Results 181 to 190 of about 12,273 (212)
Twinning in Bighorn Sheep [PDF]
The Journal of Wildlife Management, 1966 Twelve bighorn ewes (Ovis canadensis), killed by vehicular traffic in southern British Columbia, were examined for pregnancy; 11 were pregnant, 4 of them were carrying twins. The absence of twins among bighorn sheep frequently has been noted by biologists recording their field observations. A recent author (Woodgerd, W. 1964.
openaire +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
MAXILLARY CANINES IN BIGHORN SHEEP
The Southwestern Naturalist, 2006Abstract Bighorn sheep (Ovis canadensis) occasionally have small, procumbent maxillary canines that do not penetrate the gums. However, the frequency of these vestigial teeth is only 3%. We collected 25 skulls from an isolated and indigenous population of bighorn sheep in the Silver Bell Mountains, Arizona.
Brian D. Jansen +2 more
openaire +2 more sources
Ingestion of Grit by Bighorn Sheep [PDF]
The Journal of Wildlife Management, 1974 During spring and early summer in 1970 grit was found to comprise a considerable percentage of the dry weight of feces in two Alberta bighorn sheep (Ovis canadensis) herds. Similar percentages of fecal grit in domestic sheep in New Zealand have been correlated with high tooth wear, a factor which results in such impaired metabolic performance that ...
openaire +1 more source
Bluetongue in the Desert Bighorn Sheep
The Journal of Wildlife Management, 1967A young desert bighorn ram (Ovis canadensis) approximately 8 months old was found ill in its natural habitat. Inoculation of a suspension of its lung tissue into domestic sheep resulted in lesions typical of bluetongue disease. Serological studies confirmed the diagnosis.
Jack Ward Thomas +3 more
openaire +2 more sources
Inbreeding depression in captive bighorn sheep [PDF]
Animal Conservation, 2001 We estimated the extent of inbreeding depression for juvenile survival in 589 captive-born bighorn sheep, and, unlike an earlier report, found no evidence of significant inbreeding depression. There did not appear to be any overall effect of year of birth, place of birth, subspecies, sex or ancestral inbreeding upon the viability of inbred animals as ...
Steven T. Kalinowski, Philip W. Hedrick
openaire +1 more source
Dynamics of Pneumonia in a Bighorn Sheep Metapopulation [PDF]
The Journal of Wildlife Management, 2007 Abstract: We investigated the dynamics of 8 populations of a bighorn sheep (Ovis canadensis) metapopulation in Hells Canyon, USA from 1997 to 2003. Pneumonia was the most common cause (43%) of adult mortality and the primary factor limiting population growth.
Anthony R. E. Sinclair +1 more
openaire +1 more source
Use of agave by desert bighorn sheep
The Southwestern Naturalist, 2014Abstract We hypothesized that, if agave (Agave) were used by desert ungulates as a source of moisture, they would be used more during drought than during periods with average or above-average rainfall. From 2004–2012, we counted the number of stalks of agave used by Nelson's bighorn sheep (Ovis canadensis nelsoni) in 10.3 ha in Deep Canyon, Santa Rosa ...
Duncan Harkleroad, Paul R. Krausman
openaire +2 more sources
Cooperative Defense by Female Bighorn Sheep
Northwestern Naturalist, 1994Observations of cooperative defense against predators by bighorn sheep (Ovis canadensis) are rare. Shank (1977) and Woolf and O'Shea (1968) observed cooperative anti-predator defense by O. canadensis rams against coyotes (Carlis latrans), and Hornocker (1969) reported group defense by three ewes against a bobcat (Lynx rutus).
David R. Stevens, Nike J. Goodson
openaire +2 more sources
TRANSPLACENTAL TRANSMISSION OF Protostrongylus SPP. IN BIGHORN SHEEP
Journal of Wildlife Diseases, 1972Third-stage larvae of Protostrongylus spp. were recovered from the liver and lungs of a bighorn sheep foetus and from the placenta of the ewe.
Carol J. Metzger +2 more
openaire +3 more sources
Bighorn sheep from Yakutia [PDF]
Doklady Biological Sciences, 2011 P. R. Nogovitsyn +3 more
openaire +2 more sources