Results 61 to 70 of about 261,975 (279)

OPPORTUNISTIC SURVEILLANCE OF CAPTIVE AND FREE-RANGING BIGHORN SHEEP (OVIS CANADENSIS) IN COLORADO, USA, FOR TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES

Journal of Wildlife Diseases, 2021
: Bighorn sheep (Ovis canadensis) are predicted to have a degree of susceptibility to the transmissible spongiform encephalopathies (TSE) chronic wasting disease and scrapie.
K. Fox, Stefanie M. Muller, T. Spraker, Mary E. Wood, Michael W. Miller   +4 more
semanticscholar   +1 more source

Shared Bacterial and Viral Respiratory Agents in Bighorn Sheep (Ovis canadensis), Domestic Sheep (Ovis aries), and Goats (Capra hircus) in Montana

Veterinary Medicine International, 2011
Transmission of infectious agents from livestock reservoirs has been hypothesized to cause respiratory disease outbreaks in bighorn sheep (Ovis canadensis), and land management policies intended to limit this transmission have proven controversial.
David S. Miller, Glen C. Weiser, Keith Aune, Brent Roeder, Mark Atkinson, Neil Anderson, Thomas J. Roffe, Kim A. Keating, Phillip L. Chapman, Cleon Kimberling, Jack Rhyan, P. Ryan Clarke   +11 more
doaj   +1 more source

Hemorrhagic Disease in Bighorn Sheep in Arizona [PDF]

Journal of Wildlife Diseases, 2002
Two bighorn sheep from Arizona (USA) were submitted for necropsy. One was a Rocky Mountain bighorn (Ovis canadensis canadensis) and the other was a desert bighorn (Ovis canadensis mexicana). Both had lesions consistent with those of hemorrhagic disease (HD).
Ted H, Noon, Shannon Lynn, Wesche, Dave, Cagle, Daniel G, Mead, Edward J, Bicknell, Gregory A, Bradley, Shawnee, Riplog-Peterson, Dave, Edsall, Carlos, Reggiardo   +8 more
openaire   +2 more sources

Sharp gene pool transition in a population affected by phenotype-based selective hunting

, 2005
We use a microscopic model of population dynamics, a modified version of the well known Penna model, to study some aspects of microevolution. This research is motivated by recent reports on the effect of selective hunting on the gene pool of bighorn ...
Ashley, Coltman, Coltman, Conover, E. Brigatti, I. Roditi, J. S. Sá Martins, Law, Luz-Burgoa, Martins, Palumbi, Penna, Penna, Ticona   +13 more
core   +2 more sources

HELMINTH PARASITES OF BIGHORN SHEEP IN OREGON [PDF]

Journal of Wildlife Diseases, 1977
The lungs and gastrointestinal tracts from 18 hunter-killed bighorn rams (Ovis canadensis californiana) were examined in total or in part for helminth parasites during a two-year study of three separate herds in Eastern Oregon. Prevalence was 100% with the lungworm Protostrongylus stilesi.
T P, Kistner, S M, Matlock, D, Wyse, G E, Mason   +3 more
openaire   +2 more sources

Puma predation on radiocollared and uncollared bighorn sheep

BMC Research Notes, 2009
Background We used Global Positioning System (GPS) data from radiocollared pumas (Puma concolor) to identify kill sites of pumas preying upon an endangered population of bighorn sheep (Ovis canadensis) in southern California.
Johnson Christine K, Rubin Esther S, Clemenza Sean M, Botta Randall A, Boyce Walter M   +4 more
doaj   +1 more source

Direct and indirect effects of cougar predation on bighorn sheep fitness.

Ecology
Predation has direct effects on prey population dynamics through mortality, and it can induce indirect effects through fear. The indirect effects of predation have been documented experimentally, but few studies have quantified them in nature so that ...
Zachary Cloutier, M. Festa‐Bianchet, F. Pelletier   +2 more
semanticscholar   +1 more source

Drivers of variation in the population dynamics of bighorn sheep

Ecosphere, 2021
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J., Terrill Paterson, K. Proffitt, J. Rotella, D. McWhirter, Robert Garrott   +5 more
semanticscholar   +1 more source

Elaeophorosis in Bighorn Sheep in New Mexico [PDF]

Journal of Wildlife Diseases, 1999
Two bighorn sheep (Ovis canadensis) in New Mexico (USA) were found to be naturally infected with Elaeophora schneideri. An adult ram examined in 1997 in the Fra Cristobal Mountains had 26 nematodes in the carotid and iliac arteries, and microfilariae were present in the skin, nasal mucosa, brain, and lungs.
W, Boyce, A, Fisher, H, Provencio, E, Rominger, J, Thilsted, M, Ahlm   +5 more
openaire   +2 more sources

Cougar Dispersal and Natal Homing in a Desert Environment

, 2018
We present a review of cougar dispersal literature and the first evidence of natural (i.e., unmanipulated) homing behavior by a dispersing male cougar (Puma concolor) that sustained severe injuries crossing the northern Mojave Desert.
Choate, David M., Longshore, Kathleen M., Thompson, Daniel B.   +2 more
core   +1 more source