| serologic investigations of canine parvovirus and canine distemper in relation to wolf (canis lupus) pup mortalities. | twenty-one serum samples from 18 wolves (canis lupus) were collected from 1985 to 1990 from northwestern montana (usa) and southeastern british columbia, canada, and evaluated for antibodies to canine parvovirus (cpv), canine distemper (cd), infectious canine hepatitis, and lyme disease; we found prevalences of 13 (65%) of 19, five (29%) of 17, seven (36%) of 19, and 0 of 20 wolves for these diseases, respectively. pups died or disappeared in three of the eight packs studied. in these three pack ... | 1994 | 8028116 |
| prey specialization may influence patterns of gene flow in wolves of the canadian northwest. | this study characterizes population genetic structure among grey wolves (canis lupus) in northwestern canada, and discusses potential physical and biological determinants of this structure. four hundred and ninety-one grey wolves, from nine regions in the yukon, northwest territories and british columbia, were genotyped using nine microsatellite loci. results indicate that wolf gene flow is reduced significantly across the mackenzie river, most likely due to the north-south migration patterns of ... | 2001 | 11903892 |
| identification of parelaphostrongylus odocoilei (nematoda: protostrongylidae) first-stage larvae in the feces of gray wolves (canis lupus) by molecular methods. | first-stage nematode larvae with a dorsal-spine (dsl) were detected in five of 1,565 fecal samples from gray wolves (canis lupus) collected in british columbia, canada, between 2005 and 2008. molecular techniques were used to identify the dsl because it was not possible to determine their species identity using morphologic characters. the dsl were identified as parelaphostrongylus odocoilei based on the results of single-strand conformation polymorphism (sscp) analyses and dna sequencing of the ... | 2010 | 20090048 |
| exposure to infectious agents in dogs in remote coastal british columbia: possible sentinels of diseases in wildlife and humans. | ranked among the top threats to conservation worldwide, infectious disease is of particular concern for wild canids because domestic dogs (canis familiaris) may serve as sources and reservoirs of infection. on british columbia's largely undeveloped but rapidly changing central and north coasts, little is known about diseases in wolves (canis lupus) or other wildlife. however, several threats exist for transfer of diseases among unvaccinated dogs and wolves. to gain baseline data on infectious ag ... | 2011 | 21461190 |
| introduced and native haplotypes of echinococcus multilocularis in wildlife in saskatchewan, canada. | recent detection of a european-type haplotype of the cestode echinococcus multilocularis in a newly enzootic region in british columbia prompted efforts to determine if this haplotype was present elsewhere in wildlife in western canada. in coyote (canis latrans) definitive hosts in an urban region in central saskatchewan (sk), we found a single haplotype of e. multilocularis that was most similar to a haplotype currently established in the core of this parasite's distribution in europe and to th ... | 2015 | 26020284 |
| population genetic structure of gray wolves (canis lupus) in a marine archipelago suggests island-mainland differentiation consistent with dietary niche. | emerging evidence suggests that ecological heterogeneity across space can influence the genetic structure of populations, including that of long-distance dispersers such as large carnivores. on the central coast of british columbia, canada, wolf (canis lupus l., 1758) dietary niche and parasite prevalence data indicate strong ecological divergence between marine-oriented wolves inhabiting islands and individuals on the coastal mainland that interact primarily with terrestrial prey. local holders ... | 2014 | 24915756 |
| going coastal: shared evolutionary history between coastal british columbia and southeast alaska wolves (canis lupus). | many coastal species occupying the temperate rainforests of the pacific northwest in north america comprise endemic populations genetically and ecologically distinct from interior continental conspecifics. morphological variation previously identified among wolf populations resulted in recognition of multiple subspecies of wolves in the pacific northwest. recently, separate genetic studies have identified diverged populations of wolves in coastal british columbia and coastal southeast alaska, pr ... | 2011 | 21573241 |
| spawning salmon disrupt trophic coupling between wolves and ungulate prey in coastal british columbia. | as a cross-boundary resource subsidy, spawning salmon can strongly affect consumer and ecosystem ecology. here we examine whether this marine resource can influence a terrestrial wolf-deer (canis lupus-odocoileus hemionus) predator-prey system in coastal british columbia, canada. data on resource availability and resource use among eight wolf groups for three seasons over four years allow us to evaluate competing hypotheses that describe salmon as either an alternate resource, consumed in areas ... | 2008 | 18764930 |
| landscape heterogeneity and marine subsidy generate extensive intrapopulation niche diversity in a large terrestrial vertebrate. | 1. inquiries into niche variation within populations typically focus on proximate ecological causes such as competition. here we examine how landscape heterogeneity and allochthonous (marine) subsidy might ultimately generate intrapopulation niche diversity. 2. using stable isotope analysis, we detected extensive terrestrial-marine isotopic niche variation among subpopulations, social groups, and individual grey wolves (canis lupus) that occupy a spatially heterogeneous landscape in coastal brit ... | 2009 | 19120600 |