| ticks (acari: ixodidae) collected from small and medium-sized kansas mammals. | seven species of hard-bodied ticks were collected from 20 species of small and medium-sized mammals in kansas; amblyomma americanum l., dermacentor variabilis (say), haemaphysalis leporispalustris (packard), ixodes cookei packard, i. kingi bishopp, i. sculptus neumann, and i. texanus banks. dermacentor variabilis was found statewide, a. americanum only in the eastern one-third of the state, and the ixodes spp. and h. leporispalustris were widely scattered. the most common tick found was d. varia ... | 1994 | 8057327 |
| serologic survey for selected infectious disease agents in swift and kit foxes from the western united states. | a serologic survey of swift fox (vulpes velox) and kit fox (v. macrotis) from the western usa was conducted for 12 infectious diseases. samples from swift fox were collected between 1987 and 1992 from colorado (n = 44), kansas (n = 10), and wyoming (n = 9). samples from kit fox were collected in california (n = 86), new mexico (n = 18), utah (n = 9), and arizona (n = 6). overall antibody prevalence rates were 33 of 110 (30%) for canine parvovirus (cpv), 9 of 72 (13%) for canine distemper virus ( ... | 2000 | 11085448 |
| ectoparasites of the swift fox in northwestern texas. | ectoparasites were collected from chemically immobilized swift foxes (vulpes velox) in the texas panhandle (usa). three species of fleas (pulex irritans, dactylopsylla percernis, and euhoplopsyllus affinis) and one species of tick (ixodes sculptus) were found. pulex irritans was the only abundant ectoparasite; it occurred on all 23 foxes brushed in 1999-2000 and all but one of 34 hosts examined in 2000-01. otherwise, this swift fox population had a depauperate ectoparasite fauna; the remainder o ... | 2004 | 15465723 |
| serologic survey for canine infectious diseases among sympatric swift foxes (vulpes velox) and coyotes (canis latrans) in southeastern colorado. | swift foxes (vulpes velox) and coyotes (canis latrans) are sympatric canids distributed throughout many regions of the great plains of north america. the prevalence of canid diseases among these two species where they occur sympatrically is presently unknown. from january 1997 to january 2001, we collected blood samples from 89 swift foxes and 122 coyotes on the us army piñon canyon maneuver site, las animas county, se colorado (usa). seroprevalence of antibodies against canine parvovirus (cpv) ... | 2004 | 15650093 |
| possible vector dissemination by swift foxes following a plague epizootic in black-tailed prairie dogs in northwestern texas. | to determine whether swift foxes (vulpes velox) could facilitate transmission of yersinia pestis to uninfected black-tailed prairie dog (cynomys ludovicianus) colonies by acquiring infected fleas, ectoparasite and serologic samples were collected from swift foxes living adjacent to prairie dog towns during a 2004 plague epizootic in northwestern texas, usa. a previous study (1999-2001) indicated that these swift foxes were infested almost exclusively with the flea pulex irritans. black-tailed pr ... | 2006 | 16870868 |
| the potential role of swift foxes (vulpes velox) and their fleas in plague outbreaks in prairie dogs. | swift foxes (vulpes velox) have been proposed as potential carriers of fleas infected with the bacterium yersinia pestis between areas of epizootics in black-tailed prairie dogs (cynomys ludovicianus). we examined antibody prevalence rates of a population of swift foxes in colorado, usa, and used polymerase chain reaction (pcr) assays to examine their flea biota for evidence of y. pestis. fifteen of 61 (24%) captured foxes were seropositive, and antibody prevalence was spatially correlated with ... | 2007 | 17699080 |
| hematology and serum biochemistry of captive swift foxes (vulpes velox). | blood samples were taken from 23 swift foxes (vulpes velox) which were to be used in a reintroduction program. the foxes originated from two different captive breeding programs: one at the calgary zoo (cz) and one at the wildlife reserve of western canada (wrwc). several differences between swift fox and domestic canine hematology were seen, including an increased number of smaller red blood cells and lower absolute leukocyte counts in swift foxes. serum glutamic pyruvic transaminase was higher ... | 2010 | 3352099 |
| small intestinal adenocarcinoma with carcinomatosis in a swift fox (vulpes velox). | a 7-yr-old, intact, female swift fox (vulpes velox) presented to the veterinary health center at kansas state university with a history of chronic weight loss, lethargy, inappetence, and myiasis. on physical examination, a firm mass was palpated in the mid- to cranial abdomen. the fox was euthanatized as a result of the grave prognosis. gross necropsy and histologic findings included a small intestinal adenocarcinoma with diffuse transperitoneal spread throughout the abdominal cavity (carcinomat ... | 2015 | 26352968 |
| does habitat heterogeneity in a multi-use landscape influence survival rates and density of a native mesocarnivore? | the relationships between predators, prey, and habitat have long been of interest to applied and basic ecologists. as a native great plains mesocarnivore of north america, swift foxes (vulpes velox) depended on the historic disturbance regime to maintain open grassland habitat. with a decline in native grasslands and subsequent impacts to prairie specialists, notably the swift fox, understanding the influence of habitat on native predators is paramount to future management efforts. from 2001 to ... | 2014 | 24963713 |
| temporal analysis of genetic structure to assess population dynamics of reintroduced swift foxes. | reintroductions are increasingly used to reestablish species, but a paucity of long-term postrelease monitoring has limited understanding of whether and when viable populations subsequently persist. we conducted temporal genetic analyses of reintroduced populations of swift foxes (vulpes velox) in canada (alberta and saskatchewan) and the united states (montana). we used samples collected 4 years apart, 17 years from the initiation of the reintroduction, and 3 years after the conclusion of relea ... | 2013 | 24033503 |
| sound transmission at ground level in a short-grass prairie habitat and its implications for long-range communication in the swift fox vulpes velox. | the acoustic environment of swift foxes vulpes velox vocalizing close to the ground and the effect of propagation on individual identity information in vocalizations were quantified in a transmission experiment in prairie habitat. sounds were propagated (0.45 m above the ground) at distances up to 400 m. effects of transmission were measured on three sound types: synthesized sweeps with 1.3 khz bandwidths spanning in the range of 0.3-8.0 khz; single elements of swift fox barking sequences (frequ ... | 2008 | 18681568 |
| food webs and intraguild predation: community interactions of a native mesocarnivore. | trophic level interactions between predators create complex relationships such as intraguild predation. theoretical research has predicted two possible paths to stability in intraguild systems: intermediate predators either outcompete higher-order predators for shared resources or select habitat based on security. the effects of intraguild predation on intermediate mammalian predators such as swift foxes (vulpes velox) are not well understood. we examined the relationships between swift foxes an ... | 2007 | 17479752 |
| average dispersal success: linking home range, dispersal, and metapopulation dynamics to reserve design. | spatially explicit models for populations are often difficult to tackle mathematically and, in addition, require detailed data on individual movement behavior that are not easily obtained. an approximation known as the "average dispersal success" provides a tool for converting complex models, which may include stage structure and a mechanistic description of dispersal, into a simple matrix model. this simpler matrix model has two key advantages. first, it is easier to parameterize from the types ... | 2006 | 16711065 |
| immobilization of swift foxes with ketamine hydrochloride-xylazine hydrochloride. | there is an increasing need to develop field immobilization techniques that allow researchers to handle safely swift foxes (vulpes velox) with minimal risk of stress or injury. we immobilized captive swift foxes to determine the safety and effectiveness of ketamine hydrochloride and xylazine hydrochloride at different dosages. we attempted to determine appropriate dosages to immobilize swift foxes for an adequate field-handling period based on three anesthesia intervals (induction period, immobi ... | 2002 | 12528444 |
| a phylogenetic analysis of basal metabolism, total evaporative water loss, and life-history among foxes from desert and mesic regions. | we measured basal metabolic rate (bmr) and total evaporative water loss (tewl) of species of foxes that exist on the arabian peninsula, blanford's fox (vulpes cana) and two subspecies of red fox (vulpes vulpes). combining these data with that on other canids from the literature, we searched for specialization of physiological traits among desert foxes using both conventional least squares regression and regressions based on phylogenetic independent contrasts. further, we explored the consequence ... | 2004 | 14564467 |
| genetic subdivisions among small canids: mitochondrial dna differentiation of swift, kit, and arctic foxes. | gene flow can effectively suppress genetic divergence among widely separated populations in highly mobile species. however, the same may not be true of species that typically disperse over shorter distances. using mtdna restriction-site and sequence analyses, we evaluate the extent of divergence among populations of two small relatively sedentary north american canids, the kit and swift foxes (genus vulpes). we determine the significance of genetic differentiation among populations separated by ... | 1993 | 28564903 |
| home range size and resource use by swift foxes in northeastern montana. | swift foxes (vulpes velox) are endemic to the great plains of north america, but were extirpated from the northern portion of their range by the mid-1900s. despite several reintroductions to the northern great plains, there remains a ~350 km range gap between the swift fox population along the montana and canada border and that in northeastern wyoming and northwestern south dakota. a better understanding of what resources swift foxes use along the montana and canada border region will assist man ... | 2020 | 32665740 |