Publications

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observations on epizootiology and distribution of elaeophora schneideri in montana ruminants.seventy-four moose, 111 elk, 20 mule deer, 8 white-tailed deer, 26 prong-horn antelope, 42 domestic sheep and 3 bighorn sheep from montana or northwestern wyoming were examined post-mortem for evidence of elaeophora schneideri infection in 1973-74. fifteen percent of the mule deer and four percent of the moose were positive for adult arterial worms. this constitutes the first report of e. schneideri in mule deer in montana. no gross signs of blindness or other neurologic disorder were evident in ...1975127848
trypanosoma cervi kingston and morton, 1975 from mule deer, odocoileus hemionus, in wyoming.mensural values of blood stream stages and cross-transmission studies defined the trypanosome species from mule deer, odocoileus hemionus, as con-specific with trypanosoma cervi, the trypanosome found in elk from the same locality. trypanosomes were found in eight mule deer sampled in the spring and eight sampled in the winter in southeastern wyoming.1977839619
further studies on trypanosomers in game animals in wyoming.blood samples were collected from captive and free-ranging elk (cervus canadensis), mule deer (odocoileus hemionus), white-tailed deer, (odocoileus virginianus), black-tailed deer (odocoileus hemionus columbianus), pronghorn (antilocapra americana), moose (alces alces), and bighorn sheep (ovis canadensis) for cultural evidence of trypanosoma sp. infection. eleven of 188 (12%) hunter-killed elk, 22 of 37 (59%) free-ranging elk, and 79 of 119 (66%) captive elk were culture positive in 1973-74. par ...1976933315
bluetongue in free-ranging pronghorn antelope (antilocapra americana) in wyoming: 1976 and 1984.at least 3,200 pronghorn (antilocapra americana) died during a bluetongue (bt) epizootic in eastern wyoming during late september and early october 1976. in august and september 1984, another bt epizootic occurred in northeastern wyoming resulting in 300 known pronghorn deaths. in 17 pronghorn examined postmortem, hemorrhages and edema were the most common gross pathologic changes. microscopic changes included hemorrhage, edema, arterial fibrinoid necrosis, lymphoid depletion in splenic and lymp ...19882832621
plague in a free-ranging mule deer from wyoming. 19873820418
further studies on trypanosomes in game animals in wyoming ii.further studies on moose revealed trypanosomes in two captive moose (alces alces shirasi) and in 4 of 7 free-ranging moose in wyoming by blood culture. two free-ranging moose from utah were negative. one of two additional captive moose calves was positive for trypanosomes. trypanosomes also were detected in blood cultures of 8 of 39 american bison (bison bison) being brought into wyoming from nebraska. nineteen additional bison were negative for trypanosomes by blood cultures. identification of ...19817338978
association of moraxella ovis with keratoconjunctivitis in mule deer and moose in wyoming.six cases of infectious keratoconjunctivitis (ikc) in mule deer (odocoileus hemionus) and moose (alces alces) in wyoming (usa) were investigated during fall and winter of 1995 and 1996. excessive lacrimation, mucopurulent conjunctivitis, keratitis, and corneal opacity were observed in mule deer. moose had severe mucopurulent conjunctivitis, keratitis, and corneal ulceration. hemolytic, non-piliated moraxella ovis was isolated from two mule deer and two moose. we attempted to reproduce ikc in thr ...200010813605
epizootiology of chronic wasting disease in free-ranging cervids in colorado and wyoming.surveillance and epidemic modeling were used to study chronic wasting disease (cwd), a transmissible spongiform encephalopathy that occurs naturally among sympatric, free-ranging deer (odocoileus spp.) and rocky mountain elk (cervus elaphus nelsoni) populations in contiguous portions of northeastern colorado and southeastern wyoming (usa). we used clinical case submissions to identify endemic areas, then used immunohistochemistry to detect cwd-infected individuals among 5,513 deer and elk sample ...200011085429
bacteria and nematodes in the conjunctiva of mule deer from wyoming and utah.swabs of conjunctiva were collected from 44 live and 226 hunter-harvested mule deer (odocoileus hemionus) from wyoming and utah (usa). we identified 29 gram negative and 22 gram positive bacterial taxonomic categories, but many isolates from hunter-harvested animals were environmental contaminants. staphylococcus spp. and micrococcus spp. were the most common gram positive bacteria isolated, and enterobacter spp., escherichia coli, and pseudomonas spp. were common gram negative bacteria isolated ...200011085445
isolation of bovine viral diarrhea virus from a free-ranging mule deer in wyoming.a noncytopathic type 1a bovine viral diarrhea virus (bvdv) was isolated from a free-ranging yearling female mule deer (odocoileus hemionus) from northwestern wyoming (usa). the mule deer was emaciated, weak, and salivating, and arcanobacterium pyogenes was cultured from lung abscesses. bovine viral diarrhea virus was isolated from lung, however, bvdv antigen was not detected by immunohistochemistry. the bvdv genotype was determined by reverse transcriptase polymerase chain reaction and the rna s ...200111310881
chronic wasting disease of cervids.chronic wasting disease (cwd) has recently emerged in north america as an important prion disease of captive and free-ranging cervids (species in the deer family). cwd is the only recognized transmissible spongiform encephalopathy (tse) affecting free-ranging species. three cervid species, mule deer (odocoileus hemionus), white-tailed deer (o. virginianus), and rocky mountain elk (cervus elaphus nelsoni), are the only known natural hosts of cwd. endemic cwd is well established in southern wyomin ...200415148993
trypanosomes from mule deer, odocoileus hemionus in wyoming.examination of mule deer, odocoileus hemionus, from wyoming in spring, 1974 (8) and in winter of 1974-75 (8) revealed trypanosomes in all 16 deer. spring samples showed dividing epimastigotes as well as normal bloodstream forms. winter samples showed only normal blood stream forms. these differences are considered to be seasonally related.19751195494
iodine-129 in mule deer thyroids in the rocky mountain west.thyroids from mule deer (odocoileus hemionus) were collected in new mexico, colorado, wyoming and idaho and 129i/127i atom ratios were determined. iodine-129/127 atom ratios were significantly (p less than 0.005) different among states. ratios in wyoming and idaho control thyroids were significantly (p less than 0.05) larger than ratios in new mexico and colorado. fallout from past atmospheric nuclear tests at the nevada test site is suggested as a possible explanation for the differences in rat ...19836874350
dermatophilosis in a mule deer, odocoileus hemionus (rafinesque), from wyoming. 19846492327
spontaneous poxviral dermatitis and keratoconjunctivitis in free-ranging mule deer (odocoileus hemionus) in wyoming. 19853001374
echinococcus granulosus in gray wolves and ungulates in idaho and montana, usa.we evaluated the small intestines of 123 gray wolves (canis lupus) that were collected from idaho, usa (n=63), and montana, usa (n=60), between 2006 and 2008 for the tapeworm echinococcus granulosus. the tapeworm was detected in 39 of 63 wolves (62%) in idaho, usa, and 38 of 60 wolves (63%) in montana, usa. the detection of thousands of tapeworms per wolf was a common finding. in idaho, usa, hydatid cysts, the intermediate form of e. granulosus, were detected in elk (cervus elaphus), mule deer ( ...200919901399
ocular plague (yersinia pestis) in mule deer (odocoileus hemionus) from wyoming and oregon.although plague is relatively rare in wild ungulates, this report describes ocular lesions associated with yersinia pestis infection in three free-ranging mule deer (odocoileus hemionus) from wyoming and oregon, usa. all deer were observed antemortem and seemed to be blind. post-mortem examination revealed gross lesions of bilateral keratoconjunctivitis and/or panophthalmitis in the first two deer, but only partial retinal detachment in the third deer. microscopically, all deer had moderate-to-s ...200818957655
low frequency of prp genotype 225sf among free-ranging mule deer (odocoileus hemionus) with chronic wasting disease.the prion protein (prp) gene was characterized in 1482 free-ranging mule deer (odocoileus hemionus) from wyoming and colorado. using dna sequences from 363 deer, dimorphisms at codons 20 (aspartate/glycine) and 225 [serine (s)/phenylalanine (f)] were found; silent changes occurred at codons 131 (tyrosine) and 247 (isoleucine). the remaining samples were surveyed for codon 225 genotype and all were characterized for chronic wasting disease (cwd) infection status. a total of 112 deer with the geno ...200516033959
the population history of endogenous retroviruses in mule deer (odocoileus hemionus).mobile elements are powerful agents of genomic evolution and can be exceptionally informative markers for investigating species and population-level evolutionary history. while several studies have utilized retrotransposon-based insertional polymorphisms to resolve phylogenies, few population studies exist outside of humans. endogenous retroviruses are ltr-retrotransposons derived from retroviruses that have become stably integrated in the host genome during past infections and transmitted verti ...201724336966
identifying and prioritizing ungulate migration routes for landscape-level conservation.as habitat loss and fragmentation increase across ungulate ranges, identifying and prioritizing migration routes for conservation has taken on new urgency. here we present a general framework using the brownian bridge movement model (bbmm) that: (1) provides a probabilistic estimate of the migration routes of a sampled population, (2) distinguishes between route segments that function as stopover sites vs. those used primarily as movement corridors, and (3) prioritizes routes for conservation ba ...200920014575
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