Results 11 to 20 of about 6,899 (231)

Changes in movement, habitat use, and response to human disturbance accompany parturition events in bighorn sheep (Ovis canadensis) [PDF]

Movement Ecology, 2023
Parturition and the early neonatal period are critical life history stages in ungulates with considerable implications for population growth and persistence.
Aidan Brushett, Jesse Whittington, Bryan Macbeth, John M. Fryxell   +3 more
doaj   +2 more sources

Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis). [PDF]

Int J Parasitol Parasites Wildl, 2021
Psoroptes are a non-burrowing, ectoparasitic, mange-causing mite that has been documented in American bighorn sheep populations throughout the 19th and 20th centuries; however, it was not seen on Canadian bighorn sheep until 2006. The aim of this study was to determine the potential source of the Psoroptes outbreak in Canadian bighorn sheep ...
Hering AM, Chilton NB, Epp T, Schwantje HM, Cassirer F, Walker A, McLean C, Thampy PR, Hanak E, Wolff P, Drew M, Bardsley KD, Woodbury M.   +12 more
europepmc   +5 more sources

Harnessing cross-species alignment to discover SNPs and generate a draft genome sequence of a bighorn sheep (Ovis canadensis). [PDF]

BMC Genomics, 2015
Background: Whole genome sequences (WGS) have proliferated as sequencing technology continues to improve and costs decline. While many WGS of model or domestic organisms have been produced, a growing number of non-model species are also being sequenced ...
Miller JM, Moore SS, Stothard P, Liao X, Coltman DW.   +4 more
europepmc   +4 more sources

Disease and predation: sorting out causes of a bighorn sheep (Ovis canadensis) decline. [PDF]

PLoS ONE, 2014
Estimating survival and documenting causes and timing of mortality events in neonate bighorn sheep (Ovis canadensis) improves understanding of population ecology and factors influencing recruitment.
Joshua B Smith, Jonathan A Jenks, Troy W Grovenburg, Robert W Klaver   +3 more
doaj   +2 more sources

Characterizing population and individual migration patterns among native and restored bighorn sheep (Ovis canadensis) [PDF]

Ecology and Evolution, 2019
Migration evolved as a behavior to enhance fitness through exploiting spatially and temporally variable resources and avoiding predation or other threats.
Blake Lowrey, Kelly M. Proffitt, Douglas E. McWhirter, Patrick J. White, Alyson B. Courtemanch, Sarah R. Dewey, Hollie M. Miyasaki, Kevin L. Monteith, Julie S. Mao, Jamin L. Grigg, Carson J. Butler, Ethan S. Lula, Robert A. Garrott   +12 more
doaj   +2 more sources

Waterhole detection using a vegetation index in desert bighorn sheep (Ovis canadensis cremnobates) habitat. [PDF]

PLoS ONE, 2019
In arid ecosystems, desert bighorn sheep are dependent on natural waterholes, particularly in summer when forage is scarce and environmental temperatures are high.
Jonathan Gabriel Escobar-Flores, Sarahi Sandoval, Raul Valdez, Eahsan Shahriary, Jorge Torres, Sergio Alvarez-Cardenas, Patricia Gallina-Tessaro   +6 more
doaj   +2 more sources

Interspecific carnivore competition and ungulate predation correlate with predator species richness. [PDF]

Ecology
Abstract Competition for resources underlies the development of ecological community structure and function. Niche compression occurs when species reduce resource use due to competition, and niche complementarity posits resource competition should occur sequentially among habitat, time, and food.
Wehr NH, Boone HM, van den Bosch M, Zubiria Perez A, Wehr KL, Wehr SR, Belant JL.   +6 more
europepmc   +2 more sources

Preferencias forrajeras del borrego cimarrón (Ovis canadensis, Shaw) en Baja California, México

Revista Mexicana de Ciencias Pecuarias
El propósito de esta investigación fue analizar la composición y preferencias alimentarias del borrego cimarrón en las Sierras Juárez y Santa Isabel durante la época húmeda y seca de 2021-2022. Para evaluar la disponibilidad de forrajee implementaron 17
Ángel Méndez-Rosas, Fernando Isaac Gastelum-Mendoza, Guillermo Romero-Figueroa , Israel Guerrero-Cárdenas , Hiram Rivera-Huerta, Enrique de Jesús Ruiz-Mondragón , Rafael Paredes-Montesinos , Luz Adriana Tapia-Cabazos   +7 more
doaj   +3 more sources

Estrategias forrajeras del borrego cimarrón (Ovis canadensis mexicana) en el noreste de México

Ecosistemas y Recursos Agropecuarios
Comprender las preferencias alimentarias es importante para la conservación del borrego cimarrón. El objetivo fue identificar la selección de su dieta en Coahuila, México.
Fernando Isaac Gastelum-Mendoza, Eloy Alejandro Lozano-Cavazos, Fernando Noel González-Saldívar, José Isidro Uvalle-Sauceda, Guillermo Romero-Figueroa, Ricardo Serna-Lagunes, Luis Antonio Tarango-Arámbula, César Martín Cantú-Ayala   +7 more
doaj   +3 more sources

Outcomes of Selective Removals for Control of Pneumonia in a Bighorn Sheep Metapopulation. [PDF]

Ecol Evol
We conducted a selective removal experiment to test the hypothesis that pneumonia is maintained in bighorn sheep populations by chronic carriers of the bacterium Mycoplasma ovipneumoniae. Elimination of M. ovipneumoniae in two of three treatment populations following removals led to significant increases in juvenile survival and population growth and ...
Cassirer EF, Besser TE.
europepmc   +2 more sources