| amazonian visceral leishmaniasis--distribution of the vector lutzomyia longipalpis (lutz & neiva) in relation to the fox cerdocyon thous (linn.) and the efficiency of this reservoir host as a source of infection. | | 1990 | 2215228 |
| cerdocyon thous (l.) (carnivora, canidae) naturally infected with leishmania donovani chagasi (cunha & chagas, 1973) in corumbá (mato grosso do sul state, brazil). | | 1988 | 2593825 |
| chromosomal evolution of the canidae. i. species with high diploid numbers. | the giemsa banding patterns of seven canid species, including the grey wolf (canis lupus), the maned wolf (chrysocyon brachyurus), the bush dog (speothos venaticus), the crab-eating fox (cerdocyon thous), the grey fox (urocyon cinereoargenteus), the bat-eared fox (otocyon megalotis), and the fennec (fennecus zerda), are presented and compared. relative to other members of canidae, these species have high diploid complements (2n greater than 64) consisting of largely acrocentric chromosomes. they ... | 1987 | 3568761 |
| [studies on wild reservoirs and vectors of "trypanosoma cruzi." xxx: natural infection of the bush dog, "cerdocyon thous azarae" (wied, 1824) by "t. cruzi"]. | | 1968 | 4977006 |
| leishmaniasis in brazil. iv. the fox, cerdocyon thous (l) as a reservoir of leishmania donovani in para state, brazil. | | 1969 | 5368005 |
| leishmaniasis in brazil. xix: visceral leishmaniasis in the amazon region, and the presence of lutzomyia longipalpis on the island of marajó, pará state. | sporadic cases of visceral leishmaniasis in amazonian brazil appear limited to pará state, in the lower amazon valley and principally near the atlantic coast. the fox cerdocyon thous (l.) has been incriminated as a natural host of the causative parasite, leishmania donovani chagasi, but past doubts have existed over the identification of the most likely vector as lutzomyia (lutzomyia) longipalpis (lutz & neiva, 1912). investigations on two of five recent cases of visceral leishmaniasis of man in ... | 1983 | 6623589 |
| leishmaniasis in brazil: xviii. further evidence incriminating the fox cerdocyon thous (l) as a reservoir of amazonian visceral leishmaniasis. | major endemic areas of visceral leishmaniasis in brazil are located in the drier, poorly forested regions, principally in the northeastern states such as ceará and bahia. cases of the human disease in the amazon region are rare, very sporadic, and seldom present opportunities for epidemiological study. following the report of a fatal case near salvaterra, the island of marajó, pará state, a preliminary investigation has resulted in the isolation of a parasite regarded as leishmania donovani chag ... | 1982 | 7164150 |
| epidemiology of canine leishmaniasis: a comparative serological study of dogs and foxes in amazon brazil. | the paper describes a longitudinal field study of canine leishmaniasis in sympatric domestic dog and crab-eating fox (cerdocyon thous) populations. dogs were studied in house-to-house surveys, and foxes were studied by live-trapping and radio-telemetry. because serological tests (ifat in this case) for leishmaniasis are often of uncertain sensitivity and specificity, we draw conclusions comparatively. both cross-sectional (age-prevalence) and longitudinal analyses indicate that incidence in dogs ... | 1994 | 7970884 |
| evolution of the zfx and zfy genes: rates and interdependence between the genes. | a phylogenetic analysis of sex-chromosomal zinc-finger genes (zfx and zfy) indicates that the genes have not evolved completely independently since their initial separation. the sequence similarities suggest gene conversion in the last exon between the duplicated y-chromosomal genes zfy-1 and zfy-2 in the mouse. there are also indications of conversion (or recombination) between the x- and y-chromosomal genes in the crab-eating fox and in the mouse. the method for estimating synonymous and nonsy ... | 1993 | 8487630 |
| [direct agglutination tests in the serodiagnosis of visceral leishmaniasis in the state of pará]. | the direct agglutination test (dat) was evaluated for serodiagnosis of visceral leishmaniasis (vl) in human and canids (dogs and foxes cerdocyon thous). the results were compared with those of the immunofluorescent antibody assay (ifat) and enzyme-linked immunosorbent assay (elisa). the sera used were from: humans (303): confirmed vl (16), suspected vl (65), other conditions (102), negative controls (15) and individuals from an endemic area (105); dogs (82): from an endemic area (68), salvaterra ... | 1996 | 8713608 |
| visceral leishmaniasis in the hoary zorro dusicyon vetulus: a case of mistaken identity. | the historical identification of the brazilian 'north-eastern' zorro as dusicyon vetulus is questioned in relation to its incrimination as a reservoir of leishmania chagasi, the agent of american visceral leishmaniasis. comparative cranial and dental morphology showed that specimens of this north-eastern species more closely resemble the crab-eating zorro cerdocyon thous, conforming with the documented geographical ranges of the respective species. we conclude that the single 'wild' canid host o ... | 1996 | 8944254 |
| hepatozoon canis infection of wild carnivores in brazil. | hepatozoon canis was diagnosed in a crab-eating fox (cerdocyon thous) found on a highway in the region of botucatu, são paulo, brazil, after being hit by a car. the fox had bilateral fractures of the olecranon, which was corrected by osteosynthesis. hematologic findings included a neutrophilia, eosinophilia, monocytosis and mild anemia. in the leishman-stained blood film, gametocytes of hepatozoon canis in neutrophils were identified measuring 9.1 +/- 0.54 x 5.3 +/- 0.46 microns. | 1997 | 9211653 |
| monoclonal antibody characterization of rabies virus strains isolated in the river plate basin. | in this study, 91 strains isolated in the river plate basin, south america, were examined from the epidemiological standpoint and with monoclonal antibodies (mabs) to the nucleocapsid of rabies virus. such strains reacted to mabs in accordance with nine different patterns (antigenic variants). rabies virus was isolated from 49 cattle, 21 dogs, 11 non-haematophagous bats, four vampire bats, two foxes, two horses, one buffalo, and one human. five of the variants had not been described previously. ... | 1997 | 9394612 |
| [notes on fleas (siphonaptera) of the fox cerdocyon thous (canidae) from an endemic area of visceral leishmaniasis in jacobina, bahia, brazil]. | from july to september of 1998, 152 fleas were collected from 18 specimens of the fox cerdocyon thous captured in the visceral leishmaniasis endemic area of jacobina, state of bahia, brazil. the fleas were identified as: 136 rhopalopsyllus lutzi lutzi, 11 pulex irritans, 2 ctenocephalides canis, 1 ctenocephalides felis felis and 2 xenopsylla cheopis. | 2000 | 10881126 |
| dietary separation of sympatric carnivores identified by molecular analysis of scats. | we studied the diets of four sympatric carnivores in the flooding savannas of western venezuela by analysing predator dna and prey remains in faeces. dna was isolated and a portion of the cytochrome b gene of the mitochondrial genome amplified and sequenced from 20 of 34 scats. species were diagnosed by comparing the resulting sequences to reference sequences generated from the blood of puma (puma concolor), jaguar (panthera onca), ocelot (leopardus pardalus) and crab-eating fox (cerdocyon thous ... | 2000 | 11050553 |
| contact rates between wild and domestic canids: no evidence of parvovirus or canine distemper virus in crab-eating foxes. | evaluating the risk of disease spill-over from domestic dogs to wildlife depends on knowledge of inter-specific contact rates and/or exposure to aetiological agents in dog environments. here, contact rates of crab-eating foxes (cerdocyon thous) with sympatric domestic dog populations were measured over 25months in amazon brazil. foxes and dogs were serologically and clinically monitored for exposure to canine parvovirus (cpv-2) and canine distemper virus (cdv), pathogens known to have caused wil ... | 2001 | 11356314 |
| the pattern of phylogenomic evolution of the canidae. | canidae species fall into two categories with respect to their chromosome composition: those with high numbered largely acrocentric karyotypes and others with a low numbered principally metacentric karyotype. those species with low numbered metacentric karyotypes are derived from multiple independent fusions of chromosome segments found as acrocentric chromosomes in the high numbered species. extensive chromosome homology is apparent among acrocentric chromosome arms within canidae species; howe ... | 2001 | 12063402 |
| sarcoptic mange in free-ranging pampas foxes in the gran chaco, bolivia. | sarcoptes scabiei infestation was diagnosed in two freshly dead free-ranging pampas foxes (pseudalopex gymnocercus) in the gran chaco, bolivia. diagnosis was made based on histologic evaluation of skin biopsies and identification of the parasite from skin scrapings. characteristic gross lesions consistent with mange were noted in 19 of 94 observations of free-ranging pampas foxes in the region from december 1998 to january 2000. none of 16 crab-eating foxes (cerdocyon thous) observed during the ... | 2002 | 12238385 |
| low infectiousness of a wildlife host of leishmania infantum: the crab-eating fox is not important for transmission. | the epidemiological role of the crab-eating fox cerdocyon thous in the transmission of leishmania infantum is assessed in a longitudinal study in amazon brazil. a total of 37 wild-caught foxes were immunologically and clinically monitored, and 26 foxes exposed to laboratory colonies of the sandfly vector lutzomyia longipalpis, over a 15-month period. in total 78% (29/37) of foxes were seropositive for anti-leishmania igg on at least 1 occasion, and 38% (8/37) had infections confirmed by pcr and/ ... | 2002 | 12458824 |
| ticks (acari: ixodidae) on wild animals from the porto-primavera hydroelectric power station area, brazil. | from june 2000 to june 2001, a total of 741 ticks were collected from 51 free-living wild animals captured at the porto-primavera hydroelectric power station area, located alongside an approximately 180 km course of the paran river, between the states of s o paulo and mato grosso do sul, comprising 9 species of 3 genera: ambly-omma (7 species), boophilus (1) and anocentor (1). a total of 421 immature amblyomma ticks were reared in laboratory until the adult stage, allowing identification of the ... | 2003 | 12563479 |
| [comparative hematology. ii. hematological data of cerdocyon thous azarae wied 1826]. | | 1953 | 13223513 |
| [experimental infection of cerdocyon thous (common fox) with leishmania donovani. preliminary note]. | | 1964 | 14183231 |
| seroprevalence of toxoplasma gondii antibodies from wild canids from brazil. | the prevalence of anti-toxoplasma gondii antibodies was evaluated by the indirect immunofluorescent-antibody test in serum of 57 wild canids from three different species: lycalopex gymnocercus, cerdocyon thous and dusicyon vetulus from the northeast, southeast and southern regions of brazil. the prevalence was 35.1%, with 20 of the 57 canids demonstrating antibodies anti-t. gondii at dilutions of 1:16 in 2, 1:32 in 4, 1:64 in 2, 1:128 in 2, 1:256 in 6, 1:512 in 2 and 1:2048 in 2 animals. none of ... | 2004 | 15135875 |
| detection of antibodies to neospora caninum in two species of wild canids, lycalopex gymnocercus and cerdocyon thous from brazil. | domestic dog (canis domesticus) and the coyote (canis latrans) are the only known definitive hosts for the protozoan neospora caninum that causes abortion in dairy cattle. in the present study, antibodies to n. caninum were sought in three species of wild canids, cerdocyon thous, lycalopex gymnocercus and dusicyon vetulus from brazil. antibodies to n. caninum were assayed by the indirect fluorescent antibody test (ifat) and the neospora agglutination test (nat). n. caninum antibodies were found ... | 2004 | 15325054 |
| ticks (acari: ixodida) on wild carnivores in brazil. | the present study reports field data of ticks infesting wild carnivores captured from july 1998 to september 2004 in brazil. additional data were obtained from one tick collection and from previous published data of ticks on carnivores in brazil. during field work, a total of 3437 ticks were collected from 89 cerdocyon thous (crab-eating fox), 58 chrysocyon brachyurus (maned wolf), 30 puma concolor (puma), 26 panthera onca (jaguar), 12 procyon cancrivorus (crab-eating raccoon), 4 speothos venati ... | 2005 | 16082932 |
| serologic evidence of leishmania infection in free-ranging wild and domestic canids around a brazilian national park. | transmission of disease between wildlife, domestic animals, and humans is of great concern to conservation issues and public health. here we report on the prevalence of anti-leishmania sp. antibodies in 21 wild canids (7 chrysocyon brachyurus, 12 cerdocyon thous, and 2 lycalopex vetulus) and 74 free domestic dogs (canis familiaris) sampled around the serra do cipó national park. in dogs, the apparent prevalence was 8.1% and in wild canids it was 19% (2 crab-eating foxes, c. thous, and 2 maned wo ... | 2006 | 16699717 |
| antibodies against lutzomyia longipalpis saliva in the fox cerdocyon thous and the sylvatic cycle of leishmania chagasi. | sera of 11 wild cerdocyon thous foxes from an endemic area for american visceral leishmaniasis were tested for the presence of antibodies against salivary gland homogenates (sgh) of lutzomyia longipalpis. all foxes had higher levels of anti-lu. longipalpis sgh antibodies than foxes from non-endemic areas, suggesting contact between foxes and the vector of visceral leishmaniasis. sera of humans and dogs living in the same area were also tested for reactivity against lu. longipalpis sghs and had a ... | 2007 | 16887159 |
| [presence of igm antibodies for leptospira interrogans in wild animals from tocantins state, 2002]. | four hundred and twenty-seven serum samples of wild animals were tested against 18 serovars of leptospira interrogans. of 286 samples of cebus apella, 46 (16.1%) were positive for the serovars pomona, brasiliensis, mini, swajizak, grippotyphosa, sarmin, fluminense, autumnalis, hebdomadis, guaratuba, javanica and icterohaemorrhagiae. of 82 samples of alouatta caraya, 2 (2.4%) were positive for the serovars mangus and fluminense. of 31 samples of nasua nasua, 4 (12.9%) were positive for the serova ... | 2006 | 16906258 |
| transferability of short tandem repeat markers for two wild canid species inhabiting the brazilian cerrado. | the maned wolf (chrysocyon brachyurus) and the crab-eating fox (cerdocyon thous) are two wild-canid species found in the brazilian cerrado. we tested cross-amplification and transferability of 29 short tandem repeat primers originally developed for cattle and domestic dogs and cats on 38 individuals of each of these two species, collected in the emas national park, which is the largest national park in the cerrado region. six of these primers were successfully transferred (cssm-038, pez-05, pez- ... | 2006 | 17183492 |
| parasites of free-ranging small canids and felids in the bolivian chaco. | parasite surveys of free-ranging wildlife provide important information for monitoring population health. between march 2001 and march 2003, we sampled 10 ocelots (leopardus pardalis), eight geoffroy's cats (oncifelis geoffroyi), a jaguarundi (herpailurus yaguarondi), five pampas foxes (pseudalopex gymnocercus), and three crab-eating foxes (cerdocyon thous) at three sites in the bolivian chaco. the objective of the study was to survey the parasite fauna of these carnivores and compare prevalence ... | 2006 | 17312790 |
| rabies virus maintained by dogs in humans and terrestrial wildlife, ceará state, brazil. | rabies viruses circulating in ceará, brazil, were identified by molecular analysis to be related to variants maintained by dogs, bats, and other wildlife. most of these viruses are associated with human rabies cases. we document the emergence of a rabies virus variant responsible for an independent epidemic cycle in the crab-eating fox (cerdocyon thous). | 2006 | 17326958 |
| serosurvey of small carnivores in the bolivian chaco. | five species of bolivian carnivores, including nine geoffroy's cats (oncifelis geoffroyi), ten ocelots (leopardus pardalis), one jaguarundi (herpailurus yaguarondi), nine pampas foxes (pseudalopex gymnocercus), and five crab-eating foxes (cerdocyon thous) were sampled between march 2001 and april 2005 and tested for antibodies to common pathogens of domestic carnivores. carnivores were trapped in three areas: a village, the region between human settlements and a protected area, and within kaa-iy ... | 2007 | 17699100 |
| the use of zootherapeutics in folk veterinary medicine in the district of cubati, paraíba state, brazil. | the present work addresses the use of zootherapy in folk veterinary medicine (ethnoveterinary) by the residents of the municipal district of cubati, microregion of seridó, paraíba state, brazil. it sought to identify the principal animals used as medicinal sources for zootherapeutics and to contribute to the preservation and sustainability of this traditional knowledge. | 2007 | 17825094 |
| molecular detection of paracoccidioides brasiliensis in road-killed wild animals. | paracoccidioides brasiliensis infections have been little studied in wild and/or domestic animals, which may represent an important indicator of the presence of the pathogen in nature. road-killed wild animals have been used for surveillance of vectors of zoonotic pathogens and may offer new opportunities for eco-epidemiological studies of paracoccidiodomycosis (pcm). the presence of p. brasiliensis infection was evaluated by nested-pcr in tissue samples collected from 19 road-killed animals; 3 ... | 2008 | 17885959 |
| characterization of rabies virus isolated from canids and identification of the main wild canid host in northeastern brazil. | the rabies cases in dogs and wild canids in northeastern brazil are a public and animal health problem. this paper describes the identities of the coding region of the n-gene of rabies virus (rabv) isolated in canids from northeastern brazil. the genetic tree generated using the sequence data described here divided the cluster brazilan canids into two subclusters (dog-related strains and wild canid-related strains) with identities greater than those already described. the two subclusters are sub ... | 2008 | 17889396 |
| efficiency of box-traps and leg-hold traps with several bait types for capturing small carnivores (mammalia) in a disturbed area of southeastern brazil. | capturing small carnivores is often necessary for obtaining key ecological data. we compared the efficiency of box and leg-hold traps, using live and dead bait, to capture six carnivore species (herpailurus yagouaroundi (e. geoffroyi, 1803), leopardus tigrinus (schreber, 1775), nasua nasua (linnaeus, 1766), cerdocyon thous (linnaeus, 1766), eira barbara (linnaeus, 1758), and galictis cuja (molina, 1782)). the use of leg-hold traps significantly increased the capture rate of carnivores (5.77%) an ... | 2007 | 18457140 |
| visceral leishmaniasis in captive wild canids in brazil. | visceral leishmaniasis (vl) is endemic in belo horizonte (state of minas gerais, brazil). leishmania sp. can naturally infect several species of mammals, and the domestic dog is the most important reservoir of the disease in south america. this report describes five cases of visceral leishmaniasis in brazilian canids. among 15 animals kept in captivity in a zoo in belo horizonte (state of minas gerais, brazil), two animals, a bush dog (spheotos venaticos) and a hoary zorro (lycalopex vetulus) we ... | 2008 | 18556130 |
| [helminths of pampas fox, pseudalopex gymnocercus (fischer, 1814) and of crab-eating fox, cerdocyon thous (linnaeus, 1766) in the south of the state of rio grande do sul, brazil]. | forty wild canids were captured by live trap at municipalities of pedro osorio and pelotas in southern of the state of rio grande do sul and they were transported to the parasitology laboratory at the universidade federal de pelotas. after they were posted, segments of intestinal, respiratory and urinary tracts and liver were separated and examined. animal skulls were used for taxonomic identification. of forty wild animals trapped, 22 (55%) were pseudalopex gymnocercus and 22 (55%) cerdocyon th ... | 2008 | 18823576 |
| molecular characterization of rabies virus isolates from dogs and crab-eating foxes in northeastern brazil. | thirty-eight samples of rabies virus isolated from dogs and crab-eating foxes (cerdocyon thous) in northeastern brazil were characterized genetically by analyzing the g gene and the psi region. the results show that there are two groups of rabies virus lineages circulating among domestic and wild animals in the region. the topologies of the phylogenetic trees of the g gene and psi region are similar and reveal the existence of geographic groups. the genetic diversity of the lineages isolated fro ... | 2009 | 19185599 |
| dioctophyme renale (nematoda, dioctophymatidae) infection in the crab-eating fox (cerdocyon thous) from brazil. | the purpose of this study is to report the first case of parasitism by the giant kidney worm, dioctophyme renale (goeze, 1782), in the crab-eating fox, cerdocyon thous (linnaeus, 1766), in brazil. a debilitated adult male fox was taken to the screening center for wild animals in rio de janero (cetas/rj) and eventually died of an unknown cause. during necropsy, a brownish-red nematode, 28.9 cm long, was found in the peritoneal cavity. the worm was identified as a male d. renale. this study report ... | 2009 | 19204359 |
| crab-eating fox (cerdocyon thous), a south american canid, as a definitive host for hammondia heydorni. | hammondia heydorni is a cyst forming coccidia closely related to other apicomplexans, such as toxoplasma gondii, neospora caninum and hammondia hammondi with a two-host life cycle. dogs and other canids as red foxes (vulpes vulpes) and coyotes (canis latrans) may serve as definitive hosts for h. heydorni. sporulated oocysts are infective for cattle, sheep and goats, which may serve as intermediate hosts. herein, we describe the ability of crab-eating fox (cerdocyon thous), a wild carnivore that ... | 2009 | 19303215 |
| canine distemper virus in a crab-eating fox (cerdocyon thous) in brazil: case report and phylogenetic analyses. | although canine distemper is enzootic worldwide and has a wide host range, there are no reports of canine distemper virus in crab-eating foxes (cerdocyon thous) that provide information on virus phylogeny and histopathologic lesions. the objective of this study is report and describe canine distemper in a crab-eating fox (c. thous), with a focus on the phylogeny of the virus strain and the histopathologic lesions in the animal. | 2009 | 19395766 |
| transmission, reservoir hosts and control of zoonotic visceral leishmaniasis. | zoonotic visceral leishmaniasis (zvl) caused by leishmania infantum is an important disease of humans and dogs. here we review aspects of the transmission and control of zvl. whilst there is clear evidence that zvl is maintained by sandfly transmission, transmission may also occur by non-sandfly routes, such as congenital and sexual transmission. dogs are the only confirmed primary reservoir of infection. meta-analysis of dog studies confirms that infectiousness is higher in symptomatic infectio ... | 2009 | 19835643 |
| canine distemper infection in crab-eating fox (cerdocyon thous) from argentina. | canine distemper virus (cdv) has been reported worldwide in wild carnivores and has been cited as the cause of population declines in some species. crab-eating foxes (cerdocyon thous) from el palmar national park, argentina, were observed either dead or exhibiting clinical neurologic signs. samples were taken from two individuals that were laterfound tobe positive for cdv by direct immunofluorescence in brain tissue. based on molecular studies, the cdv strain had a high percentage of identity co ... | 2009 | 19901389 |
| observations of sylvatic rabies in northern argentina during outbreaks of paralytic cattle rabies transmitted by vampire bats (desmodus rotundus). | during rabies outbreaks in cattle (paralytic rabies) in argentina associated with the common vampire bat desmodus rotundus, rabies was observed in marsh deer (blastocerus dichotomus), red brocket deer (mazama americana), capybara (hydrochoerus hydrochaeris), savanna fox (cerdocyon thous), and great fruit-eating bat (artibeus lituratus). rabies could constitute a threat to the survival of marsh deer in places where they live in small groups, and infection of both great fruit-eating bats and savan ... | 2009 | 19901391 |
| [diversity of wild and domestic mammal's intestinal helminths from the caatinga of the parque nacional serra da capivara, southeast of piauí, brazil]. | biodiversity studies allow ecosystem assessment and monitoring of environmental changes and impacts. parasite diversity could reflect the host/ parasite coevolutionary process and the environment changes that permit the loss, gain or maintenance of species. this survey used species/morphotypes of helminths eggs found in feces from seven wild mammal species (the groups dasypodidae and large cats, and tamandua tetradactyla, cebus apella, alouatta caraya, cerdocyon thous, pecari tajacu) and from tw ... | 2009 | 20040186 |
| [seroprevalence of antibodies anti-neospora caninum and anti-toxoplasma gondii in captive wild canids]. | neosporosis is considered one of the main cause of abortion in dairy cattle in the world. the prevalence of neospora caninum in wild species has been studied since the coyote (canis latrans), a north american wild canid specie was discovered as definitive host of this parasite. the aim of the present study was to determine the serum prevalence of n. caninum and t. gondii in wild native canids species from brazil. serum samples of 25 crab-eating dogs (cerdocyon thous), five pampas fox (lycalopex ... | 2008 | 20059860 |
| toxoplasma gondii and leishmania spp. infection in captive crab-eating foxes, cerdocyon thous (carnivora, canidae) from brazil. | the zoonoses toxoplasmosis and leishmaniasis are important worldwide and also affect wild animals. thus, the present study aimed to assess the prevalence of leishmania spp. and toxoplasma gondii antibodies in 52 serum samples from captive crab-eating foxes (cerdocyon thous) kept in 17 zoos in são paulo state, brazil. modified agglutination test (mat, for toxoplasmosis) and indirect fluorescent antibody test (ifat, for toxoplasmosis and leishmaniasis) were employed with heterologous anti-dog immu ... | 2010 | 20060648 |
| hosts, distribution and genetic divergence (16s rdna) of amblyomma dubitatum (acari: ixodidae). | we supply information about hosts and distribution of amblyomma dubitatum. in addition, we carry out an analysis of genetic divergence among specimens of a. dubitatum from different localities and with respect to other neotropical amblyomma species, using sequences of 16s rdna gene. although specimens of a. dubitatum were collected on several mammal species as cattle horse, tapirus terrestris, mazama gouazoubira, tayassu pecari, sus scrofa, cerdocyon thous, myocastor coypus, allouata caraya, glo ... | 2010 | 20084537 |
| search for mycobacterium leprae in wild mammals. | leprosy is still a worldwide public health problem. brazil and india show the highest prevalence rates of the disease. natural infection of armadillos dasypus novemcinctus with mycobacterium leprae has been reported in some regions of the united states. identification of bacilli is difficult, particularly due to its inability to grow in vitro. the use of molecular tools represents a fast and sensitive alternative method for diagnosis of mycobacteriosis. in the present study, the diagnostic metho ... | 2010 | 20428654 |
| [leishmania (leishmania) infantum chagasi in wild canids kept in captivity in the state of mato grosso]. | visceral leishmaniasis is a zoonosis that affects many mammals, and domestic canids are the main reservoirs in urban environments. this note describes infection by leishmania (leishmania) infantum chagasi among wild canids kept in captivity in the state of mato grosso, brazil. | 2010 | 20563507 |
| molecular detection of hepatozoon spp. in brazilian and exotic wild carnivores. | hepatozoon spp. are apicomplexan parasites that infect a wide variety of animals. the infection occurs through the ingestion of a hematophagous arthropod definitive host. herein, we assessed the presence of hepatozoon spp. in 165 captive wild felids and 100 captive wild canids using molecular techniques. we found that 6 felids (4 little spotted cats, 1 jaguarondi, and 1 puma) and 5 canids (2 bush dogs, 1 fox, 1 crab-eating fox, and 1 maned wolf) were positive for hepatozoon spp. hepatozoon spp. ... | 2010 | 20630658 |
| dna extraction from hair shafts of wild brazilian felids and canids. | wild felids and canids are usually the main predators in the food chains where they dwell and are almost invisible to behavior and ecology researchers. due to their grooming behavior, they tend to swallow shed hair, which shows up in the feces. dna found in hair shafts can be used in molecular studies that can unravel, for instance, genetic variability, reproductive mode and family structure, and in some species, it is even possible to estimate migration and dispersion rates in given populations ... | 2010 | 21174262 |
| terrestrial and aquatic mammals of the pantanal. | different works have registered the number of mammal species within the natural habitats of the pantanal based on currently known records, with species richness ranging from 89 to 152 of annotated occurrences. our present list sums 174 species. however, at least three factors have to be emphasised to deal with recorded numbers: 1) to establish the ecotone limit between the floodplain (which is the pantanal) and its neighbouring domain like the cerrado, besides the existence of maps recently prod ... | 2011 | 21537603 |
| food web connections and the transmission cycles of trypanosoma cruzi and trypanosoma evansi (kinetoplastida, trypanosomatidae) in the pantanal region, brazil. | we examined by parasitological tests (hemocultures and buffy coat) infection by trypanosoma cruzi and t. evansi in blood samples from leopardus pardalis, cerdocyon thous and domestic dogs. besides, 25 t. cruzi isolates previously derived from feral pigs and small wild mammals were here characterized by miniexon gene and demonstrated to be in the tci genotype. herein, we make an overall analysis of the transmission cycle of both trypanosome species in the light of the assemblage of data collected ... | 2011 | 21600622 |
| visceral leishmaniasis in a captive crab-eating fox cerdocyon thous. | visceral leishmaniasis (vl) is a zoonotic disease with worldwide distribution. the crab-eating fox (cerdocyon thous) is considered a wild reservoir of many zoonotical diseases, particularly vl. this study reported the presence of leishmania infantum amastigotes in different organs of one captive c. thous found dead in a zoo. this animal was positive by the indirect fluorescence antibody test and had many clinical signs of vl. intracellular amastigote forms of l. infantum were seen in neutrophils ... | 2011 | 22204055 |
| molecular and serological detection of leishmania spp. in captive wild animals from ilha solteira, sp, brazil. | leishmaniasis is a zoonotic disease that affects 12 million people worldwide. several mammalian species can serve as a reservoir for this disease. dogs are the main reservoir for visceral leishmaniasis in urban areas, which has become a serious public health concern in brazil. the aim of this study was to evaluate the presence of leishmania spp. in captive wild animals from ilha solteira, são paulo, brazil. blood and various tissues samples were collected from animals of five different species: ... | 2011 | 21961752 |
| heavy metals in hair of wild canids from the brazilian cerrado. | in this study, we aimed to assess whether free-ranging wild canids are exposed to heavy metals in one of the most developed and populated regions of brazil. hair of 26 wild canids (maned wolves chrysocyon brachyurus, crab-eating foxes cerdocyon thous, and hoary foxes lycalopex vetulus) from the cerrado biome in southeast brazil were analyzed by spectrophotometry to detect cadmium, chromium, and lead, and also the essential copper, iron, manganese, and zinc traces. all samples showed traces of co ... | 2011 | 22201044 |
| rickettsial infection in ticks collected from road-killed wild animals in rio de janeiro, brazil. | during 2008-2010, ticks were collected from road-killed wild animals within the serra dos orgãos national park area in the state of rio de janeiro, brazil. in total, 193 tick specimens were collected, including amblyomma dubitatum neumann and amblyomma cajennense (f.) from four hydrochoerus hydrochaeris (l.), amblyomma calcaratum neumann and a. cajennense from four tamandua tetradactyla (l.), amblyomma aureolatum (pallas) and a. cajennense from five cerdocyon thous l., amblyomma longirostre (koc ... | 2012 | 23270184 |
| identification of blood meal sources of lutzomyia longipalpis using polymerase chain reaction-restriction fragment length polymorphism analysis of the cytochrome b gene. | an analysis of the dietary content of haematophagous insects can provide important information about the transmission networks of certain zoonoses. the present study evaluated the potential of polymerase chain reaction-restriction fragment length polymorphism (pcr-rflp) analysis of the mitochondrial cytochrome b (cytb) gene to differentiate between vertebrate species that were identified as possible sources of sandfly meals. the complete cytb gene sequences of 11 vertebrate species available in ... | 2014 | 24821056 |
| new records of three species of nematodes in cerdocyon thous from the brazilian pantanal wetlands. | we report the occurrence of nematodes collected from the gut of roadkilled crab-eating foxes (two adult males and one juvenile female), cerdocyon thous (linnaeus, 1766), found on the br 262 highway in mato grosso do sul state, brazil in 2011. three helminth species were identified: ancylostoma buckleyi, pterygodermatites (multipectines) pluripectinata, and ascaridia galli. these nematodes are reported for the first time to infect c. thous from the brazilian pantanal wetlands, thereby expanding t ... | 2015 | 26444063 |
| parasites of domestic and wild canids in the region of serra do cipó national park, brazil. | over recent decades, diseases have been shown to be important causes of extinctions among wild species. greater emphasis has been given to diseases transmitted by domestic animals, which have been increasing in numbers in natural areas, along with human populations. this study had the aim of investigating the presence of intestinal helminths in wild canids (maned wolf, chrysocyon brachyurus, and crab-eating fox, cerdocyon thous) in the serra do cipó national park (43-44º w and 19-20º s) and endo ... | 2012 | 23070438 |
| bartonella species pathogenic for humans infect pets, free-ranging wild mammals and their ectoparasites in the caatinga biome, northeastern brazil: a serological and molecular study. | this study verified the occurrence of bartonella spp. in dogs, cats, wild mammals and their ectoparasites in petrolina and lagoa grande counties, pernambuco, located in a semi-arid region in northeastern brazil. anti-bartonella spp. antibodies were detected by indirect immunofluorescence assay (ifa) in 24.8% of dogs (27/109) and in 15% of cats (6/40). bartonella sp. dna was identified by pcr performed on dna extracted from blood and ectoparasites using primers targeting bartonella sp. glta and r ... | 2017 | 28249707 |
| bartonella clarridgeiae and bartonella vinsonii subsp. berkhoffii exposure in captive wild canids in brazil. | summary wild canids are potential hosts for numerous species of bartonella, yet little research has been done to quantify their infection rates in south america. we sought to investigate bartonella seroprevalence in captive wild canids from 19 zoos in são paulo and mato grosso states, brazil. blood samples were collected from 97 wild canids belonging to four different native species and three european wolves (canis lupus). indirect immunofluorescent antibody testing was performed to detect the p ... | 2015 | 24892580 |
| serologic survey of infectious diseases in populations of maned wolf (chrysocyon brachyurus) and crab-eating fox (cerdocyon thous) from aguas emendadas ecological station, brazil. | domestic dogs are reservoirs for many infectious diseases and may represent a potential source of infection for wild canid populations. a serologic investigation of antibodies to toxoplasma gondii, neospora caninum, brucella abortus, and leptospira spp. was conducted on three maned wolves (chrysocyon brachyurus) and seven crab-eating foxes (cerdocyon thous), all free-living, at the aguas emendadas ecological station (esecae), federal district, brazil, between february and october 2006. out of th ... | 2013 | 23505716 |
| serologic survey of brucellosis in captive neotropical wild carnivores in northeast brazil. | abstract. this study reports the detection of antibodies against brucella abortus and b. canis in wild neotropical carnivores kept in captivity in three zoos in northeastern brazil. a total of 42 serum samples were examined, 17 from coatis (nasua nasua), eight from crab-eating raccoons (procyon cancrivorus), three from crab-eating foxes (cerdocyon thous), three from hoary foxes (lycalopex vetulus), two from little spotted cats (leopardus tigrinus), five from tayras (eira barbara), two from great ... | 2012 | 22779245 |
| exposure of free-ranging wild carnivores and domestic dogs to canine distemper virus and parvovirus in the cerrado of central brazil. | human population growth around protected areas increases the contact between wild and domestic animals, promoting disease transmission between them. this study investigates the exposure of free-ranging wild carnivores and domestic dogs to canine distemper virus (cdv) and parvovirus in emas national park (enp) in the cerrado savanna of central brazil. serum samples were collected from 169 wild carnivores, including the maned wolf (chrysocyon brachyurus), crab-eating fox (cerdocyon thous), hoary f ... | 2016 | 27469023 |
| serologic evidence of canine parvovirus in domestic dogs, wild carnivores, and marsupials in the argentinean chaco. | the transmission of pathogens between domestic dogs and generalist wildlife species may be modified by environmental degradation, biodiversity losses, host densities, and increased contact rates in remnant forest patches. a serologic survey of canine parvovirus (cpv) in rural domestic dogs and wild mammals was conducted in two neighboring rural areas (disturbed and protected) from pampa del indio, northeastern argentina, between 2008 and 2011. a total of 174 domestic dogs and 26 wild mammals-4 c ... | 2014 | 25314822 |
| adenoviruses of canine and human origins in stool samples from free-living pampas foxes (lycalopex gymnocercus) and crab-eating foxes (cerdocyon thous) in são francisco de paula, rio dos sinos basin. | the spread of enteric viruses of domestic animals and human beings to wild species can be facilitated by the resistance of these viruses on the environment and their ability to be transmitted by water and contaminated food. the health status of the populations of pampas foxes lycalopex gymnocercus) and crab-eating foxes (cerdocyon thous) is largely unknown and the landscapes occupied by these animals in southern brazil have been threatened by human occupation and expansion of agriculture. in thi ... | 2015 | 26270208 |
| dipylidium caninum (cyclophyllidea, dipylidiidae) in a wild carnivore from brazil. | we report dipylidium caninum for the first time in a wild carnivore in brazil, the crab-eating fox (cerdocyon thous). presence of the cestode could be the consequence of anthropogenic expansion into natural habitats of this host, as this parasite has only previously been reported in domestic hosts in brazil. | 2012 | 22247400 |
| novel ehrlichia and hepatozoon agents infecting the crab-eating fox (cerdocyon thous) in southeastern brazil. | this study evaluated infection by vector-borne agents in 58 crab-eating fox (cerdocyon thous l.) that were road-killed in an atlantic rainforest reserve in the state of espírito santo, southeastern brazil. spleen, lung, or blood samples collected from the foxes were tested in the laboratory by a battery of polymerase chain reaction (pcr) assays targeting bacteria of the genera rickettsia, borrelia, coxiella, anaplasma, and ehrlichia; and protozoa of the genera babesia, hepatozoon, and leishmania ... | 2013 | 23802461 |
| molecular detection of leishmania spp. in road-killed wild mammals in the central western area of the state of são paulo, brazil. | road-killed wild animals have been classified as sentinels for detecting such zoonotic pathogens as leishmania spp., offering new opportunities for epidemiological studies of this infection. | 2014 | 24963288 |
| in vitro infection by leishmania infantum in the peripheral blood mononuclear cell-derived macrophages from crab-eating foxes (cerdocyon thous). | wild canids are natural reservoirs of visceral leishmaniais (vl). in brazil, only the crab-eating fox (cerdocyon thous) is a natural reservoir of this zoonotic disease, but there is still a lack of understanding regarding the sylvatic transmission of the leishmania infantum infection. this is the first study on the isolation, cultivation and infection with l. infantum in the peripheral blood mononuclear cell-derived macrophages from crab-eating foxes. it is also the first to compare macrophages ... | 2015 | 26194430 |
| occurrence and molecular characterization of hemoplasmas in domestic dogs and wild mammals in a brazilian wetland. | hemotropic mycoplasmas are known to cause anemia in several mammalian species. the present work aimed to investigate the occurrence of mycoplasma spp. in wild mammals, domestic dogs and their respective ectoparasites, in southern pantanal region, central-western brazil. between august 2013 and march 2015, 31 nasua nasua, 78 cerdocyon thous, seven leopardus pardalis, 42 dogs, 110 wild rodents, and 30 marsupials were trapped and ectoparasites (ticks and fleas) found parasitizing the animals were c ... | 2017 | 28366511 |
| phylogenetic analysis of rabies virus isolated from canids in north and northeast brazil. | cases of canine rabies continue to occur in north and northeast brazil, and the number of notifications of rabies cases in wild canids has increased as a result of the expansion of urban areas at the expense of areas with native vegetation. in light of this, we performed molecular characterization of rabies virus isolates from dogs and cerdocyon thous from various states in north and northeast brazil. in all, 102 samples from dogs (n = 56) and cerdocyon thous (n = 46) collected between 2006 and ... | 2017 | 27671776 |
| fluorescent antibody test, quantitative polymerase chain reaction pattern and clinical aspects of rabies virus strains isolated from main reservoirs in brazil. | rabies virus (rabv) isolated from different mammals seems to have unique characteristics that influence the outcome of infection. rabv circulates in nature and is maintained by reservoirs that are responsible for the persistence of the disease for almost 4000 years. considering the different pattern of pathogenicity of rabv strains in naturally and experimentally infected animals, the aim of this study was to analyze the characteristics of rabv variants isolated from the main brazilian reservoir ... | 2015 | 26303004 |
| phylogeographic dispersion and diversification of rabies virus lineages associated with dogs and crab-eating foxes (cerdocyon thous) in brazil. | genetic lineages of dog-associated rabv still circulate in some areas of the north and northeast of brazil. in parallel, another rabv lineage circulates among wild canids in the northeast, particularly the crab-eating fox (cerdocyon thous). although previous studies and phylogenetic analyses have been carried out, the way in which these lineages are dispersed temporally and spatially remained to be elucidated. in this study, rabv n gene sequences isolated from canids in north and northeast brazi ... | 2013 | 23749047 |
| the emergence of wildlife species as a source of human rabies infection in brazil. | forty-five human rabies virus isolates from a wide geographical area of brazil were characterized using an anti-nucleoprotein monoclonal antibody panel and by partial nucleotide sequencing analysis of the nucleoprotein gene. three major antigenic groups related to the antigenic variants maintained in domestic dogs, vampire bats and marmosets were identified. phylogenetic analyses revealed that the viruses from dog-related cases segregated into four sister clades: three associated with dog-endemi ... | 2013 | 23433340 |
| first isolation and rflp genotyping of toxoplasma gondii from crab-eating fox (cerdocyon thous-linnaeus, 1766). | wild animals may play an important role in the transmission and maintenance of toxoplasma gondii in the environment. the purpose of the present study was to isolate and genotype t. gondii from a free-ranging crab-eating fox (cerdocyon thous-linnaeus, 1766). a crab-eating fox in critical health condition was attended in a veterinary hospital in recife, pernambuco state, brazil. the animal died despite emergency treatment. the brain was collected aseptically and destined for mouse bioassay. one is ... | 2017 | 28119049 |
| genotyping of toxoplasma gondii and sarcocystis spp. in road-killed wild mammals from the central western region of the state of são paulo, brazil. | road-killed wild animals host zoonotic pathogens such as toxoplasma gondii, offering a new opportunity for the epidemiological study of these infectious organisms. | 2016 | 27812655 |
| detection of antibodies to toxoplasma gondii in wild animals in brazil. | toxoplasmosis is a worldwide zoonosis caused by an obligate intracellular protozoan parasite, toxoplasma gondii, that affects all warm-blooded animals, including wild animals. the increased number of cases of parasitic infections is mainly due to the destruction of environmental conservation areas, which is driving wild animals out of their habitats and towards urban areas. in this study, the occurrence of t. gondii infection was investigated by the modified agglutination test (mat) in 26 differ ... | 2014 | 25278979 |
| the multiple and complex and changeable scenarios of the trypanosoma cruzi transmission cycle in the sylvatic environment. | in this study, we report and discuss the results generated from over 20 years of studies of the trypanosoma cruzi sylvatic transmission cycle. our results have uncovered new aspects and reviewed old concepts on issues including reservoirs, true generalist species, association of mammalian species with distinct discrete typing units - dtus, distribution of t. cruzi genotypes in the wild, mixed infections, and t. cruzi transmission ecology. using parasitological and serological tests, we examined ... | 2015 | 26200785 |
| trypanosoma cruzi tci and tcii transmission among wild carnivores, small mammals and dogs in a conservation unit and surrounding areas, brazil. | aiming to better understand the ecological aspects of trypanosoma cruzi transmission cycles, wild carnivores, small mammals and dogs were examined for t. cruzi infection in the serra da canastra national park region, brazil. isolates were genotyped using mini-exon gene and pcr-rflp (1f8 and h3) genomic targets. trypanosoma cruzi transmission was well established in the area and occurred in both wild and peridomestic environments. dog seroprevalence was 29·4% (63/214) and tci and tcii genotypes, ... | 2013 | 23062278 |
| natural infection of wild canids (cerdocyon thous and lycalopex gymnocercus) with the intraendothelial piroplasm rangelia vitalii in southern brazil. | rangelia vitalii is a piroplasm that infects canines, causing lesions typical of a hemolytic disorder. two wild canids, a crab-eating fox (cerdocyon thous) and a pampas fox (lycalopex gymnocercus), were presented for necropsy in setor de patologia veterinária at the universidade federal do rio grande do sul, porto alegre, brazil. on gross examination, both animals had pale mucosae and moderate tick infestation (amblyomma aureolatum). there was severe splenomegaly, and the liver had a diffusely o ... | 2015 | 26251988 |
| canine rangeliosis due to rangelia vitalii: from first report in brazil in 1910 to current day - a review. | canine rangeliosis (popular names: "nambi-uvú", i.e. ``bleeding ears''; "peste de sangue", i.e. ``bleeding plague''; and "febre amarela dos cães", i.e. ``yellow fever of dogs'') is a tick-borne haemolytic and haemorrhagic disease caused by the protozoan parasite rangelia vitalii which infects erythrocytes, leukocytes, and endothelial cells of blood capillaries. rangelia vitalii was first reported as a novel piroplasm of dogs in 1910 in brazil, a discovery that was met with skepticism at that tim ... | 2014 | 24950853 |
| environmentally associated ticks (acari: ixodidae) in campo grande, mato grosso do sul, brazil. | herein, we report tick species found on wild and domestic animals and in the environment during a one-year sampling period at the brazilian farming research company beef cattle unit (embrapa beef cattle), which is located within the urban area of campo grande, mato grosso do sul, brazil. from 55 wild hosts including six different species (nasua nasua, cebus spp., cerdocyon thous, myrmecophaga tridactyla, tamandua tetradactyla and dasyprocta aguti), 323 ticks were collected. amblyomma ovale ticks ... | 2013 | 24252958 |
| ecogeographical variation in skull shape of south-american canids: abiotic or biotic processes? | species morphological changes can be mutually influenced by environmental or biotic factors, such as competition. south american canids represent a quite recent radiation of taxa that evolved forms very disparate in phenotype, ecology and behaviour. today, in the central part of south america there is one dominant large species (the maned wolf, chrysocyon brachyurus) that directly influence sympatric smaller taxa via interspecific killing. further south, three species of similar sized foxes (lyc ... | 2017 | 27217595 |
| response of wild mammals to seasonal shrinking-and-expansion of habitats due to flooding regime of the pantanal, brazil. | the pantanal is a large savanna wetland (138,183 km2 in brazil), important for its wildlife, fed by tributaries of the upper paraguay river, center of south america (brazil, touching bolivia and paraguay). uplands are plateaus (250-1,200 m high, 215,000 km2 in brazil) and flatland is the pantanal (80-150 m high, 147,574 km2 in brazil). rivers are slow moving when they meet the flatland (slope 0.3-0.5 m/km east-west; 0.03-0.15 m/km north-south), periodically overflowing their banks, creating a co ... | 2006 | 17299935 |
| molecular detection of hepatozoon spp. in domestic dogs and wild mammals in southern pantanal, brazil with implications in the transmission route. | hepatozoon parasites comprise intracellular apicomplexan parasites transmitted to vertebrate animals by ingestion of arthropods definitive hosts. the present work aimed to investigate the occurrence of hepatozoon spp. in wild animals, domestic dogs and their respective ectoparasites, in southern pantanal region, central-western brazil, by molecular techniques. between august 2013 and march 2015, 31 coatis (nasua nasua), 78 crab-eating foxes (cerdocyon thous), seven ocelots (leopardus pardalis), ... | 2017 | 28291601 |
| increasing potential risk for american visceral leishmaniasis in amapá, brazil. | the present note discusses some evidence on the increasing potential risk for american visceral leishmaniasis (avl) transmission in the northern brazilian state of amapá, the guianan-amazon biome. | 2017 | 28001227 |
| niche partitioning among mesocarnivores in a brazilian wetland. | we investigated the home range size, habitat selection, as well as the spatial and activity overlap, of four mid-sized carnivore species in the central pantanal, mato grosso do sul, brazil. from december 2005 to september 2008, seven crab-eating foxes cerdocyon thous, seven brown-nosed coatis nasua nasua, and six ocelots leopardus pardalis were radio-collared and monitored. camera trap data on these species were also collected for the crab-eating raccoon procyon cancrivorus. we hypothesized that ... | 2017 | 27685854 |
| detection of wild animals as carriers of leptospira by pcr in the pantanal biome, brazil. | leptospiral infection is widespread in wildlife. in this context, wild ecosystems in tropical countries hold a vast biodiversity, including several species that may act as potential reservoirs of leptospires. the pantanal biome presents highly favorable environmental conditions for the occurrence of leptospirosis, such as high temperatures, constant flooding, and high biodiversity. the purpose of this study was to detect wild animals as carriers of leptospira sp. using direct methods (pcr and cu ... | 2016 | 27496621 |
| ventricular septal defect in a crab-eating fox (cerdocyon thous). | congenital heart diseases are not commonly diagnosed in wild animals. it is not surprising that few reports exist in the literature, so that prevalence of these anomalies is unknown in wild species. we report a case of a ventricular septal defect documented in a free-ranging crab-eating fox (cerdocyon thous). this animal presented with rapid, labored breathing, and on physical examination, pulmonary crackles and a holosystolic murmur were auscultated. the echocardiogram with doppler showed disco ... | 2016 | 27468048 |
| comparison of the lumbosacral plexus nerves formation in pampas fox (pseudalopex gymnocercus) and crab-eating fox (cerdocyon thous) in relationship to plexus model in dogs. | in this study, the spinal nerves that constitute the lumbosacral plexus (lsp) were dissected in two species of south american wild canids (pampas fox-pseudalopex gymnocercus, and crab-eating fox-cerdocyon thous). the nerves origin and distribution in the pelvic limb were examined and compared with the lsp model of the dog described in the literature. the lsp was formed by whole ventral branches of l5 at l7 and s1, and a contribution of a one branch from s2, divided in three trunks. the trunk for ... | 2016 | 26692361 |
| attractiveness of native mammal's feces of different trophic guilds to dung beetles (coleoptera: scarabaeinae). | mammal feces are the primary food and nesting resource for the majority of dung beetle species, and larval development depends on the quantity and quality of that resource. physiological necessities, competitive interactions, and resource sharing are common and suggest that dung beetles may show preferences for feces of greater nutritional quality, which may in turn impact beetle assemblages and community structure. this study investigated whether attractiveness of dung beetles to different reso ... | 2014 | 25528749 |
| a new acanthocephalan species (archiacanthocephala: oligacanthorhynchidae) from the crab-eating fox (cerdocyon thous ) in the brazilian pantanal wetlands. | a new species of oligacanthorhynchidae (acanthocephala) prosthenorchis cerdocyonis n. sp. is described from 17 specimens collected from the small intestine of the crab-eating fox cerdocyon thous linnaeus, 1766 (canidae: carnivora) found in the brazilian pantanal wetlands. specimens were studied using light and scanning electron microscopy. characteristic features distinguishing the new species from others already described are presented, such as size of the body, the position of lemnisci, size o ... | 2015 | 25291295 |
| natural infection of the wild canid, cerdocyon thous, with the piroplasmid rangelia vitalii in brazil. | canine rangeliosis, caused by the piroplasmid protozoon rangelia vitalii, is currently recognized as a reemerging disease that affects domestic dogs in brazil. in the present study, piroplasmid infection was searched in wild canids (20 cerdocyon thous and 4 lycalopex gymnocercus) in brazil. molecular analysis, based on pcr and dna sequencing of a portion of the 18s rrna gene, revealed that 30% (6/20) c. thous were infected by r. vitalii. blood and bone marrow samples from one of the r. vitalii-i ... | 2014 | 24685025 |
| bergmann's rule across the equator: a case study in cerdocyon thous (canidae). | 1. the variation in cranial size of the crab-eating fox cerdocyon thous was analysed in relation to latitude and several environmental variables throughout its distribution in south america. 2. we tested the existence of clines to determine whether this canid follows bergmann's rule to the north and south of the equator. also, using niche modelling, we analysed whether the climatic changes during the last glaciation could have influenced bergmann's rule in this species. we quantified the size of ... | 2013 | 23550718 |
| animal-based medicines used in ethnoveterinary practices in the semi-arid region of northeastern brazil. | this work documents the zootherapeutic practices in ethnoveterinary medicine (evm) of pedra lavrada (6°45's, 36°28'w), northeastern brazil. we interviewed 23 people (22 men and 1 woman), who provided information on animal species used as remedies, body parts used to prepare the remedies, and illnesses for which the remedies were prescribed. we calculated the use-value to determine the most important species. interviewees cited 11 animal taxa. the main species mentioned were ram - ovis aries (uv= ... | 2012 | 22751649 |
| non-invasive monitoring of the estrous cycle in captive crab-eating foxes (cerdocyon thous). | in this study, four crab-eating fox females (cerdocyon thous) maintained at the federal university of mato grosso zoo, cuiabá, brazil, were investigated for 16 mo, using transabdominal ultrasonography and measurement of estradiol and progesterone concentrations in blood plasma and feces. blood collection and ultrasonography were performed once a month, whereas fecal collections were performed three times a week. during the experimental period, there was an annual estrous cycle in all females, wi ... | 2012 | 21958628 |