SciELO - Scientific Electronic Library Online

 
vol.66 número4Efecto de la riqueza de especies y estructura de la vegetación en el almacenamiento de carbono en sistemas agroforestales de la Amazonía, BoliviaDiversidad espacial y temporal de arañas en microhábitats de cultivos de Citrus sinensis (Rutaceae), Corrientes, Argentina índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Revista de Biología Tropical

versión On-line ISSN 0034-7744versión impresa ISSN 0034-7744

Resumen

GALLARDO, Hugo Sotelo; SALAS, Juan A. García  y  BALDERAS, Armando J. Contreras. Predation of bighorn sheep, Ovis canadensis (Artiodactila: Bovidae) and mule deer, Odocoileus hemionus (Artiodactila: Cervidae) by Puma concolor (Carnivora: Felidae) in Coahuila, México. Rev. biol. trop [online]. 2018, vol.66, n.4, pp.1496-1503. ISSN 0034-7744.  http://dx.doi.org/10.15517/rbt.v66i4.32247.

Small and isolated populations of bighorn sheep are vulnerable to predation by mountain lion in habitat sympatric with mule deer. Understanding the specific causes of death and survival is important for the development of conservation strategies for bighorn sheep and other ungulates that share the same habitat, such as mule deer. We evaluated and compared the rate of predation by puma in 12 bighorn sheep (10 females, two males) and 10 adult females of mule deer with radio collars through measure risk program (micromorts). The impact of predation in both populations of herbivores is evaluated through the estimation of densities of sheep and mule deer. 88 % (8/9) deaths by puma in bighorn sheep with an average monthly survival rate of 0.79 and predation rates due to puma range from 0.17 to 0.30. In mule deer predation due to puma was 83 % (5/6) with an average monthly survival rate of 0.86 and predation rates due to puma range from 0.10 to 0.25, however when comparing the mountain lion depredation rate we found a significant difference between species (Z = 1.826, df = 6, P = 0.05). The density in mule deer was 9x more that bighorn. The bighorn sheep being the prey most selected and the one most affected as the population with the lowest density.

Palabras clave : survival rate; bighorn; mule deer; mountain lion predation; Sierra Maderas del Carmen; translocate.

        · resumen en Español     · texto en Español     · Español ( pdf )