Parelaphostrongylus Odocoilei (Nematoda: Protostrongylidae) and a Protostrongylid Nematode in Woodland Caribou (Rangifer Tarandus Caribou) of Alberta, Canada

Gray, J. B.; Samuel, William

doi:10.7589/0090-3558-22.1.48

Cited by 15 publications

(16 citation statements)

References 6 publications

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“…Its first-stage larvae on average were longer than those known for P. andersoni from other caribou, yet third-stage larvae were not. The species producing relatively long first-stage larvae (mean 451 + 17 pm) in feces of woodland caribou in northeastern Alberta (Gray and Samuel 1986) also is unidentified. That material originated about 550 km southeast of where P. andersoni occurs in barren ground caribou of the Beverly herd (this study).…”

Section: Discussionmentioning

confidence: 98%

Parelaphostrongylus andersoni (Nematoda: Protostrongylidae) in caribou (Rangifer tarandus) of northern and central Canada

Lankester¹,

Hauta²

1989

Can. J. Zool.

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Woodland (Rangifer tarandus caribou) and barren ground (R. t. groenlandicum) caribou are reported for the first time as hosts of Parelaphostrongylus andersoni, greatly extending the known geographic range of this muscle nematode. Up to 56% of caribou in the Beverly herd, central Northwest Territories, passed dorsal-spined first-stage larvae in their feces. Animals less than 3 years old were more frequently infected and passed greater numbers of larvae than older animals. Larval output in winter and spring did not differ. Adults of the four elaphostrongyline nematodes known to occur in caribou are distinguished by their location in the host, the size of the worms, and the size and morphology of the male copulatory structures. There is an urgent need for tested and improved methods of differentiating larvae of P. andersoni and other elaphostrongyline nematodes from those of P. tenuis that cause neurologic disease in various North American cervids. Demonstration of the occurrence of P. andersoni in Rangifer sp. in North America raises the possibility that it originated in Eurasian cervids and may still occur in the Old World.

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Section: Discussionmentioning

confidence: 98%

Parelaphostrongylus andersoni (Nematoda: Protostrongylidae) in caribou (Rangifer tarandus) of northern and central Canada

Lankester¹,

Hauta²

1989

Can. J. Zool.

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“…Additional benefits provided through the collection of faecal pellets include the potential for other genetics based testing in assessing population bottlenecks (Petersen et al, 2010), metapopulation structure and sex-ratios (Vors, 2006) and other faecal-based parameters, including: hormonal information to assess pregnancy and stress indicators (Messier et al, 1990;Vors, 2006), the size of pellets as an indicator of age-range (Ball, 2010), diet information (Boertje, 1990) and parasite load (Gray & Samuel, 1986). In conducting multiyear sampling events there is also the potential for the use of open population models where population demographic parameters including population rate of growth and recruitment rates can be estimated (Hettinga, 2010).…”

Section: Discussionmentioning

confidence: 99%

Comparative woodland caribou population surveys in Slate Islands Provincial Park, Ontario

Carr

Rodgers²,

Kingston³

et al. 2012

Ran

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Abstract:We evaluated three methods of estimating population size of woodland caribou (boreal ecotype) on the Slate Islands in northern Ontario. Located on the north shore of Lake Superior, the Slate Islands provide a protected and closed population with very limited predator influence that is ideal for a comparison of survey methods. Our objective was to determine the costs and benefits of three population estimation techniques: (1) forward looking infrared (FLIR) technology to count the number of caribou on regular-spaced transects flown by fixed-wing aircraft; (2) observers to count the number of caribou seen or heard while walking random transects in the spring; and, (3) mark-recapture sampling of caribou pellets using DNA analysis. FLIR and the genetics 3-window approach gave much tighter confidence intervals but similar population estimates were found from all three techniques based on their overlapping confidence intervals. There are various costs and benefits to each technique that are discussed further. Understanding the costs and benefits of different population estimation techniques is necessary to develop cost-effective programs for inventorying and monitoring this threatened species not only on the Slate Islands but for other populations as well.

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“…Larvae of Parelaphostrongylus odocoilei, a muscle worm, have been identified in this population of boreal caribou (Jenkins et al, 2005). In addition, P. odocoilei has been isolated from boreal caribou in several locations in Alberta, and P. andersoni has been found in barrenground caribou in the Northwest Territories and in caribou in Labrador, suggesting that these parasites are widespread in woodland caribou of central and northcentral Canada (Gray and Samuel, 1986;Lankester and Hauta, 1989;Jenkins et al, 2005;Kutz et al, 2007). Although P. odocoilei is most likely responsible for the protostrongylid larvae seen in these caribou, concurrent or mixed infection cannot be ruled out without further molecular diagnostics.…”

Section: Parasitologymentioning

confidence: 95%

Serum Biochemistry, Serology, and Parasitology of Boreal Caribou (Rangifer Tarandus Caribou ) in the Northwest Territories, Canada

Johnson

Harms

Larter

et al. 2010

Journal of Wildlife Diseases

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ABSTRACT:Boreal caribou (Rangifer tarandus caribou) are an ecologically and culturally important wildlife species and now range almost exclusively in the boreal forests of Canada, including the Northwest Territories, northern Alberta, and British Columbia. Boreal caribou are threatened throughout their Canadian range because of direct and indirect natural and anthropogenic factors. In the Northwest Territories, however, they have a continuous range that overall has not yet been subjected to the same degree of anthropogenic habitat fragmentation and degradation that has occurred elsewhere in Canada. To monitor the health of boreal caribou populations and individuals, we collected blood from 104 adult, female boreal caribou captured between March 2003 and February 2006 and measured serum biochemical parameters. Serum creatinine was higher in pregnant than in nonpregnant caribou. Several biochemical parameters differed among years, but they tended to be similar to those reported for reindeer. Serum antibodies were found to an alphaherpesvirus, Toxoplasma gondii, and to the Mycobacterium avium subspecies paratuberculosis in 37.5, 2.9, and 1.3% of boreal caribou, respectively. Fecal samples were collected from 149 boreal caribou, and Cryptosporidium sp. oocysts, Giardia sp. cysts, trichostrongyle ova, dorsal-spined nematode larvae, cestode ova, and Eimeria sp. were found. Trypanosoma sp. was detected in the blood of 72.1% of boreal caribou. Eimeria sp., Cryptosporidium sp., and Giardia sp. have not been previously reported in boreal caribou.

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Parelaphostrongylus Odocoilei (Nematoda: Protostrongylidae) and a Protostrongylid Nematode in Woodland Caribou (Rangifer Tarandus Caribou) of Alberta, Canada

Cited by 15 publications

References 6 publications

Parelaphostrongylus andersoni (Nematoda: Protostrongylidae) in caribou (Rangifer tarandus) of northern and central Canada

Parelaphostrongylus andersoni (Nematoda: Protostrongylidae) in caribou (Rangifer tarandus) of northern and central Canada

Comparative woodland caribou population surveys in Slate Islands Provincial Park, Ontario

Serum Biochemistry, Serology, and Parasitology of Boreal Caribou (Rangifer Tarandus Caribou ) in the Northwest Territories, Canada

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