Publications

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survey of hepatic and pulmonary helminths of wild cervids in alberta, canada.during the 1988 hunting season, livers and lungs from 263 mule deer (odocoileus hemionus hemionus), 198 moose (alces alces), 147 white-tailed deer (odocoileus virginianus), and 94 wapiti (cervus elaphus nelsoni) from alberta (canada) were collected for parasitological examination. most of the samples (89%) were submitted by big game hunters throughout the province. giant liver fluke (fascioloides magna) was found in 9% of 22 yearling and 29% of 65 adult wapiti; 4% of 161 adult moose; and 2% of 9 ...19902250321
locations of moose in northwestern canada with hair loss probably caused by the winter tick, dermacentor albipictus (acari: ixodidae).five hundred two trappers representing 389 registered traplines in northern alberta, northern british columbia, northwest territories and yukon territory (canada) responded to a questionnaire on the occurrence of hair loss and the winter tick (dermacentor albipictus) on moose (alces alces). results suggested that winter ticks may occur as far as 62 degrees n. several sightings of moose with presumed tick-induced hair loss near kluane lake, yukon territory, suggest the possibility of introduction ...19892761020
factors affecting transmission of larval winter ticks, dermacentor albipictus (packard), to moose, alces alces l., in alberta, canada.the larval stage of the winter tick, dermacentor albipictus, was studied under field conditions in central alberta, canada. larvae ascended vegetation in autumn, possibly in response to photoperiod. numbers found by flagging increased from early september to early october and decreased gradually to zero by december. larvae clumped on the tips of vegetation approximately 1-1.5 m off the ground, and did not exhibit a diurnal, vertical migration. activity was temperature dependent and no obvious pr ...19854032625
serologic evidence of arbovirus activity in a moose population in alberta. 19714361127
sarcocystis in wild ungulates in alberta.muscle samples from 557 wild ungulates in alberta, comprising seven species, were examined grossly and/or histologically for cysts of sarcocystis. sarcocystis was found in 100, 96, 94, 75, 75, 73, and 49% of the wapiti (cervus canadensis), moose (alces alces), bison (bison bison), mule deer (odocoileus hemionus), bighorn sheep (ovis canadensis), mountain goat (oreamnos americanus), and white-tailed deer (o. virginianus), respectively.19806780701
population genetic structure and the effect of founder events on the genetic variability of moose, alces alces, in canada.moose, alces alces, occur naturally throughout most of canada but successful introductions of known numbers of animals have been made to the islands of newfoundland and cape breton. five microsatellite loci were used to investigate the population genetic structure and any change in genetic variability due to founder events of moose in canada. comparisons of allele frequencies for moose from 11 regions of the country suggested that there are at least seven genetically distinct populations (p < 0. ...199910447871
bovine tuberculosis in canadian wildlife: an updated history.mycobacterium bovis infection in wild animals attracted little attention in canada until the disease was almost eliminated from domestic livestock. tuberculosis was endemic in plains bison and occurred in elk, moose, and mule deer in buffalo national park (bnp), alberta during the 1920s and 1930s. bison were moved from bnp to wood buffalo national park (wbnp), where tuberculosis became, and remains, endemic in bison, posing a risk to efforts to restore bison in northern canada. tuberculosis was ...200920119541
high prevalence of prion protein genotype associated with resistance to chronic wasting disease in one alberta woodland caribou population.chronic wasting disease (cwd) is a prion disease found in deer, elk and moose in north america and since recently, wild reindeer in norway. caribou are at-risk to encounter cwd in areas such as alberta, canada, where the disease spreads toward caribou habitats. cwd susceptibility is modulated by species-specific polymorphisms in the prion protein gene (prnp). we sequenced prnp of woodland caribou from 9 albertan populations. in one population (chinchaga) a significantly higher frequency of the 1 ...201728350512
potential role of soil properties in the spread of cwd in western canada.chronic wasting disease (cwd) is a horizontally transmissible prion disease of free ranging deer, elk and moose. recent experimental transmission studies indicate caribou are also susceptible to the disease. cwd is present in southeast alberta and southern saskatchewan. this cwd-endemic region is expanding, threatening manitoba and areas of northern alberta and saskatchewan, home to caribou. soil can serve as a stable reservoir for infectious prion proteins; prions bound to soil particles remain ...201624618673
an expanding population of the giant liver fluke (fascioloides magna) in elk (cervus canadensis) and other ungulates in canada.giant liver fluke (fascioloides magna) populations readily expand under suitable conditions. although extirpated from the eastern slopes of the canadian rocky mountains in the early 1960s, the fluke reappeared following natural spread through mountain passes from british columbia. herein, we assessed epizootiology of the fluke population two decades later. between 1984 and 1991, 534 ungulates, including 381 elk (cervus canadensis), 68 mule deer (odocoileus hemionus hemionus), 54 white-tailed dee ...201525647594
morphological and molecular characteristics of four sarcocystis spp. in canadian moose (alces alces), including sarcocystis taeniata n. sp.individual sarcocysts were isolated from fresh or alcohol-fixed muscle samples of two moose from alberta, canada, and examined by light (lm) and scanning electron microscopy (sem) and molecular methods, comprising polymerase chain reaction (pcr) amplification and sequencing of the complete18s rrna gene and the partial cytochrome c oxidase subunit i gene (cox1). by lm, four sarcocyst types were recognized, and the sequencing results showed that each type represented a distinct species, i.e. sarco ...201424535735
origin of dermacentor albipictus (acari: ixodidae) on elk in the yukon, canada.winter ticks (dermacentor albipictus) on elk (cervus elaphus canadensis) have recently increased in numbers in the yukon, canada, potentially posing risks to other indigenous host species in the region. to evaluate the regional source of winter ticks in the yukon, we sequenced one nuclear (its-2) and two mitochondrial (16srrna and coi) genes, and genotyped 14 microsatellite loci from 483 winter tick specimens collected across north america. we analyzed genetic variation across the geographic and ...201424779459
first report of taenia arctos (cestoda: taeniidae) from grizzly (ursus arctos horribilis) and black bears (ursus americanus) in north america.the cestode taenia arctos was found at necropsy in the small intestine of a grizzly (ursus arctos horribilis) and a black bear (ursus americanus) from kananaskis country in southwestern alberta, canada. the autolysis of the tapeworm specimens precluded detailed morphological characterization of the parasites but molecular analysis based on mitochondrial dna cytochrome c oxidase subunit 1 gene confirmed their identity as t. arctos. this is the first report of t. arctos from definitive hosts in no ...201424382413
ultrastructure of the cyst wall and merozoites of sarcocystis from moose (alces alces) in alberta, canada.two distinct types of cysts of sarcocystis from the musculature of moose (alces alces) were compared by electron microscopy. the fusiform type a cysts differed from the spherical type b cysts in the appearance and thickness of the primary cyst wall, organization of cyst interior, and the presence of a secondary cyst wall around type b. the respective merozoites also differed in size as well as in the number of rhoptries and diameter and arrangement of micronemes. comparison of the ultrastructure ...19816797140
polycyclic aromatic hydrocarbons in caribou, moose, and wolf scat samples from three areas of the alberta oil sands.impacts of toxic substances from oil production in the alberta oil sands (aos), such as polycyclic aromatic hydrocarbons (pahs), have been widely debated. studies have been largely restricted to exposures from surface mining in aquatic species. we measured pahs in woodland caribou (rangifer tarandus caribou), moose (alces americanus), and grey wolf (canis lupus) across three areas that varied in magnitude of in situ oil production. our results suggest a distinction of pah level and source profil ...201526284348
helminths in moose of alberta. 19761260558
deep mitochondrial dna lineage divergences within alberta populations of dermacentor albipictus (acari: ixodidae) do not indicate distinct species.the winter tick dermacentor albipictus (packard) has a single-host life cycle that allows it to reach severe infestation levels on ungulates, particularly moose. genotypic variation within these and related ticks has been a source of taxonomic confusion, although the continuity in their morphology and life history has generally been interpreted as indicating the existence of a single species. to further investigate this variation, we sequenced regions of two mitochondrial dna (mtdna) genes (coi ...201020695271
assessing health care access and use among indigenous peoples in alberta: a systematic review.alberta's indigenous population is growing, yet health care access may be limited. this paper presents a comprehensive review on health care access among indigenous populations in alberta with a focus on the health care services use and barriers to health care access. scientific databases (pubmed, embase, cinahl, and psycinfo) and online search engines were systematically searched for studies and grey literature published in english between 2000 and 2013 examining health care services access, us ...201729176095
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