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acetylcholinesterase-containing nerve cells and their distribution in the pineal organ of the goldfish, carassius auratus. 19734778596
pituitary and plasma gonadotrophin levels and spermatogenesis in the goldfish carassius auratus after methallibure treatment. 19734761678
effects of magnesium pemoline on the habituation of an innate fear response in carassius auratus. 19734761070
ddt inhibition of active chlorophenol red transport in goldfish (carassius auratus) renal tubules. 19734753270
lactate dehydrogenase and malate dehydrogenase isozyme patterns in tissues of temperature-acclimated goldfish (carassius auratus l.). 19734747092
[scanning electron microscopy of olfactory receptors in carassius auratus]. 19734735905
unconditional stimulus intensity and cardiac conditioning in the goldfish (carassius auratus). 19734732424
[scanning electron microscopy of the olfactory glands in the gold fish (carassius auratus)]. 19734728852
secretory activity of nucleus preopticus of the goldfish (carassius auratus gibelio bloch) in the annual cycle. 19734722075
habituation and sensitization of an innate fear response in carassius auratus. 19734704760
the distribution and tissue retention of mercury-203 in the goldfish (carassius auratus). 19734694942
pavlovian analysis of avoidance conditioning in the goldfish (carassius auratus). 19734684967
the effects of temperature and other factors upon the establishment and survival of pomphorhynchus laevis (acanthocephala) in goldfish, carassius auratus. 19724680538
[use of alburnus alburnus alborella in evaluation of the toxicity of sewage. i. comparative research with respect to carassius auratus]. 20064670269
[biochemical study of radioactive sulfate compounds in the antehypophysis of the cyprinid (carassius auratus l.) after 35 so 4 na 2 injection]. 19724663950
the effect of temperature acclimation upon succinic dehydrogenase activity from the epaxial muscle of the common goldfish (carassius auratus l.)--ii. lipid reactivation of the soluble enzyme. 19724662575
the effect of temperature acclimation upon succinic dehydrogenase activity from the epaxial muscle of the common goldfish (carassius auratus l.)--i. properties of the enzyme and the effect of lipid extraction. 19724662574
feedback effects of thyroxine in goldfish carassius auratus with an autotransplanted pituitary. 19724662044
behavioral changes in the goldfish, carassius auratus, produced by treatment with nerve growth factor. 19724658586
habituation, reinstatement and recovery of predatory responses in two species of teleosts, carassius auratus and macropodus opercularis. 19724644155
the effects of calcium and magnesium on sodium fluxes through gills of carassius auratus, l.1. removal of calcium from carassius either with chelating agents or by adaptation to deionized water increased sodium influx through the gills twofold.2. treatment of fish with chelating agents increased sodium outflux, whereas adaptation to deionized water reduced sodium outflux. the effects on outflux do not appear to result from calcium removal.3. addition of calcium (2-20 mm) reversed the effects on influx of chelating agents and of adaptation to deionized water.4. magnesium (2-10 mm) was w ...19724622716
plasma cortisol concentrations in two teleost fishes, anguilla anguilla l. and carassius auratus l.: a comparison of two assay systems. 19744608521
the result of inoculation of mycobacterium leprae in the goldfish (carassius auratus). 19744599823
synaptic ultrastructure in the tangential nucleus of the goldfish (carassius auratus). 19734574401
effects of epinephrine on the activity level and on the formation of learning of a maze in "carassius auratus". 20134470327
[nuclear function during early development of remote fish hybrids].the participation of paternal genome was studied in the development of remote hybrids obtained as a result of artificial insemination of the loach (misgurnus fossilis) eggs by the sperm of aquarial cyprinids (brachydanio rerio, danio malabaricus, barbus tetrazona, razbora heteromorpha, carassius auratus) and cobitids (acanthophtalmus kuhlii). the hybrids obtained differed at the stage of hatching both from each other and from the loach by some morphological features. to study the function of het ...19744469618
[cytophysiological changes in pituitary gland (pars intermedia) of carassius auratus l. (teleostei cyprinidae) during adaptation to hyperosmotic environment]. 20064469408
thermoacclimatory variation in the haemoglobin systems of goldfish (carassius auratus) and rainbow trout (salmo gairdneri). 19744443737
study of rna transfer from nucleus to cytoplasm in early loach (misgurnus fossilis l.) and hybrid loach female times goldfish (carassius auratus auratus) male embryos. 19744428216
masking of tones by noise for the goldfish (carassius auratus). 19744426992
effects of ethanol and sodium phenobarbital on conflict behavior of goldfish (carassius auratus). 20154418688
effects of hypothalamic and thalamic lesions on prolactin secretion in goldfish (carassius auratus). 19744413142
acoustic stimulation of the ear of the goldfish (carassius auratus). 19744411820
the effects of cooling on electrical responses of goldfish (carassius auratus) central nervous system. 19724404513
effects of vertebrate insulins upon serum ffa and phospholipid levels in the goldfish, carassius auratus linnaeus. 19724402086
temperature-induced changes in sodium transport and na+-k+-adenosine triphosphatase activity in the intestine of goldfish (carassius auratus l.). 19714399669
the concentration of adrenaline and noradrenaline in the brain and the heart of the goldfish, carassius auratus. 19674382411
[influence of temperature on ovarian adenyl cyclase and its hormonal stimulation. comparative study in the rat and in a teleostean fish (carassius auratus)]. 19744375497
plasma concentrations of cortisol in hypophysectomized and sodium chloride-adapted goldfish (carassius auratus l.). 19744374488
in vitro response of goldfish (carassius auratus l.) dermal melanophores to cyclic 3',5'-nucleotides, nucleoside 5'-phosphates and methylxanthines. 19744373483
lack of vitamin d3 synthesis by goldfish (carassius auratus l.). 19744373206
partial purification of the crowding factor from carassius auratus and cyprinus carpio. 19744362349
localization and metabolism of 1,2- 3 h-vetamin d 3 and 26,27- 3 h-25-hydroxycholecalciferol in goldfish (carassius auratus l.). 19724342453
[hormonal stimulation of adenyl cyclase activity of the ovary of a teleost fish, the goldfish (carassius auratus l.)]. 19704319719
[hormonal control of water turnover and balance in the intact and hypophysectomized fresh water teleost carassius auratus]. 19704316333
temperature adaptation and the phospholipids of membranes in goldfish (carassius auratus). 19704315097
histological changes in interrenal tissue of the goldfish, carassius auratus, following x-irradiation. 19664290427
environmental temperature and the body fluid system of the fresh-water teleost v. plasma electrolyte levels and branchial microsomal (na+-k+) atpase activity in thermally acclimated goldfish (carassius auratus). 19744281368
effects of alloxan, streptozotocin or d-mannoheptulose upon serum free fatty acid and serum glucose levels in goldfish, carassius auratus l. 19724264729
properties of muscle phosphofructokinase of cold- and warm-acclimated carassius auratus. 19714257181
involvement of gonadotropin and steroid hormones in the spermiation of the goldfish (carassius auratus). 19694238929
[autoradiographic study of the anterior pituitary gland of carassius auratus after injection of d-glucose-6-h3]. 19664227873
[origin of transbranchial electric potential difference in the goldfish carassius auratus. importance of ca++ ion]. 20144217665
a stochastic locomotor control model for the goldfish (carassius auratus). 19744212902
[hormonal stimulation of ovarian adenyl cyclase in the rat and a teleost fish (carassius auratus): influence of adenosine triphosphate concentration]. 19744212669
[5-hyroxytryptamine in the central nervous system of the gold- fish (carassius auratus)]. 20144177370
metabolism iodine and thyroid hormone synthesis in the goldfish, carassius auratus l. 19654159949
effect of hypothalamic extracts on prolactin secretion in the goldfish, carassius auratus l. 19744156202
death induced by injection stress in cold-acclimated goldfish, carassius auratus. 20144147938
carotenoid pigments in goldfish (carassius auratus l.). vi. the effect of acth and phenylthiourea on the discoloration and the carotenoid metabolism. 19734147807
effects of thermal acclimation on physiological responses to handling stress, cortisol and aldosterone injections in the goldfish, carassius auratus. 19734146633
intestinal peroxisomes in the goldfish (carassius auratus). 19734146111
the effect of prolactin on water influx in isolated gills of the goldfish, carassius auratus l. 19734145520
effects of catecholamines upon serum ffa levels in normal and diabetic goldfish, carassius auratus l. 19734145506
intraneuronal transport in the hypothalamoneurohypophysial system of the goldfish (carassius auratus). 19734120325
feedback effects of thyroxine on the hypothalamus and pituitary of goldfish, carassius auratus. 19714108167
isolation and partial characterization of immunoglobulins of goldfish (carassius auratus) and carp (cyprinus carpio). 19714100986
validation of radioimmunoassay systems for the measurement of 11-keto- and 11 beta-hydroxytestosterone in teleost blood.highly specific antisera for 11-keto- and 11 beta-hydroxytestosterone have been raised in sheep. assay systems for the simultaneous measurement of 11-ketotestosterone, 11 beta-hydroxytestosterone, testosterone, progesterone and estradiol-17 beta were validated for ictalurus nebulosus plasma and carassius auratus serum. in males of both species 11-ketotestosterone and testosterone were the major steroids detected. in females, testosterone and estradiol-17 beta were the predominant steroids measur ...19854092434
extracellular osmiophilic oval bodies in the vagal and facial lobes of carassius auratus (teleostei-cyprinidae).during the study of ultrathins sections of the vagal lobes and the facial lobe of carassius auratus (teleostei cyprinidae), by electron microscopy, extracellular oval or discoidal, very osmiophilic structures were found in the neuropil of the lobes. the structures measured approximately 73 nm long 58 nm wide, and 29 nm thick and were located within the extracellular spaces surrounding some glial and neural processes; they were closely apposed to the external membrane of these cells, sometimes fo ...19854086810
further observations on the presence of wandering phagocytes within the teleostean retina.a previous report by this author has noted the presence of wandering phagocytes at the photo-receptor-retinal epithelial interface in five teleostean species. a further 5 species have now been investigated by electron microscopy and again all specimens examined consistently show the presence of this population of phagocytes. the new species studied are the goldeye (hiodon alosoides), the yellow eel (anguilla anguilla), the archer fish (toxotes jaculatrix), the goldfish (carassius auratus) and th ...19854073522
aromatase and 5 alpha-reductase in the teleost brain, spinal cord, and pituitary gland.the distribution of aromatase and 5 alpha-reductase was investigated in the brain, spinal cord, and pituitary of adult goldfish (carassius auratus) and toadfish (opsanus tau) of both sexes. tissue homogenates were incubated with [3h]androstenedione in the presence of an nadph-generating system and, following validation of assay conditions, radiolabeled products (estradiol, estrone, 5 alpha-androstanedione), were measured as an index of enzyme activity. neuroendocrine tissue of both species produ ...19854065533
the effect of temperature- and oxygen-acclimation on phospholipids of goldfish (carassius auratus l.) brain mitochondria.goldfish (carassius auratus l.) were temperature- and oxygen-acclimated and the composition of the phospholipids and their acyl groups in brain mitochondria was determined. the proportion of ethanolamine to choline phospholipid was greater while the plasmenyl ethanolamine value (p-gpe/d- + p-gpe) was lower at the low acclimation temperature. for the ethanolamine glycerophospholipids, a rise in the ratio n-6/n-3 fatty acyl groups occurred with cold acclimation. no significant change in the ratio ...19854058656
erythrocytic magnesium in freshwater fishes.erythrocytic magnesium in rainbow and speckled trout (salmo gairdneri, salvelinus fontinalis) carp (cyprinus carpio) and goldfish (carassius auratus) was examined by correlation analyses involving weight, hemoglobin content, plasma magnesium, erythrocytic sodium, potassium, calcium, chloride and unidentified anion concentration and chloride equilibrium potential, and in relation to possible diurnal and seasonal variation as well as with respect to constant, diurnally cycling and progressively in ...19854046640
peripheral and central oculomotor organization in the goldfish, carassius auratus.peripheral and central oculomotor organization was studied in the goldfish. the sizes of the extraocular muscles were quantified by counting the fibers contained in a given muscle and by area measurements of the cross-sectional surfaces. all the muscles were of approximately similar size. kinematics were determined by electrical stimulation of a given muscle. the macroscopic appearance and kinematics of the muscles had the characteristics of other lateral-eyed animals (e.g., rabbit). locations o ...19854044944
topographic and laminar organization of the vagal gustatory system in the goldfish, carassius auratus.the large majority of intraoral taste buds in goldfish are located on the gill arches and on the palatal organ, a muscular organ situated on the roof of the mouth. these taste buds are innervated by branches of the vagus nerve which terminate in a laminated vagal lobe, itself being an enlargement of the special visceral sensory column of the medulla. the tracer horseradish peroxidase (hrp) was used to determine the connectivity of the various branches of the vagus nerve that innervate the oropha ...19854044910
latent inhibition experiments with goldfish (carassius auratus).evidence of latent inhibition was sought in a series of experiments with goldfish. in experiment 1, goldfish were given nonreinforced preexposure to a color that subsequently predicted shock in an activity conditioning situation; their performance did not differ from that of control animals preexposed to a markedly different color. in experiment 2, a group of goldfish given nonreinforced preexposure to a tone and an unstimulated control group were trained in an appetitive situation, with the ton ...19854042616
effects of cytochalasin b on steroid-induced oocyte meiosis and centrifugally induced nuclear movement in the goldfish carassius auratus.in goldfish, 17 alpha, 20 beta-dihydroxyprogesterone (dhp) induced oocyte nucleus or germinal vesicle migration (gvm) and dissolution (gvd) in a dose-related fashion. administration of cytochalasin b (cb) in the presence of dhp inhibited the steroid-induced gvm and gvd after 24 and 48 h of incubation. the presence of cb alone, at concentrations below 25 micrograms/ml, had no effect on gvm or gvd. furthermore, cb, either alone or in combination with dhp, elicited significant increases in follicul ...19854041968
comparative neurotoxicity of tubulin-binding drugs: inhibition of goldfish optic nerve regeneration.intraperitoneal or intraocular (io) injection of tubulin-binding drugs in goldfish, carassius auratus l., inhibited axonal regeneration or restoration of functional synapses in optic axons following optic nerve crush. one eye was used to detect effects on regeneration and the other was kept intact to detect effects on maintenance of established optic circuits. regeneration was assessed by measuring the time to reappearance of a visually evoked branchial suppression response. three drugs, vincris ...19854024120
involvement of gonadotrophin and steroid hormones in spermiation in the amago salmon, oncorhynchus rhodurus, and goldfish, carassius auratus.effects of intraperitoneal injections of chum salmon gonadotrophin (sga) and various steroid hormones (17 alpha, 20 beta-dihydroxy-4-pregnen-3-one; 17 alpha,20 beta-diohprog, 17 alpha-hydroxy-progesterone, testosterone, 11-ketotestosterone) on the induction of in vivo spermiation were examined in nonspermiating amago salmon (oncorhynchus rhodurus) and goldfish (carassius auratus). a single injection of sga to amago salmon and two successive injections to goldfish induced strong spermiation respo ...19854018553
polycystic kidney disease in goldfish (carassius auratus) from hamilton harbour, lake ontario, canada.severe kidney enlargement was observed in 6.3% (5 of 80) of goldfish collected from a heavily polluted industrial basin. externally the fish had generalized swelling and abdominal distension. the kidneys contained numerous large, clear, fluid-filled cysts (polycystic) that ranged in size from microscopic to 4 cm in diameter. affected kidneys had a wide range of histological changes-including the presence of large multiple cysts that caused severe distension and compression of normal renal tissue ...19854002536
the effects of temperature- and oxygen-acclimation on phospholipids of goldfish (carassius auratus l.) brain microsomes.brain microsome phospholipids and their acyl groups, from temperature and oxygen acclimated goldfish, were investigated. at the lower acclimation temperature (5c) the proportion of ethanolamine- to choline-glycerophosphatides (gpe/gpc) was increased, and the proportion of phosphatidal ethanolamine value decreased. a rise in the n-6/n-3 fatty acyl group also occurred in cold acclimation. irrespective of acclimation temperature, 25 degrees c or 5 degrees c, a partial replacement of gpc by gpe occu ...19854000392
the structure of the kidney from the freshwater teleost carassius auratus.the structure of the kidney of the crucian carp (carassius auratus; a freshwater teleost, cypriniformes) was studied by means of reconstruction from serial paraffin and semithin sections. in c. auratus, the wolffian duct traverses the entire kidney. at various levels collecting ducts of different length and thickness join the wolffian duct at right angles. each collecting duct accepts a large number of connecting tubules, which are established by the joining of many nephrons. a regular pattern c ...19853985356
elevations in gonadotrophin concentrations and milt volumes as a result of spawning behavior in the goldfish.in many male mammals and birds, exposure to sexual stimuli results in acute elevations of circulating luteinizing hormone (lh) and testosterone (t); a similar phenomemon has now been observed in the male goldfish (carassius auratus). mature males placed with either a receptive female or stimulus pairs of spawning goldfish had gonadotrophin (gth) concentrations and expressible milt (sperm) volumes that were significantly greater than those of males kept in all-male groups. this stimulatory effect ...19853972238
localization of telencephalic regions concerned with habituation of cardiac and ventilatory responses associated with arousal in the goldfish (carassius auratus).goldfish (carassius auratus) were presented with a "light-on" stimulus at 2-min intervals, and their cardiac and ventilatory responses were monitored. normal fish, fish with sham operations for telencephalic lesions, and fish with bilateral electrolytic lesions of the telencephalon (anterior commissural and posterior telencephalic groups) were compared for responsiveness and habituation to regularly presented stimuli. there was no evident difference in responsiveness between the four groups, tho ...19863954879
attempts to train goldfish to respond to magnetic field stimuli.two different conditioning procedures, one appetitive and the other aversive, were used in separate attempts to demonstrate response to magnetic fields in the goldfish, carassius auratus. our results lead us to question those of an orientation experiment by becker, although we recognize the possibility that goldfish may be sensitive primarily to magnetic field direction rather than intensity and that their directional sensitivity may be evidenced most readily by orientation in the field.19863951559
seasonal variations in body growth rates and circulating levels of growth hormone in the goldfish, carassius auratus.several times throughout the year, changes in serum growth hormone (gh) levels over a 24-h period were determined in goldfish maintained under photoperiods and temperatures simulating natural (edmonton) environmental conditions. in the goldfish a reproducible daily rhythm in circulating gh levels was not present at any time of the year. the average serum gh level over the daily sampling period and the instantaneous relative growth rate in goldfish sampled at the various times of the year were al ...19863950566
anomalous behavior of goldfish igm heavy chain in sodium dodecylsulfate polyacrylamide gel electrophoresis.by sodium dodecylsulfate polyacrylamide gel electrophoresis, the heavy chain of the serum immunoglobulin (igm) of the goldfish (carassius auratus) differs not only from other studied vertebrate serum igm heavy chains, but also from other vertebrate lymphocyte membrane igm heavy chains including those from the goldfish itself. this difference, an increase in apparent mr of approximately 5000, was investigated by assessing in comparison with the igm heavy chain of human and rainbow trout (salmo ga ...19853931966
influences of catecholamines on growth hormone release in female goldfish, carassius auratus.the influence of catecholamines on growth hormone (gh) release in female goldfish was investigated by monitoring serum gh levels following injections of drugs known to alter catecholamine synthesis and neural activities. intraperitoneal (i.p.) injection of 6-hydroxydopamine, a catecholaminergic neurotoxin, or alpha-methyl-p-tyrosine, a catecholamine synthesis inhibitor, decreased serum gh levels. intraperitoneal injection of l-beta-dihydroxyphenylalanine (l-dopa) increased serum gh concentration ...19853925362
urotensin ii-immunoreactive neurons in the caudal neurosecretory system of freshwater and seawater fish.antiserum generated against synthetic urotensin ii of the goby, gillichthys mirabilis, was used to localize urotensin ii in the caudal neurosecretory system in six species of freshwater teleosts: cyprinus carpio, carassius auratus, oreochromis mossambicus, oreochromis niloticus, salmo gairdneri and plecoglossus altivelis, and six species of seawater teleosts: acanthogobius flavimanus, pagrus major, parapristipoma trilineatum, trachurus japonicus, seriola dumerili and seriola quinqueradiata. in t ...19853884162
effect of insulin on meiosis reinitiation induced in vitro by three progestogens in oocytes of the goldfish (carassius auratus).three progestogens were tested for their ability to elicit meiosis reinitiation as evidenced by germinal vesicle dissolution (gvd) in goldfish (carassius auratus) follicle-enclosed oocytes in vitro. in two independent experiments 17 alpha-20 beta-dihydroxyprogesterone (dhp) was most active followed in turn by 17 alpha-hydroxyprogesterone (hp) and progesterone (p). values of the effective dose for a 50% response for gvd induced by p and hp were significantly reduced by the addition of na-insulin, ...19853880712
effects of ph on in vitro ovulation of goldfish (carassius auratus) oocytes.the in vitro effects of ph on goldfish (carassius auratus) ovulation were investigated. final oocyte maturation and follicular detachment were induced in vivo in gravid goldfish by hcg injections and elevated holding temperatures. females were biopsied to determine the time of germinal vesicle breakdown and when oocytes should be removed for in vitro incubations. prior to ovulation, the ovaries were removed, dissected and mature intrafollicular oocytes were incubated in media of varying ph (7.3- ...19853863880
serial ablations of the telencephalon and avoidance learning by goldfish (carassius auratus).simultaneous bilateral ablation of the teleost telencephalon was confirmed to dramatically impair the retention, extinction, and "reversal learning" of a preoperatively learned instrumental avoidance response in a shuttle box. the focus of the experiment was on whether two-stage serial unilateral ablations of the teleost telencephalon would ameliorate the effects seen following one-stage bilateral ablation and whether such amelioration would be a function of the fish's experiences between the st ...19853843724
effect of rest deprivation on motor activity of fish.the rest-activity behavior of two fish species, cichlosoma nigrofasciatum and carassius auratus kept under 12-h light-12-h dim condition was investigated. rest and activity were determined from continuous time-lapse video recordings. three states were discriminated based on the degree of motor activity. both species exhibited a clear rest-activity rhythm with activity predominating during the light period. 'rest deprivation' was carried out in perch during the habitual dim period by exposing the ...19853837116
difference in the lethal effects of carcinogens/mutagens among three cultured goldfish (carassius auratus) cell lines. 19853834097
[experimental morphologic studies of the retina of the goldfish (carassius auratus l.) after prolonged exposure to light and darkness]. 20063827474
influence of isolation stress and inhibited protein biosynthesis on learning and memory in goldfish.goldfish, carassius auratus auratus l. (pisces, cyprinidae), were trained by different kinds of training procedures under the influence of cycloheximide or puromycin, two inhibitors of the protein biosynthesis. after active avoidance training in a shuttle box an apparent amnesia was found only when the fish were exposed to a one day lasting isolation stress prior to training. if the animals were accustomed to isolation over a period of 20 days the inhibitors did not affect memory formation. afte ...20133823175
retinal topography in the optic tract of adult goldfish.the present study was aimed at determining how transformations in fiber order establish a retinal topography in the optic tract of adult carassius auratus. horseradish peroxidase was applied to the optic nerve or retina, and the pathways of labeled axons originating from retinal annuli or wedges were analysed in reconstructed serial-sections and wholeamounts of the optic pathway. the age-related fiber order of the optic tract involves a rotation of the optic pathway that begins near the chiasm, ...19863822125
acute toxicity of nitrofurazone to channel catfish, ictalurus punctatus, and goldfish, carassius auratus. 19873814851
characteristics of a testosterone-estradiol binding globulin (tebg) in goldfish serum.neuroendocrine tissues in teleost fish aromatize androgen to estrogen at extraordinarily high rates. as part of a project in which we are studying the dynamics of sex steroid uptake, metabolism, and receptor binding in goldfish (carassius auratus) brain and pituitary, we have identified and characterized a sex-steroid-binding component of serum. this protein has been designated a testosterone-estradiol-binding globulin (tebg) since it bound testosterone (t) and estradiol-17 beta (e2) with high a ...19863814697
two distinct mechanisms mediating interocular transfer in the goldfish (carassius auratus)?it is known that the postoptic commissures mediate the interocular transfer of visual discriminations in fish. our experiments demonstrated that information relating to shape crosses in one of these commissures, the horizontal, whereas a completely separate commissure, the minor, mediates the transfer of information relating to color. such a clear distinction provides a valuable model for the further study of interhemispheric phenomena.19863770123
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