further observations on rangiferine brucellosis in alaskan carnivores.antibodies against rangiferine brucellosis, brucella suis type 4, are commonly found in the serum of various domestic and wild alaskian carnivores which feed on caribou, rangifer tarandus granti, arctic alaska. sled dogs from five native villages on the range of the artic caribou herd, but not from two villages on the the range of the porcupine caribou herd, are commonly infected. wolves (canis lupus) and red foxes (vulpes fulva) are less commonly infected. about 90% of the grizzly bears (ursus ...19751113440
mitochondrial dna and microsatellite dna variation in domestic reindeer (rangifer tarandus tarandus) and relationships with wild caribou (rangifer tarandus granti, rangifer tarandus groenlandicus, and rangifer tarandus caribou).reindeer (rangifer tarandus tarandus) in alaska are semidomestic livestock descended from 1280 animals introduced from siberia, russia, approximately 100 years ago. genetic variation at 18 microsatellite dna loci and the cytochrome b gene of mitochondrial dna (mtdna) was quantified in reindeer from alaska, siberia (russia), and scandinavia and compared with wild north american caribou. mean sequence divergence among 15 mtdna haplotypes in reindeer was 0.007 substitutions per nucleotide site, and ...200616837563
molecular identification of taenia spp. in wolves (canis lupus), brown bears (ursus arctos) and cervids from north europe and alaska.taenia tapeworms of finnish and swedish wolves (canis lupus) and finnish brown bears (ursus arctos), and muscle cysticerci of svalbard reindeer (rangifer tarandus platyrhynchus), alaskan grant's caribou (rangifer tarandus granti) and alaskan moose (alces americanus) were identified on the basis of the nucleotide sequence of a 396bp region of the mitochondrial cytochrome c oxidase subunit 1 gene. two species were found from wolves: taenia hydatigena and taenia krabbei. the cysticerci of reindeer, ...201121571090
metagenomic survey for viruses in western arctic caribou, alaska, through iterative assembly of taxonomic units.pathogen surveillance in animals does not provide a sufficient level of vigilance because it is generally confined to surveillance of pathogens with known economic impact in domestic animals and practically nonexistent in wildlife species. as most (re-)emerging viral infections originate from animal sources, it is important to obtain insight into viral pathogens present in the wildlife reservoir from a public health perspective. when monitoring living, free-ranging wildlife for viruses, sample c ...201425140520
evidence of alphaherpesvirus infections in alaskan caribou and reindeer.the reindeer (rangifer tarandus tarandus) industry in alaska began with animals imported from siberia (russia) in the 1890's. cervid herpes virus 2 (cvhv2) is endemic in reindeer in scandinavia. we sought to determine if the same virus, or similar herpesviruses, were circulating in alaskan reindeer and caribou (rangifer tarandus granti). serum samples from 292 reindeer were collected during annual reindeer handlings (1988-2005) near nome, alaska. in 2005, swab samples were collected from 40 calv ...201222243919
modeling caribou movements: seasonal ranges and migration routes of the central arctic herd.migration is an important component of the life history of many animals, but persistence of large-scale terrestrial migrations is being challenged by environmental changes that fragment habitats and create obstacles to animal movements. in northern alaska, the central arctic herd (cah) of barren-ground caribou (rangifer tarandus granti) is known to migrate over large distances, but the herd's seasonal distributions and migratory movements are not well documented. from 2003-2007, we used gps radi ...201627045587
thiafentanil-azaperone-xylazine and carfentanil-xylazine immobilizations of free-ranging caribou (rangifer tarandus granti) in alaska, usa.carfentanil-xylazine (cx) has been the primary drug combination used for immobilizing free-ranging ungulates in alaska, us since 1986. we investigated the efficacy of a potential new drug of choice, thiafentanil (investigational new animal drug a-3080). captive trials indicated that thiafentanil-azaperone-medetomidine could provide good levels of immobilization. however, field trials conducted in october 2013 on free-ranging caribou ( rangifer tarandus granti) calves showed the combination too p ...201626967141
population structure over a broad spatial scale driven by nonanthropogenic factors in a wide-ranging migratory mammal, alaskan caribou.wide-ranging mammals face significant conservation threats, and knowledge of the spatial scale of population structure and its drivers is needed to understand processes that maintain diversity in these species. we analysed dna from 655 alaskan caribou (rangifer tarandus granti) from 20 herds that vary in population size, used 19 microsatellite loci to document genetic diversity and differentiation in alaskan caribou, and examined the extent to which genetic differentiation was associated with hy ...201425403098
reindeer introgression and the population genetics of caribou in southwestern alaska.alaska caribou (rangifer tarandus granti) in southwestern alaska are a poorly understood system, with differing descriptions of their regional population structure, population abundance that has varied greatly through time and instances of the release of domestic reindeer (r. t. tarandus) into their range. here, we use 21 microsatellites and 297 individuals to investigate the genetic population structure of herds and examine for population bottlenecks. then, using genetic characteristics of exis ...201424842565
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