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immunobiology of a spontaneously regressive tumor, the canine transmissible venereal sarcoma (review).canine transmissible venereal sarcoma (ctvs) is a contagious neoplasm of dogs that can be transplanted with intact viable cells across major histocompatibility (mhc) barriers among dogs and even other canine such as foxes, coyotes, and jackals. after two to four months of progressive growth, the tumor regresses in adults, but metastasizes in immunosuppressed dogs and neonatally inoculated pups. the mechanisms of how the tumor cells manage to overcome histocompatibility barriers so successfully f ...19883282476
evaluation of praziquantel against induced nanophyetus salmincola infections in coyotes and dogs.efficacy of praziquantel against nanophyetus salmincola, the trematode vector of salmon poisoning disease, was determined in coyotes (n = 29) and dogs (n = 25). the 10- to 14-week-old animals were fed fish or fish kidneys that contained metacercariae of n salmincola. to prevent salmon poisoning disease, all animals were treated with tetracycline on days 8 and 9 after they were fed fish. ten days after ingestion of infected fish, 19 coyotes and 12 dogs were treated once with praziquantel, adminis ...19883377318
canine distemper in black-footed ferrets (mustela nigripes) from wyoming.in september and october 1985, six black-footed ferrets (mustela nigripes) were captured from the only known population, located near meeteetse, wyoming for captive propagation. two days following capture an adult male showed signs of canine distemper and an adult female displayed similar signs 7 days postcapture; these infections were undoubtedly acquired prior to capture. subsequently the four remaining captive black-footed ferrets also developed canine distemper and all eventually died. clini ...19883411697
preliminary evaluation of praziquantel against metacercariae of nanophyetus salmincola in chinook salmon (oncorhynchus tshawytscha).praziquantel at dosages of 10, 20 or 100 mg/kg of body weight was evaluated against metacercariae of nanophyetus salmincola in chinook salmon (oncorhynchus tshawytscha). ten salmon were used in each of four treated groups and 10 salmon were nontreated controls. three wk after treatment, viability of metacercariae was determined by histologic evaluation, and by feeding the salmon to coyotes and subsequently determining the numbers of trematode eggs/g of feces and numbers of n. salmincola recovere ...19883411713
transmission of ancylostoma caninum and alaria marcianae in coyotes (canis latrans).one of seven female coyotes (canis latrans) captured in webb county, texas during september 1986 and confined and mated in holding facilities at millville, utah whelped the following spring. the maternal female (greater than 5-yr-old) and her five neonates were killed at 22 days postparturition. all were infected with adult ancylostoma caninum and were passing eggs in their feces. also, the neonates and maternal female were infected with immature and adult alaria marcianae, respectively. these f ...19883411716
hepatozoon sp. in wild carnivores in texas.twelve coyotes (canis latrans), three bobcats (lynx rufus) and six ocelots (felis pardalis) from the gulf coast of texas were infected with hepatozoon sp. the geographic distribution of infected wild animals coincides with the highest prevalence of hepatozoon canis infection in domestic dogs for which the wild species may act as a reservoir.19883411720
coyote estrous urine volatiles.samples of female coyote urine were taken once or twice each week during the winter and spring for two years. headspace analysis was employed with tenax gc trapping and gc-ms. tenax trapping was started in less than 1 hr after sampling, and mild conditions were used to minimize losses of highly volatile and labile compounds. thirty-four compounds were identified. they include sulfur compounds, aldehydes and ketones, hydrocarbons, and one alcohol. the principal constituent is methyl 3-methylbut-3 ...198824276012
ixodid ticks on the coyote and gray fox at land between the lakes, kentucky-tennessee, and implications for tick dispersal. 19883357174
helminth parasites of the coyote (canis latrans) in tennessee.from 1980 to 1984, 267 coyotes (canis latrans) from tennessee were examined for helminth parasites. hearts were examined for the presence of dirofilaria immitis, diaphragms for trichinella spiralis, and digestive tracts for other helminths. six species were found including 5 nematodes (d. immitis, physaloptera rara, trichuris vulpis, ancylostoma caninum, and toxascaris leonina) and 1 cestode (taenia pisiformis). univariate and multivariate statistical techniques were used to assess parasite prev ...19873585628
salmon poisoning disease in juvenile coyotes: clinical evaluation and infectivity of metacercariae and rickettsiae.clinical salmon poisoning disease (spd), and survival of neorickettsia helminthoeca and metacercariae of nanophyetus salmincola in fish were evaluated experimentally in 12-wk-old coyotes (canis latrans) to determine the potential of spd for biological control of coyotes. coyotes readily ate fish that contained metacercariae and rickettsiae. they developed diarrhea, anorexia and lethargy within 7 days after feeding. infected coyotes lost 58% of their body weight when compared to uninfected contro ...19873625898
growth stage dependent expression of mhc antigens on the canine transmissible venereal sarcoma.canine transmissible venereal sarcoma (ctvs) is a naturally occurring contagious neoplasm which can be transplanted with intact viable cells across major histocompatibility (mhc) barriers within the species and even to other members of the canine family, such as foxes, coyotes, and wolves. after 2 to 4 months of progressive growth the tumour regresses spontaneously in adults but metastasizes in immunosuppressed hosts and neonates. the mechanisms of how the tumour cells manage to overcome histoco ...19872949770
hematologic values of the endangered san joaquin kit fox, vulpes macrotis mutica.between 1981 and 1982 blood samples were collected from 64 adult san joaquin kit foxes, vulpes macrotis mutica, in western kern county, california. the goal of the study was to establish normal blood values for this endangered species, and to determine whether changes in them could be used to assess the possible effects of petroleum developments on these foxes. none of the values differed significantly between the sexes, or between foxes sampled in developed habitats compared with foxes sampled ...19873820416
experimentally induced histoplasma capsulatum infection in coyotes and a dog.captive coyotes (canis latrans) were inoculated intragastrically (1 coyote), and intratracheally (6 coyotes) with histoplasma capsulatum to simulate natural routes of exposure. in addition, the infectious organism was inoculated iv into another coyote and into a dog (c familiaris) to simulate hematogenous dissemination of h capsulatum. isolation of the pathogen from various tissue specimens, using direct plating and mouse inoculation methods, provided mycologic evidence of infection. the presenc ...19863505936
canine distemper virus in coyotes: a serologic survey.serum samples from 228 coyotes were selected randomly from a serum bank assembled from texas from 1975 to 1984 and were evaluated serologically for neutralizing antibodies against canine distemper virus (cdv). one hundred and twenty-eight (56%) of the 228 coyotes had antibody titers of greater than or equal to 1:5 against cdv (seropositive). the serologic prevalence (seroprevalence) of antibodies against cdv infection was higher in the spring (62%) than in the fall (40%). the seroprevalence of c ...19863505937
ineffectiveness of clorsulon against nanophyetus salmincola in coyotes.efficacy of clorsulon against the trematode nanophyetus salmincola was evaluated in coyotes. ten 16-week-old coyote pups were fed fish that contained metacercariae of n. salmincola. twenty-one days later, 5 of the coyotes were given a suspension of clorsulon (approx 16 mg/kg of body weight, orally). within 30 days after treatment, the numbers of fluke eggs in fecal specimens from the 5 treated coyotes had not decreased, and numbers of fluke eggs and flukes recovered from treated coyotes at necro ...19863505938
arbovirus infections in several ontario mammals, 1975-1980.serological studies for arboviruses were conducted on 725 animal sera collected in 22 ontario townships between 1975 and 1980 including 44 coyote (canis latrans), 277 red fox (vulpes vulpes), 192 raccoon (procyon lotor) and 212 striped skunk (mephitis mephitis). hemagglutination inhibition antibodies to two flaviviruses, namely st. louis encephalitis and powassan were found in 50% of coyote, 47% of skunk, 26% of fox and 10% of raccoon sera. similarly, hemagglutination inhibition antibodies to a ...19863017527
coyote branding injury: a case report. 19863810501
immobilization of coyotes with xylazine hydrochloride-ketamine hydrochloride and antagonism by yohimbine hydrochloride. 19863503155
antifertility effect of busulfan and procarbazine in male and female coyotes.antifertility effects of two cytostatic agents, busulfan and procarbazine, were evaluated using 43 captive breeding pairs of adult coyotes. nineteen pairs served as untreated controls. only the male or female of remaining pairs was treated. females received either 8 mg busulfan/kg or 6 mg procarbazine/kg just prior to onset of the breeding season. males were treated once with either 8 mg busulfan/kg just before onset of breeding or with 4 mg busulfan/kg or 6 mg procarbazine/kg about 1 mo before ...19854074811
brief comments on "coyote control and taste aversion". 19853000295
research on forms of conditioned avoidance in coyotes. 19853000294
coyote control and taste aversion.studies in which conditioned taste aversion was used as a non-lethal method to suppress coyote predation are reviewed in light of the controversy that surrounds such research. it is concluded that the negative results obtained to date may have been due to theoretical and methodological problems in the studies. uncritical acceptance of those results has slowed progress on an effective and inexpensive method of coyote management.19853000293
use of predator odors as repellents to reduce feeding damage by herbivores : ii. black-tailed deer (odocoileus hemionus columbianus).the effectiveness of predator odors (fecal and urine) in suppressing feeding damage by black-tailed deer was investigated in pen bioassays at the university of british columbia research forest, maple ridge, british columbia, canada. a total of eight bioassay trials tested the effects of these odors on deer consumption of salal leaves and coniferous seedlings. cougar, coyote,and wolf feces as well as coyote, wolf, fox, wolverine, lynx, and bobcat urines provided the most effective suppression of ...198524310276
use of predator odors as repellents to reduce feeding damage by herbivores : i. snowshoe hares (lepus americanus).the effectiveness of predator odors (fecal, urine, and anal scent gland) in suppressing feeding damage by snowshoe hares was investigated in pen bioassays at the university of british columbia research forest, maple ridge, british columbia, canada. a total of 28 bioassay trials tested the effects of these odors on hare consumption of willow browse and coniferous seedlings. lynx and bobcat feces, weasel anal gland secretion, and lynx, bobcat, wolf, coyote, fox, and wolverine urines resulted in th ...198524310275
possible pheromonal regulation of reproduction in wild carnivores.recent observations of social behavior and reproduction in wolves, coyotes, hunting dogs, mongooses, and lions suggest possible involvement of pheromones in the regulation of reproductive activity. observed phenomena resemble the known pheromonal effects in mice such as suppression or synchronization of estrus, induction of maternal behavior, and interruption of pregnancy. further studies are necessary to verify the supposed biological effects of carnivore pheromones and to determine their chemi ...198524309850
experimental babesiosis in coyotes and coydogs.one splenectomized and 6 intact coyotes (canis latrans), and 2 coydogs were experimentally inoculated with a recent isolate of babesia gibsoni. the disease was mild in intact animals, was fatal in the splenectomized coyote, and was characterized by a regenerative hemolytic anemia with the pcv decreasing to 16% in intact animals and to 6% in the splenectomized coyote. peak parasitemia ranged from 3% to 21% of erythrocytes infected and was inversely correlated to pcv. serum lactate dehydrogenase, ...19853970435
prevalence of oslerus osleri (cobbold, 1879) in coyotes (canis latrans say) from connecticut. 19853981749
prevention of coccidiosis in domestic dogs and captive coyotes (canis latrans) with sulfadimethoxine-ormetoprim combination.sulfadimethoxine-ormetoprim combination was evaluated as a coccidiostat against experimentally induced coccidiosis in young dogs and coyotes (canis latrans). the animals were experimentally inoculated with 50,000 or 100,000 sporulated oocysts of isospora ohiohensis (98%) and isospora canis (2%). in experiment 1, daily treatment for 13 to 23 days with a combination of 27.5 mg of sulfadimethoxine/kg of body weight (bw) and 5.5 mg of ormetoprim/kg of bw admixed to the feed resulted in no significan ...19854051296
canine heartworm in the domestic and wild canids of southeastern nebraska.the prevalence of canine heartworm (dirofilaria immitis) was examined in the domestic dog, coyote (canis latrans), and red fox (vulpes fulva) populations of southeastern nebraska. microfilariae were detected in 21.4% (22 of 103) of the domestic dogs. the average age of infection for dogs was 5.8 yr. nine of the 22 infected dogs also were positive for dipetalonema reconditum. thirty-nine of 443 (8.9%) coyotes were found to have adult heartworms. the average number of male and female worms per hea ...19854093815
isolation and identification of caliciviruses from dogs with enteric infections.caliciviruses were isolated from 7 dogs and 1 captured coyote with enteritis. there was a high fatality rate in dogs 4 to 16 weeks of age. the occurrence in these dogs of concurrent infection with known enteric pathogens such as salmonella sp, canine parvovirus, canine coronavirus, and canine rotavirus did not allow making any conclusions regarding the pathogenicity of this newly recognized calicivirus. the caliciviruses were characterized by electron microscopy and were further identified as be ...19852982299
serologic survey of canine coronavirus in wild coyotes in the western united states, 1972-1982. 19853001373
seroprevalence of canine parvovirus in wild coyotes from texas, utah, and idaho (1972 to 1983).the prevalence of serum antibodies against canine parvovirus-2 (cpv-2), as measured by a standard hemagglutination-inhibition test, was determined in serum samples collected from 1,184 coyotes (canis latrans) in texas, utah, and idaho from 1972 to 1983. no evidence of parvoviral infection was found before 1979, after which seroprevalence rapidly increased to greater than 70% at all sites by 1982. there were minor differences in prevalence between age groups and among sites, but no consistent dif ...19846096323
natural infection of captive coyote pups with a herpesvirus antigenically related to canine herpesvirus.herpesviruses were isolated from captive coyote pups with ocular discharge and hepatomegaly. the viruses were shown to be antigenically related to canine herpesvirus on the basis of specific virus neutralization with canine herpesvirus antiserum. the epizootiology of the outbreak suggested that the herpesvirus was acquired by indirect contact with guard dogs being cared for by the same animal technicians who cared for the coyotes.19846096324
serologic response of captive coyotes (canis latrans say) to canine parvovirus and accompanying profiles of canine coronavirus titers.fifty-five of 66 (83%) coyote pups from bitches vaccinated against canine parvovirus (cpv) were seropositive for cpv antibodies at birth. the cpv antibody titer in the pups declined with a half-life of 6.7 days until by the 8th week, only two of 41 (5%) pups were seropositive for cpv antibodies. at 8 wk, 41 of the pups were vaccinated against cpv (killed feline origin vaccine), but only one of 37 (3%) was positive for cpv antibodies at 11 wk. the 8-wk-old pups were either too young to respond to ...19846325726
antibodies to trypanosoma cruzi in coyotes in texas. 19846429309
population dynamics across selected habitat variables of the helminth community in coyotes, canis latrans, from south texas.the effects of selected intrinsic variables operating on host subpopulations and of extrinsic variables across the collective host population on the distributions of 10 common helminth species from coyotes in south texas were compared. the intrinsic variables of host sex and presence and severity of sarcoptic mange had little effect on the distributions of most helminth species. the combined influences of (1) seasonal changes across the collective host population and (2) host subpopulations deli ...19846512639
antifertility effect of busulfan and dl-6-(n-2-pipecolinomethyl)-5-hydroxy-indane maleate (pmhi) in coyotes (canis latrans ).antifertility effects of busulfan were evaluated using adult coyotes. in addition, antifertility effects of pmhi were evaluated in adult males. adult males and females were alloted randomly to the following treatments: (1) untreated control, (2) a single oral dose of 3 mg busulfan/kg of body weight (bw) or (3) two oral doses of 3 mg busulfan/kg bw given nine days apart. the untreated males were used as controls in both experiments. additional male coyotes were allotted randomly to pmhi treatment ...198416725985
renal vascular hamartomas in a captive coyote. 19846511595
polycystic kidneys in a western coyote. 19836643244
electroejaculation of the coyote.two electroejaculators were used to collect semen from 40 adult male coyotes. the most effective apparatus used a two-ring rectal probe and an ac voltage of 18 (vrms) at 1000 hz. with this ejaculator, 11 of 15 coyotes produced a satisfactory semen sample, which averaged 0.9 ml in volume and 70 million spermatozoa per ml.198316725831
helminths of the coyote (canis iatrans say) in montana. 19836842734
effects of novelty and familiarity on illness-induced aversions to food and place cues in coyotes (canis latrans).two experiments investigated the effects of novelty and familiarity on illness-induced aversions to taste and place cues in coyotes (canis latrans). coyotes were made ill on familiar food laced with lithium chloride in a novel place and then received preference tests. in experiment 1, coyotes avoided the previously poisoned familiar food in the novel treatment place but readily ate the same familiar food in a familiar safe place. in experiment 2, the results of experiment 1 were replicated, and ...19836317280
the microanatomy of the coyote's (canis latrans) respiratory system. 19836230027
responses of free-ranging coyotes to lures and their modifications.several chemical modifications of a synthetic fermented egg (sfe) lure were field tested on free-ranging coyotes (canis latrans) to determine the effects of odor intensity and quality on their behavioral responses. sfe was modified for testing by (1) enhancing one of the four basic odor components (fruity, sulfurous, sweaty, or fishy), (2) deleting one of the basic components, (3) individually testing an odor component, and (4) addition of aldehydes and indoles to sfe. most behavioral responses, ...198324407760
trichodectes canis on the gray wolf and coyote on kenai peninsula, alaska. 19836644943
maximal oxygen consumption and pulmonary diffusing capacity: a direct comparison of physiologic and morphometric measurements in canids.the purpose of this study was to check the validity of the morphometric model for estimating physiological conductances for gases, dl. we make a direct comparison between the lung's conductance for carbon monoxide, measured physiologically using the single breath method, dlco (sb), and that measured morphometrically using the previously published model, dlco(mm). we also make a direct comparison between the maximum rate of oxygen uptake by the lung during exercise, vo2max, and the lung's conduct ...19836665333
development of sarcocystis alceslatrans dubey, 1980, in the small intestine of dogs.laboratory-reared dogs were fed moose musculature infected with sarcocystis alceslatrans. these dogs shed sporocysts [15.6 x 11.4 microns (14.4 to 15.8 x 10.8 to 11.5)] 11 to 15 days after inoculation. the prepatent period was 10 to 14 days. two cats and 1 coyote that also ate infected moose musculature did not pass sporocysts. histologic examination of intestinal tissue from experimentally infected dogs revealed microgamonts, macrogametes, and oocysts. all stages were present in the lamina prop ...19836416114
experimental infections of sarcocystis cruzi, sarcocystis tenella, sarcocystis capracanis and toxoplasma gondii in red foxes (vulpes vulpes).four littermate 6-wk-old red foxes (nos. 1-4) were fed toxoplasma gondii, sarcocystis cruzi, s. tenella and s. capracanis. one littermate fox (no. 5) served as the control. two foxes (nos. 1, 2) were fed tissue cysts of t. gondii and two foxes (nos. 3, 4) were fed oocysts of t. gondii. twenty-one to 42 days later, the same five foxes were used to test the infectivity of meat of goat, sheep, and ox experimentally inoculated with sarcocystis. fox 2 was fed goat meat and shed s. capracanis-like spo ...19836417347
the epizootiology and pathology of sarcoptic mange in coyotes, canis latrans, from south texas.an epizootic of sarcoptic mange in coyotes from south texas, canis latrans , was studied over a 7-yr period, 1975 through 1981. from a four-county area centered in webb county, texas the epizootic radiated centrifugally to include a 27-county area. the disease progressed from initial, scabby encrustations on the ischium and fore and hind legs to severe, thickened, slate-gray hyperkeratotic lesions with almost complete alopecia. there were significant decreases in alpha-globulin and albumin, sign ...19836425486
response of mink, skunk, red fox and raccoon to inoculation with mink virus enteritis, feline panleukopenia and canine parvovirus and prevalence of antibody to parvovirus in wild carnivores in ontario.mink virus enteritis, feline panleukopenia and canine parvovirus-2 were inoculated separately into groups of raccoon, mink, red fox and striped skunk. raccoons were highly susceptible to mink virus enteritis and feline panleukopenia, with animals developing clinical illness, and several dying within six to ten days of inoculation with lesions typical of parvovirus infection. both viruses were shed in high titre in the feces of infected raccoons, and high antibody titres were stimulated. raccoons ...19836309349
sarcocystis of deer in south dakota.the prevalence of sarcocystis in white-tailed deer (odocoileus virginianus) and mule deer (o. hemionus) in south dakota was determined through microscopic examination of tongue samples. the percentage of sarcocystis infection for both species of deer was determined for prairies east of the missouri river, west of the missouri river, and black hills of western south dakota. sixteen percent (n = 62) of the white-tailed deer tongues from east river, 69% (n = 42) from west river, and 74% (n = 23) fr ...19826808161
sarcoptes scabiei infestation of the coyote (canis latrans), illustrated by the scanning electron microscopy. 19826808163
quantitative parasitemia in calves fed sarcocystis cruzi sporocysts from coyotes.for the quantitation of parasitemia, seven 7- to 10-day-old calves were orally inoculated with 2 virulent isolates of sarcocystis cruzi from coyotes. three calves were each given 2.5 million sporocysts of the 1st isolate; these calves died 31, 35, and 33 days later. the other 4 calves were given 2, 1, 0.76, and 0.38 million sporocysts of the 2nd isolate; these calves died or were euthanatized at 34, 44, 43, and 55 days after inoculation. buffy coat smears from 7 ml of jugular blood of each calf ...19826808868
infectivity of sarcocystis spp. from bison, elk, moose, and cattle for cattle via sporocysts from coyotes.bison bison (bison), cervus canadensis (elk), alces alces (moose), and bos taurus (cattle) musculature containing sarcocystis spp. cysts was fed to laboratory raised canis latrans (coyotes), sporocysts collected from the feces of coyotes fed musculature of each of the ruminant species were fed to four groups of three laboratory-raised domestic calves, respectively, to determine if sarcocystis spp. was transmissible from wild to domestic ruminants and if so, to compare clinical signs of infection ...19826811717
sarcocystosis in neonatal bison fed sarcocystis cruzi sporocysts derived from cattle.a 6-day-old female (bison bison) was inoculated with 10 million sporocysts of the b1 isolate of sarcocystis cruzi originally obtained by feeding heart of a naturally infected cow (bos taurus) to a laboratory-raised coyote. the bison became febrile, lethargic, and anorectic at about 25 days after inoculation of the sporocysts, and was euthanatized 3 days later. there were widespread hemorrhages, hepatitis, myocarditis, nephritis, and enteritis; intravascular meronts were found in the adrenal cort ...19826816777
development of ox-coyote cycle of sarcocystis cruzi. 19826816926
sarcocystosis in newborn calves fed sarcocystis cruzi sporocysts from coyotes.the development of sarcocystis cruzi was compared in 3- to 14-day-old calves (n = 38) inoculated with 55,000 to 500,000,000 sporocysts from intestinal scrapings of coyotes, and euthanatized and necropsied on postinoculation days (pid) 4 to 153. from pid 15 to 19, the calves remained clinically normal, except for fever (greater than or equal to 40 c), during the development of 1st-generation meronts, and lesions in calves euthanatized at this time were confined mainly to mesenteric lymph nodes an ...19826819793
experimental salmon poisoning disease in juvenile coyotes (canis latrans).salmon poisoning disease (spd) was experimentally induced in juvenile coyotes (canis latrans). the disease was lethal in 11 of 12 coyotes within 15 days after inoculation with 1,000 or 4,000 metacercariae of nanophyetus salmincola. clinical manifestations of the disease included lymph node enlargement, anorexia, pyrexia, diarrhea and death. coccoid bodies indistinguishable from rickettsiae were observed in macrophages of spleen, liver, lymph nodes, and duodenum. percentage recovery of adult trem ...19827097880
prevalence of heartworm (dirofilaria immitis leidy) in coyotes from five northern california counties.prevalence rates of heartworm in coyotes was estimated for five northern california counties by examining hearts of coyotes obtained from federal or private trappers. prevalence rates range from 8.3-27.3%, but the proportion of infected coyotes can vary between two regions of the same county. in general, it seems that higher infection rates are found in the foothill regions of the coastal range and sierra nevada, decreasing towards the floor of the sacramento valley as well as at higher elevatio ...19827125062
heartworms (dirofilaria immitis) in coyotes (canis latrans) in new england. 19827131657
pancreatic adenocarcinoma in a coyote-dog cross. 19827154225
induced toxoplasma gondii, toxocara canis, and isospora canis infections in coyotes.six littermate laboratory-raised coyotes (no. 1-6) were used to study the transmission of toxoplasma gondii from cats and mice, and toxocara canis and isospora canis from dogs and mice. coyotes 1 and 2 were inoculated orally with 1,000 infective oocysts of the tc-1 strain of t gondii; coyotes 3 and 4 were fed mice infected with tissue cysts of the tc-1 strain of t gondii. eight days after inoculation with t gondii, the same 4 coyotes were exposed to toxocara canis: coyotes 1 and 2 were inoculate ...19827174440
adverse reactions to sulfaquinoxaline in coyote pups--. 19827174488
radionuclide export and elimination by coyotes at two radioactive waste disposal areas in southeastern idaho.coyote fecal samples were collected near a radioactive waste leaching pond and a solid radioactive waste disposal facility and analyzed for radioactivity. elevated concentrations of 137cs, 90sr and 238pu in the samples from the liquid radioactive waste leaching area were attributed to coyotes ingesting contaminated pond water and/or small mammals. elevated 241am concentrations in coyote fecal samples collected around the solid radioactive waste disposal facility were due to ingestion of contamin ...19827152910
battle renewed over coyote poison. 198117775262
changes in serum progesterone and estrogen of the nonpregnant coyote during the breeding season. 19817195028
attempted transmission of oslerus (oslerus) osleri (=filaroides osleri) from coyotes to domestic dogs and coyotes. 19817241285
serologic evidence of leptospirosis in a southern arizona coyote population. 19817253099
attempted experimental transfer of sarcoptic mange (sarcoptes scabiei, acarina: sarcoptidae) among red fox, coyote, wolf and dog. 19817310942
abortion and death in goats inoculated with sarcocystis sporocysts from coyote feces.ten 75- to 105-day-pregnant does each were inoculated orally within 1 million (2 does), 10,000 (4 does), or 1,000 (4 does) sporocysts of sarcocystis from coyote feces. two does not inoculated with sporocysts served as controls. the 2 does inoculated with 1 million sporocysts died from acute sarcocystosis 21 and 22 days after inoculation (dai), and each had 2 dead fetuses. the 4 does inoculated with 10,000 sporocysts were ill 19 to 33 dai but survived; 1 aborted at 33 dai, 1 had a live kid that d ...19816782066
an ultrastructural study of first- and second-generation merogony in the coccidian sarcocystis tenella.sporocysts of the coccidian sarcocystis tennella were originally isolated in the feces of a coyote. sporocysts used for inoculation of lambs were obtained from experimentally infected dogs. at 14, 16, and 19 days postinoculation (dpi) of lambs with the sporocysts, various developmental stages of first-generation meronts were found within cells located between the endothelium and internal elastic membrane of mesenteric arteries. at 19, 21, and 25 dpi, second-generation merogony occurred in cells ...19816798206
early developmental stages of sarcocystis cruzi in calf fed sporocysts from coyote feces.the development of sarcocystis cruzi was studied in an 11-day-old calf killed seven days postinoculation with 5 x 10(8) sporocysts from feces of coyotes. uninucleate zoites were found in arteries of mesenteric lymph nodes but not in other organs. zoites measured 4.9 x 3.0 (3.5-7.0 x 2.1-3.5) micrometers. of the 36 zoites studied, 31 were in endothelial cells, four were in macrophages in the lumen of arteries, and one was free in the lumen of an artery. infected endothelial cells were two to thre ...19816798207
olfactory discrimination of lithium chloride by the coyote (canis latrans). 19816266393
serologic and hematologic values of wild coyotes in wisconsin.blood samples were obtained from 30 coyotes (canis latrans) captured in northern wisconsin in conjunction with radio-telemetry studies. samples were assayed for seven hematologic values, seven serum chemistries, serum albumin, globulin and total protein. results are given with respect to sex and age and are compared with available data for captive wild and pen-raised coyotes. leukocyte counts were greater for males than females and packed cell volumes were greater for adults than young, possibly ...19807463601
cestodes of the coyote (canis latrans) in san joaquin valley, california. 19807365635
sarcocystis species in moose (alces alces), bison (bison, bison), and pronghorn (antilocapra americana) in montana.the transmission of sarcocystis spp from naturally infected moose, bison, and pronghorn was attempted in laboratory-raised coyotes and dogs. infected musculature from a moose was feed to a dog and a coyote, and 12 days later, both animals shed sporocysts. sporocysts were 14 to 17 x 8.5 to 10.5 micron (av 14.5 x 8.8). a coyote was fed muscle from a bison, and 11 days later, it shed sporocysts. the sporocysts were 14 to 16 x 9 to 11 micron (14.0 x 9.0). infected tissues from a pronghorn were fed t ...19806782919
development and ultrastructure of first-generation meronts of sarcocystis cruzi in calves fed sporocysts from coyote feces.the development of sarcocystis cruzi hasselmann (syn. s. fusiformis railliet) meronts was studied in seven 7- to 10-day-old calves filled 4, 7, 11, 15, 22, 25 and 28 days postinoculation (dpi) with 5 x 10(7) sporocysts from feces of coyotes. no meronts were found 4 and 7 dpi. young and intermediate meronts with 1-16 nuclei were found in endothelial cells of arteries in mesenteric lymph nodes, but not in kidneys 11 dpi. mature meronts were noted in endothelial cells of arteries, arterioles, or ca ...19806783745
environmental exposure to coxiella burnetii: a sero-epidemiologic survey among domestic animals.the prevalence of agglutinating serum antibodies against coxiella burnetii, the cause of q fever in humans, was tested in a hospital population of companion animals and livestock in california during 1973--1975. a sample of stray dogs was also tested. among the hospitalized animals 346 (48%) of 724 dogs, 7 (9%) of 80 cats, 9 (32%) of 28 cattle and 31 (26%) of 121 horses had antibodies against c. burnetii. of 316 stray dogs 208 (66%) were seropositive. the overall prevalence of 53% among 1040 dog ...19807377186
hammondia heydorni infection in sheep, goats, moose, dogs and coyotes.the transmission of hammondia heydorni among sheep, goats, cattle, dogs and coyotes is described. oocysts of h. heydorni, obtained from dog faeces by feeding naturally infected goat meat, were fed to an experimental goat. after 312 days tissues from this animal were fed to 2 dogs. one dog, which received goat muscle, shed oocysts, whereas the other dog which received brain, spleen, kidneys, lungs and liver did not. oocysts from the dog fed goat muscle were fed to an experimental sheep. after 73 ...19807422358
coyotes and canine heartworm in california.adult dirofilaria immitis were found in the hearts of 43 of 115 coyotes (canis latrans) trapped within a 50 km radius of the el dorado county seat. of mature coyotes, 45% were positive, with worm numbers averaging 9.0 in females and 16.2 in males. d. immitis microfilariae occurred in the peripheral blood and in lung smears. microfilariae of dipetalonema reconditum were present in 14 of the coyotes examined (12%). several coyotes showed enlarged hearts with gross pathological changes.19807431518
field application of the conditioned taste aversion paradigm to the control of coyote predation on sheep and turkeys. 19807447856
effect of lithium chloride in coyote pup diet. 19807469971
coyote as a final host for sarcocystis species of goats, sheep, cattle, elk, bison, and moose in montana.tissues (1 kg) from sheep, goats, cattle, moose, bison, or elk naturally infected with sarcocystis species were fed to one to four sarcocystis-free coyotes and the number of sporocysts in feces and intestines were counted. all 12 coyotes fed naturally infected tissues shed sarcocystis in feces, with a prepatent period of 9 to 15 days. the four coyotes fed infected beef had 15, 25, 113, and 201 million sporocysts in their feces and intestines. the coyotes fed elk, moose, or bison had 2.5, 15, and ...19806778270
association of malassezia (pityrosporum) pachydermatis with sarcoptic mange in new york state.malassezia (pityrosporum) pachydermatis consistently accompanied sarcoptic mange in all red foxes (vulpes fulva), porcupines (erethizon dorsatum), and coyotes (canis latrans) examined. this yeastlike microorganism has not heretofore been reported on any of these hosts. its presence on the exoskeleton of sarcoptes scabiei taken from these animals suggests a carrier role for the mite. the yeast may be saprophytic or a secondary pathogen.19806780699
acute hemorrhagic enteritis associated with canine coronavirus and parvovirus infections in a captive coyote population. 19806256330
antibodies to clostridium botulinum toxins in free-living birds and mammals.naturally-occuring antibodies against clostridium botulinum toxins were found in cathartes aura (turkey vultures), canis latrans (coyotes) and corvus brachyrhynchos (crows) by the passive hemagglutination (pha) test and verified by the serum neutralization (sn) test. the prevalence of iha antibodies was 18 of 20 vultures (90%), 5 of 12 crows (42%) and 25 to 110 coyotes (23%). vultures and coyotes were seropositive by the pha test against a, b, c, d, and f toxins. the highest antibody titer 1:819 ...1979459044
transmission of transmissible venereal tumor of the dog to the coyote.three coyotes experimentally implanted with cells from a transmissible venereal tumor of a dog developed neoplasms. histopathologic appearances of the tumors in the coyotes were similar to those described in the dog. attempts to transmit the tumor to suckling mice, rats, hamsters, kittens, and opossums were not successful.1979475096
serologic survey for leptospirosis in coyotes in northcentral kansas.during 1975 to 1977, serum samples were collected from 101 adult coyotes (canis latrans) captured in northcentral kansas. ten samples were seropositive by microagglutination testing and six of those samples were seropositive for multiple serovars. titers for leptospira interrogans serovars grippotyphosa, pyrogenes, djasiman, butembo, and pomona were demonstrated.1979521368
dirofilaria immitis infection in foxes and coyotes in indiana.between october 1976 and january 1977, carcasses or hearts and lungs from 202 wild foxes and coyotes in indiana were collected to determine the prevalence of dirofilaria immitis infection. three of 113 (2.7%) red foxes (vulpes fulva), 3 of 81 (3.7%) gray foxes (urocyon cinereoargenteus), and 1 of 8 (12.5%) coyotes (canis latrans) were infected with d immitis. an average of 5 worms (range, 1 to 10) were recovered from foxes and 11 worms were recovered from the coyote. worms from the coyote were o ...1979521369
epizootic streptococcal pneumonia in captive coyotes.severe death loss was observed in captive coyotes, canis latrans. of 48 coyotes in one kennel, 22 (46%) died within a 7 day period. cause of death was determined to be acute fibrinopurulent (bacterial) broncho-pneumonia and pleuritis. streptococcus equisimilis was isolated from the lungs of two coyotes examined.1979522217
parasitic infection of filaroides osleri, capillaria aerophila and spirocera lupi in coyotes from the southwestern united states.a total of 181 coyotes (canis latrans) was examined for helminth parasites filaroides osleri, capillari aerophila, and spirocerca lupi. coyote carcasses were obtained from kansas, western oklahoma-northern texas, colorado, new mexico, arizona and southern california. cysts of f. osleri were present in the trachea or bronchial division in 39 (22%) coyotes. c. aerophila were present in only 7 (4%) coyotes. s. lupi lesions were present in the aorta of 59 (33%) coyotes. esophageal infections of s. l ...1979522226
experimentally induced leptospirosis in coyotes (canis latrans).infection of coyotes (canis latrans) with leptospira interrogans serovars pomona, canicola, and copenhageni was accomplished by percutaneous inoculation. bacteriologic, serologic, histopathologic, and fluorescent antibody techniques were used to investigate the infections. leptospiremia was established with pomona. leptospiruria was demonstrated with the three serovars. serovar canicola was recovered from one coyote 134 days after it was inoculated.1979525917
microencapsulation and dissolution parameters of undecenovanillylamide: a potential coyote deterrent.the microencapsulation and dissolution of undecenovanillylamide (i), a potential coyote-aversive agent for use on sheep, were studied. while i has been shown to protect sheep, its short duration of action makes it economically unfeasible. compound i microcapsules were prepared, and optimum conditions for encapsulation via complex coacervation were determined. microcapsules that were hardened for 0.5, 1, and 2 hr, as well as i powder, were characterized according to their dissolution. longer hard ...1979529056
brucella abortus in coyotes. i. a serologic and bacteriologic survey in eastern texas.prevalence of brucella abortus serum antibodies in coyotes from east central texas was determined by the buffered brucella antigen (card test), rivanol, standard agglutination tube, and cold complement fixation tube tests. eighteen percent (9 of 51) of the coyotes were positive serologically. b. abortus biotype 1 was isolated from various tissues from 7 of 43 coyotes by bacteriologic culture. congenital transmission was found.1979116012
epidemiologic survey of sylvatic plague by serotesting coyote sentinels with enzyme immunoassay.the geographic distribution and areas of high sylvatic plague activity in california were verified by using coyotes (canis latrans) as sentinel animals. antibody levels against yersinia pestis were tested using the enzyme-labelled antibody (ela) test and the microtiter passive hemagglutination and hemagglutination inhibition. a survey using the ela test indicated that the overall antibody prevalence among 143 coyotes was 21%. by geographic regions, the highest antibody prevalence was 27% among c ...1979382839
effects of sodium cyanide and diphacinone in coyotes (canis latrans): applications as predacides in livestock toxic collars. 1979583029
hematologic and serum chemistry values of pen-raised coyotes.blood samples obtained from 48, eighteen-month-old pen-raised coyotes (canis latrans) were analyzed for 32 hematologic and serum chemistry parameters. mean, standard deviation, and range were established for each parameter. no differences attributable to sex were observed for any parameter. the reported hematologic and serum chemistry values establish non-fasting baseline values for pen-raised coyotes.1979459037
coyote laparotomy: in vivo determination of reproductive success.reproductive tracts of 24 female coyotes hand-reared for behavioral research were examined by laparotomy following the 1977-78 breeding season. litter counts revealed 51 whelps with 10 of the 24 females while examination by laparotomy indicated 83 uterine swellings in 18 of the same 24 females. the laparotomy proved to be an effective, relatively precise procedure and gave a 39% increase in data acquisition.197916725413
90sr and 137cs in coyote scats from the hanford reservation. 1979422370
anesthesia in the coyote using a combination of ketamine and xylazine.ketamine and xylazine were combined to provide anesthesia for coyotes. the drugs were tested in eight adult animals divided equally by sex. a dosage combining 5.5 mg./kg. of each drug provided effective anesthesia for periods from 45 to 60 min.1978739590
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