Publications

effects of temperature and pco2 on o2 affinity of pigeon blood: implications for brain o2 supply.	bird heads contain paired countercurrent heat exchangers, the ophthalmic retia, which function in brain temperature regulation. blood, cooled by evaporation from the nasal and buccal mucosa and the ocular surfaces, flows to the venous side of each rete and there gains heat from arterial blood flowing countercurrent to it. the cooled arterial blood then flows to the brain. to ascertain whether characteristics of the blood reaching the cooling surfaces and the retia favor o2 and co2 exchange, as w ...	1985	3934989
comparative study on the cardiac actions of bovine parathyroid hormone (1-34).	the cardiac stimulatory effects of bovine parathyroid hormone (1-34) [bpth-(1-34)] were studied on isolated atria and ventricular strips from cobra snakes (naja naja), ducklings (anas platyrhynchos), pigeons (columba livia), japanese quails (coturnix coturnix japonica), laboratory rats (rattus norvegicus), and dogs (canis familiaris). in all atrial preparations, bpth-(1-34) caused positive chronotropism. this suggests that the chronotropic effect of pth is ubiquitous among the terrestrial verteb ...	1986	3940926
auditory intensity discrimination in the pigeon (columba livia) as measured by heart-rate conditioning.		1986	3951560
flight stimulates adrenocortical activity in pigeons (columba livia).	the influence of long-distance flight on corticosterone secretion has been examined in trained racing pigeons. flights of 315-561 min from release sites 115-557 km from the home loft greatly increased the circulating corticosterone concentration in comparison with the levels in nonexercised controls sampled before release or bled in the loft at the times of release or arrival. the increase in corticosterone concentration was unrelated to the distance flown or duration of flight. flights of less ...	1986	3956993
unusual complement activation properties of serum immunoglobulins of the pigeon columba livia.	complement-mediated lysis of mouse erythrocytes (mrbc) by whole pigeon antisera was found to occur in the presence of magnesium ions alone. the underlying basis for this observation was demonstrated to be the ability of igm antibodies to activate the alternative pathway of pigeon complement, whereas igg activates a calcium-dependent pathway possessing an unusually low lytic capacity. in addition to differing from the alternative pathway by requiring both calcium and magnesium ions, the calcium-d ...	1986	3957409
the influence of central infusions on drinking due to peripheral osmotic stimuli in the pigeon (columba livia).	the drinking responses of pigeons infused simultaneously iv (0.334 ml/min) and icv (2 microliters/min) for 15 min with various osmotic solutions were observed during, and for 60 min after, the combined infusions. drinking in response to iv infusion of 0.5 m nacl or 1.0 m sucrose was unaffected by simultaneous icv infusion of 0.15 m nacl, enhanced by icv 0.3 m nacl, inhibited during the infusion of water icv and attenuated by icv infusion of 0.9 m sucrose. drinking in response to iv infusion of 1 ...	1986	3960995
occurrence of yersinia enterocolitica in wild-living birds and japanese serows.	yersinia spp. were isolated from 34 of 500 birds representing nine species. the highest isolation rate, 5 of 21 (23.8%), was found in blue magpies (cyanopia cyanus), followed by pheasants (phasianus colchicus tohkaidi), 5 of 33 (15.2%); gray starlings (sturnus cineraceus), 6 of 57 (10.5%); tree sparrows (passer montanus), 1 of 14 (7.1%); bulbuls (hypsipetes amaurotis), 4 of 57 (7.0%); crows (corvus levailantii or corvus corone), 7 of 117 (6.0%); eastern turtledoves (streptopelia orientalis), 4 o ...	1985	3977310
telencephalic connections of the trigeminal system in the pigeon (columba livia): a trigeminal sensorimotor circuit.	a combination of autoradiography and horseradish peroxidase histochemistry was used to identify telencephalic structures linking the sensory and motor components of the trigeminal system in the pigeon. a direct telencephalic projection from the principal trigeminal sensory nucleus upon the nucleus basalis via the quintofrontal tract was confirmed. nucleus basalis projects upon a belt of neurons within the overlying neostriatum. this region (neostriatum frontale, pars trigeminale: nft) gives rise ...	1985	3988994
variations in ascorbic acid concentrations in the liver, gonads, kidney, and blood serum of feral blue rock pigeon (columba livia gmelin) during the breeding and nonbreeding seasons.	to elucidate the possible involvement of ascorbic acid in gonadal steroidogenesis and role of gonadal steroids on the vitamin's turnover, ascorbic acid levels were quantified in the liver, gonads, kidney, and blood serum in both sexes of the indian feral blue rock pigeon (columba livia gmelin) during the breeding (march to april) and nonbreeding (june to july) seasons. low concentrations were observed during the breeding season and significantly higher cencentrations during the nonbreeding seaso ...	1985	3991426
studies on phosphagen synthesis by mitochondrial preparations.	mitochondrial preparations from muscles of a crab (cancer pagurus), two fish (trachurus trachurus and scyliorhinus canicula) and a bird (columba livia) are able to synthesise, through atp, the phosphagen related to that species. this indicates the presence of a bound phosphagen kinase. addition of creatine kinase and creatine to crab mitochondria results in the synthesis of phosphocreatine. similarly, the addition of arginine kinase and arginine to mitochondrial preparations from the fish and bi ...	1985	4006444
electrocardiogram of the racing pigeon (columba livia domestica).	using standard limb leads electrocardiograms (ecgs) were recorded in 60 pigeons. the greatest amplitude of the p wave was observed in lead ii in the majority of ecgs. the predominant pattern of the p wave was positive in leads i and ii, biphasic (-/+) in lead iii, negative in avr, biphasic (+/-) in avl and positive in avf. a ta wave was observed in 50 out of 60 tracings. wenckebach's phenomenon was observed in three different pigeons. in lead i the qrs pattern was rs or qs. in leads ii, iii and ...	1985	4012029
an unusual case of lead poisoning in a honey buzzard (pernis apivorus).	the diagnosis and treatment of a case of lead poisoning in a honey buzzard (pernis apivorus) are described. presenting signs were diarrhoea and weakness. lead poisoning was suspected after radiography and confirmed by measuring the lead concentration in a venous blood sample. comparison values of venous lead concentrations in healthy racing pigeons (columba livia) were established. a method for the removal of lead shor from the gizzard of birds with a bronchoscope and grasping forceps under fluo ...	1985	4013056
a quantitative approach to cytoarchitectonics. x. the areal pattern of the neostriatum in the domestic pigeon, columba livia f.d. a cyto- and myeloarchitectonical study.	the areal pattern of the neostriatum of the domestic pigeon, columba livia f.d., is described in detail. the map was completed with the help of cyto- and myeloarchitectonical studies during which both qualitative and quantitative methods were applied. the map is divided into 16 areas which are characterized in this paper. most of these areas can be interpreted as being not only structural but also functional units. the areas ne 1, ne 7, and ne 12 represent primary projection fields. the areas ne ...	1985	4014723
experimental transfer of trichomonas gallinae (rivolta, 1878) from white-winged doves to mourning doves.	isolates of trichomonas gallinae (rivolta, 1878) from white-winged doves, zenaida asiatica (l.), were transferred experimentally to young mourning doves, zenaida macroura (l.). twenty-three of 25 mourning doves developed infections with isolates of t. gallinae from 25 white-winged doves. in addition, eight of eight rock doves (columba livia gmelin) were infected with duplicate isolates. all infected recipient birds harbored avirulent isolates except for one mourning dove which died from extensiv ...	1985	4032621
safety and efficacy of clavulanate-potentiated amoxycillin in pigeons (columba livia).	pigeons treated orally with 125 mg clavulanate-potentiated amoxycillin for seven days showed no adverse reactions. the drug had a marked depressive effect on the faecal flora but this had returned to normal 10 days after cessation of treatment. when administered to pigeons with an experimental staphylococcus aureus infection of the feet no clinical response was apparent and there was no evidence of a diminution in the inflammatory process.	1985	4035095
presence of immunoreactive melatonin in different tissues of the pigeon (columba livia).	the distribution of melatonin was studied at midday and midnight in pigeon plasma, pineal, hypothalamus, eyes, harderian glands, and duodenum. tissue samples were homogenized, extracted with chloroform, evaporated, and measured by our melatonin radioimmunoassay (ria). all the extracts gave dilution curves parallel to that of synthetic melatonin and eluted in reverse-phase high-performance liquid chromatography (hplc) as synthetic melatonin indicating that the immunoreactivity was due to endogeno ...	1985	4039280
direction-selective single units in the nucleus lentiformis mesencephali of the pigeon (columba livia).	the receptive field properties of single units within the nucleus lentiformis mesencephali (lm) of the pigeon were studied using electrophysiological methods. previous studies have suggested that the avian lm may be homologous to the nucleus of the optic tract (not) in mammals. single units in the pigeon lm are similar to mammalian not units in that they are direction-selective, mostly for horizontal directions, velocity-selective, have large visual receptive fields and respond preferentially to ...	1985	4054266
emg activity in pectoral and femoral muscles during spinal cord cooling in exercising pigeons.	adult domestic pigeons, with thermodes chronically implanted in the vertebral canal, were trained to walk on a treadmill. in the first series of experiments, emg activity in a pectoral (m. pectoralis) and a femoral muscle (m. biceps femoris) was measured to determine if shivering could occur during exercise. when the spinal cord was cooled (36.2 +/- 0.5 degrees c) during exercise (0.6 km/h), pectoral muscle emg activity increased by 80%, while femoral muscle emg activity did not change significa ...	1985	4059027
ultrastructure of the pineal cells of the homing pigeon columba livia and magnetic fields (first trials).	the homing pigeon columba livia was exposed to uniform 60 hz ac magnetic fields, generated by helmholtz coils with an intensity of 200 mg for 48 hrs. the microscopic studies performed revealed that only some of the pineal cells (between 20 and 30%) seemed to respond to the magnetic stimulation, and showed different ultrastructural morphological changes; the most striking effect was an apparent increase of apocrine secretion to the luminal spaces in the epiphyseal epithelium of this avian species ...	1985	4067285
[relationship between nystagmus and utricular function].	the horizontal neck nystagmus arising in response to angular acceleration was recorded electromyographically in pigeons (columba livia). after bilateral section of the utricular nerves (roumuli utriculi) the nystagmic reactions to the right and to the left remained symmetrical although they were delayed when compared to the reactions of intact animals. unilateral section of the utricular nerves caused asymmetric reactions from the semicircular canals: the nystagmus toward the dissected nerve was ...	1985	4068649
[anti-p1 production in the blood of columba domestica].	after intravenous immunization of six rabbits with washed red cells from a pigeon (columba domestica), anti-p1 of very good quality was obtained after 8-12 injections. the sera indicate human blood cells of type p1 equally well as do anti-p1 of goat (immunized with echinococci cyst fluid).	1985	4084282
effect of oestradiol dipropionate on the immune system of the pigeon, columba livia.	influence of female sex hormone, oestradiol dipropionate on the humoral and cell-mediated immune (cmi) responses of pigeon, columba livia of different age groups and of both sexes were studied. the pigeons were administered with the hormone, immunized with sheep red blood cells (srbc) and rosette forming cell (rfc), haemagglutinin (ha) and migration inhibition (mi) assays carried out on different days post-immunization. the hormone showed a differential effect: while the rfc and ha were enhanced ...	1985	4085675
topographic representation of visceral target organs within the dorsal motor nucleus of the vagus nerve of the pigeon columba livia.	our previous work (katz and karten, '83a j. comp. neurol. 217:31-46 demonstrated that the dorsal motor nucleus of the vagus nerve (dmn complex) in the pigeon is composed of cytoarchitecturally distinct subnuclei that are distinguished by the size, shape, position, and cytochemical characteristics of their constituent neurons. in view of the diversity of target organs innervated by the vagus nerve, we sought to determine whether the subnuclear heterogeneity of the dmn complex is related to the pa ...	1985	4086668
[hexamitiasis in carrier pigeons in the netherlands].	hexamitiasis in carrier pigeons caused by hexamita columbae was reported for the first time in the netherlands. infections tend to occur from april to july in 6-8 week old birds. the patients were affected with diarrhoea, became emaciated and died. mortality may be considerable. parasites may be identified in unstained wet specimens of very fresh droppings. treatment consists in administration of ronidazole during a period from seven to ten days. optimum hygiene should be observed.	1985	4089854
normative data for pigeon vision.	normative data are reported for the visual acuity, luminance-difference threshold and size-difference threshold of pigeons (columba livia). the mean visual acuity was 12.66 c/deg or 2.53 min (n = 54), the mean log luminance-difference threshold was 0.11 (n = 105) and the mean size-difference threshold was 0.94 mm (n = 20).	1985	4090287
[adrenergic neuromuscular junctions in the cerebral arteries of birds].	by means of the histochemical and electron microscopical methods, adrenergic innervation of the middle cerebral artery and its branches have been investigated in three sparrows (passer montanus), blue rock pigeons (columba livia), hens (gallus domestica), hazel-grouses (tetrastes bonasia), large billed crows (corvus levaillantii), ducks (anas domestica) and slaty backed gulls (larus schistisagus). neuromuscular connections in all the birds investigated have similar organizational features. some ...	1985	4091667
[morphologic features of the adaptation of vessels of the renal glomerular complex of testudo horsfeldi gr. and columba livia].	morphological characteristics on adaptive abilities of the glomerular complex vessels in kidneys of 35 tortoises (testudo horsfieldi) is presented under conditions of experimental alimentary dehydration and in intact kidneys of 29 pigeons (columba livia). appearance of transversal and circular anastomoses between the afferent and efferent arterioles of the glomeruli, as well as transformation of their capillaries into nutritional capillaries in the tortoise kidneys under the alimentary dehydrati ...	1985	4091684
grasping in the pigeon (columba livia): final common path mechanisms.	a combination of cinematographic and denervation procedures were used to analyse the mechanisms involved in the adjustment of gape size during grasping in the pigeon. gape size was found to vary directly with seed size and to reflect the operation of two variables, jaw opening velocity and jaw opening duration. effects upon duration are mediated, indirectly, by the effect of seed size upon head height, which, in turn, controls the velocity of head descent. the data suggest that the control of ga ...	1985	4091959
histochemical detection of glycoproteins in the intestinal epithelium of columba livia.	a histochemical investigation was carried out to detect glycoproteins in the epithelium of the small and large intestine, ceca and cloaca (coprodeum) of columba livia. the results showed that the goblet cells of both crypts and villi of the various segments studied presented neutral and acid glycoproteins. acid glycoproteins include sulphoglycoproteins and sialoglycoproteins with predominance of the sulphated components, particularly in the large intestine, ceca and coprodeum. in the striated bo ...	1985	4096398
immunohistochemical localization of prolactin in the pituitary gland of the pigeon, columba livia.		1972	4118344
ependyma & sub-ependyma in the indian pigeon, columba livia & duckling, anas platyrhynchos.		1972	4118888
the effect of kc1, nac1, hydration and dehydration on the subcommissural organ of the domestic pigeon.		1967	4176814
[effect of hormonal agents on the gonads of semi-domestic pigeons].		1974	4215261
tetrameres americana in laboratory pigeons (columba livia).		1969	4244904
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).		1971	4261967
effect of acth on the hypothalamic neurosecretion of the pigeon (columba livia domestica l.).		1966	4285912
effect of thirst and water load on the hypothalamic regulation of the adrenal in the pigeon (columba livia domestica l.).		1966	4290846
effect of the median eminence of the pigeon (columba livia domestica l.) on the regulation of adenohypophysial corticotropin secretion.		1969	4307269
effect of different experimental interventions on the amount of acth in the median eminence of the domestic pigeon.		1969	4317327
an analysis of the crop contents of white carneaux pigeons (columba livia), days one through twenty-seven.		1971	4322783
studies on a "renin-angiotensin" system in the normal and hypophysectomized pigeon (columba livia).		1971	4323879
the effects of hypophysectomy on the metabolism of adrenal steroids in the pigeon (columba livia).		1972	4336117
sleep in the domestic pigeon (columba livia).		1972	4339457
[enzyme histochemical and fine structural observations on the pecten oculi of the pigeon (columba livia) and laughing gull (larus ridibundus)].		1972	4343361
effects of hyper- and hypofunctional states on the zonation of, and in vitro corticosterone production by the adrenocortical tissue in the domestic pigeon.		1972	4345075
effect of ether stress on crf-acth system of the domestic pigeon.		1972	4345076
rhythmic and light-induced changes in levels of pineal 5-hydroxyindoles in the pigeon (columba livia).		1966	4381448
a comparative study of the peroxidases from thyroid glands of pigeon (columba livia domestica) and common myna (acridotheres tristis).		1971	4400978
the effects of dietary protein content on water requirements and ammonia excretion in pigeons, columba livia.		1972	4404574
[the relationship between the so-called voice break and the daily ketosteroid excretion in young pigeons (columba livia domestica)].		1974	4411204
mercury residues in the common pigeon (columba livia) from the jackson, mississippi, area--1972.		1974	4444928
nerves and nerve terminations in the heart of columba livia.		1974	4451283
chromosome homology in birds: banding patterns of the chromosomes of the domestic chicken, ring-necked dove, and domestic pigeon.		1974	4462977
mechanism of action of alpha-chlorohydrin on testes of the domestic pigeon : a confirmation.		1974	4464268
brain mechanisms and feeding behavior in the pigeon (columba livia). ii. analysis of feeding behavior deficits after lesions of quinto-frontal structures.		1973	4520143
polymorphism and the evolution of a continuous breeding season in the pigeon, columba livia.		1973	4522401
ontogeny and localization of -crystallin antigen in the developing pigeon (columba livia) lens.		1972	4560839
[importance of domestic pigeons in human salmonellosis].		1972	4563870
heart rate and blood pressure responses to electrical stimulation of the central nervous system in the pigeon (columba livia).		1973	4579121
ultrastructural and acetylcholinesterase investigations on the pancreas intrinsic innervation of two bird species (columba livia domestica gm. and euodice cantans gm.).		1974	4618821
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.		1972	4640866
[the detection of the domestic pigeon mallophagan bonomiella columbae for the first time in gdr].		1972	4666504
[occurrence of paratanaisia bragai (santos, 1934) freitas, 1959 (trematoda aucotylidae) in domestic pigeons (columbia livia domestica)].		1972	4681326
the organization and projections of the paleostriatal complex in the pigeon (columba livia).		1973	4698909
daily rhythms of plasma corticosterone in the common pigeon, columba livia.		1973	4699365
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.	1973	4702573
opponent-color units in the thalamus of the pigeon (columba livia).		1973	4719087
neural connections of the "visual wulst" of the avian telencephalon. experimental studies in the piegon (columba livia) and owl (speotyto cunicularia).		1973	4721779
connections of the anterior commissure in the pigeon (columba livia).		1973	4723065
de lange characteristics for the fresh-water turtle chrysemys picta picta, and the pigeon columba livia.		1973	4746984
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 ...	1973	4762113
brain mechanisms and feeding behavior in the pigeon (columba livia). i. quinto-frontal structures.		1973	4765854
[new data on visual projections in the pigeon (columba livia)].		1973	4770387
injurious effect of cadmium on testis of domestic pigeon & its prevention by zinc.		1973	4782372
[following carrier-pigeons in helicopter. ii].		1973	4792590
comparison of differential reinforcement of low rates (drl) performance in pigeons (columba livia) and crows (corvus brachyrhynchos).		1974	4823247
thalamic organization of the retino-thalamo-hyperstriatal pathway in the pigeon (columba livia).		1974	4827866
[ultrastructural and functional studies of the pineal organ in the pigeon (columba livia)].		1969	4902166
[studies on types of salmonella typhimurium in domestic pigeons in schleswig-holstein and their possible epizootological significance].		1971	4935401
[treatment attemts of a massive salmonella typhimurium infection in flock of army carrier pigeons].		1971	4950674
[the cerebral ventricles of the fowl (gallus domesticus), pigeon (columba livia) and duck (anas boschas domestica) demonstrated with the help of the plastic corrosion technique].		1967	4970158
neurohypophysial hormones and sexual behavior in males of the domestic fowl (gallus domesticus l.) and the pigeon (columba livia gmel.).		1972	5009669
a polygraphic and behavioral study of sleep in the pigeon (columba livia).		1972	5026409
formation and utilization of acetoacetate and d-3-hydroxybutyrate by various tissues of the adult pigeon (columba livia).		1972	5075781
localization of visual structure in the diencephalon of pigeon (columba livia).		1972	5079258
effect of hygromycin-b on pigeons (columba livia) with and without trichomonas gallinae.		1972	5079869
effect of thyroidectomy & exogenous thyroxine on hypothalamo-hypophysial complex & gonads of indian pigeon, columba livia gmelin.		1971	5092726
naturally occurring clinical newcastle disease in the racing pigeon (columba livia).		1971	5106215
grass and subcellular distribution of cesium-137 in pigeon (columba livia) tissues with special reference to muscles.		1971	5150019
effect of malonate, succinate and glucose, in vivo, on the uptake of cesium-137 by pigeon (columba livia) muscles.		1971	5150020
effects of oestrogen on the differentiation of some reproductive behaviours in male pigeons (columba livia).		1971	5150475
the distribution of mallophaga on the domestic pigeon (columba livia).		1971	5161201
electrophysiology of contralateral and ipsilateral visual projections to the wulst in pigeon (columba livia).		1971	5161304
the endocrine basis of breeding behaviour in the feral pigeon (columba livia). i. effects of exogenous hormones on the pre-incubation behaviour of intact males.		1969	5349579
hormonal control of courtship behaviour in the pigeon (columba livia).		1969	5370958
on a new species of the genus paronchocerca from rock pigeon columba livia.		1969	5393021
[a new trichostrongylide, parasite of the domestic pigeon in senegal].		1969	5408493
telencephalic projections of the nucleus rotundus in the pigeon (columba livia).		1970	5459211
the effects of wulst ablations on color, brightness and pattern discrimination in pigeons (columba livia).		1970	5459214
[ultrastructure of the median eminence of the pigeon (columba livia domestica) in various experimental conditions].		1970	5495352