Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| [occurrence of leptospira antibodies in the blood of game animals]. | the blood serum of game was examined for the presence of antibodies to leptospiras in 1987-1989. a total of 792 blood sera from animals belonging to 14 zoo-species were examined (tab. i). the blood serum of red deer (cervus elephus) was examined the most often within the group of animals, in 398 cases, i.e. 50.2%, followed by 165 blood sera of wild boar (sus scrofa), representing 20.8%, and by 136 blood sera of roedeer (capreolus capreolus), representing 18.6%. small numbers of blood sera of the ... | 1993 | 8488630 |
| identification of regional variants of the rabies virus within the canadian province of ontario. | although rabies outbreaks in most parts of the world tend to be host species-specific the rabies currently enzootic in the canadian province of ontario is hosted by two wildlife species, the red fox and the striped skunk. previous studies employing monoclonal antibody panels failed to identify any host-specific differences in ontario rabies virus street isolates, but certain observations suggested the existence of more than one viral strain in terrestrial mammals of this region. the extent of va ... | 1993 | 8492088 |
| biochemical, biological, and genetic characterization of a sylvatic isolate of trichinella. | biological, biochemical, and genetic relationships of trichinella isolates were assessed and compared from 3 species of illinois fur-bearing mammals. tongue muscle collected from 1987 through 1989 from 323 raccoons (procyon lotor), 9 red fox (vulpes fulva), and 1 coyote (canis latrans) were digested and trichinella muscle larval prevalences and mean intensities (larvae/g) determined. the prevalence and mean intensity of tongue muscle-stage larvae were 2.8% and 44.4% and 326 and 2 larvae/g for ra ... | 1993 | 8501590 |
| reproduction of red foxes (vulpes vulpes linnaeus, 1758) in north-eastern spain: a preliminary report. | red fox reproduction in north-eastern spain was studied by analysing the reproductive tracts of 84 females. mean litter size was estimated to be 3.32 cubs per female, most of the births occurring from mid-march to mid-april. | 1993 | 8518441 |
| efficacy of three oral rabies vaccine-baits in the red fox: a comparison. | the three commercial vaccine-baits currently available in western europe were fed to caged red foxes. the vaccines were: sadb19, bundesforschunganstalt für viruskrankheiten der tiere-tübingen, germany: a live attenuated rabies strain; sag1 virbac, france: low pathogenicity mutant of the sad strain and "raboral", rhône-mérieux, france: a vaccinia rabies glycoprotein recombinant (v-rg). protection rates conferred by the vaccine-baits were respectively 7 of 15 (sadb19), 5 of 9 (sag1) and 6 of 12 (v ... | 1993 | 8128598 |
| in vitro culture of silver fox embryos. | this experiment was designed to establish in vitro culture methods for silver fox embryos in order to develop the methods for evaluation of the post-thaw viability of frozen embryos in future studies. artificially inseminated silver fox females were killed humanely on predetermined days after insemination and oviducts and uteri were flushed for embryos. the embryos were cultured in modified tcm 199 or in the same medium supplemented with silver fox oviductal tissue suspension for varying periods ... | 1993 | 16727359 |
| [effect of the "star" gene on the rate of melanoblast migration in silver fox (vulpes vulpes) embryos]. | 1993 | 8508131 | |
| [comparative analysis of the level of heterozygosity for glucose phosphate isomerase (gpi) locus in silver foxes (vulpes vulpes) of domesticated and control populations]. | this communication is the first step of the studies on the correlation between protein polymorphism and the level of phenotypic diversity. the level of heterozygosity for glucose phosphate isomerase (gpi) locus was analysed in two populations of silver foxes. one of them has been selected for domestic behaviour during many years. this selection vector gave rise to many phenotypic novelties; 46% of the foxes analyzed has aberrant phenotypes. another population was control bred under the same cond ... | 1993 | 8354477 |
| [analysis of peripheral blood serotonin in domesticated silver foxes (vulpes vulpes) as a major gene marker of domesticated behavior]. | a segregation analysis of inheritance of the blood serotonin level in a domesticated silver fox population was performed (104 foxes from 4 pedigrees). the results of the analysis point to the effect of a major-gene in the control of this quantitative trait (dominance coefficient of lower level is 0.79), and suggest that breeding for domestic behavior is accompanied by selection against heterozygosity with respect to this major-gene. the lower blood serotonin level revealed in more domesticated f ... | 1993 | 8486270 |
| transcriptional regulation in the testis: a role for transcription factor ap-1 complexes at various stages of spermatogenesis. | the products of two proto-oncogenes, c-fos and c-jun, have been implicated in signal transduction pathways as regulators of gene expression. both proto-oncogenes are members of gene families encoding closely related proteins that together make up transcription factor ap-1. the expression of members of this transcription factor has been associated with cellular pathways that result in both mitosis and differentiation. we have been studying the process of spermatogenesis, which is a complex, conti ... | 1993 | 8426749 |
| reproduction in farmed silver fox vixens, vulpes vulpes, in relation to own competition capacity and that of neighbouring vixens. | reproductive performance in 34 one-year old and 5 two-year old farmed silver fox vixens was recorded and related to their competition capacity and that of neighbouring vixens. the vixens were tested for competition capacity at 5-7 months of age, and divided into high (hcc), medium (mcc) and low (lcc), according to their competition capacity score. after selection, they were placed together with neighbours as follows; hcc with lcc or hcc neighbours, mcc with mcc neighbours and lcc vixens with lcc ... | 1993 | 21395729 |
| the relationship between competition capacity and reproduction in farmed silver-fox vixens, vulpes vulpes. | from the outset, poor reproduction in some of the vixens has been a problem in silver-fox farming. some vixens fail to bear cubs and others kill their cubs just after delivery. to get a better understanding of reproductive behaviour in farmed silver fox vixens, their behaviour was compared with earlier observations made on groups of wild-living red foxes (vulpes vulpes). the results indicated similarities in the reproductive behaviour of farmed silver foxes and group-living wild red foxes. thus ... | 1993 | 21395713 |
| sperm abnormalities in silver fox (vulpes vulpes) semen selected for artificial insemination. | sperm morphology was examined in fresh ejaculates accepted for insemination. the material included 161 ejaculates of 36 male silver foxes. samples were fixed, stained with eosin/nigrosin and evaluated microscopically. the abnormal spermatozoa were categorized by the location of the defect. the mean (+/- sd) percentage of morphologically normal spermatozoa was 87.55 +/- 10.45. the incidence of sperm defects was low and variation high in all defect classes. defects of tails of spermatozoa accounte ... | 1993 | 8229937 |
| thermoregulatory responses to thermal stimulation of the preoptic anterior hypothalamus in the red fox (vulpes vulpes). | the preoptic anterior hypothalamus (poah) thermoregulatory controller can be characterized by two types of control, an adjustable setpoint temperature and changing poah thermal sensitivity. setpoint temperatures for shivering (tshiver) and panting (tpant) both increased with decreasing ambient temperature (ta), and decreased with increasing ta. the poah controller is twice as sensitive to heating as to cooling. metabolic rate (mr) increased during both heating and cooling of the poah. resting te ... | 1994 | 8529002 |
| immobilization of free-ranging red foxes (vulpes vulpes) with tiletamine hydrochloride and zolazepam hydrochloride. | we evaluated zoletil on free-ranging red foxes (vulpes vulpes) in spain. twenty-two pup and 49 adult wild-caught red foxes (vulpes vulpes) were immobilized with a combination of tiletamine hydrochloride and zolazepam hydrochloride in a 1:1 proportion (zoletil). mean (+/- se) zoletil doses were 10.57 (+/- 0.41) mg/kg (range = 7.58-15.39 mg/kg, n = 22) for pups and 10.51 (+/- 0.33) mg/kg (range = 5.88-16.67 mg/kg, n = 45) for adults. mean induction and first recovery times for pups were 2.3 (+/- 0 ... | 1994 | 7760497 |
| strain differences in mouse response to odours of predators. | sexually mature male mice of three different strains (cd-1 outbred, cba, and c57bi/6j inbred) were exposed in an arena to a small black cylinder (35 mm film container), filled with faeces of either a mouse predator (red fox, vulpes vulpes) or a non-predator (rabbit, oryctolagus cuniculus) during a 3 min test. control animals were given an empty container. locomotor activity and behavioural responses in the arena were scored. hot-plate response (50 ± 0.5°c) was measured 15 min before and immediat ... | 1994 | 24895975 |
| testosterone production in fetal testes of the silver fox. | testosterone content was studied in fetal serum and testes of silver foxes during different periods of prenatal life. the first sign of testosterone synthesis in the testes could be detected starting from the 31st day of gestation by radioimmunoassay. subsequently its content sharply increased and showed maximum value on the 50th day. detectable serum testosterone level in male silver fox fetus was noted from the 40th day, its serum concentration increased in prenatal life, but only insignifican ... | 1994 | 16727535 |
| the endocrinology of gestation failure in foxes (vulpes vulpes). | the endocrine basis of reproductive failure in red fox vixens was examined over two breeding seasons in a total of 11 animals. weekly blood samples were assayed for progesterone, prolactin, lh and cortisol. vaginal smears taken every 2 days over the oestrous period indicated that all vixens had mated. vixens that successfully gave birth to a litter of cubs demonstrated significantly higher plasma progesterone and prolactin concentrations but significantly lower cortisol concentrations than did f ... | 1994 | 8021849 |
| [the circadian dynamics of melatonin concentration in the epiphysis, plasma and retina of silver foxes]. | a definite diurnal rhythm of the melatonin concentration was observed in the silver fox pineal gland, plasma and retina, with the maximum at night, the minimum in the morning, and intermediate values in evenings. the interrelationship among the melatonin levels in the tissues under study, is discussed. | 1994 | 7527705 |
| experimental strategies for the development of an immunocontraceptive vaccine for the european red fox, vulpes vulpes. | the development of an immunocontraceptive vaccine to control fox populations in australia would confer considerable advantages in controlling the long-term impact of this predator on native and endangered species. studies are currently under way to identify sperm antigens that might be used in such a vaccine, and some of these studies are described. it is proposed that such a vaccine would be delivered orally in a bait, thereby stimulating a mucosal immune response to the foreign antigen(s). suc ... | 1994 | 7831482 |
| behavioural changes in free-ranging red foxes (vulpes vulpes) due to sarcoptic mange. | 1994 | 7676933 | |
| experimental rabies infection of non-nervous tissues in skunks (mephitis mephitis) and foxes (vulpes vulpes). | non-neural tissues, from three male and four female stripped skunks (mephitis mephitis), 5 to 7 months old, and one male and two female red foxes (vulpes vulpes), 12 to 16 months old, experimentally infected with street rabies virus, were examined by light microscopic immunohistochemical and electron microscopic methods. this is the first report of ultrastructural lesions in rabies-infected adrenal medulla, cornea, and nasal glands. using the streptavidin biotin peroxidase technique, antigen was ... | 1994 | 8140732 |
| detection of canine distemper viral antigen in foxes (vulpes vulpes) in northwestern spain. | we describe the lesions of natural distemper in red foxes (vulpes vulpes) in spain. the avidin-biotin-peroxidase complex (abc) technique and a monoclonal antibody against the nucleocapsid protein of canine distemper virus were successfully used to confirm canine distemper diagnosis. | 1994 | 8151832 |
| factors affecting dirofilaria immitis prevalence in red foxes in northeastern spain. | we determined the prevalence of dirofilaria immitis (nematoda, filariidae) among 433 red foxes (vulpes vulpes) in northeastern spain, between 1990 and 1992. forty-six (11%) of 433 foxes were infected; the intensity ranged from 1 to 36 (mean +/- se; 4.39 +/- 0.92) nematodes per host. the prevalence of d. immitis was higher in foxes inhabiting riparian zones of the study area. this population has a very high juvenile/adult ratio. heartworm prevalences did not differ among host sex, weight, or fat ... | 1994 | 7760485 |
| [the helminth fauna of the red fox (vulpes vulpes linne 1758) in the administrative district of karlsruhe. 1. cestodes]. | between february 1989 and january 1990 a total of 801 red foxes were examined for the presence of cestodes. echinococcus multilocularis could be noted with an infection rate of 11.6% in the small intestine of the red fox. the following other cestodes were found (in order of frequency) taenia crassiceps (19.9%), mesocestoides spp. (16.6%), taenia polyacantha (7.0%), hydatigena taeniaeformis (0.7%), dipylidium caninum (0.5%) and diphyllobothrium latum (0.5%). infections with echinococcus multilocu ... | 1994 | 7924977 |
| a molecular epidemiological study of rabies virus in central ontario and western quebec. | rabies persists in ontario wildlife in two predominant species: the red fox (vulpes vulpes) and the striped skunk (mephitis mephitis). a protocol applying reverse transcription/polymerase chain reaction (rt/pcr) and restriction endonuclease analysis (rea) to the rabies virus nucleoprotein gene was previously reported by nadin-davis et al. (journal of general virology 74, 829-837, 1993) to be useful for discrimination of rabies virus variants in ontario. four main types, which showed no host spec ... | 1994 | 7931145 |
| lyme disease spirochetes in a wild fox (vulpes vulpes schrencki) and in ticks. | lyme disease spirochetes were demonstrated in a wild female fox (vulpes vulpes schrencki) and in ixodes persulcatus ticks collected from the fox on sapporo, hokkaido, japan. spirochetes were detected in i. persulcatus, as well as skin lesions, brain, heart, kidney, and liver of the fox. five of seven isolates reacted with a monoclonal antibody against borrelia afzelii specific osp b. deoxyribonucleic acid (dna) relatedness of a brain isolate was 89% to b. afzelii, and ranged from 50 to 67% to th ... | 1994 | 7933292 |
| serologic survey for leishmaniasis in free-living red foxes (vulpes vulpes) in italy. | sera from fifty free-ranging red foxes (vulpes vulpes) from the imperia province, liguria, italy, were examined for antibodies against leishmania spp. by both immunofluorescence assay (ifa) and enzyme linked immunosorbent assay (elisa), from january to may 1992. nine of 50 animals (18%) had antibodies against leishmania spp. utilizing both ifa and elisa tests. | 1994 | 7933296 |
| a study on the predilection sites of trichinella spiralis muscle larvae in experimentally infected foxes (alopex lagopus, vulpes vulpes). | studies were carried out on the predilection sites of trichinella spiralis muscle larvae in experimentally infected arctic foxes (alopex lagopus) and silver foxes (vulpes vulpes) reared in cages. the highest number of larvae per gram tissue was found in the muscles of the legs, eyes, diaphragm, and tongue. the 2 fox species showed no significant differences with regard to predilection sites. | 1994 | 7942377 |
| [the helminth fauna of red foxes (vulpes vulpes linne 1758) in the administrative district of karlsruhe. 2. nematodes]. | between february 1989 and january 1990 a total of 801 foxes were examined for the presence of nematodes in the stomach and the small intestine and 835 foxes for the presence of trichinella spiralis larvae. the animals came from the german federal administration area of karlsruhe. the following nematodes in order of frequency were found: toxocara canis (30.2%), uncinaria stenocephala (24.3%), toxascaris leonina (2.0%) and ancyclostoma caninum (1.1%). the investigation of the muscles of all animal ... | 1994 | 7956813 |
| [mapping the silver fox genome. iv. determination of chromosomal location of genes for ornithine carbamoyltransferase and prion protein]. | the location in chromosomes of genes encoding ornithine carbamoyltransferase (ornithine transcarbamylase, otc) and prion protein (prp) was determined by southern blotting of dnas obtained from a panel of hybrid (for x chinese hamster) somatic cell clones, with human otc and chinese hamster prp dna fragments used as probes. the gene otc was located in the x-chromosome and prp was located in chromosome 14 of the fox. | 1994 | 7958796 |
| polychlorinated biphenyl congeners in foxes in germany from 1983 to 1991. | red foxes served as a biological indicator for the temporal development of environmental contamination with polychlorinated biphenyls (pcb). the concentration of pcb congeners nos. 28, 49, 52, 101, 138, 153, and 180 were analyzed in the body fat of 80 foxes (canis vulpes) from germany. the samples were from animals that had been submitted for examination in 1983, 1987, and 1991. throughout this time period, a reduction was seen in the concentration of the highly chlorinated biphenyls 138, 153, a ... | 1994 | 8110019 |
| background prevalence of tetracycline-like fluorescence in teeth of free ranging red foxes (vulpes vulpes), striped skunks (mephitis mephitis) and raccoons (procyon lotor) in ontario, canada. | we collected and examined teeth from 3406 red foxes (vulpes vulpes) collected in ontario, canada, from 1978 to 1986, prior to large scale rabies vaccine baiting. we found tetracycline-like fluorescence in five (0.2%) of the samples. also, we observed similar fluorescences in five (0.4%) of 1103 striped skunks (mephitis mephitis) and in six (0.8%) of 744 raccoons (procyon lotor). the low prevalence of such marks would not appear to invalidate the use of tetracycline as a marking agent in vaccine ... | 1994 | 8151813 |
| effects of predator removal on vertebrate prey populations: birds of prey and small mammals. | we studied the effects of removal of breeding nomadic avian predators (the kestrel, falco tinnunculus and tengmalm's owl, aegolius funereus) on small mammals (voles of the genera microtus and clethrionomys and the common shrew, sorex araneus) during 1989-1992 in western finland to find out if these predators have a regulating or limiting impact on their prey populations. we removed potential breeding sites of raptors from five manipulation areas (c. 3 km(2) each), whereas control areas had nest- ... | 1995 | 28306779 |
| intestinal helminths of the red fox (vulpes vulpes l.) in galicia (northwest spain). | the intestinal helminth fauna of 201 specimens of vulpes vulpes, captured in galicia (northwest spain), was investigated. eight species were found: toxocara canis (23% of host specimens), toxocara cati (0.5%), toxascaris leonina (1%), uncinaria stenocephala (28%), seuratascaris numidica (0.5%), taenia crassiceps (23%), mesocestoides litteratus (2.5%) and dipylidium caninum (0.5%). we discuss possible relationships between human population density and the prevalence of infection of fox by intesti ... | 1995 | 8834508 |
| immunogenic and antigenic activity of an experimental oral rabies vaccine prepared from the strain vnukovo-32/107. | the immunogenic and antigenic activity of an experimental live oral rabies vaccine prepared from the strain vnukovo-32/107 was evaluated on the basis of results obtained in 3 sets of experiments. these were carried out as model experiments on white mice, then on target animals--red foxes (vulpes vulpes) and a related species--farm-bred polar foxes (alopex lagopus). for quantitative determination of the immunogenic activity of the orally or subcutaneously administered rabies vaccines in model exp ... | 1995 | 7762124 |
| field trials of a recombinant rabies vaccine. | to improve both safety and stability of the vaccines used in the field to vaccinate foxes against rabies by the oral route, a recombinant vaccinia virus, expressing the glycoprotein of rabies virus (vvtggrab) has been developed. vvtggrab innocuity was verified in target species and in domestic animals as well as in numerous wild animal species that could compete with the red fox in consuming vaccine baits in europe. oral immunization of foxes, by distributing vvtggrab vaccine-baits, was undertak ... | 1995 | 7784127 |
| isomer-specific analysis of polychlorinated biphenyls and 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (teqs) in red fox and human adipose tissue from central italy. | the general exposure of humans and foxes to polychlorinated biphenyls (pcbs) and ddt in italy was determined by analysis of adipose tissue samples collected from 1991-1992. sigma pcb concentrations varied between 1.0 and 2.6 micrograms/g (wet wt.). sigma ddt concentrations ranged from 1.6 to 5.0 micrograms/g (wet wt.). about thirty-five pcb congeners were identified in most samples. pcb congeners of iupac nos. 138, 153, and 180 were the most abundant compounds, accounting for an average of 50% o ... | 1995 | 7794013 |
| [cysts of the hepatoid glands]. | cysts are specific rounded closed structures characteristic of some hepatoid glands. they never occur in other cutaneous glands of mammals. the cysts of the circumanal hepatoid glands of the dog and polar fox, the violet gland of the polar and common red fox, and the groin pouches of three species of gazelles were studied. the cyst is enclosed in a cellular wall saturated with glycogen. the amorphous content of the cyst is rich in hydrophobic lipids and it also contains protein. the cysts of the ... | 1995 | 7894314 |
| elimination of fox rabies from belgium using a recombinant vaccinia-rabies vaccine: an update. | to improve both safety and stability of the vaccines used in the field to vaccinate foxes against rabies by the oral route, a recombinant vaccinia virus, expressing the glycoprotein of rabies virus (vvtggrab) has been developed. vvtggrab innocuity was verified in target species and in domestic animals as well as in numerous wild animal species that could compete with the red fox in consuming vaccine baits in europe. oral immunization of foxes, by distributing vvtggrab vaccine-baits, was undertak ... | 1995 | 8545965 |
| cerebral coeneurosis in chamois (rupicapra pyrenaica). | two cases of cerebral coeneurosis in chamois (rupicapra pyrenaica) from catalonia (northeastern spain) are described. this disease, of which few cases have been reported, may, in fact, be relatively frequent. although the characteristic symptom of the disease in sheep is circling, that symptom was not observed in this study. chamois may act as a host within the sheep-shepherd-dog cycle, but is probable that red fox (vulpes vulpes) also acts as a definitive host. | 1995 | 8546018 |
| antibody response to rabbit viral hemorrhagic disease virus in red foxes (vulpes vulpes) consuming livers of infected rabbits (oryctolagus cuniculus). | six red foxes (vulpes vulpes) were given oral doses of homogenized liver from rabbits (oryctolagus cuniculus) that died from rabbit viral hemorrhagic disease (rvhd) and four control foxes were given liver from uninfected rabbits. antibodies to rvhd virus were monitored over 6 months. there was a pronounced antibody response 7 days after exposure which persisted to 14 days and then diminished. low titers still were evident in three foxes at the end of the experiment. based on these results, fox s ... | 1995 | 8592388 |
| clinical picture and antibody response to experimental sarcoptes scabiei var. vulpes infection in red foxes (vulpes vulpes). | three red foxes (vulpes vulpes) were experimentally infected with sarcoptes scabiei isolated from a naturally infected wild red fox. a fourth red fox served as a control. the first signs of sarcoptic mange became evident on the 31st day post infection (dpi). the signs gradually increased thereafter and between dpi 49 and 77 characteristic lesions of hyperkeratosis developed. two of the infected foxes developed severe sarcoptic mange, and one of these animals died on dpi 121. the third fox develo ... | 1995 | 8669378 |
| prevalence of antibodies to toxoplasma gondii in wild mammals of missouri and east central kansas: biologic and ecologic considerations of transmission. | sera from 273 wild mammals from missouri and kansas (usa), collected between december 1974 and december 1987, were tested for the presence of antibodies to toxoplasma gondii using the sabin-feldman dye test. sixty-five (24%) had antibodies at titers of > or = 1:8, including 38 (66%) of 58 carnivores, 14 (15%) of 94 omnivores, 13 (11%) of 117 herbivores, and none of four insectivores. the prevalence of antibodies in mice (mus musculus and peromyscus spp.) and rats (rattus norvegicus and sigmodon ... | 1995 | 7563419 |
| epidemiological studies on intestinal helminth parasites of rural and urban red foxes (vulpes vulpes) in the united kingdom. | an epidemiological study of intestinal helminths in 843 foxes (vulpes vulpes) from southern england revealed the presence of 13 parasite species: five nematodes--toxocara canis (prevalence 55.9%), toxascaris leonina (1.5%), uncinaria stenocephala (68.0%), trichuris vulpis (0.5%) and capillaria aerophila (0.2%); four cestodes--taenia pisiformis (13.8%), taenia hydatigena (2.5%), echinococcus granulosus (0.1%) and dipylidium caninum (3.8%); two trematodes--brachylaima recurva (2.9%) and cryptocoty ... | 1995 | 7571336 |
| [epidemiology and campaign against rabies in france and in europe]. | the red fox (vulpes vulpes) is the reservoir and vector of rabies in western europe. field trials to vaccinate it with vaccine-baits dispatched in the fields were carried out in switzerland since 1985. when repeated twice a year in spring and autumn, for at least two years successively, this method was proven to be more efficacious to eliminate rabies than the destruction of fox population by shooting or gassing. since 1986, the same technique was used and adapted in france with baits carrying v ... | 1995 | 7583457 |
| comparison of the susceptibility of the red fox (vulpes vulpes) to a vaccinia-rabies recombinant virus and to cowpox virus. | sylvatic rabies can be efficiently controlled by vaccination of foxes with a vaccinia-rabies recombinant virus. however, the risk of recombination between the engineered vaccine virus and other orthopoxviruses endemic in wildlife, such as cowpox virus, still needs to be investigated. in this study, foxes inoculated orally and intradermally with cowpox virus were found to be not very susceptible to cowpox virus, which was isolated from only the oropharynx and tonsils, at low titre and for only fi ... | 1995 | 7625119 |
| comparative anatomy of the cardiac foramen ovale in cats (felidae), dogs (canidae), bears (ursidae) and hyaenas (hyaenidae). | the structure of the foramen ovale from 16 species representing 4 carnivore families, the felidae, canidae, ursidae and hyaenidae, was studied using the scanning electron microscope. the felidae were represented by 9 domestic cat fetuses (felis catus), 2 snow leopard neonates (uncia uncia), an ocelot neonate (leopardus pardalis), 2 lion neonates (panthera leo), a panther neonate (panthera pardus) and 3 tigers (neofelis tigris), comprising 2 fetuses and a neonate. the canidae were represented by ... | 1995 | 7649822 |
| high-resolution gtg-banding patterns of dog and silver fox chromosomes: description and comparative analysis. | the gtg-banding patterns and ideograms of two canid species, the domestic dog and the silver fox, are presented and compared. for both species the number of bands visualized has increased to well over 400. a standard dog karyotype is proposed. | 1995 | 7698019 |
| echinococcus multilocularis (cestoda), the causative agent of alveolar echinococcosis in humans: first record in poland. | echinococcus multilocularis, the causative agent of human alveolar echinococcosis, was found for the first time in poland in 2 of 20 red foxes (vulpes vulpes), originating from the area of gdansk (northern poland). this finding supports the hypothesis that the endemic area of this parasite in central europe (belgium, france, luxembourg, switzerland, liechtenstein, germany, and austria) is not an isolated focus as previously anticipated but is connected with the large endemic zone in russia. | 1995 | 7707218 |
| quantification of residual virulence of the vnukovo-32/107 rabies virus vaccination strain. | the present work summarizes the results of 11 groups of experiments carried out with the aim to complexly quantify the residual virulence of a cold mutant of the vnukovo-32/107 rabies virus vaccination strain intended for the preparation of an oral rabies vaccine (kamark) for the immunization of free-living carnivores. according to who prescriptions, residual virulence was quantified in experiments on carnivores, mainly red foxes (vulpes vulpes)--the presumed target species, and farm-bred polar ... | 1995 | 7740717 |
| a seroepidemiological survey for orthopox virus in the red fox (vulpes vulpes). | 703 blood samples from red foxes (vulpes vulpes) were investigated to determine the prevalence of antibody against an orthopox virus (vaccinia virus strain elstree). a blocking-elisa based on a neutralizing monoclonal antibody was used. in this assay 46 sera (6.5%) were positive with titers of 1:2 to 1:16. elisa-results were confirmed by the plaque reduction test with 44 of the 46 sera reacting positively. the specificity of antibodies in 21 selected sera was also demonstrated by western blot an ... | 1995 | 7740763 |
| an evaluation of repellents to suppress browsing by possums. | the efficacy in feeding suppression trials with possums (trichosorus vulpecula kerr) of six synthetic odorous chemicals uniquely associated with various of the mustelidae species and of the red fox (vulpes vulpes) has been evaluated with respect to several proprietary repellents. the predator odors, two proprietary repellents, and two other repellent formulations (olive oil in petroleum jelly and a synthetic fermented egg odor cocktail) were applied as 5% w/v solutions in paraffin to the foliage ... | 1995 | 24233684 |
| [circadian changes in the levels of sex and glucocorticoid hormones in the peripheral blood plasma of female silver foxes]. | domesticated and wild silver fox vixens were shown to differ in their diurnal contents of cortisol and progesterone in the blood plasma. the data obtained reveal that domestication of silver fox vixens modifies their diurnal rhythms of the adrenocortical steroid activity. | 1995 | 9026261 |
| courtship and mortality in foxes (vulpes vulpes). | 1995 | 7610544 | |
| habitat richness affects home range size in the red fox vulpes vulpes. | the spatial behaviour of the red fox vulpes vulpes shows a great flexibility (voigt and macdonald, 1984). home range size varies from 10 to over 5000 ha (macdonald, 1987; voigt, 1987). in carnivores, variations in home range size, weighed for body mass (gittleman and harvey, 1982), are largely related to differences in habitat productivity, but the intraspecific local variation in home range size can be only partially explained by differences in productivity. macdonald (1981, 1983) suggested tha ... | 1996 | 24896422 |
| seroprevalence of orthopox virus specific antibodies in red foxes (vulpes vulpes) in the federal state brandenburg, germany. | the prevalence of orthopox virus (opv)-specific antibodies in 1,040 red foxes (vulpes vulpes) was evaluated on a large scale in the german federal state brandenburg. serum samples were selected from 809 communities within the study area from january 1991 to september 1994 by simple random sampling. screening was carried out by an indirect enzyme-linked immunosorbent assay (elisa). orthopox virus-specific antibodies were found in 162 (16%) of the 1,040 fox sera. furthermore 154 (15%) sera were co ... | 1996 | 8722277 |
| cluster of rabies cases of probable bat origin among red foxes in prince edward island, canada. | between 15 november and 13 december 1993, three cases of rabies of probable bat origin were confirmed in red foxes (vulpes vulpes) from the same area of prince edward island, canada, previously thought to be free of rabies in terrestrial mammals. such clusters have rarely been described in north america. | 1996 | 8722290 |
| [the "dangerous fox tapeworm" (echinococcus multilocularis) and alveolar echinococcosis of humans in central europe]. | according to the present status of knowledge, endemic echinococcus multilocularis infections in foxes (vulpes vulpes) are known to occur in the following countries of central europe: belgium (southern parts), luxembourg, france (massif central and eastern parts), switzerland (21 of 26 cantons) liechtenstein, austria (6 of 9 provinces), germany (812 of 16 federal states), and poland (northern parts). the prevalence rates of e. multilocularis are highly variable regionally and range between > 1 an ... | 1996 | 8765534 |
| field use of a vaccinia-rabies recombinant vaccine for the control of sylvatic rabies in europe and north america. | during recent years, most research on the control of sylvatic rabies has concentrated on developing methods of oral vaccination of wild rabies vectors. to improve both the safety and the stability of the vaccine used, a recombinant vaccinia virus, which expresses the immunising glycoprotein of rabies virus (vrg), has been developed and tested extensively in the laboratory as well as in the field. from 1989 to 1995, approximately 8.5 million vrg vaccine doses were dispersed in western europe to v ... | 1996 | 9025144 |
| on physaloptera sibirica petrow et gorbunow, 1931 (nematoda: physalopteridae) parasitizing iberian mammals. | faunistic and morphological study of physaloptera sibirica petrow et gorbunow, 1931 (nematoda: physalopteridae), a nematode isolated in spain from three mammal species: red fox, vulpes vulpes (linnaeus, 1758) (carnivora: canidae), eurasian badger, meles meles (linnaeus, 1758) (carnivora: mustelidae), and garden dormouse, eliomys quercinus (linnaeus, 1766) (rodentia: myoxidae) in the iberian peninsula. morphological features of cephalic and caudal regions of males are presented for the first time ... | 1996 | 9077116 |
| the development and use of a vaccinia-rabies recombinant oral vaccine for the control of wildlife rabies; a link between jenner and pasteur. | to improve both safety and stability of the oral vaccines used in the field to vaccinate foxes against rabies, a recombinant vaccinia virus, which expresses the immunizing g protein of rabies virus has been developed by inserting the cdna which codes for the immunogenic glycoprotein of rabies virus into the thymidine kinase (tk) gene of the copenhagen strain of vaccinia virus. the efficacy of this vaccine was tested by the oral route, primarily in foxes. the immunity conferred, a minimum of 12 m ... | 1996 | 8666066 |
| chromosome localization of the genes for growth hormone, somatostatin peptide, ornithine transcarbamylase, and prion protein in silver fox (vulpes fulvus). | 1996 | 8875899 | |
| applications of pox virus vectors to vaccination: an update. | recombinant pox viruses have been generated for vaccination against heterologous pathogens. amongst these, the following are notable examples. (i) the engineering of the copenhagen strain of vaccinia virus to express the rabies virus glycoprotein. when applied in baits, this recombinant has been shown to vaccinate the red fox in europe and raccoons in the united states, stemming the spread of rabies virus infection in the wild. (ii) a fowlpox-based recombinant expressing the newcastle disease vi ... | 1996 | 8876138 |
| sexually dimorphic aspects of spontaneous activity in meadow voles (microtus pennsylvanicus): effects of exposure to fox odor. | in this study, a multivariate analysis of the locomotor activity of adult, breeding male and female meadow voles (microtus pennsylvanicus) was conducted. overall, male voles made more movements and spent more time in the center of the activity chambers than did female voles. the authors further investigated the effects of brief exposure (3 min) to predator (red fox [vulpes vulpes]) odor and various control odors (butyric acid, extract of orange) on subsequent activity. control odors had no effec ... | 1996 | 8919015 |
| angiostrongylus vasorum infection in foxes (vulpes vulpes) in cornwall. | a post mortem examination on a young fox which had been observed to be clinically ill revealed a severe infection with angiostrongylus vasorum. a further 11 foxes were examined and four were infected with the parasite; three of these also had advanced lesions of sarcoptic mange. the cases all occurred outside the previously defined focus of endemic infection for dogs in cornwall and they appear to be the first recorded cases of a vasorum in foxes in the united kingdom. | 1996 | 8931300 |
| a helminthological survey of wild red foxes (vulpes vulpes) from the metropolitan area of copenhagen. | sixty-eight red foxes were collected from the metropolitan area of copenhagen and examined for helminth infections. standard faecal flotations for intestinal parasites gave the following results: strongyle eggs (75.0%), capillaria eggs (36.8%), toxocara eggs (23.5%), taenia eggs (1.5%), and coccidia oocysts (2.9%). gastrointestinal helminths were collected from 21 of the 68 foxes with the following specimens found: uncinaria stenocephala (85.7%), toxocara canis (81.0%), taenia spp. (38.1%), meso ... | 1996 | 8960222 |
| microsatellite differentiation between phillip island and mainland australian populations of the red fox vulpes vulpes. | predation by the red fox vulpes vulpes is believed to be threatening the little penguin eudyptula minor on phillip island in victoria. polymorphism at seven microsatellite loci was examined to estimate the extent of differentiation between phillip island and mainland populations of v. vulpes. loss of alleles has occurred on phillip island where foxes first appeared approximately 88 years ago compared with mainland populations. genetic differentiation between the phillip island and mainland popul ... | 1996 | 9147696 |
| [isolation and identification of lyssavirus strains from an area of slovakia where oral antirabies vaccine was administered]. | the study was aimed at isolation and subsequent identification of strains of rabies virus by means of monoclonal antibodies from foxes killed in the vaccination zone within the complex preliminary monitoring of oral antirabies vaccination. the results obtained indicate that the vaccines for oral antirabies vaccination used in slovakia did not contain any vaccination strain pathogenic to the extremely sensitive target species-the fox (vulpes vulpes). | 1997 | 9148571 |
| a noninvasive method for distinguishing among canid species: amplification and enzyme restriction of dna from dung. | endangered san joaquin kit foxes vulpes macrotis mutica can be sympatrically distributed with as many as four other canids: red fox, gray fox, coyote and domestic dog. canid scats are often found during routine fieldwork, but cannot be reliably identified to species. to detect and study the endangered kit fox, we developed mitochondrial dna markers that can be amplified from small amounts of dna extracted from scats. we amplified a 412-bp fragment of the mitochondrial cytochrome-b gene from scat ... | 1997 | 9161016 |
| ige response to fur animal allergens and domestic animal allergens in fur farmers and fur garment workers. | the aim of this study was to compare the ige response to the most commonly farmed fur animals with that to domestic animals. | 1997 | 9179423 |
| [effect of domestication of the silver fox on the main enzymes of serotonin metabolism and serotonin receptors]. | in silver foxes significant alterations in the activities of basic enzymes of neurotransmitter serotonin metabolism as well as in the densities of receptors caused by selection for the absence of the aggressive defensive reaction to man were demonstrated. in the midbrain and hypothalamus of animals selected for the absence of aggressive behavior, the activity of tryptophan hydroxylase, the key enzyme of serotonin biosynthesis, was found to be remarkably higher than in animals selected for highly ... | 1997 | 9244768 |
| validation of the feeding test as an index of fear in farmed blue (alopex lagopus) and silver foxes (vulpes vulpes). | the reliability and validity of the eating behaviour in the presence of man (feeding test) as an index of fear were assessed in farmed blue (alopex lagopus) and silver foxes (vulpes vulpes). repeatability of the feeding test was good in both species. no further habituation occurred after the fourth successive test in either species. in addition, the behaviour of both species was independent of the person who performed the test. the normal feeding interval, i.e., 24 h, between feed deliveries, wa ... | 1997 | 9284501 |
| chemotherapy with praziquantel has the potential to reduce the prevalence of echinococcus multilocularis in wild foxes (vulpes vulpes). | in order to evaluate the applicability of anthelminthic treatment of wild foxes (vulpes vulpes) to limit their infection with echinococcus multilocularis, bait pellets, each containing 50 mg praziquantel, were repeatedly distributed in an area of 566 km2 where many foxes are infected, in southern germany. after six baiting campaigns (15-20 baits/km2) over a period of 14 months, the prevalence of the cestode in foxes, initially 32%, had fallen to 4%. the effect was most pronounced in the central ... | 1997 | 9307660 |
| examination of red foxes (vulpes vulpes) from belgium for antibody to neospora caninum and toxoplasma gondii. | 1997 | 9330477 | |
| field evidence of secondary poisoning of foxes (vulpes vulpes) and buzzards (buteo buteo) by bromadiolone, a 4-year survey. | this paper presents the result of a 4 year survey in france (1991-1994) based on the activity of a wildlife disease surveillance network (sagir). the purpose of this study was to evaluate the detrimental effects of anticoagulant (ac) rodenticides in non-target wild animals. ac poisoning accounted for a very limited number of the identified causes of death (1-3%) in most species. predators (mainly foxes and buzzards) were potentially exposed to anticoagulant compounds (especially bromadiolone) vi ... | 1997 | 9353908 |
| oscillatory fast wave activity in the rat pyriform cortex: relations to olfaction and behavior. | bursts of rhythmical fast waves (> 1 mv, peak frequency approximately 16 hz; mean frequency approximately 20 hz) are elicited in the olfactory bulb and pyriform cortex in waking or urethane-anesthetized rats (1.25 g/kg, i.p.) by olfactory stimulation with organic solvents (xylene, toluene, methyl methacrylate, oil of turpentine) or components of anal gland secretions of rat predators (2-propylthietane, weasel; trimethyl thiazoline, red fox). these waves are specifically related to olfaction sinc ... | 1997 | 9359585 |
| [selection vector and ontogenetic development of behavior under domestication of wild norway rats]. | hereditary variation in rates of ontogenetic formation of exploratory behavior, glucocorticoid functions, and neurotransmitter systems in wild norway rats during selection for absence of defensive response towards humans (domestication) is demonstrated. interrelated shifts in the development of behavior and neurohormonal systems are shown. a comparison of the data obtained with the results of domestication of another species-silver fox-suggests that equally vectorized selection of animals belong ... | 1997 | 9378308 |
| regulation of reproductive tract immunoglobulins by oestradiol-17beta in the european red fox. | the effect of the ovarian hormone, oestradiol-17beta, on reproductive tract immunity in the female fox was investigated. reproductive tract antibody responses were induced by either peyer's patch immunization with a recombinant fox sperm protein, or by oral immunization with live, attenuated salmonella typhimurium. the effect of exogenous oestradiol-17beta or the stage of the oestrous cycle on reproductive tract immunity was assessed. the secretion of specific vaginal iga, but not vaginal igg, a ... | 1997 | 9418983 |
| [helminth fauna of the red fox (vulpes vulpes linne 1758) in south sachsen-anhalt--1: cestodes]. | between january 1993 and november 1994 a total of 1300 red foxes from the administrative districts halle and dessau were examined for the presence of echinococcus multilocularis and other cestodes. echinococcus multilocularis-infections were detected in only 4 of 1300 (0.3%) foxes. furthermore the following cestodes were found: mesocestoides spp. (54.1%), taenia crassiceps (17.7%), taenia polyacantha (11.9%), hydatigera taeniaeformis (0.2%), taenia serialis (0.15%), taenia pisiformis (0.15%), no ... | 1997 | 9445786 |
| [occurrence of echinococcus multilocularis leuckart, 1863, in foxes (vulpes vulpes) in the czech republic]. | during the period between december 1994 and december 1996 the authors examined, using the method of helminthological dissection of the intestinal tract in 15 districts of four regions in the czech republic a total of 824 foxes from 350 land registers. echinococcus multilocularis was found in the following regions: south bohemian (districts jindrichův hradec, ceský krumlov, prachatice and strakonice), central bohemian (benesov district) and north bohemian (district teplice and chomutov). there we ... | 1997 | 9471307 |
| [alveolar hydatidosis (alveococcosis) in the czech republic and its immunodiagnosis]. | the frequent contemporary infections with the tapeworm echinococcus multilocularis in foxes in some districts of the czech republic make it necessary to consider the probability of infection of man by the larval stage of this tapeworm in this country. so far there was in the czech republic a single case of alveolar hydatidosis (in 1977) in man with a lethal outcome. foxes vulpes vulpes increased in the czech republic considerably in numbers in recent years, and their infestations with e. multilo ... | 1997 | 9471308 |
| [helminth fauna of red foxes (vulpes vulpes linne 1758) in southern saxony--2: nematodes]. | between january 1993 and november 1994 a total of 1300 red foxes from the administrative districts halle and dessau were examined for the presence of nematodes in the stomach and the small intestine. the following nematodes were found: toxocara canis (26.5%), toxascaris leonina (10.5%), uncinaria stenocephala (15.9%) ancylostoma caninum (1.7%). the search for trichinella spp. larvae was negative in all 780 examined foxes. | 1997 | 9471417 |
| duration of immunity in foxes vaccinated orally with era vaccine in a bait. | red foxes (vulpes vulpes) vaccinated orally with the era strain of rabies vaccine in a bait were challenged after 83 mo. ten of 11 foxes that had seroconverted following vaccination resisted challenge with a virulent rabies virus which produced clinical signs of rabies in 6 of 6 unvaccinated foxes. five of 11 vaccinated animals retained titers of rabies virus neutralizing antibody throughout the period. although 6 of 11 had no detectable antibody at the time of challenge, 5 of these 6 resisted c ... | 1997 | 9008799 |
| effectiveness of sag1 oral vaccine for the long-term protection of red foxes (vulpes vulpes) against rabies. | three groups of 10 foxes were vaccinated by the direct oral instillation of 2 ml of sag1 rabies virus vaccine containing 10(6) micld50 (10(7) tcid50/ml) infectious viral particles/ml. sag1 is a natural variant of the attenuated rabies vaccine strain sad bern and was selected in the presence of monoclonal antibodies. the strain is devoid of residual pathogenicity for the fox and the highly susceptible adult laboratory mouse by the oral, intramuscular and intracerebral routes. the foxes were chall ... | 1997 | 9023904 |
| managing problem wildlife in the 'old world': a veterinary perspective. | this paper focuses on mammalian pest species mainly in europe and africa and on implications for animal health, human safety, wildlife management and animal welfare. three examples of problem species are presented: the wild boar (sus scrofa), the stray dog (canis familiaris) and the red fox, (vulpes vulpes). several species are reservoirs or vectors of transmissible diseases of man and of economically valuable domestic species. the control of these and other infections and the limitation of the ... | 1997 | 9109191 |
| a bait-delivered immunocontraceptive vaccine for the european red fox (vulpes vulpes) by the year 2002? | an orally-delivered immunocontraceptive vaccine is being developed for the control of fox populations. a number of genes (ph-20, ldh-c4, zp3) encoding gamete proteins have been cloned, produced in recombinant expression systems and used in fertility trials to test the efficacy of these antigens. as the immunocontraceptive vaccine will be delivered in a bait, there is a requirement for a greater understanding of the immune responses of the reproductive mucosa in canids, and the assessment of the ... | 1997 | 9109200 |
| pneumonyssoides caninum, the canine nasal mite, reported for the first time in a fox (vulpes vulpes). | this is the first report describing the finding of the canine nasal mite, pneumonyssoides caninum, in a silver fox (vulpes vulpes). it is also the first time p. caninum has been found in a species other than the dog (canis familiaris). a severely debilitated 10-month-old, male silver fox was euthanised due to suspected renal failure. during autopsy, a female mite matching the description of p. caninum was found in the nasal cavity of the fox. the finding of p. caninum in the fox suggests the exi ... | 1997 | 9477515 |
| [current status of animal rabies in france]. | the main host reservoir and vector of rabies in western europe is the red fox (vulpes vulpes). a vaccination strategy for this species has been developed and tested in switzerland since 1978. results indicate that the vaccine which is administered in spring and autumn for at least two consecutive years is more effective than destruction by shooting or gassing the animals. the same approach using bait containing increasingly effective and safe vaccines has been in use in france since 1986. by cre ... | 1997 | 9513178 |
| the red fox (vulpes vulpes) as reservoir of trichinella sp. in poland. | 1997 | 9557598 | |
| oral rabies vaccination of red foxes and golden jackals in israel: preliminary bait evaluation. | field trials were conducted in late april to early may of 1995 and 1996 in central israel to assess the potential for controlling rabies in red foxes (vulpes vulpes) and golden jackals (canis aureus) by using vaccine-laden baits. of the bait types which were field tested, polymer fish meal baits were selected as the most suitable for both species. fish meal baits containing tetracycline hydrochloride, an oral biomarker, were distributed by four-wheel-drive vehicle at a density of approximately 3 ... | 1997 | 9567312 |
| an indirect immunofluorescent test for detection of rabies virus antibodies in foxes. | the blood-containing fluids in the thoracic cavity or blood from the heart from 177 red foxes (vulpes vulpes) in slovenia were evaluated for rabies antibodies by rapid fluorescent focus inhibition test (rffit) and an adapted indirect immunofluorescent test (iif) in 1994. we evaluated the usefulness of anti-dog fluorescein-isothiocyanate (fitc) conjugate instead of anti-fox fitc conjugate in detection of antibodies against rabies virus in fox sera. in the rffit test, 92 (52%) of the fox samples w ... | 1997 | 9027703 |
| a non-epistatic interaction of agouti and extension in the fox, vulpes vulpes. | agouti and extension are two genes that control the production of yellow-red (phaeomelanin) and brown-black (eumelanin) pigments in the mammalian coat. extension encodes the melanocyte-stimulating hormone receptor (mc1r) while agouti encodes a peptide antagonist of the receptor. in the mouse, extension is epistatic to agouti, hence dominant mutants of the mc1r encoding constitutively active receptors are not inhibited by the agouti antagonist, and animals with dominant alleles of both loci remai ... | 1997 | 9054949 |
| helminths of foxes and other wild carnivores from rural areas in greece. | twenty species of helminth parasites were identified from fox, wolf, jackal and wild cat material collected in greece. of the 314 foxes (vulpes vulpes) examined, 18 helminth species were recovered comprising one trematode, eight cestodes, seven nematodes and two acanthocephalans, with the cestode species mesocestoides sp. (73.2%), joyeuxiella echinorhynchoides (24.5%) and the nematode species uncinaria stenocephala (43.9%), and toxara canis (28.6%) being the most prevalent. five cestode and thre ... | 1997 | 9705680 |
| effects of handling and physical restraint on rectal temperature, cortisol, glucose and leucocyte counts in the silver fox (vulpes vulpes). | the present paper describes the effects of handling and one hour of physical restraint on rectal temperature (trec), plasma cortisol, plasma glucose and leucocyte counts in six 8-months old silver fox vixens (vulpes vulpes). mean trec in silver foxes 5 min after capture was 40.1 degrees c and increased during restraint, showing a maximum of 40.8 degrees c at 30 min thereafter. supplementary, deep body temperature (tb) was recorded with surgically implanted biotelemetry devices in 6 adult silver ... | 1997 | 9129344 |
| can foxes be controlled by reducing their fertility? | a model based on data from research in new south wales conducted by the cooperative research centre for the biological control of vertebrate pest populations suggests that the effectiveness of fertility control in reducing the abundance of foxes (vulpes vulpes) can be strongly influenced by environmental variability. the model includes age-specific recruitment and survival as functions of resources indexed by rainfall. it is assumed that fertility control will affect only female foxes and that t ... | 1997 | 9109193 |
| [effect of long-term selection for behavior on progesterone level in blood and its level in adrenal glands of silver fox embryos]. | the level of progesterone in blood serum and its concentration in adrenals and gonads have been assayed in male and female silver fox embryos, starting from day 35 of pregnancy for every five days. pregnant females from an experimental population, selected for the domestic type of behavior and, as a control group, females from a commercial population, were used. at the end of prenatal development (days 45-50) the concentration of progesterone in adrenals was show to be significantly lower in emb ... | 1997 | 9493024 |
| [phenogenetic analysis of prenatal development of the glucocorticoid function of the adrenals in silver foxes after long-term selection for domesticated behavior]. | the level of cortisol in serum and adrenals and its production by adrenals in vitro was studied by the radioimmune method in male and female silver fox embryos, starting from day 30 of pregnancy every five days. pregnant females from a commercial population and an experimental population, which had been selected for domestic behavior, was used. it was shown that, at the end of the prenatal developmental stage, all investigated parameters of the glucocorticoid function of adrenals were significan ... | 1997 | 9480217 |
| [circadian rhythm of biosynthetic activity of the epiphysis in relatively wild and domesticated silver foxes]. | circadian dynamics of biosynthetic activity in pineal glands of adult relatively wild and domesticated silver fox females was studied beyond the reproductive season using radioimmune and fluorometric methods. the level of melatonin, the principal pineal hormone; activities of enzymes controlling its biosynthesis; the level of its precursor and one of its metabolites, as well as those of neurotransmitters involved in the regulation of biosynthesis exhibited more or less pronounced circadian chang ... | 1997 | 9378307 |
| cortisol production in fetal adrenals of the silver fox. | the present study was designed to examine cortisol production by the silver fox fetal adrenals and their response to acth at different periods of prenatal life. serum levels of cortisol were determined on days 35, 40, 45 and 50 of gestation (term on day 52) in embryos of both sexes. cortisol content in adrenal tissue homogenates and its in vitro adrenal production were also investigated at the same time points. hormones were measured by ria. the levels of cortisol changed slightly during embryon ... | 1997 | 16728039 |