Publications

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the distribution of mallophaga on the domestic pigeon (columba livia). 19715161201
electrophysiology of contralateral and ipsilateral visual projections to the wulst in pigeon (columba livia). 19715161304
a comparative study of the peroxidases from thyroid glands of pigeon (columba livia domestica) and common myna (acridotheres tristis). 19714400978
an analysis of the crop contents of white carneaux pigeons (columba livia), days one through twenty-seven. 19714322783
studies on a "renin-angiotensin" system in the normal and hypophysectomized pigeon (columba livia). 19714323879
effect of necrogenic doses of isoproterenol on the heart of the tench (tinca tinca--osteoichthyes), the frog (rana temporaria--anura) and the pigeon (columba livia--aves). 19714261967
immunohistochemical localization of prolactin in the pituitary gland of the pigeon, columba livia. 19724118344
ependyma & sub-ependyma in the indian pigeon, columba livia & duckling, anas platyrhynchos. 19724118888
the effects of hypophysectomy on the metabolism of adrenal steroids in the pigeon (columba livia). 19724336117
sleep in the domestic pigeon (columba livia). 19724339457
[enzyme histochemical and fine structural observations on the pecten oculi of the pigeon (columba livia) and laughing gull (larus ridibundus)]. 19724343361
effects of hyper- and hypofunctional states on the zonation of, and in vitro corticosterone production by the adrenocortical tissue in the domestic pigeon. 19724345075
effect of ether stress on crf-acth system of the domestic pigeon. 19724345076
the effects of dietary protein content on water requirements and ammonia excretion in pigeons, columba livia. 19724404574
ultrastructure of the avian retina. an anatomical study of the retina of the domestic pigeon (columba liva) with particular reference to the distribution of mitochondria. 19724640866
[the detection of the domestic pigeon mallophagan bonomiella columbae for the first time in gdr]. 19724666504
neurohypophysial hormones and sexual behavior in males of the domestic fowl (gallus domesticus l.) and the pigeon (columba livia gmel.). 19725009669
a polygraphic and behavioral study of sleep in the pigeon (columba livia). 19725026409
formation and utilization of acetoacetate and d-3-hydroxybutyrate by various tissues of the adult pigeon (columba livia). 19725075781
localization of visual structure in the diencephalon of pigeon (columba livia). 19725079258
effect of hygromycin-b on pigeons (columba livia) with and without trichomonas gallinae. 19725079869
ontogeny and localization of -crystallin antigen in the developing pigeon (columba livia) lens. 19724560839
[importance of domestic pigeons in human salmonellosis]. 19724563870
[occurrence of paratanaisia bragai (santos, 1934) freitas, 1959 (trematoda aucotylidae) in domestic pigeons (columbia livia domestica)]. 19724681326
[following carrier-pigeons in helicopter. ii]. 19734792590
heart rate and blood pressure responses to electrical stimulation of the central nervous system in the pigeon (columba livia). 19734579121
brain mechanisms and feeding behavior in the pigeon (columba livia). ii. analysis of feeding behavior deficits after lesions of quinto-frontal structures. 19734520143
polymorphism and the evolution of a continuous breeding season in the pigeon, columba livia. 19734522401
the organization and projections of the paleostriatal complex in the pigeon (columba livia). 19734698909
daily rhythms of plasma corticosterone in the common pigeon, columba livia. 19734699365
nonvisual photic responsiveness in newly hatched pigeons (columba livia).overt behavioral arousal was elicited by light stimulation in pigeon hatchlings. the sensitivity is not mediated via the retina or by direct stimulation of the brain, but rather it is most likely a dermal sensitivity.19734702573
opponent-color units in the thalamus of the pigeon (columba livia). 19734719087
neural connections of the "visual wulst" of the avian telencephalon. experimental studies in the piegon (columba livia) and owl (speotyto cunicularia). 19734721779
connections of the anterior commissure in the pigeon (columba livia). 19734723065
de lange characteristics for the fresh-water turtle chrysemys picta picta, and the pigeon columba livia. 19734746984
serotypes in saccharomyces telluris: their relation to source of isolation.three serotypes have been characterized with three reference strains of saccharomyces telluris and designated as a, b, and c. one reference strain of torpulopsis bovina, the imperfect form of s. telluris, belonged to serotype b. strains (141) of s. telluris isolated from four columbid species were serotyped. all 98 strains of this yeast isolated from columba livia (feral pigeon) belonged to serotype b. three other columbid species, c. leucocephala (white-crowned pigeon), c. fasciata (band-tailed ...19734762113
brain mechanisms and feeding behavior in the pigeon (columba livia). i. quinto-frontal structures. 19734765854
[new data on visual projections in the pigeon (columba livia)]. 19734770387
injurious effect of cadmium on testis of domestic pigeon & its prevention by zinc. 19734782372
comparison of differential reinforcement of low rates (drl) performance in pigeons (columba livia) and crows (corvus brachyrhynchos). 19744823247
thalamic organization of the retino-thalamo-hyperstriatal pathway in the pigeon (columba livia). 19744827866
[the relationship between the so-called voice break and the daily ketosteroid excretion in young pigeons (columba livia domestica)]. 19744411204
mercury residues in the common pigeon (columba livia) from the jackson, mississippi, area--1972. 19744444928
nerves and nerve terminations in the heart of columba livia. 19744451283
chromosome homology in birds: banding patterns of the chromosomes of the domestic chicken, ring-necked dove, and domestic pigeon. 19744462977
mechanism of action of alpha-chlorohydrin on testes of the domestic pigeon : a confirmation. 19744464268
ultrastructural and acetylcholinesterase investigations on the pancreas intrinsic innervation of two bird species (columba livia domestica gm. and euodice cantans gm.). 19744618821
[effect of hormonal agents on the gonads of semi-domestic pigeons]. 19744215261
the subgenus persicargas (ixodoidea: argasidae: argas). 27. the life cycle of a. (p.) robertsi population samples from taiwan, thailand, indonesia, australia, and sri lanka.to provide background data for an investigation of biological interrelationships between argas (persicargas) robertsi hoogstraal, kaiser and kohls and 3 arboviruses (kao shuan, pathum thani, and nyamanini) isolated from this tick species, domestic pigeons were used as experimental hosts to study the life cycle of population samples from taiwan (ta), thailand (th), indonesia (in), sri lanka (sr), and australia (au). the life cycle (at 28-30 degrees c and 75% rh) required 2-10 months. biological d ...19751226539
[feral domestic pigeons in large cities]. 19751164387
[temporary sterilization of domestic pigeons turned wild]. 1975806190
[infestation of carrier pigeons with obligatory ectoparasitic arthropods spp. in germany]. 19751200966
olfactory thresholds of pigeons (columba livia), quail (colinus virginianus) and chickens (gallus gallus). 1975236143
[histochemical studies of oxidative enzymes in the gastric mucosa of sheat-fishes, frogs, tortoises and pigeons].oxyntic cells of gastric glands of the sheat-fish silurus glanis, frog rana temporaria, tortoise agrionemis horsfieldi and pigeon columba livia exhibit intensive reactions on dehydrogenases of lactate, alpha-ketoglutarate, glutamate, succinate, malate and glucose-6-phosphate which indicate high energy metabolism necessary for the production of hcl by these cells. cytoplasm of these cells is stained for the presence of nucleic acids, which may be associated with the other function of the oxyntic ...19751082694
candid albicans associated with the gastrointestinal tract of the common pigeon (columbia livia).candida albicans was cultured from the upper gastrointestinal tract of 44% and from the lower alimentary tract in 6% of 50 common pigeons (columba livia). thirty per cent of samples of pigeon droppings collected from different locations were positive for the yeast. the colony forming units for positive samples ranged from 2 times 10-2-2-8times 10-6 per g dry feces. the percentage of antigenic groups a and b for the strains of c. albicans isolated was approximately the same as for strains isolate ...19751091996
fine structure of the endogenous stages of eimeria labbeana. i. the first generation merozoites.the fine structure of the 1st generation merozoites of eimeria labbeana from the ileal mucosa of artificially infected pigeons (columba livia) was investigated and described. the 1st generation merozoites which appeared between 36-48 hr after infection averaged 4.4 times 2.1 mum in size. the 3-membraned pellicle was irregular in texture and harbored a single micropore, and many micropore-like invaginations. closely apposed to the inner pellicular membrane were seen 22 microtubules, each 22-25 ...19751117437
[immunization of pigeon (columba livia dom.)]. 19751131159
an electron microscope study of the retino-receptive layers of the pigeon optic tectum.the fine structure of the superficial layer of the optic tectum of the pigeon, columba livia, has been examined both in normal animals and after unilateral eye removal. optic afferent terminals distributed throughout sublaminae iia-f, are principally concentrated at three depths in the retinoreceptive zone. at first, degeneration of optic afferent terminals occurs as swelling of synaptic vesicles and accumulation of neurofilaments and later as dense degeneration. there appear to be several class ...19751150929
effects of short and long term exercise on intracellular glycogen and fat in pigeon pectoralis.in an attempt to determine the functional role of the component broad white and narrow red fibre types during activity, the pectroalis muscle of the adult pigeon (columba livia) was electrically stimulated in situ after anaesthetizing the birds with sodium pentobarbital. for examination of the effect of short term exercise, the pectoral muscle of one side was stimulated through the innervating brachial plexus, using an electronic stimulator for 1 hr, and a biopsy sample was taken from the stimul ...19751152305
a cytoarchitectonic analysis of the spinal cord of the pigeon (columba livia).the spinal gray of the pigeon is described cytoarchitectonically to establish a foundation for anatomical and physiological studies of the pigeon spinal cord. the material includes segments from the high cervical cord through the lumbosacral enlargement, and nine cellular layers are described. in addition to this laminar organization, various distinct cell groups such as the dorsal magnocellular column, column of terni, marginal cells and lobes of lachi are described. layers i-iv occupy the head ...19751165324
spinal terminal fields of dorsal root fibers in the pigeon (columba livia).this paper describes the spinal pattern of brachial and lumbosacral dorsal root terminations in the pigeon. these are presented within the framework of the cytoarchitectonic analysis of the preceding report (leonard and cohen, '75). at the level of dorsal root section and immediately adjacent sections dense terminal fields were evident throughout the ipsilateral dorsal horn (layers i-v), including the substantia gelatinosa. however, degeneration in the substantia gelatinosa was prominent only wi ...19751165325
interhemispheric projections of the optic tectum in pigeon.the anatomical patterns of intertectal pathways in pigeon (columba livia) were studied with modifications of the nauta-gygax silver technique following discrete unilateral tectal lesions. no homotopic connections between the two optic tecta were found. the data do not support an anatomical basis for the behavioral observation of interhemispheric reversal of left-right mirror-image patterns in monocularly trained pigeons. degenerated fibers of passage were identified in the tectal commissure, the ...19751174935
the retino-thalamo-hyperstriatal pathway in the pigeon (columba livia). 19751182505
trigeminal nerve and eating in the pigeon (columba livia): neurosensory control of the consummatory responses.electrophysiological, neurobehavioral, and cinematographic techniques were used to study the role of the trigeminal nerve in the neurosensory control of eating. analaysis of single-unit data recorded in the pigeon's trigeminal ganglion indicates that the trigeminal nerve provides somatosensory inputs from the oral region that signal the location and movement of food and monitor the extent of mouth opening. trigeminal deafferentation, although it does not affect pecking or swallowing, severly imp ...19751184792
responses of sympathetic postganglionic neurons to peripheral nerve stimulation in pigeon (columba livia). 19751193200
effect of virulent trichomonas gallinae on the band-tailed pigeon.nine trichomonas-free band-tailed pigeons (columba fasciata fasciata) trapped in colorado died from experimental infection with jones' barn trichomonas gallinae 7.1 days (av.) post-inoculation. three experimentally infected domestic pigeons (c. livia) used as controls died 5.7 days (av.) post-inoculation. three band-tailed pigeons from colorado naturally infected with avirulent t. gallinae. trichomonads obtained from a fatal case of trichomoniasis in a band-tailed pigeon from california killed a ...19751195487
avian febrile response.the febrile response of the pigeon (columba livia) was characterized for comparison with our present day understnading of mammalian fever. 2. when injected with live pasteurella multocida the birds became febrile and died. 3. varying doses of dead bacteria produced a complex dose-dependent febrile response. 4. antipyretics effectively attenuated the febrile response to dead bacteria. 5. the similarities of reptilian, avian and mammalian fever suggest a common origin and perhaps a similar adaptiv ...19751204628
inhibition of spermatogenesis in the pigeon, columba livia gmelin, following the administration of methallibure (ici 33828): a confirmation. 19751218908
[cerebellum of birds: quantitative and comparative study of the purkinje cells (author's transl)].the quantitative and comparative analysis of the purkinje cells indicates the higher mean linear density in the anterior lobe, with regard to posterior lobe, in the cerebellum of the dung cook, gallus gallus. likewise the mean linear density of the purkinje cells in that species, was significantly higher than that estimated in the cerebellum of the pigeon, columba livia. the relationship between these quantitative differences and the type of locomotion, the walk, predominant in the dung cock is ...19751219926
effect of some autonomic drugs on heat defence in the pigeon.as compared to the time of median control death (i.e. the time inducing 50% death in untreated birds at 50 degrees c), exogenous noradrenaline afforded 100% survival in the blue rock pigeon, columba livia. the survival percentages with the other autonomic drugs were: chlorpromazine 70%; reserpine 60%; adrenaline 60%; pentolinium 50% and dihydroergotamine 30%. the time of median control death at 50 degrees c was found to be 3.5 hours in the pigeon. during 10-day exposure at 45 degrees c all the b ...19751237209
seasonal occurrence of haemoproteus columbae kruse and its vector pseudolynchia canariensis bequaert.seasonal prevalence of haemoproteus columbae and its vector pseudolynchia canariensis in the feral pigeon (columba livia) population of detroit, michigan has been studied for 5 years. the greated prevalence of h. columbae infection occurs during fall and winter and is lowest during the spring, correlating with changes in the vector population.1975803576
the inability of surgical bursectomy in the newly hatched period to affect antibody formation in the pigeon (columba livia).surgical bursectomy was performed in newly hatched pigeons within 24 hours of hatching. the effect of bursectomy on the immune responsiveness was evaluated by studying antibody formation to sheep red blood cells (srbc) and brucella abortus organisms and by the presence of serum immunoglobulins after immunoelectrophoresis. surgically bursectomized pigeons responded as well to srbc and brucella as did the non-bursectomized controls. there was no statistically significant difference in the geometri ...1975810416
[use of the feral pigeon (columba livia) to monitor atmospheric lead pollution].pigeons living in cities show a large accumulation of lead in their bodies. the lead concentration in their lungs and bones varied according to the pollution level of their territory caused by automobile gas exhausts.1975813896
[a comparative electron microscopic study of the peripheral blood leukocytes of vertebrates].the ultrastructure of leukocytes of the peripheral blood was studied in representatives of classes of fishes (cyprinus carpio), amphibia (rana redibunda, bufo bufo), reptiles (testudo horshfield), birds (columba livia) and mammals (rattus norvegicus). the granules are characterized by homogeneous or heterogeneous matrix. the granules of special leukocytes (turtle) and pseudoesinophils (pigeon) have larger dimensions than those in neutrophils of other animals. the matrix of the eosinophil granule ...1975818982
studies on the biosynthesis of pancreatic glucagon in the pigeon (columba livia).the biosynthesis of glucagon was studied in microdissected pigeon pancreatic, islets. [3h]-tryotophan and [3h]leucine were incorporated into big and little glucagon. no precursor-product relationship was evident between big and little glucagon after radioactive pulsechase and immunoreactive chase incubations. radioactive and immunoreactive little glucagon and immunoreactive big glucagon were actively secreted and the synthesis of both glucagons was inhibited by high concentrations of glucose. [3 ...1976782450
cryptococcus neoformans in the crops of pigeons following its experimental administration.cryptococcus neoformans (5 x 10(6) yeast cells) was given per os to 10 pigeons (columba livia) proved to be free (crops and excreta) of c. neoformans prior to experimentation. the yeast was recovered from the droppings of 9 pigeons the day after ingestion but was still present in the droppings of 1 pigeon on the 22nd day after ingestion. the crop was much more constantly positive than the droppings and for a much longer time since positive in 9 pigeons on the first day it was still positive in 2 ...1976793055
effect of cannabis & opium on the testis of the pigeon columba livia gmelin. 1976955684
evidence against the response-shift account of hyperstriatal function in the pigeon (columba livia).pigeons with hyperstriatal lesions and unoperated controls were given minimal or extended side-key pretraining prior to acquisition of a position discrimination. operated birds were impaired following extended, but not minimal, pretraining. the birds then acquired a simultaneous color discrimination with posiversals of the color discrimination, operated birds were impaired, and this was primarily due to an exaggeration of perseverative responding to the former positive stimulus. analysis of choi ...1976956467
[mycobacterial intestinal disease in woodpigeons (columbia palumbus) (author's transl)].during and shortly after the second world war, an infection bearing a resemblance to avian tuberculosis was observed in woodpigeons in denmark and great britain. these birds had been found dead or been shot. the patogenic agent, however, could not be isolated by the usual methods. in the netherlands, the disease was also detected in woodpigeons and occasionally in psittacine birds. the histological changes bore a resemblance to those observed in johne's disease. detailed bacteriological and expe ...1976982412
ornithosis in domestic pigeons gone wild in bratislava. 1976987103
ornithosis in domestic pigeons gone wild in bratislava. 1976987114
the fine structure of the endogenous stages of eimeria labbeana. 4. microgametogenesis.the fine structure of the microgamonts and microgametes of eimeria labbeana from the columnar epithelial cells of the ileal mucosa of experimentally infected pigeons, columba livia, has been described and compared with that of similar stages in other species of eimeria. the microgamonts averaged 8.0 x 10.0 mum (6.7-8.4 x 9.0-11.4 mum), had a maximum number of 27 nuclei each (0.8-1.0 x 1.0-1.3 mum), and showed various stages of mitotic nuclear divisions without the appearance of detectable mitoti ...1976997718
effect of clomid on thyroids, diencephalic ependyma & subependymal cells in ovariectomized pigeon columba livia (gmelin). 19761024979
carbamate poisoning. effect of certain carbamate pesticides on esterase levels in the pheasant (phasianius colchicus) and pigeon (columba livia). 19761245657
mycotic flora in the lower digestive tract of feral pigeons (columba livia) in the el paso, texas area.fourteen species of fungus were isolated from the lower digestive tract of 39 of 80 pigeons. sixteen pigeons had concurrent isolations while two harbored three species. fungi isolated were allescheria boydii, aspergillus spp., candida krusei, chrysosporium spp., geotrichum candidum, mucor spp., paeciliomyces spp., penicillium spp., rhizopus spp., rhodotorula spp., scopulariopsis spp., streptomyces spp., and trichosporon cutaneum. there was no apparent evidence that these fungi were associated wi ...19761255918
the fine structure of the endogenous stages of eimeria labbeana. 3. feeding organelles.the fine structure of the feeding organelles of the endogenous developmental stages of eimeria labbeana from the ileal mucosa of the common pigeon, columba livia, is described and compared with similar structures of other species of eimeria. intra-cytoplasmic, membrane-bound vesicles of varying shapes and dimensions, and pinocytotic vesicle, were seen in association with cup-shaped or v-shaped invaginations in early schizonts, early macrogamonts, and macrogametes. deep invaginations, averaging 1 ...19761266286
[evolutionary novelties in the display of pigeon breeds (columba livia var. domestica) as a result of selective breeding by man]. 19761266425
[ultrastructure of pigeon peripheral blood cells].the ultrastructural organization of erythrocytes, thrombocytes and white cells (pseudoeosinophils, eosinophils, basophils, lymphocytes, monocytes) of the peripheral blood was studied in the pigeon columba livia. the specific granules of eosinophils do not contain crystalloid structures characteristic of eosinophilic granules of certain respresentatives of fishes and mammals. specific basophilic granules are of a large size and have homogeneous osmophilic matrix. the ultrastructure of agranulocyt ...19761275717
seasonal study of the adrenal gland of some indian avian species.adrenal glands of eight indian species of birds, namely columba livia, passer domesticus, corvus splendens, acridotheres tristis, acridotheres ginginianus, milvus migrans, francolinus pondicerianus and bubulcus ibis were examined during the sexually active and inactive phases of their annual reproductive cycles. excepting a ginginianus and m. migrans, among members of either sex of the remaining six species the weight of the adrenal gland increases during the period of sexual activity. histologi ...1976135472
peptide specificity of receptors for angiotensin-induced thirst in the pigeon columba livia [proceedings]. 1976190380
transmission of avian pox from starlings to rothchild's mynahs.several wild species of birds, including starlings (sturnus vulgaris), house sparrows (passer domesticus) and pigeons (columba livia) gained access to an aviary housing rothchild's mynahs (leucospar rothchildii) and over 100 additional birds representing a variety of species. six of approximately 15 mynahs became infected with avian pox and all of them died. none of the other birds in the aviary developed lesions. pox virus was isolated from mynah facial lesions on chicken chorioallantoic membra ...197616498876
ventilatory and circulatory o2 convection at 4000 m in pigeon at neutral or cold temperature.awake domestic pigeons, either maintained at 22 degrees c (series i) or acutely exposed at 2 degrees c (series ii), were studied in a hypobaric chamber at 140 m and at various stages during a 4-week exposure to 4000 m. steady-state pulmonary ventilation (vg) and breathing pattern (vt, fr), oxygen consumption (mo2), o2 concentrations and pressures in the arterial (a) and mixed venous blood (v), hematocrit (ht) and acid-base status in arterial blood, systolic blood pressure and heart frequency (fh ...197614365
effects of seasonal and social factors on testicular activity and hormone levels in domestic pigeons.testicular morphology and plasma concentrations of luteinizing hormone (lh), testosterone, progesterone, and estradiol-17beta were compared in paired (n = 8) and unpaired (n = 7) racing pigeons killed in december. the birds were housed mixed together under natural lighting conditions in two unheated lofts which contained no nesting facilities, in kiel (54 degrees n), germany. the paired birds had been paired for at least two months. testicular weights and diameters of tubules were significantly ...1976939963
adrenocorticotropic hormone, glucose and displacement activities in pigeons.the possibility that displacement activities might be consequences of stress-induced humoral responses was investigated. adrenocorticotropic hormone and glucose were injected into the brain ventricles of unrestrained domestic pigeons. acth leads to an increased frequency of yawning and headshaking and glucose to a decrease in arousal. it is concluded that these behavioural responses correspond partly with the displacement activities shown by birds. the role of the cerebrospinal fluid as a mediat ...1976178122
[feral domestic pigeons as a hygienic problem in big cities--the situation in magdeburg]. 1976960806
attempts at infecting ringed turtle doves with virulent trichomonas gallinae.twenty trichomonas -free ringed turtle doves ( streptopelia risoria ) were inoculated per os with the highly virulent jones' barn strain of trichomonas gallinae . none became infected. three f1 females housed together were similarly inoculated with this strain and remained trichomonas -positive for upwards of 182 days. they showed no disease and eventually lost their infections. these three positive females "mated" and laid several six-egg sets in a communal nest. at successive nestings they wer ...197724228964
failure of interocular transfer in the pigeon (columba livia).pigeons were trained on a modified jumping stand to discriminate a circle from a triangle using only one eye. testing with the naive eye revealed no evidence of interocular transfer. this failure of transfer was also observed under more stringent testing using reversal learning. the results are discussed in terms of a selective attention model for panoramic vision.1977203961
parental investment, mate choice, and mate quality.current theory in sexual selection is extended to predict within-sex variability with regard to selectivity towards mates in different mating systems. generally, the sex that invests more in the care of each offspring should be more selective of mates than the sex investing less. within each sex, individuals of low male quality should be less selective than individuals of high quality, but there should be less variation in selectivity among individuals of the sex investing more. when only one se ...1977269407
cholesteryl esters of pigeon (columba livia) aortas as a function of age. 1977299623
light and electron microscopic identification of pituitary cells containing growth hormone and prolactin in the pigeon [columba livia], using the immunoglobulin-enzyme bridge technique. 1977324864
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