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[on the parafollicular cells in the thyroid glands of nyctereutes procyonoides viverrinus]. 196314101950
isolation of mycoplasmas from raccoon dog (nyctereutes procyonoides viverrinus), fox (vulpes vulpes japonica) and japanese badger (meles meles anakuma). 19817289340
isolation of mycoplasma and ureaplasma species from raccoon dogs (nyctereutes procyonoides viverrinus).mycoplasma spp. were isolated from five wild raccoon dogs (nyctereutes procyonoides viverrinus). on the basis of biochemical properties and serological tests, nine isolates were identified as mycoplasma edwardii and four were similar to a possibly new mycoplasma sp. represented by strain lm2 which is negative for both glucose fermentation and arginine hydrolysis. in addition, ureaplasmas were detected from these animals. ureaplasmas were compared serologically with ureaplasma strains isolated fr ...19836631416
on the facial artery of the raccoon dog (nyctereutes procyonoides viverrinus temminck).detailed observations were made of the facial artery in 20 raccoon dogs (nyctereutes procyonoides viverrinus temminck) utilizing the plastic injection method. the findings obtained were discussed in comparison with the facial artery of carnivorae. the facial artery diverged anterolaterally from the external carotid artery independently at a position between the origins of the lingual and the posterior auricular arteries when the external carotid bent laterally in front of the tympanic bulla. thi ...19911758686
on the robertsonian polymorphism found in the japanese raccoon dog (nyctereutes procyonoides viverrinus).karyotypes of 39 japanese raccoon dogs (npv) which appeared in the literature and of 7 previously unreported specimens were examined. thirty four individuals showed the standard karyotype 2k = 26m + 10a + (m)x + (a)y + bs (2n = 38 + bs), where bs are supernumerary chromosomes. the remaining 11 individuals had 2k = 25m + 12a + xy + bs (2n = 39 + bs) and one was 2k = 23m + 16a + xy + bs (2n = 41 + bs). the g- and c-banding analyses of both somatic and germ cells revealed that these karyotypes with ...19912064799
serological evidence of coxiella burnetii infection in wild animals in japan.one hundred and thirty-four (26%) of 511 sera from 11 wild animal species in eight prefectures in japan had antibody titers to coxiella burnetii by the enzyme-linked immunosorbent assay. high prevalences were observed in japanese black bears (ursus thibetanus) (78%), hokkaido deer (cervus nippon yesoensis) (69%), japanese hares (lepus brachyurus) (63%), japanese deer (cervus nippon centralis) (56%), and to some extent in japanese monkeys (macaca fuscata) (28%). a low prevalence (13%) was observe ...19938355353
trichinella britovi from japan.although parasites of the genus trichinella have been collected from wild animals in japan, they have never been studied at species level. muscle larvae of trichinella collected from a black bear (ursus thibetanus japonicus) and from a raccoon dog (nyctereutes procyonoides viverrinus) in japan have been identified as trichinella britovi by random amplified polymorphic dna analysis. the presence of t. britovi in japan shows that this parasite has a wide distribution in the palaearctic region, fro ...19968885903
[anti-toxoplasma antibody levels in the main-land raccoon dog, nyctereutes procyonoides viverrinus, in southeastern kanagawa prefecture].naturally-occurring toxoplasma infection has been observed for years in various kinds of wild animals. however, the infection situation has not been well characterized due to a lack of research. in present study, latex fixation tests were conducted for 109 main-land raccoon dogs (67 males and 42 females) all of which were kept in kanazawa zoo in yokohama city, kanagawa prefecture between 1991-1994 to measure levels of toxoplasma antibodies. the test results indicated 20 positive samples out of t ...19968952267
[detection of intestinal parasites from main-land raccoon dogs, nyctereutes procyonoides viverrinus, in southeastern kanagawa prefecture].to obtain the basic data on the route of infection of intestinal parasites as zoonosis, we examined the feces from 87 main-land raccoon dogs, all of which were kept in the yokohama kanazawa zoo (kanagawa) between 1994-1996, for detection of intestinal parasites and evaluated the detection rates. intestinal parasites were detected from 72 of the 87 raccoon dogs (82.8%). among the parasites, ancylostoma spp., trichuris vulpis, ascaridoidea and isospora spp. were most commonly detected. of the 72 r ...19979283143
use of protein ag in an enzyme-linked immunosorbent assay for screening for antibodies against parapoxvirus in wild animals in japan.using protein ag in an enzyme-linked immunosorbent assay (elisa), we tried to detect antibodies against parapoxvirus in 9 species of wild animals in japan: the japanese badger (meles meles anakuma), japanese black bear (ursus thibetanus japonicus), japanese deer (cervus nippon centralis), japanese monkey (macaca fuscata), japanese raccoon dog (nyctereutes procyonoides viverrinus), japanese serow (capricornis crispus), japanese wild boar (sus scrofa leucomystax), masked palm civet (paguma larvata ...199910225841
parasitological survey on wild carnivora in north-western tohoku, japan.in the winter of 1997-1998, we collected parasitological data from 60 wild carnivora in the north-western part of tohoku region, japan. these included 7 foxes (vulpes vulpes japonica), 20 raccoon dogs (nyctereutes procyonoides viverrinus), 29 martens (martes melampus melampus), 3 weasels (two mustela sibirica itatsi and one m. nivalis namiyei), and one japanese badger (meles meles anakuma). roundworms (toxocara canis in foxes and toxocara tanuki in raccoon dogs), hookworms (ancylostoma kusimaens ...199910535507
helminth fauna of carnivores distributed in north-western tohoku, japan, with special reference to mesocestoides paucitesticulus and brachylaima tokudai.in the winter of 1998-1999, we collected parasitological data from 54 wild carnivores in the north-western part of tohoku region, japan. these consisted of 38 martens (martes melampus melampus), 14 raccoon dogs (nyctereutes procyonoides viverrinus) and 2 foxes (vulpes vulpes japonica). collected helminth parasites were 11 nematode, 10 trematode, 3 cestode, and a single acanthocephalan species, including 5 hitherto unknown species for this research area or the mainland of japan (honshu). mesocest ...199910651058
prevalence of dirofilarial infection in raccoon dogs in japan.the raccoon dog (nyctereutes procyonoides viverrinus) is known to acquire canine heartworm (dirofilaria immitis) infection. we surveyed the prevalence of heartworm infection in free-ranging raccoon dogs in the nishi-tama (tokyo) and kanagawa areas of japan. a total of 75 raccoon dog carcasses, including 29 animals from the nishi-tama area and 46 from the kanagawa area, were necropsied between 1992 and 1993. eight out of 75 raccoon dogs were found to be infected (overall 10.7%). the prevalence of ...200011426580
first report of trichinella nativa in red foxes (vulpes vulpes schrencki) from otaru city, hokkaido, japan.forty-three red foxes (vulpes vulpes schrencki) and nine raccoon dogs (nyctereutes procyonoides viverrinus) were captured in otaru city, hokkaido, japan and examined by muscle digestion for the presence of trichinella sp. larvae. of the foxes, five (11.6%) were positive for larvae of trichinella nativa while none of the raccoon dogs were found to be positive. this finding suggests that the red foxes are important reservoir hosts of sylvatic trichinellosis in otaru, hokkaido. this is the first re ...200111438434
properties of a new cdv isolate from a raccoon dog (nyctereutes procyonoides viverrinus) in japan. 200111271918
first record of cryptosporidium infection in a raccoon dog (nyctereutes procyonoides viverrinus).cryptosporidium species have been found in more than 150 species of mammals, but there has been no report in raccoon dogs. here we found the cryptosporidium organism in a raccoon dog, nyctereutes procyonoides viverrinus, and identified this isolate using pcr-based diagnostic methods. cryptosporidium diagnostic fragments of the 18s ribosomal rna, cryptosporidium oocyst wall protein and 70-kda heat shock protein genes were amplified from the isolate and sequenced to reveal the phylogenetic relatio ...200415041092
paragonimus westermani and some rare intestinal trematodes recovered from raccoon dogs (nyctereutes procyonoides viverrinus) introduced recently on yakushima island, japan.helminth parasites were collected from 9 raccoon dogs (nyctereutes procyonoides viverrinus) and 2 japanese weasels (mustela itatsi sho) on yakushima island, japan. the former carnivore was introduced to this world natural heritage area presumably within the last two decades, expanding its population thence, although detailed process(es) of the introduction is unknown. the collected trematodes from raccoon dogs included the triploid form of paragonimus westermani, brachylaima tokudai, maritrema e ...200616891780
juvenile bird acanthocephalans recovered incidentally from raccoon dogs (nyctereutes procyonoides viverrinus) on yakushima island, japan.helminth parasites were collected from 14 raccoon dogs (nyctereutes procyonoides viverrinus) and 2 japanese weasels (mustela itatsi sho) on yakushima island, kagoshima prefecture (kyushu), japan. in addition to trematodes and nematodes reported separately, everted cystacanths of 3 bird acanthocephalans (mediorhynchus robustus in 5 animals, porrorchis leibyi in 2 animals, and sphaerirostris lanceoides in 1 animal) were collected from the raccoon dogs introduced recently on this world natural heri ...200616891781
nematodes from raccoon dogs (nyctereutes procyonoides viverrinus) introduced recently on yakushima island, japan.nematodes were collected from 14 raccoon dogs (nyctereutes procyonoides viverrinus) on yakushima island, kagoshima prefecture (kyushu), japan, that were the progeny of recently introduced animals to this world natural heritage area, probably within the last 2 decades. seven nematode species (toxocara tanuki, ancylostoma kusimaense, arthrostoma miyazakiense, strongyloides planiceps, trichuris vulpis, gongylonema sp., and dirofilaria immitis) were collected from the raccoon dogs. two nematode spec ...200616891782
experimental infection of dirofilaria immitis in raccoon dogs.canine heartworm (dirofilaria immitis) is a nematode that naturally parasitizes in the pulmonary arteries and the right ventricle of domestic dogs (canis familiaris) as final hosts. japanese raccoon dogs (nyctereutes procyonoides viverrinus) also are known to be susceptible to infection by the parasite. however, prevalence of this infection among free-ranging raccoon dogs is low and so is the worm burden. to examine the susceptibility of the raccoon dog to d. immitis infection, 3 raccoon dogs an ...200717539433
nasal neuroendocrine carcinoma in a free-living japanese raccoon dog (nyctereutes procyonoides viverrinus).neuroendocrine carcinoma was diagnosed in the left nasal cavity of a free-living japanese raccoon dog (nyctereutes procyonoides viverrinus). microscopically, the tumour consisted of sheets of anaplastic cells separated by narrow zones of fibrovascular stroma. the neoplastic cells had varying numbers of cytoplasmic granules stained by the grimelius method. immunohistochemically, the neoplastic cells were variably labelled for cytokeratin ae1/ae3, vimentin, chromogranin a and s-100. ultrastructura ...200919081111
muscular sarcocystosis in wild carnivores in honshu, japan.a total of 65 free-living carnivores collected on honshu island, japan were examined for muscular sarcocystis species infections. among them, 12 japanese raccoon dogs (nyctereutes procyonoides viverrinus), one japanese red fox (vulpes vulpes japonica), three japanese martens (martes melampus melampus), and two japanese badgers (meles meles anakuma) were found to have sarcocysts in their muscles. no inflammatory reactions associated with sarcocysts were observed. ultrastructurally, the sarcocysts ...200919841942
meningoencephalitis associated with sarcocystis spp. in a free-living japanese raccoon dog (nyctereutes procyonoides viverrinus).a free-living, young adult, male japanese raccoon dog (nyctereutes procyonoides viverrinus) was rescued in gifu, japan in march 2009. the animal was weak and emaciated with neurological signs that included head tilt, tremor and tic. the brain showed no gross abnormality at necropsy, but microscopically there was severe meningoencephalitis associated with protozoa, which were morphologically consistent with the asexual developmental stage of sarcocystis spp. the protozoa were immunohistochemicall ...201020163802
prevalence of dirofilaria immitis infection in living raccoon dogs assessed by hematological examination.the prevalence of dirofilaria immitis in free-ranging raccoon dogs (nyctereutes procyonoides viverrinus) was examined in the southeast region of kanagawa prefecture, japan, using a rapid immunomigration (rim) test kit. between april 2007 and march 2010, we examined 108 raccoon dogs rescued and housed by the kanazawa zoological garden. d. immitis infection was found in 8 (7.4%) raccoon dogs. this is the first report to reveal the prevalence of d. immitis infection in living raccoon dogs. the prev ...201121293077
complex carcinoma of the mammary gland in a free-living japanese raccoon dog (nyctereutes procyonoides viverrinus).a complex carcinoma of the mammary gland was diagnosed in a free-living old female japanese raccoon dog (nyctereutes procyonoides viverrinus). invasion into lymphatic vessels and metastasis in the inguinal lymph node were observed. this is the first report of complex carcinoma of the mammary gland in a raccoon dog.201324063106
molecular evidence for hemotropic mycoplasma infection in a japanese badger (meles meles anakuma) and a raccoon dog (nyctereutes procyonoides viverrinus).we report detection of hemoplasma in wild japanese badgers (meles meles anakuma) and raccoon dogs (nyctereutes procyonoides viverrinus). sequence analysis of the entire 16s rrna genes identified mycoplasma haemocanis in the raccoon dog sample, and a potential novel mycoplasma species in the japanese badger.201424484489
involvement of two genetic lineages of sarcoptes scabiei mites in a local mange epizootic of wild mammals in japan.similar to wild mammals on the continents, mange caused by the mange mite, sarcoptes scabiei (acari: sarcoptidae) is spreading in wild mammals in most of japan. we collected crusted or alopetic skin from 120 raccoon dogs (nyctereutes procyonoides viverrinus), three raccoons (procyon lotor), six japanese badgers (meles anakuma), one japanese marten (martes melampus), one stray dog (canis lupus familiaris), four wild boars (sus scrofa leucomystax), and one japanese serow (capricornis crispus), mai ...201525397999
seeds recovered from the droppings at latrines of the raccoon dog (nyctereutes procyonoides viverrinus): the possibility of seed dispersal.medium-sized carnivorous mammals are important seed dispersers of fleshy fruits. the raccoon dog (nyctereutes procyonoides viverrinus) often feeds on fleshy fruits and forms latrines. this behavior may potentially lead to seed dispersal. to determine if this is the case, we studied 1) seed recovery in the droppings of raccoon dogs, and 2) the transportation of seeds between habitats using plastic markers in a western suburb of tokyo, japan. in total, 32,473 seeds of 50 plant taxa were recovered ...201525826064
dog biting louse (trichodectes canis) infestation in raccoon dogs (nyctereutes procyonoides viverrinus) in japan. 201525399525
teratoma of the ovary in a free-ranging japanese raccoon dog (nyctereutes procyonoides viverrinus).a young adult, female, free-ranging japanese raccoon dog ( nyctereutes procyonoides viverrinus) with scabies infection was found dead as a result of traumatic injuries presumed to reflect vehicular trauma. necropsy showed a large solid mass located on the left ovarian region, occupying a third of the abdominal cavity. histologically, the mass contained complex tissues derived from three germinal layers, with areas of cuboidal or columnar epithelium, keratinized squamous epithelium, bone, cartila ...201728363052
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