| survey of chronic sinusitis-induced skull anomalies in desert bighorn sheep. | bone anomalies were found in 20% of 630 skulls from desert bighorn sheep (ovis canadensis) representing populations of california bighorn (o canadensis californiana), lower california bighorn (o canadensis cremnobates), mexican bighorn (o canadensis mexicana), and nelson bighorn (o canadensis nelsoni) that are native to arizona, california, nevada, new mexico, and utah. the anomalies were extremely diverse, ranging from osteonecrosis within the matrix of the paranasal sinuses to extensive lysis ... | 1981 | 7327996 |
| the distribution of dermacentor hunteri and anaplasma sp. in desert bighorn sheep (ovis canadensis). | the ixodid tick dermacentor hunteri has been collected intermittently this century, primarily from desert bighorn sheep (ovis canadensis). anaplasma spp. are intraerythrocytic rickettsial parasites of ungulates and are vectored in the western united states by ticks of the genus dermacentor. we tested the hypotheses that d. hunteri would be found infesting all populations of desert bighorn, and that all infested populations would be seropositive for anaplasma sp. dermacentor hunteri was found on ... | 1997 | 9057693 |
| ecology of gastropod and bighorn sheep hosts of lungworm on isolated, semiarid mountain ranges in utah, usa. | isolated, nonmigratory populations of bighorn sheep (ovis canadensis) may experience high exposure to lungworms (protostrongylus spp.) through a build-up of fecal material. however, semiarid climates may hinder lungworm transmission by limiting terrestrial gastropods, the intermediate hosts. we assessed potential for lungworm transmission, documented occurrence of transmission, and identified habitat types where transmission was likely to occur on ranges of two recently introduced populations of ... | 2008 | 18263819 |
| comparison of two bacterial transport media for culture of tonsilar swabs from bighorn sheep ( ovis canadensis ) and mountain goats ( oreamnos americanus ). | duplicate tonsilar swabs were collected from 77 bighorn sheep ( ovis canadensis ) and 19 mountain goats ( oreamnos americanus ) in utah. swabs were refrigerated in bacterial transport medium or frozen in cryopreservation medium prior to bacteriologic culture. the cryopreservation medium yielded comparable or superior bacterial growth while permitting more flexibility in specimen shipment to the laboratory. | 2017 | 27669011 |