| monoclonal antibody reveals radial glia in adult avian brain. | an antibody prepared against adult canary brain, 40e-c, stains ventricular zone cells that send long, unbranched processes into the forebrain parenchyma. we identify these cells as radial glia. the same antibody also stains a subset of brain astroglia and reacts with nonbrain material such as mesenchyme, sertoli cells, and the z-line of muscle. a weaker reaction is given by erythrocytes and some endothelial cells. 40e-c also reacts with the radial glia of the developing rat brain but fails to sh ... | 1987 | 2445794 |
| effect of testosterone on input received by an identified neuron type of the canary song system: a golgi/electron microscopy/degeneration study. | combinations of the golgi stain, anterograde degeneration, and electron microscopy are used to further characterize the hormone-sensitive "type iv" neuron of the forebrain nucleus robustus archistriatalis (ra) of adult female canaries. anterograde degeneration was used to "stain," at the electron-microscopic level, the axon terminals of neurons projecting to ra from hyperstriatum ventralis, pars caudalis (hvc) and from the lateral magnocellular nucleus of the anterior neostriatum (l-man). the hv ... | 1988 | 2461435 |
| morphology of golgi-impregnated neurons in hyperstriatum ventralis, pars caudalis in adult male and female canaries. | golgi-impregnated neurons in the song control nucleus hyperstriatum ventralis, pars caudalis (hvc) in male and female canaries (serinus canarius) have been divided into classes, primarily on the basis of interneuronal variability in spine density and dendritic branching pattern. at least four neuronal classes are found in hvc: aspinous neurons and three classes of spiny neurons. the "furry" dendrite (fd) cell class consists of neurons with long dendrites that are densely packed with spines. thei ... | 1989 | 2474004 |
| recognition of cyclic transmission of sarcocystis stehlinii n. sp. in the gran canarian giant lizard. | the transmission of sarcocystis species via cannibalism seems to be common among lizards of the genus gallotia that are endemic to the canary islands. gran canarian giant lizards, gallotia stehlini, were screened for the presence of sarcosporidian parasites. sarcocysts, measuring 90-400 micrometers in length and 60-160 micrometers in width, were found in the musculature of the lizards' tails. in their feces the lizards passed sporocysts of 8.5(8.2-9.4) x 6.5(5.9-7.0) micrometers. a series of lab ... | 1989 | 2498493 |
| masking of circadian activity rhythms in canaries by light and dark. | canaries (serinus canaria) were kept singly in cages placed in an artificially illuminated, soundproof cabinet. perch-hopping activity was recorded by means of a computer system. in three series of experiments, the activity rhythms of the birds were entrained to 24 hr by light-dark (ld) cycles with 4, 12, or 20 hr of light (l), respectively. the intensity of illumination was 10 lux in l and 0.25 lux in darkness (d). under ld 4:20 and 12:12, the intensity of d was increased daily at the same zeit ... | 1989 | 2519578 |
| paediatric drug prescribing. a comparison of tenerife (canary islands, spain) and sweden. | the prescribing of medicines for ambulant children below 14 years of age has been compared between tenerife (spain) and sweden. data obtained from a random sample of 1327 children in a prospective study in tenerife were compared with data from 3901 children in a swedish survey linking diagnosis and therapy. upper respiratory tract infection was the main diagnosis in both countries and antibiotics was the most frequently prescribed drug group (28.2% in tenerife and 28.8% in sweden). half of the c ... | 1989 | 2591465 |
| human enzyme polymorphism in the canary islands. iii. tenerife island population. | we analyzed the genetic polymorphism of eight red cell enzymes in samples from different geographical areas of tenerife and the iberian peninsula. the gene frequency heterogeneity found within the tenerife samples was at the same level as that of tenerife-mainland comparisons. the presence of the negroid g6pd a+ allele in the tenerife samples is evidence of an african admixture with a mean estimation of 4.5%. | 1989 | 2591912 |
| management of infections in immunocompromised patients. based on a symposium. tenerife, canary islands, spain, 17-18 february 1989. | | 1989 | 2612533 |
| recent advances in steroid biochemistry. proceedings of the ninth international symposium of the journal of steroid biochemistry. las palmas, canary islands, spain, 28-31 may 1989. | | 1989 | 2626011 |
| from bird song to neurogenesis. | one of the dogmas of neurobiology has it that when nerve cells in the vertebrate brain die, they are not replaced by new ones. the author finds to the contrary. he has shown that when the adult canary needs to learn new songs, it does grow some new neurons. the finding could eventually lead to the discovery of ways to repair lesions in the human brain. | 1989 | 2643827 |
| the carabelli trait in human prehistoric populations of the canary islands. | the incidence of the different degrees of expression of carabelli's trait in the deciduous and permanent dentitions was obtained on 651 skulls of three human prehistoric aboriginal samples from gran canaria (n = 329), tenerife (n = 297) and la gomera (n = 25) islands. in the gran canaria sample, the total trait frequency for the permanent first molar was slightly greater in males, who also showed a higher degree of expression than females. however, in this sample, as well as in the tenerife samp ... | 1989 | 2651278 |
| in situ assessment of genotoxic hazards of environmental pollution. | the potential impact of the environmental pollutants on human health can be evaluated by the laboratory analysis of the environmental samples or by the measurement of the biological effects on indigenous populations and/or specific test organisms placed in the environment to be monitored. a canary in a cage, used by 19th century miners as a biological indicator for rising levels of toxic gases, is a classical example of in situ hazard identification. the induced toxic effects are often the resul ... | 1989 | 2655178 |
| third molar agenesis in human prehistoric populations of the canary islands. | the occurrence of third molar agenesis was recorded in a sample of 1,492 maxillary and 1,718 mandibular arches belonging to the prehistoric settlers of the gan canaria, tenerife, and la gomera islands (canary islands). there were significant sex differences only in the tenerife sample for the maxilla, the incidence in females being higher than in males. in the gran canaria sample, the total frequency (male and female combined) of third molar agenesis (individual count method) was 8.7% for the ma ... | 1989 | 2662782 |
| [several linguistic observations on the mongol anthropological problem]. | the origin and migratory ways of mongols during the neolithic period are hitherto unsettled. this paper remembers any facts of comparative linguistics which demonstrate remnants of a protomongolian substratum in olden and living languages of central asia, the near orient, europe, and the canary islands. | 1989 | 2691321 |
| accumulation of estrogen in a vocal control brain region of a duetting song bird. | tritiated estradiol (e) was injected into bay wrens (thryothorus nigricapillus), a tropical species in which females sing complex vocal duets with males. autoradiographic analysis revealed that males and females have equal proportions of cells labeled by estradiol or its metabolites (e target cells) in a telencephalic region involved in song: the caudal nucleus of the ventral hyperstriatum (hvc). other forebrain song regions failed to show labeling by e. e or its metabolites were accumulated, ho ... | 1989 | 2713646 |
| new contribution to the ethnopharmacological study of the canary islands. | we present in this paper a report of 155 species used for medicinal purpose in the canary islands. these species have been compiled in 13 tables in accordance with their main medicinal use, indicating also other possible popular uses. we have made a short inventory of the rates of the most important medicinal applications. this new compilation shows once more the traditional use of the phytotherapeutic resources by the canary population and also the wide possibilities of the phytochemical and ph ... | 1989 | 2716345 |
| synaptic plasticity in the hypoglossal nucleus of female canaries: structural correlates of season, hemisphere, and testosterone treatment. | the caudal portion of the hypoglossal nucleus (nxiits) contains the motor neurons that control the syrinx in songbirds. in canaries, song occurs seasonally, is principally produced by males, and appears to be produced predominantly by muscles on the left side of the syrinx. the present study measures the effect of seasonal change and manipulation of testosterone levels on synapse number and morphology in nxiits in adult female canaries. we find that synapse density is lower in testosterone-treat ... | 1989 | 2757585 |
| the incidence of the adult respiratory distress syndrome. | although adult respiratory distress syndrome (ards) has been a recognized entity for over 20 years, estimates of its incidence have been very controversial. the most quoted figure is from a 1972 national heart and lung institute task force, which estimated 150,000 cases/year in the united states, an incidence of about 75 cases/100,000 population. no experimental study, however, has adequately addressed this issue. we were in a unique position to answer this controversy because the hospital of on ... | 1989 | 2789490 |
| the relation between resource limitations and optional conceptual processing by children and adults. | in some situations children fail to perform optional conceptual processing that they are able to perform. the purpose of the 4 experiments was to determine if the difficulty of word identification affects optional conceptual processing by second/third graders, fifth graders, and college students in a cued recall task. conceptual processing was manipulated by presenting hard (e.g., hawk eagle canary) or easy (river lake canary) word triplets that varied in the contrastive processing necessary to ... | 1989 | 2805897 |
| [effect of roasted wheat flour on the intestinal absorption and zinc metabolism of rats]. | 24 experiences have been carried in 8 younger wistar female rats that been submitted to three different diets considering fibers and phytates, with the purpose to demonstrate if "gofio de trigo" of popular consumption in canary islands, and rich in these substances affects intestinal absorption of zinc in the diet. authors have observed a very significant elevation of zinc in feces, during the control period. an important decrease of zinc in hair has been observed indicating a deficit of corpora ... | 1988 | 2837116 |
| avocado (persea americana) intoxication in caged birds. | avocados of 2 varieties were mashed and administered via feeding cannula to 8 canaries and 8 budgerigars. two control budgerigars were given water via feeding cannula. six budgerigars and 1 canary died within 24 to 47 hours after the first administration of avocado. deaths were associated with administration of both varieties of avocado. higher dose was associated with greater mortality. the 2 budgerigars given water were normal throughout the observation period. results indicated that avocados ... | 1989 | 2914792 |
| prevalence of multiple sclerosis in lanzarote (canary islands) | in the island of lanzarote of the province of las palmas, which is part of the spanish archipelago of the canary islands, the prevalence of multiple sclerosis is 15 per 100,000. the prevalence of ms in lanzarote seems related more to ethnic conditions than to geography. | 1989 | 2915799 |
| isolation of free-living amoebas from the intestinal contents of reptiles. | a total of 508 reptiles captured at canary islands (spain) was examined for free-living amoebas. two hundred seventy-three clones of amoebas were isolated by culture of gut contents, 157 of them belonging to the genus acanthamoeba and 12 to the genus naegleria. | 1989 | 2926597 |
| the distribution and plasticity of [3h]vasopressin-labelled specific binding sites in the canary brain. | [3h]vasopressin was used to detect and to quantitate specific binding sites with in vitro receptor autoradiography in the canary brain. a discrete regional distribution of [3h]vasopressin-labelled binding sites was observed. a high density of specific binding sites was present in the medial posterior hypothalamic nucleus, the superficial layer of the optic tectum, the area ventralis of tsai (avt), the nucleus pretectalis, the habenula, the nucleus of darkschewitch and the nucleus interstitialis. ... | 1988 | 2971421 |
| morphogenesis of canary poxvirus and its entrance into inclusion bodies. | a virus isolated from a natural outbreak of canarypox was replicated on the chorioallantoic membranes of chicken embryos, and its ultrastructure and development were observed. electron microscopy of thin sections of pocks produced on the chorioallantoic membranes revealed a variety of developmental forms which appear similar to those demonstrated in studies of vaccinia, ie, viroplasm or viral factories; immature, undifferentiated virions partially enclosed by membranes; completely enclosed nondi ... | 1985 | 2986493 |
| [susceptibility of birds other than chickens to infectious laryngotracheitis]. | susceptibility to infectious laryngotracheitis virus was studied in peafowl (pavo cristatus), various species of pheasant (phasianus colchicus, lophura swinhoeii, lophophorus impejanus), guinea-fowl (numida meleagris), canaries (serinus canaria), budgerigars (melopsittacus undulatus) and japanese quail (coturnix coturnic japonica). apart from clinical observations, experiments were evaluated in terms of histopathology, immunofluorescence, serology and recovery of virus. only peafowl and pheasant ... | 1985 | 2990066 |
| silica in higher plants. | opaline silica deposits are formed by many vascular (higher) plants. the capacity of these plants for silica absorption varies considerably according to genotype and environment. plant communities exchange silica between soil and vegetation, especially in warmer climates. silica deposition in epidermal cell walls offers mechanical and protective advantages. biogenic silica particles from plants are also implicated in the causation of cancer. recent techniques are reviewed which may aid in the id ... | 1986 | 3017649 |
| canary pox causing high mortality in an aviary. | in an aviary housing 200 six-month-old canaries, 165 became ill and 145 died over a 6-week period from a disease initially characterized by lethargy, ruffled feathers, open-mouth breathing, and death in 2 to 3 days. proliferative "pox-like" lesions around the eyes and mouth were not seen until the 4th week. at necropsy, initially affected birds had cloudy air sacs and patchy pneumonia. histologically, the lungs had proliferative necrotizing bronchitis. birds necropsied later had proliferative sk ... | 1986 | 3025141 |
| synaptic connections of thalamo-cerebral vocal nuclei of the canary. | the canary vocal nuclei include two systems: hyperstriatum ventrale, pars caudale (hvc), nucleus robustus archistriatalis (ra) and nucleus hypoglossus, pars tracheosyringealis (nxiits) compose a motor driving system for vocalization. the other group of nuclei including hvc, nucleus x of the lobus parolfactorius (area x), nucleus dorsointermedius posterior thalami (dip) and nucleus magnocellularis of anterior neostriatum (man) is a modulator of the driving system. the hvc neurons receive mono- or ... | 1987 | 3030511 |
| waldenström's macroglobulinaemia in a bird breeder: a case history with pulmonary involvement and antibody activity of the monoclonal igm to canary's droppings. | a canary breeder with waldenström's macroglobulinemia developed a pulmonary disease related to an interstitial infiltration by malignant b cells secreting a monoclonal igm k. the serum monoclonal igm was shown to possess an antibody activity to some canary's droppings antigen. this finding may help elucidate the natural course of lymphoid malignancies and the pathogenesis of rare visceral localizations. | 1987 | 3115646 |
| hematozoan parasites of rio grande wild turkeys from southern texas. | one hundred twenty-three of 300 blood samples (41%) taken from rio grande wild turkeys (meleagris gallopavo intermedia) from three locations in southern texas (welder wildlife refuge, chaparrosa ranch, and campo alegre ranch) and subinoculated into domestic broad-breasted white turkey poults were positive for a plasmodium (novyella) sp. analysis of blood films from 350 turkeys revealed haemoproteus meleagridis in 76% of the birds. a significantly greater mean parasite intensity was observed in b ... | 1988 | 3127605 |
| the propagation of avian viruses in a continuous cell line (qt35) of japanese quail origin. | seven of nine avian virus families tested (birnaviridae, coronaviridae, herpesviridae, paramyxoviridae, poxviridae, reoviridae, and retroviridae) were found to replicate in a quail fibroblast cell line, designated qt35, resulting in a cytopathic effect (cpe) visible with the naked eye or by low-power microscopy. in comparison, only one (paramyxoviridae) of seven mammalian virus families tested produced an observable cpe. cytopathic changes induced by examined viruses were round cell, syncytial, ... | 1988 | 3135794 |
| birth of projection neurons in the higher vocal center of the canary forebrain before, during, and after song learning. | the higher vocal center (hvc) of the canary brain projects to two forebrain nuclei: robustus archistriatalis (ra) and area x of lobus parolfactorius. the time of birth of hvc neurons projecting to these two regions was determined by combining [3h]thymidine autoradiography and retrograde fluorogold uptake. birds were sacrificed at 13 months of age, 4 days after fluorogold injections into area x or ra. a single injection of [3h]thymidine in ovo (embryonic day 9) labeled 76% of area x-projecting ce ... | 1988 | 3186755 |
| bird-egg syndrome. cross-reactivity between bird antigens and egg-yolk livetins in ige-mediated hypersensitivity. | 87 adult patients from our allergy clinic were skin tested with budgerigar and canary feathers, hen's egg white and egg yolk and common inhalant allergens. of 59 patients found to be atopic, 17 (29%) were concomitantly sensitized to bird dander and egg proteins, 10 of them being symptomatic to bird dander and/or egg exposure. all but 1 of the egg-symptomatic patients were exposed to pet birds. the patients with strong serological reactivity to bird antigens were also exclusively sensitized to eg ... | 1988 | 3192303 |
| growth rate, muscle protein composition, intestinal absorption of d-galactose and l-leucine and nitrogen balance in rats fed the raw legume chamaecytisus proliferus l. | growth rate, nitrogen balance, skeletal muscle nitrogen fractions and in vivo intestinal absorption of d-galactose (2 mm) and l-leucine (20 mm) have been measured in male growing rats (90-100 g initial body weight) fed 12% protein diets containing either casein (control) or the raw leafy legume chamaecytisus proliferus l. (western canary islands). as compared to control casein-fed rats, those fed the raw legume diet exhibited a significant reduction (p less than 0.01) in the rate of growth, nitr ... | 1988 | 3200799 |
| drug utilization by children in tenerife island. | drug utilization was studied in children below 14 years of age in tenerife, canary islands, who were seen as outpatients by 15 paediatricians and 10 general practitioners. data on diagnosis, previous drug exposure and prescriptions were collected from a random sample of 1327 children. nose and throat infections (40.1%), respiratory diseases (10.2%) and miscellaneous symptoms, namely common cold, influenza or nasal congestion (10.5%), were the most frequent reasons for visiting a physician. antib ... | 1988 | 3203710 |
| [accidental hypothermia in the canary islands: description of 2 cases with fatal outcome]. | | 1988 | 3210828 |
| joint hormonal and sensory stimulation modulate neuronal number in adult canary brains. | treatment of adult female canaries with testosterone (t) causes them to produce male-typical vocalizations and results in striking growth of brain nuclei that control song behavior (nottebohm, 1980). the song-control nucleus hvc (caudal nucleus of the ventral hyperstriatum) contains cells that concentrate testosterone or its metabolites, suggesting that steroid hormones may induce the growth of hvc directly by regulating the expression of specific genes in those hvc neurons that have steroid rec ... | 1988 | 3225559 |
| overview and evaluation of the hearing imparied child. imaging and audiology. iv international symposium on audiological medicine. puerto de la cruz, tenerife, canary islands, spain, 8-13 november 1987. proceedings. | | 1988 | 3227250 |
| biotechnological applications of lipid microstructures. based on the proceedings of the workshop on technological applications of phospholipid bilayers, vesicles, and thin films, january 5-9, 1986, tenerife, canary islands; and the workshop on biotechnological applications of membrane studies, october 18-22, 1987, san sebastian, spain. | | 1988 | 3250236 |
| probes for rare mrnas reveal distributed cell subsets in canary brain. | cdna clones of 7 low-abundance canary brain rnas hybridize in situ to different subsets of brain cells. although these cell sets are distinct, they are dispersed in a variety of brain regions with overlapping anatomical distributions. these cdna clones were initially selected by their relative hybridization to forebrain and rest-of-brain rnas and represent a sampling of a much larger population of differentially expressed rnas present at individual concentrations of 10(-7) to 10(-4) as a fractio ... | 1988 | 3272171 |
| [isolation of free-living amoebae, potentially pathogenic for humans, from 3 species of saurians from the western canary islands]. | | 1988 | 3273997 |
| quantitative analysis of the molar-size sequence in human prehistoric populations of the canary isles. | percentage frequencies for molar-size sequence of first and second molars, as well as the statistical parameters for the individual differences between the measurements of these molars, were calculated in two human prehistoric aboriginal samples from gran canaria and tenerife islands using mesiodistal and buccolingual dimensions. remarkable differences between the two populations, whose cultural and anthropological differences are well established, were observed. the findings support the hypothe ... | 1987 | 3310977 |
| norfloxacin versus placebo for prophylaxis against travellers' diarrhoea. | in a randomized, double blind study, 127 subjects travelling to countries outside northern europe were given norfloxacin 200 mg or placebo bid as prophylaxis against diarrhoea. fifty-six subjects randomized to norfloxacin and 59 to placebo fulfilled criteria for evaluation of efficacy and of those, respectively six and 20 (p = 0.0006) developed diarrhoea. the mean duration of symptoms in the placebo group was 3.6 days, while all subjects on norfloxacin had symptoms for one day only. in traveller ... | 1987 | 3316152 |
| testosterone-sensitive vasotocin-immunoreactive cells and fibers in the canary brain. | a sexual difference in vasotocin (vt) immunoreactivity was observed in the canary brain. the male canary displays denser vt innervation of the lateral septum and more vt-immunoreactive cells are visible in the dorsal diencephalon than in the female canary. this sex difference is the consequence of gonadal influences. castration of male canaries resulted in a substantial decrease of vt immunoreactivity in these septal and diencephalic cells and fibers. testosterone administration to castrated mal ... | 1988 | 3359249 |
| canary grass (phalaris sp) toxicosis in sheep in california. | | 1988 | 3372321 |
| human enzyme polymorphism in the canary islands. ii. african influence. | the genetic polymorphism of eight red cell enzymes was examined in three samples from gran canaria and one from equatorial guinea. the presence of african genes in the gran canaria population showed an african admixture estimated to 6-9%. the genetic distance between gran canaria and equatorial guinea was 0.033, and that between gran canaria and the spanish mainland only 0.007. | 1988 | 3378795 |
| hb las palmas or alpha 2 beta 2(49)(cd8)ser----phe, a mildly unstable hemoglobin variant. | a new hemoglobin variant with a ser----phe substitution at position beta 49(cd8) was discovered in two members of a family living in the canary islands, spain. detection was by polyacrylamide gel electrophoresis and by reversed phase high performance liquid chromatography. the variant, which constituted 43% and 45%, respectively, in the two heterozygotes, was slightly unstable. its presence did not affect hematological values though there was a mild reticulocytosis. | 1988 | 3384708 |
| commercial blast-freezing of third-stage anisakis simplex larvae encapsulated in salmon and rockfish. | sixty-four fish were blast-frozen to -35 c for 15 hr to determine the effects of commercial blast-freezing on the viability of third-stage larvae of anisakis simplex encapsulated in the muscle and viscera of sockeye salmon (oncorhynchus nerka) and canary rockfish (sebastes pinniger). parallel tests were conducted on larval nematodes in 16 whole (round) salmon, 16 dressed salmon (heads and viscera removed), and 32 whole (round) rockfish. after blast-freezing, 4 in-the-round salmon, 4 dressed salm ... | 1988 | 3397820 |
| [some remarks on the ural-altaic substrate in old canary and etruscan languages as a contribution to linguistic neolithic anthropology in eurasia and north africa]. | the suffixes of the nominal declension in the old canary and etruscan languages are very similar to the corresponding elements of the sumerian and ural-altaic tongues. also many words of funeral and generally cultic provenance are derived from common roots in these languages. so one may assume that the indoeuropean tongues of (west) europe overlaid a common substratum of ural-altaic type which was alive still in the time of megalithicum. | 1988 | 3402708 |
| mapping of radial glia and of a new cell type in adult canary brain. | frontal and coronal sections of adult male and female canary brain were stained with a monoclonal antibody to vimentin using an immunoperoxidase technique; some sections were counterstained with cresyl violet. the position of radial glia cells was mapped using a computer-linked microscope. the telencephalon was found to have a rich set of radial glia. the long processes of these radial glia showed a mediolateral orientation, and were much more abundant in some parts of the telencephalon (e.g., h ... | 1988 | 3411349 |
| differential response to environmental alcohol among second-chromosome arrangements in experimental populations of drosophila buzzatii. | drosophila buzzatii feeds and breeds on the decaying cladodes and fruits of several species of opuntia (prickly pear) which contain significant levels of ethanol and isopropanol. the potential influence of these two alcohols on the inversion polymorphism of the second and fourth chromosomes was investigated in ten experimental populations with different amounts of alcohol (either ethanol or isopropanol) added to the culture medium. all populations were started with the offspring of 29 wild femal ... | 1987 | 3505227 |
| contribution to the ethnopharmacological study of the canary islands. | a large amount of ethnobotanical data of almost 200 botanical species used for medicinal purposes in the canary islands is presented. we are endeavouring to avoid the definitive loss of the islands' phytotherapeutic heritage, in view of the rapid social changes taking place over the last few years and hope that this work may serve to promote further pharmacological research that may confirm, scientifically and experimentally, the information presented here. a brief description of the geographica ... | 1986 | 3520156 |
| [a thalamo-cerebral connection in vocal center of canary]. | canary song is controlled by two groups of thalamo-cerebral nuclei. one, the hyperstriatum ventrale pars caudale (hvc) and the robust nucleus of the archistriatum (ra), is a motor driving system for vocalization. the other group, which includes the hvc, the nucleus magnocellularis of neostriatum (man), area x and the nucleus dorsointermedius posterior thalami (dip), modulates the driving system. the hvc receives synaptic projections from the man and sends fibers to area x. axons of area x monosy ... | 1986 | 3560002 |
| [health for all. an experience in the canary islands in health education as an instrument for community participation]. | | 1986 | 3563390 |
| hearing in passerine and psittacine birds: a comparative study of absolute and masked auditory thresholds. | operant conditioning and a psychophysical tracking procedure were used to measure auditory thresholds for pure tones in quiet and in noise for seven species of small birds--the budgerigar, canary, cockatiel, european starling, song sparrow, swamp sparrow, and the zebra finch. audibility curves are roughly similar among the seven birds, with the maximum sensitivity between 2 and 5 khz and poorer sensitivity outside this narrow region. critical ratios (signal-to-noise ratio at masked threshold) we ... | 1987 | 3568610 |
| health problems after travel to developing countries. | travelers to developing countries participated in a follow-up study of the health risks associated with short (less than three months) visits to these nations. travelers to the greek or canary islands served as a control cohort. participants completed a questionnaire to elicit information regarding pretravel vaccinations, malaria prophylaxis, and health problems during and after their journey. relevant infections were confirmed by the respondent's personal physician. the questionnaire was comple ... | 1987 | 3598228 |
| strain differences in auditory thresholds in the canary (serinus canarius). | canaries (serinus canarius) of the belgian waterslager strain from two different colonies were trained with operant techniques for audiometric testing. for both young and old birds, absolute thresholds in the middle- to high-frequency region of the audiogram were between 30 and 40 db (spl) higher than those of other song birds, including canaries of other strains. thus the belgian waterslager canary, selectively bred for loud, low-pitched song, has also developed poor high-frequency hearing. | 1987 | 3608427 |
| effects of plasmodium relictum on the metabolic rate and body temperature in canaries (serinus canarius). | | 1987 | 3625437 |
| the borderline patient: systemic versus psychoanalytic approach. part ii: the case of the compassionate canary: the systemic perspective. | | 1987 | 3649211 |
| the "wellness canary" exercise. | | 1987 | 3650180 |
| organization of vasotocin-immunoreactive cells and fibers in the canary brain. | the distribution of vasotocin (vt)-immunoreactive neuronal perikarya and fibers in the canary (serinus canaria) was investigated with immunohistological techniques. the results suggest that most vt-stained cell bodies are located in three diencephalic regions. first, a large number of densely packed neurons are found in the paraventricular nucleus (pvn) and the anterior preoptic nucleus. neurons here vary widely in size and shape. small-size rounded neurons and large-size multipolar neurons appe ... | 1987 | 3667983 |
| an outbreak of encephalitis in pigeons (columba livia) in the canary islands (spain). | an encephalitic disease in pigeons, characterized by paralysis of extremities, torticollis, head tremor, and diarrhea, is described. the negative titers in the hemagglutination tests, the presence of feulgen-positive intranuclear inclusions in the cells of the granular layer of the cerebellum and the fibroblast culture, and the presence of viral particles with an icosahedral-herpetic morphology and a diameter of 100-170 nm all indicate that the etiology of this outbreak may be related to the enc ... | 1986 | 3729888 |
| mucormycosis in canaries (serinus canarius) fed damp germinated seed. | | 1986 | 3776018 |
| [mediterranean boutonneuse fever in the canary islands]. | | 1986 | 3784671 |
| developmental and seasonal changes in canary song and their relation to changes in the anatomy of song-control nuclei. | young male canaries become sexually mature in late winter, 8-12 months after hatching. during the months between hatching and sexual maturity they develop adult song. the successive stages in the development of adult song are subsong, plastic song, and stable or full song. once stable song is achieved it lasts for the duration of the breeding season. after the end of the breeding season there is a recurrence of song instability during summer and early fall. this plastic song is followed, once mo ... | 1986 | 3814048 |
| [epidemiological approximation on the study of goiter in the eastern canary islands (grand canary, fuerteventura and lanzarote)]. | | 1986 | 3823782 |
| [nursing in the communication media. staff of the radio program countdown. the spanish radio network. the autonomous community of the canary islands]. | | 1985 | 3852411 |
| [early oviposition in serinus canaria after endonasal administration of gn-rh. (preliminary research)]. | | 1985 | 3899139 |
| human enzyme polymorphism on the canary islands. i. gran canaria island population. | genetic polymorphism of seven red cell enzymes was examined in two canary island populations and in an iberian peninsula sample. the more isolated insular population shows a considerable gene frequency heterogeneity when compared with the peninsular sample but both are within the range of european populations. the presence of certain rare alleles normally associated with blacks suggests an african component in the canarian populations. | 1986 | 3949359 |
| [first original case of hydatidosis in the canary islands]. | | 1985 | 3999838 |
| lens fiber organization in four avian species: a scanning electron microscopic study. | the three-dimensional organization of the eye lenses of the chicken, the canary, the song-thrush and the kestrel was studied using light and scanning electron microscopy. the lenses of birds are characterized by the presence of two distinct compartments: the annular pad and the main lens body, separated by a cavum lenticuli. the annular pad fibers had a hexagonal circumference all contained a round nucleus and except for the canary were smooth-surfaced and lacking anchoring devices. in the canar ... | 1985 | 4012767 |
| ultrastructural characterization of synaptic terminals formed on newly generated neurons in a song control nucleus of the adult canary forebrain. | the fine structure of synaptic terminals contacting neurons generated in the forebrain of adult male canaries was investigated by autoradiography and electron microscopy. the procedure for labeling the new neurons included pretreating adult canaries with 3h-thymidine and sacrificing them 23-45 days later. neurons were identified as newly generated by the presence of 3h-thymidine in the cell nucleus. the new neurons in the nucleus hyperstriatum ventralis, pars caudalis (hvc) were identified by au ... | 1985 | 4056107 |
| colony differences in auditory thresholds in the canary (serinus canarius). | adult canaries (serinus canarius) from a closebred colony of the belgian "waterslager" strain were trained with operant techniques to respond to pure tones. a psychophysical tracking procedure was used to measure absolute auditory thresholds in quiet and in noise. absolute thresholds in the middle- to high-frequency region of the audiogram were between 30 and 40 db higher (4-5 standard deviations) than those typically reported for other song birds including canaries of other strains and watersla ... | 1985 | 4056211 |
| perception of species-specific contact calls by budgerigars (melopsittacus undulatus). | three budgerigars were trained with operant techniques to discriminate examples of species-specific contact calls. budgerigars were also tested on vocalizations from another avian species--the canary (serinus canarius). budgerigars showed an equivalent ability to discriminate and remember both budgerigar and canary calls. additional tests showed that both temporal and spectral cues were important in the discrimination of species-specific calls by the budgerigar. however, spectral cues occurring ... | 1985 | 4075778 |
| notes upon some turtles from the canary islands and from madeira. | | 1968 | 4231151 |
| [alpist. l. canary-grass seed (phalaris canariensis l.). an exceptional source of tryptophan]. | | 1969 | 4243781 |
| [on the behavior of filaments of the canary poxvirus and of the capsomeres of varicella-zoster virus toward solvents and enzymes]. | | 1964 | 4284125 |
| [therapy and prohylaxis of the canary-pox]. | | 1969 | 4319959 |
| [pathology of the pulmonary form of canary pox]. | | 1972 | 4344761 |
| canary pox in sparrows and canaries (fringillidae and in weavers (ploceidae). pathology and host specificity of the virus. | | 1971 | 4367731 |
| [comparative studies on parenteral and nonparenteral immunization against canary pox]. | | 1974 | 4369515 |
| effect of photoperiod on oestrogen-induced nest-building in ovariectomized or refractory female canaries (serinus canarius). | | 1974 | 4430996 |
| changes in plasma lh levels during a photoperiodically controlled reproductive cycle in the canary (serinus canarius). | | 1974 | 4452473 |
| food preferences of wild house-mice (mus musclus l). | the relative acceptance of various plain foods by wild house-mice (mus musculus l.) was compared in laboratory choice tests. the palatability of glycerine and six oils, each included at 5% in pinhead oatmeal, was compared in a similar manner.the most favoured food was found to be whole canary seed (phalaris canariensis). pinhead oatmeal and wheat were also comparatively well accepted. glycerine, corn oil, arachis oil and mineral oil were more palatable than either olive, linseed or cod-liver oil ... | 1974 | 4531454 |
| field trials of calciferol combined with warfarin against wild house-mice (mus musclus l.). | a combination of calciferol (vitamin d(2)) and warfarin, each at 0.025% in medium oatmeal bait, failed to control six of seven house-mouse (mus musculus l.) populations infesting urban and farm buildings. in three further treatments with both calciferol and warfarin at 0.05% in dehusked canary seed bait plus 5% corn oil, mortality, estimated from the consumption of pre- and post-treatment census bait, ranged between 94.2 and 97.4%. finally, among sixteen treatments done with calciferol at 0.1% a ... | 1974 | 4548430 |
| the telencephalon, diencephalon, and mesencephalon of the canary, serinus canaria, in stereotaxic coordinates. | | 1974 | 4609173 |
| [tumor-forming pigeon and canary smallpox]. | | 1973 | 4722360 |
| the influence of photoperiod on nest building, ovarian development and luteinizing hormone secretion in canaries (serinus canarius). | | 1973 | 4748517 |
| [endogamy and anthropological differentiation in the canary islands. (anthropological studies in the canary islands 3)]. | | 1973 | 4789837 |
| blood groups (rh, abo) in the population of gran canaria (canary islands, spain). | | 1969 | 4978995 |
| auditory sensitivity and song spectrum of the common canary (serinus canarius). | | 1971 | 5096506 |
| effects of radiothyroidectomy by 131i on the self-selected circadian rhythm of rest and activity in the canary. | | 1969 | 5212569 |
| the effects of ethanol on the self-selected circadian rhythm of activity and rest in the canary. | | 1970 | 5314445 |
| drug effects on canary steriotypies. | | 1969 | 5359323 |
| respiration during song in the canary (serinus canaria). | | 1970 | 5417456 |
| is the canary dying? the time has come for man, miner of the world's resources, to surface. | | 1970 | 5485229 |
| the blue canary. | | 1970 | 5500628 |
| erythrophagocytosis in the bone marrow of canary infected with malaria. electron microscope observations. | | 1971 | 5544827 |
| psittacosis in manitoba. | paired blood specimens submitted to the virus laboratory, between january and september 1970, from 200 patients with a lower respiratory tract infection were examined for antibodies to the psittacosis-human pneumonitis group antigen. a high static titre of antibodies was found in four patients and a rising titre in three. the illness varied in the seven patients, tending to be severe, chronic and recurrent. all patients recovered following a course of antibiotic therapy which was repeated in fou ... | 1971 | 5574057 |