Deer Hunting ◽  
Short And Long Term

Abstract Deer hunting is a major forest-based recreation activity in the US South. However, the recent discovery of chronic wasting disease (CWD) threatens deer hunting in the region. Stakeholders are interested in understanding how hunters perceive the risk and change their hunting behavior. This study found a significant change in hunters’ concerns after the first deer season since the discovery of CWD in Tennessee, USA. Results also showed that hunters’ short- and long-term intentions to hunt deer in the region were positively related to previous experience of hunting in CWD-affected areas, beliefs in the effectiveness of herd reduction to control CWD, concerns regarding potential decline in deer quality and changes in hunting regulations due to CWD, and trust in wildlife agency action. Hunters who hunt on public land and were concerned with deer and human health risk were less likely to hunt in the CWD region. These results are useful in understanding hunter behavior in response to wildlife disease and identifying variables that may help project immediate as well as long-term change in hunting demand in affected regions. Study Implications As two-thirds of forestlands in the USA are under private ownership and public hunting lands are limited or crowded in many regions, deer hunting occurs mostly on private lands. Managers of private and public forestlands that provide recreation access for hunting benefit from a better understanding of how wildlife diseases affect user perception and demand for deer hunting on their lands. One such disease issue that has threatened the hunting industry in the nation is chronic wasting disease in white-tailed deer. Results from this study inform on how hunters perceive the risk of disease, how their relative tolerance changes over time, and what factors determine their intention to hunt in forests with diseased deer. These findings are useful in understanding hunter’s behavior in response to wildlife disease in forest lands and highlight variables that may determine hunting demand in affected regions both in the short- and long-term.

scholarly journals Reduction of Chronic Wasting Disease Prion Seeding Activity following Digestion by Mountain Lions

mSphere ◽  
2021 ◽  
Author(s):  
Chase Baune ◽  
Lisa L. Wolfe ◽  
Kristen C. Schott ◽  
Karen A. Griffin ◽  
Andrew G. Hughson ◽  
...  
Keyword(s):  
Disease Control ◽  
Chronic Wasting Disease ◽  
Control Strategies ◽  
Target Species ◽  
Wasting Disease ◽  
Mountain Lions ◽  
In Captivity ◽  
In The Wild

CWD prions appear to spread naturally among susceptible cervid species in captivity and in the wild. A better understanding of all the ways these prions move, persist, and subsequently infect target species through the environment is critical to developing comprehensive disease control strategies.

scholarly journals Apparent stability masks underlying change in a mule deer herd with unmanaged chronic wasting disease

2022 ◽  
Vol 5 (1) ◽  
Author(s):  
Mark C. Fisher ◽  
Ryan A. Prioreschi ◽  
Lisa L. Wolfe ◽  
Jonathan P. Runge ◽  
Karen A. Griffin ◽  
...  
Keyword(s):  
Prion Disease ◽  
Chronic Wasting Disease ◽  
Puma Concolor ◽  
Mule Deer ◽  
Age Distribution ◽  
Adult Survival ◽  
Wasting Disease ◽  
Prion Infection ◽  
Apparent Prevalence ◽  
Prevalence Proportion

AbstractThe contagious prion disease “chronic wasting disease” (CWD) infects mule deer (Odocoileus hemionus) and related species. Unchecked epidemics raise ecological, socioeconomic, and public health concerns. Prion infection shortens a deer’s lifespan, and when prevalence (proportion of adults infected) becomes sufficiently high CWD can affect herd dynamics. Understanding population responses over time is key to forecasting long-term impacts. Here we describe unexpected stability in prevalence and abundance in a mule deer herd where CWD has been left unmanaged. High apparent prevalence (~30%) since at least 2005 likely drove observed changes in the proportion and age distribution of wild-type native prion protein (PRNP) gene homozygotes among deer sampled. Predation by mountain lions (Puma concolor) may be helping keep CWD in check. Despite stable appearances, prion disease nonetheless impairs adult survival and likely resilience in this deer herd, limiting its potential for growth despite refuge from hunter harvest and favorable habitat and winter conditions.

scholarly journals Chronic wasting disease: a cervid prion infection looming to spillover

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Alicia Otero ◽  
Camilo Duque Velásquez ◽  
Judd Aiken ◽  
Debbie McKenzie
Keyword(s):  
Chronic Wasting Disease ◽  
Control Points ◽  
Environmental Persistence ◽  
Wasting Disease ◽  
Prion Infection ◽  
Strain Diversity ◽  
Transmission Mechanisms ◽  
Infection Biology ◽  
Interspecies Infection

AbstractThe spread of chronic wasting disease (CWD) during the last six decades has resulted in cervid populations of North America where CWD has become enzootic. This insidious disease has also been reported in wild and captive cervids from other continents, threatening ecosystems, livestock and public health. These CWD “hot zones” are particularly complex given the interplay between cervid PRNP genetics, the infection biology, the strain diversity of infectious prions and the long-term environmental persistence of infectivity, which hinder eradication efforts. Here, we review different aspects of CWD including transmission mechanisms, pathogenesis, epidemiology and assessment of interspecies infection. Further understanding of these aspects could help identify “control points” that could help reduce exposure for humans and livestock and decrease CWD spread between cervids.

Chronic Wasting Disease Options of Surveillance in Carpathian Cervids: from the Identification of Characteristic Microscopic Pathologic Changes to Prionic Seeded Conversion and Amplification Assays

2001 ◽  
Vol 71 (3) ◽  
pp. 480-486
Author(s):  
Florica Barbuceanu ◽  
Stelian Baraitareanu ◽  
Stefania-Felicia Barbuceanu ◽  
Gabriel Predoi
Keyword(s):  
Enzyme Immunoassay ◽  
Diagnostic Tests ◽  
Chronic Wasting Disease ◽  
Rapid Diagnostic Tests ◽  
Diagnostic Methods ◽  
Wasting Disease ◽  
Western Immunoblotting ◽  
Negative Results ◽  
Antigen Capture ◽  
Confirmatory Tests

This paper describes the current diagnostic methods of Chronic Wasting Disease (CWD) in cervides used between 2013 and 2017 in Romania. The active surveillance of CWD involves the targeted groups screening by using rapid diagnostic tests (e.g., antigen capture enzyme immunoassay). If the first test does not provide certain negative results, then the confirmatory methods have been used, i.e. histopathology, immunohistochemistry and Western immunoblotting. These tests did not lead to the detection of CWD prions (PrPCWD) in Romania. This may be due to the absence or insufficient quantity of PrPCWD in samples, below the threshold of confirmatory tests.

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