Publications

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the relative effectiveness of an inanimate stimulus and a live surrogate during imprinting in japanese quail, coturnix coturnix japonica. 1976964445
genetic analysis of tonic immobility in young japanese quail (coturnix coturnix japonica). 1976964440
induction of parental behavior in japanese quail (coturnix coturnix japonica).the japanese quail is a precocial species, and because of its relatively rapid development, sexual maturation in about 40 days after hatching, and prolific breeding capacity, it promises to become an organism well suited for avian research. one stumbling block has been the inability to induce, with any consistency, parental behavior in laboratory stocks. the study reported herein demonstrates a method for establishing a self-perpetuating population under seminaturalistic conditions. in addition, ...1976945304
incorporation of tritiated uridine during pachytene and diplotene stages in the oocytes of the japanese quail (coturnix coturnix japonica).incorporation of 3h-uridine was studied during pachytene and diplotene stages of quail oocytes. no labelling could be detected during early pachytene. during advanced and late pachytene, labelling simultaneously appeared on the macrochromosomes and on certain michromosomes in the zone where they emerge from the chromocentric surface periphery. the latter localization corresponds to the region of ribosomal rna synthesis. at diplotene the same localizations were labelled with a considerably increa ...1976942928
produced by selective breeding of japanese quail animal model for experimental atherosclerosis.the japanese quail (coturnix coturnix japonica) was bred selectively to produce a strain highly susceptible to experimental atherosclerosis. a population was produced where aortic atherosclerosis is contracted by 99% of the fourth generation males and 83% of the femlaes. forty-three percent of the males exhibited severe atherosclerosis making this line of japanese quail a suitable model for discovering and testing anti-atherosclerosis compounds. this feature is augmented by other features such a ...19761274793
behavioural responses to sex steroids of gonadectomized and sexually regressed quail.the purpose of these experiments was to compare the behavioural and morphological effects of exogenous sex hormones in gonadectomized quail (coturnix coturnix japonica) with those in quail having regressed gonads as a result of exposure to short days. in expt 1, male quail were assigned to one of three treatment groups: (1) intact, exposed to 16 h light: 8 h darkness and injected with oil (group 16l); (2) gonadectomized, exposed to 16 h light: 8 h darkness and injected with 2-5 mg testosterone p ...19761255064
the half-life of luteinizing hormone in intact and castrated quail during photoperiodic stimulation.in the japanese quail (coturnix coturnix japonica) the plasma concentration of luteinizing hormone (lh) depends on the physiological state of the animal. low levels are found in sexually immature birds on short days (0.8 +/- 0.1 (n = 20) ng/ml) while after exposure to long days, sexually mature birds have a significantly higher lh level (4.4 +/- 0.4 (n = 20) ng/ml). castration of long day males results in an even higher rise in lh concentration to 16.8 +/- 1.8 (n = 16) ng/ml. when the half-life ...1976964208
[age-specific learning ability in japanese quails (coturnix coturnix japonica)].the main question of our investigation is: do there exist age-specific learning abilities in animals? 120 quails (coturnix coturnix japonica) of 12 different age groups (between one day and 20 weeks) were tested in a combination apparatus 0y using two training methods. 60 quails were trained with decreasing (1), 60 other quails with increasing learning assistance (2). in each case the learning period lasted 5 days after which the animals were tested in a two-way choice apparatus and in a simple ...1976942637
magnesium deficiency, requirement and toxicity in the young japanese quail.studies of magnesium deficiency, requirement and toxicity in the young japanese quail (coturnix coturnix japonica) were conducted. day-old birds were fed an adequate purified diet containing 35% soy protein to 2 weeks of age. residual magnesium in the diet without any added magnesium salts was 21 p.p.m. magnesium was supplied by graded amounts of mgso4 to a total of 11 levels ranging from 125 to 2,000 p.p.m. deficiency signs included poor growth, and occasionally excitability, gasping and convul ...1976934998
effect of dieldrin and calcium on the performance of adult japanese quail (coturnix coturnix japonica).two experiments were conducted to determine the effects of dieldrin and calcium on reproductive performance of quail. at 25% egg production the quail received diets containing 0,10 or 25 p.p.m. of dieldrin for 6, 28-day periods in experiment 1 and 0, 5, or 25 p.p.m. of dieldrin for 4, 28-day periods in experiment 2. pesticide treatments were employed with diets containing 0.5% and 3.0% calcium. the results show that egg shell thickness, cracked eggs, egg production, feed consumption, egg weights ...1976934984
[on the histotopochemistry of the uterovaginal region in the quail (coturnix coturnix japonica) (author's transl)].the surface epithelium of vagina, uterovaginal region and uterus as well as the uterine and uterovaginal glands of 18 mature female quails were studied with histochemical methods. as in other avian species also in the quail a storage of spermatozoa in the lightly coiled uterovaginal glands takes place. the functional specialization of these glands is underlined by their distinct enzyme pattern. a strong reactivity of enzymes from oxidative pathways and of adenosine triphosphatase between epithel ...1976137647
electrical stimulation of the hypothalamus and luteinizing hormone secretion in japanese quail.experiments were undertaken to localize those hypothalamic areas in the male quail (coturnix coturnix japonica) where electrical stimulation would increase lh secretion. the posterior basal hypothalamus was stimulated with rectangular pulses (height 500 mua) through a bipolar electrode for 6 min, blood samples being taken for lh assay 20 min before, and 2, 10, 20 and 30 min after stimulation. the highest plasma concentration was observed in the 2 min sample. over the next 30 min the lh level dec ...19751206328
reproductive response to intermittent light regimens in coturnix coturnix japonica.the effect of intermittent light regimens of one hour of light interspaced with dark periods of one, two or three hours, repeated three, four, five or six times per day was determined for age to first egg, hen day percent production and egg production for a 126 day experimental period in females, and the age to initial response of the cloacal gland in males. three broad classes of response were noted based on the equivalent light period (elp), which is defined as the interval from the beginning ...19751228720
combining ability in a diallel cross of three lines of coturnix coturnix japonica.three random-bred lines of japanese quail were crossed in a 3 x 3 diallel to estimate their combining ability for hatchability, growth rate, and age at 25, 50, 75 and 100% lay. the experiment was conducted as a randomized complete block design with a 3 x 3 x 2 x 2 factorial arrangement of treatments (3 lines of sire x 3 lines of dam x 2 ambient-temperature stresses x 2 sexes). approximately 1200 eggs in three hatches were set; 496 progeny measured for five week body weight; and 212 hens observed ...19751228714
the effect of dietary dilution on the intestinal anatomy of the japanese quail (coturnix coturnix japonica).there was an increase in the length of the small intestine, caeca and colon when japanese quail (coturnix coturnix japonica)were fed on a diet diluted with fibre. no differences were found in the length of the villi and the thicknesses of the submucosal layers throught the large and most of the small intestine between birds fed on the normal diet compared with those fed on the diluted diet. the birds fed on the normal diet appeared to have more mucous goblet cells and lymph nodes in the caeca th ...19751215679
[effect of accelerations, hypergravity and hypokinesia on protein metabolism in japanese quail. i. effect on muscle composition].the effect of hypokinesia, hypergravity achieved by centrifugation and additional weight load on the content and composition of proteins and nucleic acids in the chest and pelvic muscles of four groups of quails (coturnix coturnix japonica) was studied. the first group was used as controls, the second included hypokinetic birds, the third was made of birds with an additional weight load (the load was a double weight of the animal) and the fourth group included birds exposed to acceleration of 3 ...20131207021
influence of the egg formation cycle on alpha-aminoisobutyric acid (aib) transport by magnum mucosa and liver slices in japanese quails (coturnix coturnix japonica). 1975241548
[polymorphism of proteins in 3 strains of domestic quail (coturnix coturnix japonica)].in three breeds of domestic quail (coturnix coturnix japonica) with different zootechnical characteristics, heterozygote frequencies of egg white and serum proteins are variable. data are briefly explained by the genetic homeostasis theory.197557750
effect of prolactin on thyroid function in japanese quail (coturnix coturnix japonica). 19751193366
standards of morphological development of the quail, coturnix coturnix japonica, embryo.the morphologic growth of 290 japanese quail embryos was analyzed to enable an assessment of the developmental status of an organism and permit the evaluation of experimental effects on development. the growth of 36- to 228-hr embryos was analyzed according to hamburger and hamilton's (1951) stages of development for the chick; the growth of 240-hr and older embryos was analyzed by correlating age with the length of 5 morphologic structures, toe, leg, beak, wing, and total. a correlation of +.99 ...19751183856
[interactions of estradiol benzoate and progesterone on the development of the oviduct in quail. ii. (coturnix coturnix japonica). ultrastructural studies of two types of responses obtained by varying doses of estradiol benzoate injected]. 19751181239
[biochemical polymorphism of japanese quail (coturnix coturnix japonica): comparison of functionally different proteins (author's transl)].the polymorphism observed among the enzymes involved in the respiratory metabolism (lactate dehydrogenase, malate dehydrogenase, phosphoglucomutase, phosphohexoseisomerase, glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase fructose 1-6 diphosphate dehydrogenase) is less important than that of the enzymes physiologically less essential, such as the various esterases, the alkaline phosphatase, the alcohol dehydrogenase, and of the non-enzymatic proteins (ovalbumin, ovoglobulins, ...19751140313
preference and discrimination between response-dependent and response-independent schedules of reinforcement.four asian quail (coturnix coturnix japonica) were exposed to concurrent-chain schedules, the terminal links of which were either variable-interval 30 sec and variable-time 30 sec, or fixed-interval 30 sec and fixed-time 30 sec. except for one bird that exhibited a preference for the variable-interval schedule over the variable-time schedule, no consistent preferences were demonstrated for response-dependent or response-independent schedules. however, response rates were three times greater on r ...197516811865
ca-2+-mg-2+-activated atpase in the shell gland of japanese quail (coturnix coturnix japonica). 1975237726
binary assessment of early approach-behaviour in the japanese quail.visually-elicited early approach-behaviour was studied in 1013 japanese quail chicks (coturnix coturnix japonica) by a newly developed, binary assessment procedure. this procedure was shown to be highly effective for identifying approach preferences and related indivisual differences in early approach-behaviour. experimental results show that quail chicks exhibit approach-responses to a flashing light. within various paired intensity-combinations of the tested intensity-range of approximately tw ...19751163852
studies on differentiation of mûllerian ducts in the quail, coturnix coturnix japonica. ii. effects of sex hormones on nucleic acid synthesis in isolated female ducts.the present investigations were carried out in an effort to determine the mechanisms underlying differentiation in the avian müllerian duct, especially the asymmetrical differentiation of the female ducts. using the isolated female ducts of japanese quail, the incorporations of 3h-uridine and 14c-thymidine were determined in vitro at several embryonic stages. incorporation of 3h-uridine was altered with some synchronous fluctuation during the embryonic period in both the left and right ducts, wh ...19751127406
[location of nucleolar organizers in somatic nuclei of newly-formed ovary of japanese quail (coturnix coturnix japonica)].the localization of nucleolar organizers has been studied in the nuclei of the somatic cells of one-day-old quail ovaries with in situ hybridization techniques. in these cells the nucleolus apparatus has a chromocentre formed by heterochromatin and small nucleoli typified by cytochemical and ultrastructural characteristics, associated at the periphery of the chromocentre. after hybridization wtih [3h] rrna (28 s-18 s) and histoautoradiography, levels of radioactivity are detected only on the nuc ...1975811380
studies on combined effects of organophosphates and heavy metals in birds. i. plasma and brain cholinesterase in coturnix quail fed methyl mercury and orally dosed with parathion.we found that mercury potentiated the toxicity and biochemical effects of parathion. male coturnix quail (coturnix coturnix japonica) were fed a sublethal concentration of morsodren (4 ppm as methyl mercury) for 18 weeks. this resulted in an accumulation of 21.0 ppm of mercury in the liver and 8.4 ppm in the carcass. birds fed clean feed and those fed morsodren-treated feed were orally dosed with 2, 4, 6, 8,and 10 mg/kg parathion, and their 48-h survival times compared. the computed ld50 was 5.8 ...19751125450
the rate of testicular development in japanese quali (coturnix coturnix-japonica) following stimulation of the extra retinal photoreceptor. 19751112322
[spontaneous tumours in japanese quails].the occurrence of spontaneous tumours in 8 female quails (c. coturnix japonica) aged 1.5-3 years was stated. in 7 females the adenocarcinomas of the oviduct with numerous metastases in the abdominal cavity were recognized. in one female the haemangiosarcoma arising from the pleura with few metastases in the abdominal cavity was found. the possibility of relation between the high productivity and the age of females as well as the frequency of the oviduct adenocarcinomas was pointed out.197516296037
[antibiotic 26a as a factor stimulating the body growth of japanese quails (coturnix coturnix japonica)].groups i and ii of japanese quails were given 50 ppm of oxytetracyclin and 23 ppm of the antibiotic 26a in drinking water during 3 weeks, from the 7th to the 28th day of life. no antibiotics were given to group iii. in order to determine the properties of the antibiotic 26a as a stimulator of growth, the mean values of the body weight gains in the individual groups were compared by statistical methods. during the 1st and 2nd weeks of the experiment, the mean body weight gains in group ii were th ...197516296036
the effects of prenatal and postnatal auditory stimulation on early vocalization and approach behavior in the japanese quail (coturnix coturnix japonica). 19751122222
effect of chlorinated hydrocarbons on shell gland carbonic anhydrase and egg shell thickness in japanese quail.japanese quail (coturnix japonica) were fed different levels of pesticide in their diets for 15 weeks. the levels of pesticide used were 25, 50, 100, 200 p.p.m. dde 25, 50, 100, 200 p.p.m. ddt and 50 p.p.m. pcb. carbonic anhydrase activities were analyzed in the shell glands and blood; pesticide concentration in the eggs of the first experiment was measured; egg weight, shell weight and shell thickness were also measured. no depression in growth was observed at any levels of pesticides used. qua ...1975806067
[polymorphism of serum esterases of japanese quail (coturnix coturnix japonica)].polymorphism of plasma esterases in quail is very important. phenotypic frequences of genetic variants of three esterases are examined and they show a high proportion of heterozygotes. the maintenance of this polymorphism is supposed to be due to the organophosphorus pesticides.1975129259
[polychromatism in eggshell of domestic quail (coturnix coturnix japonica). iii. variability and mechanism of phenotype transmission of the dominant form].the study of the transmission of egg shell color and pattern in the quail (coturnix coturnix japonica) indicates a polygenic inheritance modality, determined by the female sex.1975126743
biological effects of d2o administration to coturnix japonica. 19744621006
intra-sire regression of offspring on dam as a measure of the additive genetic variance for five week body weight in coturnix coturnix japonica. 19744462105
native and modified bowman-birk trypsin inhibitor--comparative effect on pancreatic enzymes upon ingestion by quails (coturnix coturnix japonica). 19744857235
stereotaxic topography of the brain of the quail (coturnix coturnix japonica). 19744607102
[identification of the w chromosome in japanese quail, coturnix coturnix japonica]. 19744212670
dna and rna concentration in the liver of japanese quail (coturnix coturnix japonica) during growth. 19744837618
interaction of dieldrin and dde residues in japanese quail (coturnix coturnix japonica). 19744433815
size correlations between heterochromatin and nucleolus during interphase in the quail, coturnix coturnix japonica. 19744132900
further observations on the toxicity of navy beans (phaseolus vulgaris) for japaneses quail (coturnix coturnix japonica). 19744846736
effect of preincubation storage, parental age, and rate of lay on hatchability in coturnix coturnix japonica. 19744833299
the effect of high ambient temperature on growth and the correlations of body weights in coturnix coturnix japonica. 19744823164
the influence of flock numbers of coturnix coturnix japonica on lysozyme level in blood serum. 19744476231
[formation of the bird oocyte. autoradiographic study in the laying japanese quail (coturnix coturnix japonica) using tritiated leucine]. 19744422074
sounds produced by hatching japanese quail (coturnix coturnix japonica) as potential aids to synchronous hatching. 19744418964
[metabolism of radioactive pregnenolone and progesterone in the embryonic gonads of quail (coturnix coturnix japonica) in organ culture]. 19734797014
[repercussions of hypothalamic deafferentiation combined with optic nerve section on the photosexual reflex in the quail (coturnix coturnix japonica)]. 19734208692
divergent selection under two nutritional environments for packed erythrocyte volume in japanese quail.two-way selection for two-week packed erythrocyte volume (pcv) was practiced for four generations under two nutritional environments in the japanese quail (coturnix coturnix japonica). one environment was an iron, copper-"adequate" diet and the other was iron, copper-deficient "stress" diet. response to selection was greater in both directions under the adequate environment than under the stress environment. after four generations of selection there were 29% and 18% differences between the high ...197317248623
[premitotic and premeiotic dna cells of the female japanese synthesis in the germinal quail embryo (coturnix coturnix japonica)]. 19734708351
effect of fcs on imprinting in japanese quail (coturnix coturnix japonica). 19734706578
correlation between germinal vesicle and oocyte development in the adult japanese quail (coturnix coturnix japonica). a cytochemical and autoradiographic study. 19734722149
studies on l-glycerol-3-phosphate dehydrogenases in japanese quail, coturnix coturnix japonica. ii. comparison of activity of mitochondrial and cytoplasmic l-glycerol-3-phosphate dehydrogenases in testes and liver of developing male japanese quail. 19734350897
the fine structure of the retina in the japanese quail (coturnix coturnix japonica). i. pigment epithelium and its vascular barrier. 19734795606
[intense staining of the layer of "wedge granules" in the premature oocytes of the japanese quails (coturnix coturnix japonica) after injection with h3-l-leucine]. 19734125104
pathways for androgen synthesis in vitro by the testes of japanese quail (coturnix coturnix japonica). 19724405268
magnesium requirement for survival and growth of japanese quail (coturnix coturnix japonica). 19724660992
studies on l-glycerol-3-phosphate dehydrogenases in japanese quail, coturnix coturnix japonica. i. multiple components and some enzymatic properties of nicotinamide adenine dinucleotide-linked l-glycerol-3-phosphate dehydrogenase from liver and testes. 19724346261
estimation of the duration of spermatogenesis in japanese quail, coturnix coturnix japonica, using antispermatogonial chemicals. 19724344401
eyes have a role in photoperiodic control of sexual activity of coturnix.in blinded japanese quail (coturnix coturnix japonica) encephalic photoreception of the stimulus from long photoperiods is sufficient to induce and maintain normal gonadal function in females (egg laying) and in males (enlargement of the cloacal gland). however, the termination of sexual activity by short days is dependent on these birds having experienced long days at the time of blinding.197217815368
-aminolevulinic acid dehydratase from shell gland and liver of japanese quail, coturnix coturnix japonica. i. purification, properties and hormonal induction. 19725082517
selected characteristics of eggs produced by japanese quail (coturnix coturnix japonica). 19724647595
pathogenicity of eimeria tsunodai for japanese quails (coturnis coturnix japonica) and susceptibility of the coccidium to some drugs. 19724672595
observations on the ultrastructure and differentiation of leydig cells in the testis of the japanese quail (coturnix coturnix japonica). 19725016866
[some aspects of the evolution of the fine cytology of the ovarian cortex of the quail (coturnix coturnix japonica)]. 19724622877
eimeria tsunodai sp. nov. (protozoa; eimeriidae). a caecal coccidium of japanese quails (coturnix coturnix japonica). 19725063025
cytoplasmic uniaxial radial symmetry during the early final growth period in the oocytes of the japanese quail (coturnix coturnix japonica). 19725013065
effect of hypothalamic implantation of testosterone on photostimulated testicular growth in japanese quail (coturnix coturnix japonica). 19725010817
effects of ddt and its metabolites on thyroid of the japanese quail, coturnix coturnix japonica. 19724643551
["thyroidectomy cells" and "castration cells" in the japanese quail, coturnix coturnix japonica. ultrastructure and cytoenzymology]. 19724334805
haematology of the japanese quail (coturnix coturnix japonica). 19715167145
eggshell thinning in japanese quail fed mercuric chloride.the eggs produced by developing japanese quail (coturnix coturnix japonica) fed 1 to 8 parts of mercury per million as mercuric chloride for 10 weeks have thinned shells. total amounts of mercury in tissues were quite proportional to the dosage and were higher in males than in females. methylation of mercury was not observed.19715098963
response to nutritional deprivation in the japanese quail (coturnix coturnix japonica). 19715569999
the long-term effects of early malnutrition on dna content and growth in the tissues of japanese quail (coturnix coturnix japonica). 19715569995
[incorporation of c 14 -thymidine in the subcortical cytoplasmic organelles of the oocytes of the japanese quail (coturnix coturnix japonica) several days before maturation]. 19714262930
[on the oviducts of the quail (coturnix japonica). i. morphology and structure]. 20095165355
autoradiographic evidence for cytoplasmic dna synthesis during the early final growth period in the oocytes of the japanese quail (coturnix coturnix japonica). 19715546654
[study of some biological constants in the japanese quail coturnix coturnix japonica]. 19715104313
carbon uptake response by sertoli cells and epithelial cells lining the duct system of the japanese quail (coturnix coturnix japonica). 19714101366
extranuclear 3h-thymidine incorporation in subcortical cytoplasmic organelles of primary oocytes in the japanese quail (coturnix coturnix japonica). 19705483770
the influence of prolactin on the reproductive activity of the japanese quail, coturnix coturnix japonica. 19705428955
some aspects of thermoregulation in the adult japanese quail (coturnix coturnix japonica). 19705505561
prolactin and sexual maturation in the japanese quail, coturnix coturnix japonica. 19705430132
[teratogenic effects of parathion (an organo-phosphate insecticide) on the embryonic skeleton of the japanese quail (coturnix coturnix japonica)]. 20135450209
the effects of hypophysectomy and testosterone propionate on the testes of japanese quail, coturnix coturnix japonica. 19705442586
pineal hydroxyindole-o-methyltransferase (hiomt) activity in female japanese quail. (coturnix coturnix japonica). 19705473374
vocalizations elicited by electrical brain stimulation in coturnix coturnix japonica. 19705434645
a study of the normal development of the leg skeleton in the quail (coturnix coturnix japonica). 19705413562
[histochemical study of nucleic acids in the oocytes of the japanese quail (coturnix coturnix japonica) a few days before maturation]. 19704252169
[vitamin e and the endocrine glands. experimental histological study in coturnix coturnix japonica]. 19695400868
[vitamin e and the gonads. experimental study in coturnix coturnix japonica]. 19695400867
naturally occurring mixed-cell sarcoma in a quail (coturnix coturnix japonica). 19695389430
the effect of hypothalamic lesions on gonadotrophin release in the japanese quail (coturnix coturnix japonica). 19695388360
the toxicity of dieldrin (heod) to japanese quail (coturnix coturnix japonica). 19695798734
the blood supply to the pituitary and basal hypothalamus in the japanese quail (coturnix coturnix japonica). 19695765748
gonadotropin potency variation in anterior pituitaries from sexually amature male quail (coturnix coturnix japonica). 19695389888
the effect of gold thioglucose on food consumption and reproduction of the japanese quail (coturnix coturnix japonica). 19695355510
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