Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| sodium exchanges in goldfish (carassius auratus l.) adapted to a hypertonic saline solution. | 1969 | 5786835 | |
| n-acetylhistidine metabolism in the brain, heart and lens of the goldfish, carassius auratus, in vivo: evidence of rapid turnover and a possible intermediate. | 1969 | 5793512 | |
| biochemical changes of muscle proteins in goldfish (carassius auratus) during thermal acclimatization. | 1969 | 5800111 | |
| the effect of thermal acclimation upon brain acetylcholinesterase activity of carassius auratus and fundulus heteroclitus. | 1969 | 5801495 | |
| [taste thresholds and training of the taste differentiation capacity in the goldfish (carassius auratus)]. | 1969 | 5814788 | |
| inertial guidance system in the orientation of the goldfish (carassius auratus). | 1969 | 5816076 | |
| the twenty-four-hour seminal hydration response in goldfish (carassius auratus). i. sodium, potassium, calcium, magnesium, chloride and osmolality of serum and seminal fluid. | 1969 | 5817799 | |
| some experiments on the oxygen consumption of goldfish (carassius auratus l.) in relation to swimming speed. | 1965 | 5826307 | |
| a note on water balance in the goldfish, carassius auratus l., during lethal heat shock. | 1965 | 5829178 | |
| acute toxicity and elimination of phenol injected into fish (carassius auratus l.). | 1965 | 5844191 | |
| development of intestinal damage after x-irradiation and h3-thymidine incorporation into intestinal epithelial cells of irradiated goldfish, carassius auratus, at different temperatures. | 1965 | 5846634 | |
| eimeria aurati n. sp. (protozoa:eimeriidae) from goldfish (carassius auratus) in north america. | 1965 | 5859663 | |
| effect of whole-body irradiation on the preoptico-hypophyseal neurosecretory system and the hypophysis of the goldfish carassius auratus l. | 1966 | 5921594 | |
| effects of whole-body irradiation on the adrenal of the goldfish carassius auratus l. | 1966 | 5941159 | |
| the energy relations of carassius auratus l. ii. the effect of food, crowding and darkness on heat production. | 1966 | 5943925 | |
| toxicity of dimethyl sulphoxide to the goldfish, carassius auratus. | 1966 | 5964574 | |
| an electron microscope study of the columnar epithelial cell in the intestine of fresh water teleosts: goldfish (carassius auratus) and rainbow trout (salmo irideus). | 1966 | 5973655 | |
| [comparison of the absorption values of various drugs in carassius auratus fish and in rats]. | 1966 | 6004886 | |
| electrophysiological studies of the olfactory system of the goldfish, carassius auratus l. i. modification of the electrical activity of the olfactory bulb by other central nervous structures. | 1967 | 6033836 | |
| retinomotor rhythms in the goldfish, carassius auratus. | 1967 | 6043620 | |
| protein patterns of the pituitary gland of goldfish, carassius auratus, during dietary controlled gonadal regression. | 1967 | 6049984 | |
| electrophysiological studies of the olfactory system of the goldfish, carassius auratus l. ii. response patterns of the olfactory bulb neurones to chemical stimulation and their centrifugal control. | 1967 | 6049986 | |
| electrophysiological studies of the olfactory system of the goldfish, carassius auratus l. 3. effects of sex hormones on olfactory activity. | 1967 | 6049988 | |
| a note on the effects of hypophysectomy on the mucous cells of the goldfish, carassius auratus l. | 1967 | 6064670 | |
| central connections of the olfactory bulb in the goldfish, carassius auratus. | the central connections of the goldfish olfactory bulb were studied with the use of horseradish peroxidase methods. the olfactory bulb projects bilaterally to ventral and dorsolateral areas of the telencephalon; further targets include the nucleus praeopticus periventricularis and a caudal olfactory nucleus near the nucleus posterior tuberis in the diencephalon, bilaterally. the contralateral bulb and the anterior commissure also receive an input from the olfactory bulb. contralateral projection ... | 1984 | 6084554 |
| lethal potassium dichromate and whitening (blankophor) exposure of gold fish (carassius auratus); chromium levels in gills. | 1981 | 6112100 | |
| adrenergic and cholinergic responses of the isolated heart of the goldfish. carassius auratus. | 1981 | 6117401 | |
| effects of inhibitors of monoamine oxidase activity in goldfish (carassius auratus) brain in vitro. | 1981 | 6118229 | |
| branchial and renal (na+/k+) atpase and carbonic anhydrase activities in a eurythermal freshwater teleost, carassius auratus l. | 1. plasma sodium and chloride levels were determined in goldfish, carassius auratus l., following acclimation to 5, 15, 25 and 35 degrees c. carbonic anhydrase and (na+/k+)-stimulated atpase activities of gill and kidney were also assayed at both acclimation temperature and 41 degrees c. 2. consistent with earlier findings this eurythermal species exhibits more variation in plasma composition with temperature than do the more stenothermal salmonids. seasonal changes were also observed. 3. despit ... | 1982 | 6121644 |
| monoamine oxidase activity in several tissues of the goldfish. carassius auratus. | 1. monoamine oxidase (mao) was determined fluorometrically in male goldfish tissues, and the effects of specific inhibitors determined. 2. mao activity in kidney greater than intestine greater than pancreas greater than brain approximately liver greater than testis. apparent michaelis constant (km) was higher in the first three and lower in the last three tissues. 3. specific mao type a inhibitors (harmaline, clorgyline) were much more effective than a type b inhibitor (deprenyl) in reducing mao ... | 1982 | 6122531 |
| nitrogen metabolism in goldfish, carassius auratus (l.) activities of amidases and amide synthetases in goldfish tissues. | 1. activities of asparagine synthetase, asparaginase, glutamine synthetase and glutaminase have been determined in red muscle, white muscle, brain, kidney, liver and gills of goldfish. 2. muscle and brain show a capacity for net amide synthesis, while liver and gills are capable of both amide synthesis and degradation. 3. these results are consistent with the hypothesis that amide synthesis and degradation functions as a mechanism controlling tissue ammonia levels and ammonia excretion rates. | 1982 | 6123404 |
| [immunocytochemical distribution of somatostatin in the forebrain of two teleosts, the goldfish (carassius auratus) and gambusia sp (author's transl)]. | using immunofluorescence somatostatin was localized in the forebrain of the goldfish and gambusia. immunoreactive cell bodies were detected in the nucleus preopticus periventricularis (npp), the nucleus lateralis tuberis (nlt) and a dorsomedial nucleus at the level of the posterior nucleus anterioris periventricularis (napv) and of the rostral part of the nucleus ventromedialis thalami (nvm). in the pituitary, immunoreactive terminals were restricted at the proximal pars distalis. | 1982 | 6124310 |
| in vivo and in vitro effects of temperature on monoamine oxidase activity in brain and other tissues of the goldfish. carassius auratus l. | 1. the maximum velocity (vmax) and apparent michaelis constant (km) of brain and liver monoamine oxidase (mao) in goldfish were different in fish acclimated to 22 degrees c and to 7 degrees c ambient temperature. 2. in brain, vmax and km were dependent upon incubation temperature, but both parameters were lower in 7 degrees c, adapted fish over most of the incubation temperature range. 3. the values obtained for km showed a plateau at incubation temperatures at and below 25 degrees c for warm wa ... | 1982 | 6128171 |
| similar antagonism of morphine analgesia by mif-1 and naloxone in carassius auratus. | prolyl-leucyl-glycinamide (mif-1), the c-terminal tripeptide of oxytocin, and naloxone were administered intracranially (ic) to goldfish (carassius auratus) in doses of 0.001, 0.01, 0.1, 1.0 and 10.0 mg/kg and compared to a diluent control group for their ability to reduce the effects of morphine (30 mg/kg ic) in an assay measuring analgesia to electric shock. threshold levels of pain were determined by the voltage necessary to produce an agitated swimming response (asr). both mif-1 and naloxone ... | 1982 | 6129644 |
| effects of a dietary deficiency in calcium on growth and calcium uptake from the aquatic environment in the goldfish, carassius auratus. | 1. young goldfish, carassius auratus, were fed a calcium-deficient diet for 8 or 56 days and then their net uptake of calcium from the aquatic environment was examined using 45ca. 2. they showed normal growth and the normal level of plasma calcium in both experiments. 3. in the short-term experiment, no dietary effect was found in the uptake of environmental calcium. in the long-term experiment, however, the rate of uptake was significantly stimulated by 18%. 4. the results indicate the presence ... | 1983 | 6131769 |
| altered activities of branchial and renal na/k- and mg-atpases in cold-acclimated goldfish (carassius auratus). | 1. cold-acclimated (1 degree c) goldfish (carassius auratus) branchial na/k-atpase activity was elevated 100% while renal na/k-atpase activity was not significantly affected compared with warm-acclimated (20 degrees c) goldfish. 2. cold-acclimated goldfish branchial and renal mg-atpase activity was reduced 18 and 30% on a per mg protein basis, respectively. 3. renal na/k-atpase activity was 4.6- and 1.6-fold greater than gill in cold- and warm-acclimated fish, respectively. 4. the elevated branc ... | 1983 | 6132750 |
| optic tectum adenylate cyclase activity from goldfish (carassius auratus) as a model to assess dopamine receptor agonists and antagonists. | the distribution of adenylate cyclase activity in several discrete areas of brain in the goldfish (carassius auratus) and the responsiveness of this activity in the optic tectum to various neurotransmitters were studied. adenylate cyclase activity was found to have an uneven distribution in the brain, the highest concentrations occurring in the telencephalon. a dopamine-sensitive adenylate cyclase was found in the optic tectum. the increase in camp formation induced by dopamine was selectively p ... | 1983 | 6133329 |
| drug-oxidizing mono-oxygenase system in liver microsomes of goldfish (carassius auratus). | the fractionation of the liver of goldfish (carassius auratus) was studied, and the properties of the microsomal fraction were examined. the microsomal fraction contained cytochrome p-450 and catalyzed the oxidation of aminopyrine, aniline, 7-ethoxycoumarin and benzo(a)pyrene. the oxidation activities were significantly lower than those of rat liver microsomes. the titration of cytochrome p-450 by potassium cyanide indicated the presence of multiple forms of cytochrome p-450 in goldfish liver mi ... | 1983 | 6139256 |
| carbon dioxide production by red skeletal muscle of goldfish (carassius auratus l.) aerobic and anaerobic metabolism of glucose and glutamate. | oxygen uptake and metabolic co2 production by lateral red muscle of goldfish have been measured in vitro. added glucose 6-phosphate depresses the rate of oxygen uptake by minced red muscle (crabtree effect). total co2 production is stimulated resulting in a respiratory quotient which is considerably greater than one. 14co2 release from [u-14c] glucose 6-phosphate and [u-14c] glutamate continues during anoxia. no activity of the hexose monophosphate shunt was observed. the results suggest that bo ... | 1984 | 6141024 |
| responses of solitary retinal horizontal cells from carassius auratus to l-glutamate and related amino acids. | effects of l-glutamate and its analogues on membrane potentials of solitary horizontal cells were studied by intracellular recording. l-glutamate depolarized these cells at micromolar concentrations (greater than or equal to 10 microm), while d-glutamate and l-alpha-amino adipic acid produced slight depolarizations only at millimolar concentrations. neither l- nor d-aspartate, even at millimolar doses, produced any change in solitary horizontal-cell resting potential. solitary horizontal-cell re ... | 1984 | 6143822 |
| effects of clomiphene citrate, a nonsteroidal antiestrogen, on brain monoaminergic mechanisms in female goldfish, carassius auratus. | the antiestrogen, clomiphene citrate ( merrell -national laboratories) was administered to female goldfish in order to test the hypothesis that this drug may act on brain monoaminergic mechanisms. brain monoamine oxidase (mao) activity and hypothalamic serotonin (5-ht) content were measured fluorometrically after i.p. administration of 0, 5 or 25 micrograms clomiphene citrate/g body wt. brain mao activity was significantly inhibited by the high dose of clomiphene citrate, whereas hypothalamic 5- ... | 1984 | 6144439 |
| the effects of somatostatin on serum growth hormone levels in the goldfish, carassius auratus. | in the present study the effects of somatostatin on serum growth hormone (gh) levels in the goldfish, carassius auratus, were investigated. a single intraperitoneal injection of either 0.1 or 1.0 micrograms somatostatin/g body wt caused a significant decrease in serum gh levels at 1 h postinjection compared to vehicle-injected controls. two intraperitoneal injections of somatostatin (1.0 micrograms/g body wt), given 12 hr apart, caused a significant decrease in serum gh levels, compared to both ... | 1984 | 6144614 |
| the in vitro metabolism by homogenates of goldfish (carassius auratus) liver of pentachloro-2-(chloromethyl sulphonamido) diphenyl ether, the major component and active ingredient of the mothproofing agent eulan wa new. | after dosing goldfish (carassius auratus) for 2 hr with pentachloro-2-(chloromethyl sulphonamido) diphenyl ether, 6-pcsd, (the major component of the active ingredients of the mothproofing agent eulan wa new) in the surrounding water, high concentrations of the corresponding amine pentachloro-2-aminodiphenyl ether, 5-pad, were found in the liver. this suggests that the liver is a primary site of 5-pad formation in vivo. homogenates of goldfish liver showed a 5-pad forming activity when incubated ... | 1984 | 6146475 |
| characterization of benzo[a]pyrene metabolites formed by 3-methylcholanthrene-induced goldfish, black bullhead and brown bullhead. | metabolites of bap formed by 3-mc-induced goldfish (carassius auratus), black bullhead (ictalurus melas), brown bullhead (ictalurus nebulus) and rat have been separated by hplc. the main metabolites in both bullhead species and the rat were 3-hydroxy-bap and bap 9,10- and 7,8-dihydrodiols, whereas bap 1,6- and 3,6-diones and 9- and 3-hydroxy-bap predominated in the goldfish. induced rat formed over 10 times as many total metabolites as the fish. no induction was observed in the 3-mc-treated brow ... | 1984 | 6149861 |
| origin of efferent fibers of the vestibular apparatus in goldfish. a horseradish peroxidase study. | after injecting a horseradish peroxidase (hrp) solution into the vestibular apparatus in goldfish (carassius auratus), cells in the medulla oblongata exhibited retrogradely transported hrp reaction product. these labeled cells were confined to 3 nuclei, i.e. the nucleus motorius tegmenti of bartelmez (with the most prominent labeled cell groups), the ventral vestibular nucleus (dieter's nucleus) and the medial vestibular nucleus. we consider these labeled cells to be the origin of the efferent i ... | 1980 | 6189014 |
| three distinct morphological classes of receptors in fish olfactory organs. | three morphologically distinct classes of receptor-neurons are proposed: (1) type i ciliar cells, (2) microvillar cells and (3) type ii ciliar cells. retrograde transport of horseradish peroxidase by axons in the olfactory nerve to the olfactory organs of goldfish (carassius auratus) and channel catfish (ictalurus punctatus) provided evidence that these axon-bearing cells are present in the organs of both species. goldfish olfactory organs were also studied with scanning electron microscopy, dis ... | 1984 | 6199384 |
| effect of ascorbic acid on biotransformation and modification of the toxicity of mercurials in goldfish (carassius auratus). | 1982 | 6212265 | |
| immunoreactive opsin in the pineal organ of reptiles and birds. | the presence of opsin was investigated with light microscopic immunocytochemistry in pinealocytes of reptiles and birds (emys orbicularis, pseudemys scripta elegans, lacerta agilis et viridis, gallus domesticus, columba livia, melopsittacus undulatus, serinus canaria, taeniopyga punctate). the outer segments of pinealocytes selectively bound antiopsin antibody as revealed by indirect immunocytochemical techniques, indicating the occurrence of a rhodopsin-like photopigment in these structures. th ... | 1982 | 6213109 |
| histochemical analysis of muscle fibers in myotome of teleost fishes (carassius auratus gibelio). | qualitative histochemical studies were carried out on lateral musculature of carassius auratus gibelio. on the basis of some metabolic enzymes (sdh, ldh) and myofibrillar atp-ase activities, red, intermediate, white and small diameter muscle fibers were discerned. when sdh method was used, two other fiber types were distinguished. they built up a transition zone, which lay between intermediate and white muscle fiber complexes. the histochemical reaction for myofibrillar atp-ase activity, after a ... | 1982 | 6219051 |
| cerebrospinal fluid-contacting neurons, sensory pinealocytes and landolt's clubs of the retina as revealed by means of an electron-microscopic immunoreaction against opsin. | opsin-immunoreactive sites of hypothalamic cerebrospinal fluid (csf)-contacting neurons, pinealocytes and retinal cells were studied in various vertebrates (carassius auratus, phoxinus phoxinus, triturus cristatus, bombina bombina, rana esculenta) by means of postembedding immuno-electron microscopy with the use of the protein a-gold labeling method. the retina of the rat served as a general reference tissue for the quality of the immunocytochemical reaction. a strong opsin immunoreaction (rat-a ... | 1983 | 6226359 |
| [phosphatases and oxidative enzymes in the kidney of the prussian carp (carassius auratus gibelio bloch) adapted to salt water]. | the distribution and activities of phosphatases and oxidative enzymes have been determined with the help of histochemical methods in the kidney of the prussian carp, a stenohaline freshwater-fish. in addition to fish maintained in freshwater aquaria, a group of the animals used has been adapted to seawater of moderate salinity. the following pattern of enzyme reaction intensities has been observed in the various kidney structures: strong reactions of alkaline phosphatase in the nephron are confi ... | 1980 | 6251647 |
| distribution of neurofilaments in myelinated axons of the optic nerve of goldfish (carassius auratus l.). | neurofilaments were counted in myelinated axons of the optic nerve of goldfish which were acclimated to 5 degrees and 25 degrees c. the number of neurofilaments increases markedly with increasing axonal size; axons of less than 0.1 micrometer 2 in area contain between 25 and 60 neurofilaments, while in the larger axons of area greater than 1.0 micrometer 2 there are approximately 190. the densities of the neurofilaments in the small axons are noticeably higher than in the larger ones (507 and 16 ... | 1980 | 6253602 |
| effects of lithium chloride on lateral line responses in carassius auratus. | 1980 | 6253837 | |
| characterization of and hormonal effects on subcellular fractions from xanthophores of the goldfish carassius auratus l. | 1981 | 6272788 | |
| histological and enzyme histochemical studies on the nephrons of the freshwater fishes, cyprinus carpio and carassius auratus. | the nephrons of carp (cyprinus carpio) and goldfish (carassius auratus) were examined histologically and also histochemically for enzymes. in both species the distal and collecting tubules have much wider lumens than do the other renal tubules; thus urine probably flows more slowly in these larger tubules. enzyme histochemistry shows that epithelium of the neck and proximal and intermediate tubules respires anaerobically, whereas that of the distal and collecting tubules respires aerobically. th ... | 1982 | 6286982 |
| isolation of xanthophores from the goldfish (carassius auratus l.). | a method is described for the isolation of milligram quantities of viable, hormone-responsive xanthophores from goldfish scales. the preparations are typically 70 to 90% pure and are useful for biochemical analyses or for establishing primary cultures. | 1982 | 6288547 |
| influence of catecholamines on gonadotropin secretion in goldfish, carassius auratus. | serum gonadotropin (gth) concentrations in female goldfish were measured before and at various times after intraperitoneal injection of drugs altering catecholamine synthesis and neural activities. reserpine, a depleter of neurotransmitter stores, elevated serum gth levels compared to controls, suggesting the general involvement of neurotransmitters in altering gth release. 6-hydroxydopamine, a catecholaminergic neurotoxin, increased serum gth concentration, suggesting that catecholaminergic neu ... | 1983 | 6298058 |
| effects of cadmium-enriched sediment on fish and amphibian embryo-larval stages. | aquatic toxicity tests were conducted to evaluate the effects of cadmium-enriched sediment on embryo-larval stages of the goldfish (carassius auratus), leopard frog (rana pipiens), and largemouth bass (micropterus salmoides). natural stream sediment was collected and enriched with cadmium to nominal concentrations of 1.0, 10.0, 100, and 1000 mg/kg. enriched sediments were placed in pyrex dishes and covered with 350 ml of reconstituted water. fertilized eggs were placed in the dishes and maintain ... | 1984 | 6332728 |
| effects of dopamine on gonadotropin release in female goldfish, carassius auratus. | intraperitoneal injections of dopamine (da) or its agonist, apomorphine decreased and pimozide, a da antagonist, increased serum gonadotropin (gth) levels in normal female goldfish. injection of da into the third cranial ventricular did not alter serum gth concentrations. intraperitoneal injections of da or apomorphine each reduced the highly elevated serum gth levels caused by preoptic lesions which abolish an inhibitory hypothalamic influence on gth release allowing prolonged spontaneous relea ... | 1983 | 6343907 |
| effects of pimozide and des gly10,[d-ala6]luteinizing hormone-releasing hormone ethylamide on serum gonadotropin concentrations, germinal vesicle migration, and ovulation in female goldfish, carassius auratus. | in gravid female goldfish held at 10-12 degrees, a single injection of des gly10,[d-ala6]luteinizing hormone-releasing hormone ethylamide (lhrh-a), or 2 injections of lhrh-a given 12 hr apart, increased serum gonadotropin (gth) concentrations, but did not stimulate germinal vesicle migration or ovulation. injection of a dopamine antagonist, pimozide (pim), increased serum gth levels. pim injected with the second of two lhrh-a injections not only potentiated the lhrh-a-induced increase in serum g ... | 1983 | 6354840 |
| serotonin in the brain of the goldfish, carassius auratus. an immunocytochemical study. | the distribution of immunoreactive serotonin (5-ht) was investigated in the brain and pituitary gland of the goldfish with the use of indirect immunofluorescence technique. immunoreactive cerebrospinal fluid-contacting neurons were found in the nucleus recessus lateralis and in the nucleus recessus posterioris of the hypothalamus. additional immunoreactive neurons were observed ventro-lateral to the posterior commissure in the nucleus dorsolateralis thalami. this group of cell bodies extends pos ... | 1983 | 6357477 |
| beta 2 microglobulin-like polypeptide of the goldfish, carassius auratus. | antisera to human beta 2 microglobulin (beta 2m) detected a plasma membrane molecule on goldfish (carassius auratus) cells in immunofluorescence. a goldfish molecule detected by radioimmunoassay (ria) co-eluted with human beta 2m on gel filtration. by affinity chromatography on immobilized antibody to human beta 2m, a molecule was purified (from extracts of goldfish) that showed, on sds-polyacrylamide gel electrophoresis, a mobility similar to that of human beta 2m (apparent mr 12,800 +/- 500). | 1984 | 6369118 |
| immunocytochemical localization of luteinizing hormone-releasing hormone in the brain of the goldfish carassius auratus. | using an indirect immunofluorescence technique, lh-rh was localized in the brain of the goldfish (carassius auratus). immunoreactive cell bodies were inconsistantly found in two hypothalamic nuclei: the anteroventral nucleus preopticus periventricularis (npp) and the posterior nucleus lateralis tuberis (nltp). numerous immunoreactive fibers were observed in hypothalamic as well as in the extrahypothalamic parts of the brain and in the proximal pars distalis of the pituitary gland. our results ar ... | 1984 | 6370786 |
| the release of gamma-aminobutyric acid from horizontal cells of the goldfish (carassius auratus) retina. | isolated horizontal cells from goldfish retinas were prepared by enzymatic dissociation using papain and separated from other cells by velocity sedimentation. in the intact retina, h1 horizontal cells possess a high-affinity mechanism for accumulating gamma-aminobutyric acid (gaba). this property is retained in isolated cells, which also release the accumulated gaba in response to depolarization by elevated external k+. l-glutamic acid and its analogues are highly effective at micromolar concent ... | 1984 | 6387085 |
| lethal and mutagenic effects of radiation and chemicals on cultured fish cells derived from the erythrophoroma of goldfish (carassius auratus). | gem 199 cells derived from an erythrophoroma of goldfish (carassius auratus), which had a high plating efficiency, were used to investigate the lethal and mutational effects of radiations (uv and gamma-rays) and chemicals (4nqo and mnng). the cells were more resistant to gamma-rays than mammalian cells and caf-mm1 cells derived from the normal fin tissue of goldfish. they were also more resistant to uv-irradiation than caf-mm1 cells. photoreactivation after uv-irradiation was present in gem 199 ... | 1983 | 6408467 |
| toxicity of carbaryl and 1-naphthol to goldfish (carassius auratus) and killifish (fundulus heteroclitus). | 1983 | 6416338 | |
| [experimental study of the bioaccumulation of inorganic mercury and methylmercury in the goldfish (carassius auratus l.)]. | the study of the mercury and methylmercury bioaccumulation by various species of fish is only possible experimentally when the animals are maintained fasting during a few days. with a such experimentation in the goldfish (carassius auratus l.), the authors are showing that methylmercury is much more accumulated than inorganic mercury: the transfert factor is about 760 to 780 for the methylmercury chloride and only 90 for the mercuric chloride. in fact a lot of variables occur in this phenomena o ... | 1980 | 6449276 |
| light- and electron-microscopic demonstration of immunoreactive opsin in the pinealocytes of various vertebrates. | an antibody to opsin isolated from rod outer segments of the frog retina was applied in light- and electron-microscopic immunocytochemical studies to the pineal organ of various vertebrates (cyprinus carpio, carassius auratus, rana esculenta, emys orbicularis, pseudemys scripta elegans, lacerta agilis and viridis. gallus domesticus, columba livia, melopsittacus undulatus, serinus canaria, taeniopyga punctata, didelphis virginiana, erinaceus roumanicus, myotis myotis, rabbit, rat, cat). | 1981 | 6458362 |
| gonadotropin release from the pars distalis of goldfish, carassius auratus, transplanted beside the brain or into the brain ventricles: additional evidence for gonadotropin-release-inhibitory factor. | the pars distalis of the pituitary was transplanted from one goldfish to another, of matched gonadal condition and body size, either beside the brain ("juxta" location) or into the brain ventricle in the preoptic region or under the optic tectum. recipients of a pars distalis had significantly higher serum gonadotropin (gth) levels than sham-operated controls without transplants; following removal of the transplants, serum gth levels decreased to levels found in controls within 24 hr. this demon ... | 1984 | 6468914 |
| performance of goldfish (carassius auratus) in patterned sequences of rewarded and nonrewarded trials. | the performance of goldfish was studied in a series of experiments with patterned sequences of reward (r) and nonreward (n) for response to a given stimulus (s3). trials with two other, readily discriminable stimuli, response to one always rewarded and response to the second never rewarded, were interpolated in such a way that the outcome of any s3 trial could not be predicted from the events of the immediately preceding trial. the main purpose was to look for control of response to s3 based on ... | 1984 | 6478787 |
| glial fibrillary acidic protein in regenerating teleost spinal cord. | immunohistological and ultrastructural studies were carried out on normal and regenerating spinal cord of the gymnotid sternarchus albifrons, and in the brain and spinal cord of the goldfish carassius auratus, to examine the distribution of glial fibrillary acidic protein (gfap) in these tissues. sections of normal goldfish brain and spinal cord exhibited positive staining for gfap. in normal sternarchus spinal cord, electron microscopy has revealed filament-filled astrocytic processes; however, ... | 1984 | 6481149 |
| structural and functional analysis of spontaneous anti-nitrophenyl antibodies in three cyprinid fish species: carp (cyrinus carpio), goldfish (carassius auratus) and tench (tinca tinca). | high spontaneous anti-trinitrophenyl (tnp) activities were found in three cyprinid fish species: carp (cyprinus carpio), goldfish (carassius auratus) and tench (tinca tinca). the molecules involved, isolated by affinity chromatography on dinitrophenyl-lysine sepharose (dnp-lysine-sepharose), had the main characteristics of a high molecular weight immunoglobulin (igm-like). affinity measurements were performed on natural anti-dnp/tnp antibodies isolated from nine individual tench sera, using the ... | 1984 | 6500139 |
| trypanosoma danilewskyi: host specificity and host's effect on morphometrics. | carassius auratus, barbus conhus, danio malabaricus, catostomus commersoni, notropis cornutus, etheostoma caeruleum, and ictalurus nebulosus were susceptible to trypanosoma danilewskyi by intraperitoneal inoculation. trypanosomes isolated from all species of susceptible fishes were infective to goldfish. no trypanosomes were detected in inoculated semotilus atromaculatus, ambloplites rupestris, lepomis gibbosus and perca flavescens. fifty specimens were measured from each of 3 c. auratus, 2 b. c ... | 1984 | 6512642 |
| [polymorphism of trypanosoma gruby, 1841 found in the blood of carp (carassius auratus gibelio (bloch), perch (perca fluviatilis l.) and stone perch (acerina cernua (l.))]. | 1984 | 6516399 | |
| temperature dependent attraction by goldfish to a chemical feeding cue presented alone and in combination with heated water. | an eight cell multiple-choice experiment was used to investigate the influence of temperature on the locomotor response of goldfish (carassius auratus) to a chemical feeding cue. when a food extract was infused into a single cell at ambient temperatures of 26, 28, 30, 32, and 34 degrees c (ambient temperature=acclimation temperature) the goldfish spent more time in the extract cell than three similarly outfitted dummy cells at all temperatures, but the intensity of their attraction varied over t ... | 1984 | 6522471 |
| effects of olfactory bulb ablation on cardiac and ventilatory arousal responses and their habituation in the goldfish carassius auratus. | the effects of olfactory bulb ablation on the cardiac and ventilatory arousal responses to the onset of illumination and habituation of these responses were investigated in goldfish. bulbectomy did not effect the magnitude of response on novel stimulus presentation. normal, sham operated, and olfactory bulb-ablated animals showed similar rates of habituation. these results suggest that deficits in feeding and sexual behavior in goldfish are due to the loss of specific olfactory influences on low ... | 1984 | 6525140 |
| the effect of water acidification on prolactin cells and pars intermedia pas-positive cells in the teleost fish oreochromis (formerly sarotherodon) mossambicus and carassius auratus. | although exposure to acid water (ph 3.5) induces severe and prolonged reduction in plasma osmolarity and total plasma calcium concentration in tilapia (oreochromis mossambicus) and goldfish (carassius auratus), the responses of the hypophyseal cells are clearly different. in tilapia, the size of the rostral pars distalis of the pituitary gland is enlarged as a result of the increase in size and number of prolactin cells. the pars intermedia pas-positive (pipas) cells are not noticeably changed. ... | 1984 | 6525622 |
| in vitro estradiol-17 beta and testosterone production by ovarian follicles of the goldfish, carassius auratus. | in vitro production of estradiol-17 beta and testosterone by ovarian follicles of goldfish (carassius auratus) at different developmental stages in response to human chorionic gonadotropin (hcg) was examined using 18-hr incubations. the vitellogenic follicles (primary and secondary yolk stage) produced estradiol-17 beta in response to hcg; follicles at the secondary yolk stage produced about five times more estradiol-17 beta than the primary yolk stage follicles. however, tertiary yolk stage fol ... | 1984 | 6539268 |
| incidence of chromatoblastomas in aging goldfish (carassius auratus). | the incidence of chromatoblastomas in aging goldfish, carassius auratus, was observed for 2 successive years. tumors first appeared in fish at 5 years of age, and the tumor frequency increased with increasing age of the fish. the cumulative incidence rate of chromatoblastomas and the mean number of tumors per fish were estimated for each age. the mean number of tumors per fish fitted a straight line with a slope of approximately 3 on a double logarithmic graph against age. thus tumor incidence s ... | 1983 | 6572741 |
| nuclear transplantation in teleosts. hybrid fish from the nucleus of crucian and the cytoplasm of carp. | hybrid fish are obtained from the combination of nucleus and cytoplasm from two genera of fresh-water teleosts using the technique of nuclear transplantation (i.e. the combination of the nucleus of crucian (carassius auratus) and the cytoplasm of carp (cyprinus carpio]. morphological characteristics of these hybrid fish that have been examined so far indicate that some features such as barbs, pharyngeal teeth, the number of scales along the lateral line, and the number of vertebrae are similar t ... | 1984 | 6597566 |
| involvement of the telencephalic hemispheres and the preoptic area in sexual behavior of the male goldfish, carassius auratus: a brain-lesion study. | to locate the brain areas involved in sexual behavior, the effects on male sexual behavior of localized electrolytic lesions in various parts of the telencephalic hemispheres and the preoptic area and of gross ablations of parts of the telencephalic hemispheres were examined in goldfish. all three patterns of male sexual behavior examined (following, butting , and spawning) were severely impaired after bilateral lesions confined to the area ventralis telencephali pars supracommissuralis and/or p ... | 1984 | 6610412 |
| comparison of the radiosensitivity of three goldfish cell lines using short term endpoints. | the induction and rejoining of dna strand breaks after gamma-irradiation in three goldfish (carassius auratus) cell lines with different sensitivities to the lethal effect of gamma-rays has been studied by the dna strand separation method using hydroxylapatite chromatography. the induction and rejoining of dna strand breaks was similar in all cell lines. there was also little difference in the degree of inhibition of dna synthesis immediately after irradiation. however, the rank orders of the du ... | 1984 | 6610658 |
| effects of hypothalamic lesions on serum growth hormone levels and growth rates in goldfish, carassius auratus. | serum growth hormone (gh) levels and growth rates of goldfish were measured concurrently following discrete electrothermic lesions of a number of hypothalamic nuclei. following lesions of the nucleus preopticus periventricularis (npp), significant increases in serum gh levels were evident at 4 weeks postlesioning in comparison to both sham-operated and normal control groups. in addition, the npp-lesioned fish showed significant increases in both total body weight and standard length increments c ... | 1983 | 6618153 |
| renal ammonia excretion and production in goldfish, carassius auratus, at low environmental ph. | renal ammonia excretion and production were investigated in normal and acidotic goldfish (carassius auratus). goldfish were made acidotic by exposure to a low ph environment (ph 4.0), which caused a lowering of blood ph from 7.88 to 7.61. environmental acidification resulted in an increase in total renal ammonia excretion (from 0.43 to 1.00 mueq x 100 g-1 x h-1) and urinary concentration (from 0.58 to 0.76 mm), as well as a rise in renal titratable acid output (from -0.57 to +0.62 mueq x 100 g-1 ... | 1983 | 6624954 |
| effects of monosodium l-glutamate on pituitary innervation in goldfish, carassius auratus. | monosodium l-glutamate was injected intraperitoneally into goldfish at a dosage of 2.5 mg/g body wt. the first noticeable effect in the pituitary, 30 min postinjection, was marked swelling of pituicytes in the neurohypophysis (nh). eighteen hours postinjection a large number of degenerating type b fibers were found in the nh of the proximal pars distalis (ppd), while all type a fibers, and type b fibers in other parts of the pituitary, remained unaffected. because glutamate causes a lesion in th ... | 1983 | 6628963 |
| lack of orthogonal particle assemblies and presence of tight junctions in astrocytes of the goldfish (carassius auratus). a freeze-fracture study. | the cytoplasmic membranes of astrocytes in the optic nerve of the goldfish were investigated by means of freeze-fracture techniques. astrocytes of normal and regenerating optic nerves did not differ in the fine structure of plasma membranes. emphasis is placed on the following results: astrocytic membranes of fish do not reveal the orthogonal particle assemblies that are believed to be generally characteristic for astrocytes in the white matter. astrocytes reveal extensive membrane areas occupie ... | 1983 | 6640627 |
| development of retinal monoamine neurons in larval goldfish: a histofluorescence study. | the emergence of retinal monoamine neurons was explored in embryonic and larval goldfish (carassius auratus) by means of a histofluorescence technique. the high-affinity uptake capacity of dopamine (da) and indoleamine-accumulating (ia) neurons for exogenously applied da and 5,6-dihydroxytryptamine began to occur simultaneously on the hatching day (stage 25/26). endogenous da neurons were first detected on the third postnatal day (stage 26/27). the appearance of da and ia neurons was found to be ... | 1983 | 6652502 |
| synaptic contacts between bipolar and photoreceptor cells in the retina of callionymus lyra l. | a combined light and electron microscopic study of golgi-impregnated retinas of the marine teleost callionymus lyra l. revealed mixed bipolar cells (m types) contacting rods and cones and pure cone bipolar cells (c types). five types of mixed bipolar cells can be differentiated on the basis of their synaptic contacts. two out of the five mixed bipolar cell types contact double cones, single cones, and rods (mixed, dark, pale, single [mdps and midget-mdps]). their endbuds make narrow cleft juncti ... | 1984 | 6707252 |
| effects of crude dubai oil on salmo gairdneri rich. and carassius auratus l. | 1984 | 6713130 | |
| [the primary structure of hemoglobin from goldfish (carassius auratus)]. | the primary structures of the alpha- and beta-chains from goldfish hemoglobin are given. the globin chains were separated by gel filtration after air-oxidation of globin. after chemical and enzymatical cleavage of the chains, the peptides were isolated by gel filtration and ion exchange chromatography on dowex. the fish-chains have one residue more than the human chains. the alpha-chain is acetylated at the amino-terminal residue and has no cysteine. compared with the human chains there are 66 a ... | 1984 | 6714939 |
| prostaglandin synthesis in goldfish heart, carassius auratus. | potential precursors for prostaglandin (pg) synthesis were measured in goldfish heart and skeletal muscle by gas chromatography. heart tissue contained docosahexaenoic, arachidonic, eicosapentaenoic, and eicosatrienoic acids in concentrations of 3223 +/- 128, 1216 +/- 7.8, 260 +/- 72.8, and 250 +/- 14 ng/mg wet wt, respectively. 14c-labeled substrates were examined for their ability to be converted to prostaglandins. eicosatrienoic and docosahexaenoic acid were not synthesized into prostaglandin ... | 1984 | 6735165 |
| influences of norepinephrine and alpha-adrenergic mechanisms on gonadotropin secretion in female goldfish, carassius auratus. | intraperitoneal or intraventricular (3rd cranial ventricle) injection of norepinephrine (ne) caused an increase in serum gonadotropin (gth) concentrations in female goldfish at times of the year when the ovaries were regressed or at early stages of recrudescence, but had no influence at other stages of the ovarian cycle. in a previous report it was shown that clonidine (alpha-agonist) increased serum gth levels in fish at early or mid-ovarian recrudescence [j. p. chang, a. f. cook, and r. e. pet ... | 1984 | 6745634 |
| stress fibers in cells in situ: immunofluorescence visualization with antiactin, antimyosin, and anti-alpha-actinin. | stress fiber-like patterns are visualized by indirect immunofluorescence in scleroblasts (fibroblasts) in situ on the scale of the common goldfish, carassius auratus, using an affinity-purified antiactin, antimyosin, and anti-alpha-actinin. these fibers demonstrate the classical convergent and parallel patterns exhibited by stress fibers in tissue culture cells. because the dimensions, the composition, and the pattern of distribution of these cytoplasmic fibers correspond well with those of stre ... | 1982 | 6749863 |
| ruffed cell: a new type of neuron with a distinctive initial unmyelinated portion of the axon in the olfactory bulb of the goldfish (carassius auratus): ii. fine structure of the ruffed cell. | the fine structure and synaptic features of the ruffed cell, especially those of the initial unmyelinated portion of its axon (ip), were investigated by means of electron microscopy. the round or oval cell body is 10 to 20 micrometers in diameter. near the cell body, there is a specialized region of the ip, about 20 to 40 micromerters in diameter, which consists of branched protrusions from the ip. many neuronal processes end on these protrusions, and the whole assembly reminds one of a bird's n ... | 1980 | 6776163 |
| [melanotropic hormone of goldfish (carassius auratus l.): radioimmunologic comparison with synthetic alpha-msh]. | alpha msh from the neuro-intermediate lobe of the pituitary gland of the goldfish displays a competitive behaviour in an ria for synthetic alpha msh. the inhibition curves from neuro-intermediate homogenates parallel the standard curve (p < 0,01) but two major pools of immunoreactive peptides have been separated by sephadex gel chromatography. the neuro-intermediate lobe contains 480 +/- 56 ng (s.e.m.) of immunoreactive alpha msh. | 1980 | 6777055 |
| the effect of temperature on the hepatic catabolism of testosterone in the rainbow trout (salmo gairdneri) and the goldfish (carassius auratus). | 1980 | 6777240 | |
| resonance raman microscopy of rod and cone photoreceptors. | we have constructed a raman microscope that has enabled us to obtain resonance raman vibrational spectra from single photoreceptor cells. the laser beam which excites the raman scattering is focused on the outer segment of the photoreceptor through the epiillumination system of a light microscope. raman scattering from the visual pigment in the photoreceptor is collected by the objective and then dispersed onto a multichannel detector. high-quality spectra are recorded easily from individual out ... | 1982 | 6809771 |
| growth zone of the juvenile goldfish retina revealed by fluorescent flat mounts. | the retinas of juvenile goldfish (carassius auratus) were processed for fluorescence microscope studies with flat mounts. the fish were reared in a laboratory aquarium for 1-3 months after either one class of retinal dopaminergic (da) cells or indoleamine-accumulating (ia) cells had been destroyed by intravitreal injection of 6-hydroxydopamine (6-ohda; 2.5 micrograms) or 5,7-dihydroxytryptamine (5,7-dht; 2.5 micrograms). the fish grew 10-12 cm in body length on the average for 3 months. the reti ... | 1982 | 6813509 |
| [1st immunocytochemical application of an anti-dopamine antibody in the study of the central nervous system]. | an antibody against dopamine was raised in rabbits by means of an immunogen constituting dopamine coupled to bovine serum albumin by formaldehyde. these antibodies were applied to frozen sections of goldfish (carassius auratus) brain fixed by 4% paraformaldehyde. the localisation of immunoreactive structures corresponded to regions rich in dopamine detected by histofluorescence. the specificity of this antiserum tested with the aid of dopamine analogues coupled with a carrying protein different ... | 1982 | 6820314 |
| morphologic changes in teleost primary and secondary retinal cells following brief exposure to light. | light adaptive morphologic changes in the teleost retina, such as movements of rods, cones, and epithelial pigment and spinule formation on horizontal cell terminals, are normally associated with continual exposure to light. depending on a variety of factors these processes are generally completed within 30-60 min. in this report we show that a brief exposure to light (1-2 min) preceded and followed by darkness is sufficient to elicit these changes in four species of teleost; the trout (salmo ga ... | 1983 | 6826311 |