Results 21 to 30 of about 12,273 (212)
Abnormal Coloration in Bighorn Sheep (Ovis canadensis) [PDF]
, 2017 Despite no mention of abnormal coloration in bighorn sheep (Ovis canadensis) in two earlier reviews addressing that subject, leucism, piebaldism, and melanism do occur in that species.
Bleich, Vernon C.
core +2 more sources
SELECTION AND GENETIC (CO)VARIANCE IN BIGHORN SHEEP [PDF]
Evolution, 2005 Genetic theory predicts that directional selection should deplete additive genetic variance for traits closely related to fitness, and may favor the maintenance of alleles with antagonistically pleiotropic effects on fitness-related traits. Trait heritability is therefore expected to decline with the degree of association with fitness, and some genetic
David W. Coltman +3 more
openaire +3 more sources
Early synapsids neurosensory diversity revealed by CT and synchrotron scanning
The Anatomical Record, EarlyView.Abstract Non‐mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe ...
J. Benoit +6 more
wiley +1 more source
Interactions between Rocky Mountain Bighorn Sheep Ovis canadensis canadensis and Domestic Sheep Ovis aries and the Biological, Social, Economic, and Legal Implications of these Interactions on USDA Forest Service Lands in the Evanston/Mt. View Ranger District [PDF]
, 2012 Strong evidence exists indicating domestic sheep (Ovis aries) can infect Rocky Mountain bighorn sheep (Ovis canadensis canadensis), a United States Forest Service (USFS) Region 4 sensitive species, with pneumonia (Callan 1991; Foreyt 1989, 1992, 1994 ...
Herrera, Ashly Nicole
core +1 more source
Spatio‐temporal dynamics of pneumonia in bighorn sheep [PDF]
Journal of Animal Ecology, 2013 Summary Bighorn sheep mortality related to pneumonia is a primary factor limiting population recovery across western North America, but management has been constrained by an incomplete understanding of the disease. We analysed patterns of pneumonia‐caused mortality over 14 years in 16 interconnected bighorn sheep populations to gain insights into ...
Cassirer, E. Frances +6 more
openaire +4 more sources
Management considerations of moose life‐history characteristics in Colorado, USA
Wildlife Biology, EarlyView.Wildlife management agencies are obliged to provide evidence‐based management recommendations to stakeholders. However, allocation of resources towards the management of species is rarely uniform. The consideration of life‐history characteristics of moose offers wildlife managers a more robust understanding of population ecology, while also providing ...
Eric J. Bergman +3 more
wiley +1 more source
Bighorn Sheep Movements and Mineral Lick Use in Waterton-Glacier International Peace Park (Poster) [PDF]
, 2015 This study used bighorn sheep telemetry data collected in Glacier National Park, Waterton Lakes National Park, and the Blackfeet Reservation to examine bighorn sheep movements and use of known mineral licks.
Biel, Mark J. +2 more
core +1 more source
Wildlife Biology, EarlyView.Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley +1 more source
Wildlife Monographs, EarlyView.We found variable spatial and temporal patterns and predictability of plant phenological progression across 8 pronghorn ranges in Montana. We sampled potential exposure to phenology values for migrants and residents along spring movement paths and summer ranges and found that within herds and years the resident and migrant movement strategies conferred
Kelly M. Proffitt +4 more
wiley +1 more source
One-Year Progress Report for the Montana Statewide Bighorn Sheep Research Project [PDF]
, 2015 Restoration and conservation of bighorn sheep has been a challenge. Despite strong conservation efforts, bighorn sheep have not recovered to historic range and numbers as most other ungulates have.
Butler, Carson +3 more
core +1 more source