Publications

fine structure of the olfactory epithelium in the goldfish, carassius auratus. a study of retrograde degeneration.	the fine structure of the goldfish olfactory epithelium was studied by transmission and scanning electron microscopy. six different cell types were distinguished. identification of the olfactory receptor cell was accomplished by use of retrograde degeneration studies. two morphologically distinct types of olfactory receptor cells were identified: one type bears radially oriented cilia (type i cell); the other type bears microvilli (type ii cell). the other four cell types were not identifiable a ...	1977	922848
[study of 50 strains of aeromonas hydrophilia isolated from fishes].	a bacteriological survey of the healthy goldfish (carassius auratus) demonstrated the frequent occurrence of a. hydrophila. the biochemical characters and the sensitivity to 29 chemiotherapics and 15 antiseptics of 50 fish originating strains were studied and compared with a number of strains, implicated in human pathology. the results of this study indicate a good agreement for the biochemical characters and the sensitivity to chemiotherapics between the fish and the human strains. owing to thi ...	1977	603101
gonads of carassius auratus (teleosts) in organ culture: a new technique and the effects of testosterone.	the use of a semi-natural medium (eagle's mem supplemented with chicken embryo extract) appears to be satisfactory for ovarian and testicular fragment cultures of carassius auratus. the male germ cells show a normal degeneration which might be attributed to a lack of pituitary hormones: gonadotropic and, possibly, somatotropic hormone. the ovarian fragments maintain a normal organization during 21 days of culture. only the oocytes in late vitellogenesis massively atresiate at the beginning of cu ...	1977	558153
new observations on the fine structure of the liver in goldfish (carassius auratus).	a re-examination of goldfish liver was made through the use of sem of fractured samples and tem of ultrathin-sections and freeze-etch replicas. several new hepatic fine structures described in the present study are morphologically similar to those reported previously in many higher vertebrates including mammals. hepatic sinusoids of goldfish contain fenestrations which are arranged into sieve plates. although the hepatic plates are made up of two layers of hepatocytes, the parenchymal cells of g ...	1977	421256
acth-induced internalization of plasma membrane in xanthophores of the goldfish, carassius auratus l.		1978	218582
head-kidney thyroid in some indian teleosts.	six species of fishes, with different habits and belonging to different habitats and families, have been investigated. only four, namely discognathus lamta, carassius auratus, glossogobius giuris and polynemus sexfilis have shown the presence of heterotopic thyroid follicles in their head-kidneys. the heterotopic thyroid follicles of discognathus lamta appear to be functional while those of the rest of fishes are in non-functional state.	1978	749388
antigen recognition and immune response in goldfish carassius auratus at different temperatures.		1978	640118
effects of forebrain ablation on growth in teleost fishes.	the effect of forebrain extirpation on food uptake and growth was studied in different teleost species. in the case of wild species such as carassius gibelio and macropodus opercularis concolor, a prolonged enhancement of food uptake and body growth was found following forebrain ablation. in the case of domesticated species such as the common goldfish (carassius auratus) and macropodus opercularis, there was no effect of forebrain extirpation on either food uptake or growth.	1978	754418
the effects of pinealectomy on pituitary prolactin levels in carassius auratus exposed to various photoperiod-temperature regimes.	pinealectomy has an influence on pituitary prolactin levels in goldfish maintained under certain photoperiod-temperature regimes. the effects of pinealectomy on pituitary prolactin content depend on photoperiod and time of sampling. thus, differences between pinealectomized and sham operated animals may be due to a shift of a daily variation in pituitary prolactin levels. the pineal in fishes may thus be involved in photoperiod influences on daily prolactin rhythms.	1978	747999
the kidney of the prussian carp, carassius auratus gibelio (cyprinidae). iii. glycogen-rich cells in the distal segment of nephronic tubule.	glycogen may be present in considerable amount in the distal segment of the nephronic tubule of a teleost freshwater fish, as revealed by light- and electron-microscopical observation. adaptation of crassiss auratus gibelio to increased salinity causes alterations of the cell fine structure (e.g. mitochondria and baso-lateral infoldings) but apparently does not influence deposition of glycogen. however glycogen storage is directly controlled by environmental temperature and may be part of an ann ...	1978	675668
some observations on the morphological evidence for mechanism of the bile secretion.	the morphological evidence of the intracellular route of bile secretion was investigated in the liver of goldfish (carassius auratus) as revealed by electron microscopy. smooth surfaced tubules or cisterns within or adjacent to the golgi apparatus showed linear saccular forms and contained sparse particulate or cloudy materials of low electron density. the isolated vacuoles were restrictedly found between the golgi apparatus and the intracellular bile canaliculus or hepatocytic side at the zone ...	1978	636824
topography of estrogen target cells in the forebrain of goldfish, carassius auratus.	the topographical distribution of estradiol-concentrating cells in the brain of male and female teleost, carassius auratus, was determined by autoradiography, after injection of 3h estradiol-17beta. radioactively labeled neurons are found in specific regions of the forebrain, with a similar topographical distribution both in males and females. regions of accumulation of estrogen target cells include the supracommissural area of the telencephalon, the preoptic area, the central hypothalamic area ...	1978	721971
morphologic and biochemical characterization of erythrophoromas in goldfish (carassius auratus).	the properties of spontaneous cutaneous erythrophoromas that occurred in 17 adult goldfish (carassius auratus) were described. this study was based on combined histology, cytochemistry, electron microscopy, and biochemical analysis. tumors that varied from 0.4 to 2.7 cm in maximum diameter were located on various parts of the skin. as shown by light microscopy, tumors were composed of red- to orange-pigmented, dendritic, stellate, or spindle-shaped cells, which coalesced into an excrescence in t ...	1978	281553
microelectrophoretic identification of pituitary prolactin in carassius auratus.		1978	581757
microspectrophotometric studies on the visual pigment in the intact retina of the goldfish, carassius auratus (linn.).	the visual pigments in intact retinas of the common goldfish were examined by microspectrophotometry. difference spectra free of photoproduct contamination had absorbance maxima at lambda527 nm +/- 2 nm. the average pigment density, about 0.32, was almost invariant with regard to retinal location and specimen size. traces of a photoproduct absorbing maximally at lambda480-490 nm were found. the normalized "absorbance" curve deviated from standard templates. it was suggested that this was an effe ...	1978	715263
seasonal effects of pinealectomy on gonadal activity in the goldfish, carassius auratus.		1978	687709
ultrastructural demonstration of hormone-induced movement of carotenoid droplets and endoplasmic reticulum in xanthophores of the goldfish, carassius auratus l.	the hormone-induced pigment dispersion in primary cultures of xanthophores of goldfish (carassius auratus l.) has been shown to involve the dispersion of not only carotenoid droplets but also of smooth endoplasmic reticulum. the dispersion of these organelles is inhibited by cytochalasin b and is accompanied by thinning of the cell body, thickening of the processes, and also overall changes in cellular morphology (process extension) under certain conditions. electron microscopic examination of h ...	1978	210950
auditory masking patterns in the goldfish (carassius auratus): psychophysical tuning curves.	the masking effects of tones on the detection auditory signals were studied in goldfish using the psychophysical tuning-curve paradigm. for signals below 350 hz, masking is an inverse function of the frequency separation between masker and signal; a finding consistent with previous masking studies on fishes, birds and mammals. for signals above 350 hz, masking peaks occur both in the 350 hz region and at the frequency of the signal. quantitative comparisons with recent neural tuning curves for g ...	1978	670874
the effect of training on the swimming muscles of the goldfish (carassius auratus).	goldfish (carassius auratus) were exercised continuously for periods of 28 days at swimming speeds of 1.5, 3.0 and 4.5 body lengths per second and their rates of growth were determined. changes in muscle fibre size were examined, as were changes which occurred in the concentrations of the major chemical constituents of these cells. these fish, typical of the carp family in that they are found only in still or slowly moving water, did not adapt well to the flowing water environment at any swimmin ...	1978	670869
effects of pinealectomy and melatonin treatment on liver and plasma metabolites in the goldfish, carassius auratus.		1978	669253
distribution of fibres reacting with an alpha-endorphin antiserum in the neurohypophysis of carassius auratus and cyprinus carpio.	a strong positive immunoreaction with an alpha-endorphin antiserum occurs in two distinct sites of the goldfish and carp neurohypophysis. fluorescent nerve terminals are found in the laminar nerve processes located in the rostral pars distalis, but the immunocytological reaction is mainly localised on the nerve processes of the posterior neurohypophysis lying between the intermediate lobe cells. almost all the digitations of the neurohypophysis are strongly fluorescent. the immunoreactive fibres ...	1978	657242
medulloepithelioma of the ciliary body in the goldfish (carassius auratus).	a medulloepithelioma of the ciliary body in the right eye of a 1-year-old goldfish (carassius auratus) had spindle and epithelial cells arranged either in columns or around a central lumen. vitreous-like material was found within the tumor. a medulloepithelioma is a most unusual tumor in fish in which ocular tumors are rare.	1978	664187
effects of hypothalamic lesions on the food intake of the goldfish (carassius auratus).	goldfish were trained to perform an operant in response in order to obtain food, thereby allowing the food intake to be accurately determined. the normal daily food intake was established for each fish before it was given a sham operation or bilateral hypothalamic lesions. it was then observed over a period of up to 60 days. lesions of the lateral areas of the hypothalamus were found to cause cessations of operant feeding of up to 60 days duration, and cessations of feeding on manually presented ...	1978	273462
[effect of acetylcholine on the heart ventricle of the goldfish carassius auratus, teleosts, cyprinidae. modification of the response as a function of temperature].	acetylcholine (ach) is more efficient on the red fish heart at 14 degrees c than at 5 degrees c or 8 degrees c. it does not probably exist a cholinesterasic system and high concentrations of ach are to be used to obtain significant variations of the heart frequency. ach does not appear as a physiological mediator and temperature seems to be an essential factor in heart regulation and modulation of the pharmacological effects of eventual mediators. a thermal adaptation exists but the fast increas ...	1978	150903
autonomic nervous tone and regulation of heart rate in the goldfish, carassius auratus.		1979	40748
the effects of lithium chloride on response to salient and nonsalient stimuli in carassius auratus.	the exploratory behaviour of 20 goldfish was investigated to see whether it was affected by treatment with lithium chloride. when familiar and novel stimuli were readily discriminable, lithium treatment had no effect on exploration. in a second study, using 20 fish, it was shown that when novel and familiar stimuli were less markedly different from each other, exploratory responses to the novel stimulus were reduced by lithium. the findings may be related to a general suppressant action of lithi ...	1979	489261
the effect of pinealectomy on serum k+ and cl- levels in the goldfish, carassius auratus.		1979	437492
intestinal peroxisomes of goldfish (carassius auratus)--examination for hydrolase, dehydrogenase and carnitine acetyltransferase activities.	1. rate sedimentation and isopycnic centrifugation were used to analyse the subcellular sites of enzymes in homogenates of goldfish intestinal mucosa. 2. the results allowed the following allocations to be made: carnitine acetyl transferase-mitochondrial and peroxisomal, xanthine dehydrogenase and nad: alpha-glycerophosphate dehydrogenase soluble phase, nadp: isocitrate dehydrogenase soluble phase and mitochondrial, and 2-naphthyl laurate hydrolase microsomal and/or brush border. 3. histochemist ...	1979	318295
hypothalamic monoamine oxidase, a component in the serotonergic control of pituitary prolactin content in carassius auratus l.		1979	488682
the effects of light reception on circulating estrogen levels in female goldfish, carassius auratus: importance of retinal pathways versus the pineal.		1979	488670
ultrastructure of the swim bladder of the goldfish, carassius auratus.	the swim bladder of the cyprinid carassius auratus (goldfish) is a two-chambered organ connected to the esophagus by a pneumatic duct. the anterior chamber is lined by a single type of squamous epithelial cell. two types of epithelial cells are present in the posterior chamber. flattened cells with differences in the electron density of the cytoplasm line most of the chamber. darker cells generally contain large amounts of glycogen. cuboidal epithelial cells also occur in the posterior chamber. ...	1979	476786
recovery of tectal nicotinic-cholinergic receptor sites during optic nerve degeneration in goldfish.	the concentration of cholinergic nicotinic-like sites as measured by alphabungarotoxin (alphabutx) binding, decreased in the goldfish (carassius auratus) optic tectum after optic nerve disconnection. initially, the rate of loss of sites is greater than the rate of tissue or protein degradation in experiments where disconnection was achieved either by unilateral optic nerve crush or by enucleation of one eye. when the crushed optic nerve is allowed to regenerate and form behaviorally potent conne ...	1979	421155
lithium effects on social aggregation in the goldfish (carassius auratus).	in the first experiment, using 240 goldfish in pairs, the effects of lithium chloride on social aggregation were observed. it was found that aggregation was reduced between two fish when both had received lithium treatment. when, in the second experiment, 24 fish were investigated in groups of three, it was found that maximal disruption of aggregation occurred when all three fish were lithium treated, but that partial social disruption occurred following lithium treatment of two out of three fis ...	1979	449426
effects of lithium on visual perceptual thresholds in the goldfish (carassius auratus).		1979	460680
ovulatory surge of gonadotropin in the goldfish, carassius auratus.		1979	447065
electron microscopic localization of [125i]alpha-bungarotoxin binding sites in the outer plexiform layer of the goldfish retina.	light and electron microscope autoradiography were performed on goldfish (carassius auratus) retinas incubated in [125i]labelled alpha-bungarotoxin. the toxin was bound preferentially to membrane receptors in the inner and outer plexiform layers. binding was suppressed by 10(-5) m nicotine or 10(-5) m native alpha-bungarotoxin. electron microscopic analysis of the outer plexiform layer (opl) strongly suggested that alpha-bungarotoxin binding sites were located on small bipolar cell dendritic pro ...	1979	438870
effects of forebrain ablation on taste aversion in goldfish (carassius auratus).		1979	437009
metabolism of 14c-heptachlor in goldfish (carassius auratus).		1979	539836
[histological study of the teleost liver. iii. the system of biliary pathways].	in the liver of haplochromis burtoni four divisions of the intrahepatic biliary pathways can be distinguished: canaliculus, canaliculus ductulus transition, ductulus biliferus, ductus biliferus. there are no transitional stages between the hepatocytes and biliary epithelial cells. the results of the investigation suggest that the ductules open into the ducts in two ways, directly and by graded transition of structure. the first part of the ductulus has a very narrow lumen and therefore is simila ...	1979	232800
non-simultaneous auditory masking in the goldfish, carassius auratus.	auditory thresholds were determined for 500 hz pure tone pulses of 15, 25 and 50 ms duration presented leading, following or simultaneously with noise pulses of 50 or 250 ms duration. masking by the noise decreased: (i) with an increase in tone pulse duration; (ii) with a shortening of the noise pulse duration; and (iii) as the interval between tone and noise pulses was increased from 0 to 350 ms. the effect of the noise was independent of whether the noise led or followed the pure tone. it is s ...	1979	536700
[the effect of the distribution of practice on the learning and forgetting in carassius auratus auratus linné].	the significance of massed and distributed practice in discrimination learning to criterion by goldfish was studied. all animals were trained to discriminate between 6 horizontal black and white stripes (positive stimulus) and 2 vertical black and white stripes (negative stimulus). 5 groups of animals, 12 ss each, got different training programs. groups varied in number of trials per day (30, 10, 5 successive trials) and in distribution of trials over the day (30 trials given in blocks of 5 with ...	1979	547582
the culture of tissue from the ovary of the goldfish carassius auratus.	small pieces of ovarian tissue derived from immature goldfish have been maintained in culture periods of up to three months. the progress of the culture was monitored by light and electron microscopy and showed that although degenerative changes occurred in the large oocytes the small oocytes and oogonia survived for the duration of the culture. quantitative studies indicate that both oogonia and small oocytes increase in number during the first three weeks of culture and observations from exper ...	1979	519709
studies on fish scale formation and resorption. iii. fine structure and calcification of the fibrillary plates of the scales in carassius auratus (cypriniformes: cyprinidae).	electron microscopic investigation of scales of the goldfish carassius auratus revealed that the lamellae of fibrillary plates contain sheet-like structures composed of vertically oriented collagen fibers embedded in an organic matrix. the fibers (tc fibers) are smaller in diameter (35-45 nm) than those of the lamellae and the matrix is stained intensely with lead citrate. the sheet-like structures as well as the lamellae are formed by fibroblasts located beneath the lamellae. the orientation of ...	1979	574424
visual pigment absorbance and scotopic spectral sensitivity in the goldfish, carassius auratus.	factors relating to the comparison of the absorbance spectra of visual pigments to experimentally determined relative spectral sensitivities of the eye are discussed with specific reference to the goldfish. it is concluded that the experimentally determined scotopic sensitivity of the goldfish can be directly related to the absorbance of goldfish porphyropsin without the need to infer input from long wavelength-sensitive cones.	1979	515480
fate of 14c-cis-chlordane in goldfish, carassius auratus (l.).		1979	497443
liquid chromatographic demonstration of catecholamine release in fish heart.	high-pressure liquid chromatography (hplc) was used to assay for catecholamines released into the heart of the goldfish (carassius auratus l.) upon stimulation of vagal nerve fibers. stimulation induced the release of norepinephrine, epinephrine and dopamine into the lumen of the perfused, isolated heart. the results suggest that heart activity in teleosts is directly modulated by functional adrenergic, cardioacceleratory nerve fibers.	1979	490140
in vitro estradiol-17 beta actions on hypothalamic monoamine oxidase activity in the goldfish, carassius auratus.		1979	488689
studies on the biology of fish bone. iii. ultrastructure of osteogenesis and resorption in osteocytic (cellular) and anosteocytic (acellular) bones.	the comparative ultrastructure of fish bone osteogenesis and resorption induced by scale removal was described in the osteocytic (cellular-boned) carassius auratus and the anosteocytic (acellular-boned) tilapia macrocephala. osteocytes, present in osteocytic bone, were lacking in anosteocytic bone. in osteocytic bone the osteoblast secreted a collagenous preosseous matrix in which it became enmeshed and then was termed a preosteocyte. when the preosseous matrix mineralized, the preosteocyte was ...	1979	115551
immunocytochemical identification of enkephalinergic neurons in the hypothalamic magnocellular preoptic nucleus of the goldfish, carassius auratus.	our immunocytochemical investigation of the magnocellular neuroendocrine system in the goldfish hypothalamus reveals enkephalin (enk)-containing neurons interspersed among the vasotocin (vt)- and isotocin (it)-containing neurons of the preoptic nucleus. the perikarya of the enk, vt, and it neurons do not show distinct morphological differences at the level of light microscopy and are not located preferentially within the nucleus. separate enk, vt and it fibers course laterally and ventrally thro ...	1979	387250
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) i. golgi impregnation and serial thin sectioning studies.	a new type of neuron was recognized in the olfactory bulb of the goldfish (carassius auratus) by means of light and high voltage electron microscopy of golgi-impregnated material, combined golgi-electron microscopy, and electron microscopy of serial thin sections. the neuron is located in the layer between the olfactory nerve layer and the anterior olfactory nucleus. it has a spherical cell body, about 10--20 microns in diameter, and several dendrites which form a spherical dendritic field, abou ...	1979	457934
histological observation of some of the endocrine glands in the sterile carp-funa hybrid (f1), with special reference to the hypophysis.	some endocrine glands of the carp-funa hybrids were studied with a light microscope to elucidate their detailed structure and the possible causal factor of sterility in the males. adult specimens of carp (cyprinus carpio), gengoroh-buna (carassius auratus cuvieri), and their hybrid (f1) were examined. the hybrid males are sterile as manifested by the failure of meiosis and seminomatous neoplasm in their testes. the hybrid females revealed well-developed ovaries, but their fertility was not teste ...	1979	539886
dna reassociation kinetics in diploid and phylogenetically tetraploid cyprinidae.	four diploid and three phylogenetically tetraploid cyprinidae (ostariophysi) have been characterized as for nuclear dna content, modal chromosome number and dna reassociation kinetics (hydroxyapatite chromatography). among the diploid species nuclear dna content (10(-12) g dna/2c) was 1.62 for tinca tinca, 1.87 for scardinius erythrophthalmus, 2.53 for leuciscus cephalus and 2.75 for alburnus alburnus, while the phylogenetically tetraploid species carassius auratus, barbus barbus and cyprinus ca ...	1979	490124
synaptic contacts of the horizontal cells in the retina of the marine teleost, callionymus lyra l.	the horizontal cell system in the retina of the fish callionymus lyra l. was investigated light microscopically and electron microscopically. one type of rod horizontal cells, which are only found in the mixed ventral part, exclusively contacts spherules with lateral endknobs in the triads. three types of cone horizontal cells occur. the first type, c-h1, contacts pedicles of pale and dark double cones and single cones. the processes always have a lateral position in the triads. this type has a ...	1979	762279
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
localization of alpha-bungarotoxin binding sites to the goldfish retinotectal projection.	the optic tectum of the goldfish carassius auratus is a rich source of alpha-bungarotoxin (alpha-btx) binding protein. in order to determine whether some fraction of these receptors is present at retinotectal synapses, we have compared the histological distribution of receptors revealed by the use of [125i]alpha-btx radioautography to the distribution of optic nerve terminals revealed by the use of cobalt and horseradish peroxidase (hrp) techniques. the majority of alpha-btx binding is concentra ...	1980	7357466
in vivo and in vitro studies on the host specificity of trypanoplasma salmositica.	the host specificity of trypanoplasma salmositica was studied by experimental inoculation into 13 species of common teleosts (notropis cornutus, notropis heterolepis, notropis spiloperus, nocomis biguttatus, rhinichthys atratulus, semotilus atromaculatus, carassius auratus, ambloplites rupestris, lepomis gibbosus, etheostoma nigrum, hypentelium nigricans, ictalurus melas, and eucalia inconstans). t. salmositica was not recovered at 14 and 40 days post inoculation. however, large numbers of the p ...	1980	7431516
responses of msh and prolactin cells to 5-hydroxytryptophan (5-htp) in amphibians and teleosts.	injection of 5-hydroxytryptophan (5-htp), a precursor of serotonin, induces dispersion of melanin in the amphibians, pleurodeles waltlii (urodela) and xenopus laevis (anura), in the goldfish, carassius auratus, and in the carp, cyprinus carpio. it is accompanied by a dispersion of erythrophore pigments. in the pituitaries of pleurodeles and goldfish, a stimulation of msh cells, characterized by a significant nuclear hypertrophy, is also observed; in carassius, msh cells may become degranulated. ...	1980	6967354
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
permanent cell lines from erythrophoromas in goldfish (carassius auratus).	attempts to establish permanent cell lines from spontaneous erythrophoromas (tumors derived from red pigment cells or erythrophores) of goldfish were made with the use of biopsy specimens from 12 tumors in 10 fish. three cell lines were established that grew in vitro in synthetic medium (l-15 or dulbecco's modified eagle's minimum essential medium) supplemented with 20% fetal bovine serum for more than 8 months. one of these lines (gem-81) with high proliferative activity was cultured for over 2 ...	1980	6928999
visualization of microtubules of cells in situ by indirect immunofluorescence.	microtubule staining patterns can be visualized within cells in situ on the surface of fish scales from the squirrel fish, holocentrus ascensionis, and the common goldfish, carassius auratus, after incubation with antibodies to sea urchin tubulin and fluorescein-labeled goat antibodies to rabbit immunoglobulin g. chromatophores in situ from both species reveal a radial microtubule framework that orients the alignment of pigment granules. innervating fibers of erythrophores on the h. ascensionis ...	1980	6935678
[the sequence of the alpha- and beta-chains of the goldfish hemoglobin (carassius auratus) (author's transl)].	the primary structures of the alpha- and beta-chains from goldfish hemoglobin are given. the globin chains were separated by gel filtration after oxidation of globin with air. the peptides for sequencing were obtained by chemical and enzymatical cleavage. the alpha-chain has 142 residues, the beta-chain 147. the alpha-chain is acetylated at the amino-terminal residue. compared with the human chains, there are 66 amino acid differences in the alpha-chain, 72 residues are different in the beta-cha ...	1980	7380396
apparent drug resistance to the organophosphate dimethyl (2,2,2-trichloro-1-hydroxyethyl) phosphonate by monogenetic trematodes.	gyrodactylus elegans on goldfish, (carassius auratus) from a commercial farm were resistant to recommended dosages of dimethyl (2,2,2-trichloro-1-hydroxyethyl) phosphonate. controlled experiments suggest that a dosage 100 times the commonly recommended minimal dosage (.25 mg/l) was required to remove trematodes. a hypothesis is proposed to account for the development of drug resistant trematodes based on the life cycle of the parasites and continual drug exposure.	1980	7411739
comparison of the pineal complex, retina and cerebrospinal fluid contacting neurons by immunocytochemical antirhodopsin reaction.	the presence of rhodopsin was investigated by an indirect immunocytochemical method in the pineal complex of various vertebrates (carassius auratus, cyprinus carpio, hypophthalamichthys molitrix, lucioperca lucioperca, triturus vulgaris, bombina bombina, rana esculenta, pseudemys scripta elegans, lacerta agilis et viridis, white leghorn chickens, rat), in the retina of lebistes reticulatus, lucioperca lucioperca, rana esculenta, lacerta agilis, pseudemys scripta elegans, the chicken and the rat, ...	1980	7456628
time course and pattern of optic fiber regeneration following tectal lobe removal in the goldfish.	following single tectal lobe removal in the adult goldfish, carassius auratus, the pattern of regeneration of the optic fibers which had previously projected to that tectum was examined at 1, 2, 4, 6, 8, 10, and 12 weeks postoperative using 3h-proline radioautography. we found that regenerating optic fibers grew across the midline through the transverse, minor, horizontal, and posterior commissures to innervate the remaining tectum. at early postoperative times innervation of the tectum was cont ...	1980	7410595
toxicity of pulsed monochloramines to goldfish (carassius auratus).		1980	7459458
periovulatory changes in serum cortisol levels in the goldfish, carassius auratus.		1980	7372097
electroencephalographic studies on arousal in the goldfish (carassius auratus).	goldfish with implanted intracranial electroencephalographic (eeg) electrodes showed high-voltage slow activity of 6-9 hz and a low-voltage fast activity of 16-24 hz when resting in the dark. the former frequency was prevalent in the telencephalon, diencephalon, and midbrain but remained only in parts of the midbrain and cerebellum when the fish was left resting in an illuminated environment. in this latter condition the 16-24 hz activity became predominant. presentation of two stimuli, the onse ...	1980	7364997
the origins of the centrifugal fibers to the olfactory bulb in the goldfish, carassius auratus: an experimental study using the fluorescent dye primuline as a retrograde tracer.	the origin of the centrifugal fibers to the olfactory bulb in the goldfish was examined by injecting a fluorescent dye, primuline, into the olfactory bulb by means of hydraulic pressure. three to five days after the primuline injection, which was confined to the unilateral olfactory bulb, a large number of primuline-labeled perikarya appeared in two telencephalic areas on the ipsilateral side: the area ventralis telencephali pars dorsalis (vd) and the ventral part of the area dorsalis telencepha ...	1980	7357427
effects of pinealectomy and melatonin treatment on growth in the goldfish, carassius auratus.		1980	7364214
continued in vitro growth of fibroblast-like cells (rbcf-1) derived from the caudal fin of the fish, carassius auratus.		1980	7409028
effect of sodium selenite & selenomethionine on the accumulation & acute toxicity of mercuric & methylmercuric chloride in the goldfish carassius auratus.		1980	7399588
behaviour of some radioactive compounds of mercury & selenium in aquarium water & their direct uptake by the goldfish carassius auratus.		1980	7399585
[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
carassius auratus gibelio: the prussian carp as a model for the stenohaline freshwater teleost.		1980	7379533
the effects of lithium chloride on spontaneous alternation behaviour in the goldfish (carassius auratus).	spontaneous alternation behaviour of goldfish was observed in a two-unit t maze. whilst significant degrees of alternation occurred under both lithium and sodium treatment, alternation under lithium was significantly lower than under sodium. in a second experiment it was shown that lithium increased the amount of random or erratic behaviour demonstrated by fish. the effects of lithium on spontaneous alternation were fully explained by a lithium-induced increase in randomness of activity, without ...	1980	7354909
ultrastructural localization of delta 5-3 beta-hydroxysteroid dehydrogenase in the interrenal cells of the goldfisch (carassius auratus).	the ultrastructural localization of the enzyme delta 5-3 beta-hydroxysteroid dehydrogenase (3 beta-hsd) was studied in the goldfish interrenal cells by using the potassium ferricyanide method. immersion fixation in a mixture of 1% paraformaldehyde and 0.25% glutaraldehyde results in a consistently good ultrastructural preservation and enzyme localization. a precipitate of copper ferrocyanide indicating the localization of 3 beta-hsd activity was observed in close vicinity to the smooth endoplasm ...	1980	6933018
androgen biosynthesis by testes of the goldfish carassius auratus in vitro: the effect of temperature on the formation of steroid glucuronides.		1980	7419044
histogenesis of the goldfish retina.	the order of production of retinal cells was studied in embryos of the goldfish, carassius auratus, using 3h-thymidine autoradiography. cell division ceases first in the neuroepithelium at the fundus of the eye between embryonic stages 19 and 20 and gradually becomes restricted to the retinal margin by stage 24. in the fundus the cells whose nuclei will reside in the inner layer of the retina stop dividing earlier than the cells whose nuclei will reside in the outer retinal layers. thus the gang ...	1980	7410599
rod and cone inputs to bipolar cells in goldfish retina.	five morphological types of bipolar cells which make synaptic contact with rods and cones are distinguished in the retina of adult goldfish (carassius auratus) by characteristics readily observable in the light microscope. cells were designated type a or type b according to whether their axons terminate in the distal part (sublamina a) or proximal part (sublamina b) of the inner plexoform layer, respectively. analysis of serial semi-thin sections of golgi-impregnated cells demonstrates that each ...	1980	7410596
physiological changes observed in the goldfish (carassius auratus) during behavioral arousal and fright.		1980	7387594
brain lesions and short-term endocrine effects of monosodium l-glutamate in goldfish, carassius auratus.	monosodium l-glutamate (msg) was injected intraperitoneally into goldfish at a dosage of 2.5 mg/g body weight. at 24 h post-injection there was a marked hypertrophy and edema in the region of the nucleus lateralis tuberis (nlt) from the anterior margin of the pituitary stalk through to the posterior end of the nlt, irrespective of the sex of the goldfish. a similar hypertrophy and edema occurred ventral to the anterior commissure in the preoptic region in the anterior-ventral nucleus preopticus ...	1980	7459988
the effects of lithrium on the development of alcohol tolerance in carassius auratus.		1980	7429745
evidence for two secretory cell types in the stannius bodies of the teleosts fundulus heteroclitus and carassius auratus.	the stannius bodies of killifish and goldfish were ultrastructurally investigated after exposure of the fish to media of different osmolality and calcium content. in both species two structurally different secretory cell types are found. type-1 cells predominate. they contain an extensive granular endoplasmic reticulum, some large golgi areas, and secretory granules with a mean diameter of about 0.4 micron. these cells are activated by transfer of freshwater fish to seawater, but not by transfer ...	1980	7428033
[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
the effect of temperature on the hepatic catabolism of testosterone in the rainbow trout (salmo gairdneri) and the goldfish (carassius auratus).		1980	6777240
effects of lithium chloride on lateral line responses in carassius auratus.		1980	6253837
retinal ganglion cell response to nerve growth factor in the regenerating and intact visual system of the goldfish (carassius auratus).	light and electron microscopic observations indicated that 1 microgram ngf injected into the goldfish eye at the time of optic nerve crush initiated significant retinal ganglion cell body, nuclear and nucleolar hypertrophy when compared to controls at 7 days post-axotomy (7 dpa). in addition, the ultrastructural morphometric values for ngf-treated retinal ganglion cells at 7 dpa were not significantly different from the normal hypertrophy found in 14 dpa controls. therefore, it appears that ngf ...	1980	7407558
[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
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 salmon gonadotrophin (sg-g100) on plasma lipids in the goldfish. carassius auratus.		1980	7427820
photoperiod effects on carbohydrate metabolites in the goldfish, carassius auratus: role of the pineal and retinal pathways.	the effects of exposure to various photoregimes or to constant darkness on liver glycogen and plasma glucose levels in the goldfish were examined during different seasons. in addition, pinealectomized fish and optic nerve sectioned fish were exposed to the photoregimes to assess the potential role of the pineal organ and retinal pathways in mediating photoperiod effects. neither photoperiod manipulation nor exposure to constant darkness affected liver glycogen levels in experiments conducted dur ...	1980	7465877
the metabolism of gonadotropin in goldfish, carassius auratus: tissue uptake and distribution during the reproductive cycle.		1980	7409470
plasma clearance of gonadotropin in goldfish, carassius auratus, during the annual reproductive cycle.		1980	7409468
involvement of the preoptic region in gonadotropin release-inhibition in goldfish, carassius auratus.	lesions were made in various hypothalamic and preoptic regions in sexually mature female and male goldfish. destruction of the pituitary stalk, and lateral anterior hypothalamic tract areas caused ovulation and increased serum gonadotropin levels. destruction of the entire preoptic region or a major part of the anterior nucleus preopticus periventricularis also caused ovulation and increased serum gth levels. lesions in other locations were ineffective. the results indicate that a gonadotropin r ...	1980	7393408
fine structural characteristics of the hepatic sinusoidal walls of the goldfish (carassius auratus).	fine structural characteristics of hepatic sinusoidal walls of the goldfish were described. kupffer's stellate cells (macrophages) are few in number in the sinusoidal endothelial lining of this fish. very rarely macrophages, whose small cytoplasmic protrusion is sometimes inserted between two endothelial cells, are localized in the sinusoidal lumen in contact with the endothelial cell. typical desmosomes are frequently seen between the two endothelial cells, between the endothelial cell and the ...	1980	7192975
effects of sex steroids on plasma lipids in the goldfish, carassius auratus.		1980	7427821
retinal ganglion cell response to axotomy and nerve growth factor antiserum treatment in the regenerating visual system of the goldfish (carassius auratus): an in vivo and in vitro analysis.	in vitro nerve growth factor (ngf) antiserum (anti-ngf) treatment was found to significantly depress retinal ganglion cell neurite outgrowth in goldfish explant culture. goldfish retinas, conditioned by a 14-day prior optic nerve crush, demonstrated a significant dose response inhibition of neurite outgrowth if incubated with various concentrations of the antiserum (i.e. concentrations from full strength to 1:100) before explantation for tissue culture. ngf added to the incubation medium contain ...	1981	7459632
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). iii. three-dimensional structure of the ruffed cell dendrite.	the three-dimensional structure of the ruffed cell dendrite in the olfactory bulb of the goldfish (carassius auratus) was studied by means of light and high-voltage electron microscopy of golgi-impregnated material, combined golgi-electron microscopy, and electron microscopy of serial thin sections. ruffed cell dendrites ramify in the glomerular area with tufted branching patterns. they give rise to many appendages of various shapes and sizes: sheetlike processes, fingerlike projections, or smal ...	1981	7287936
characterization of and hormonal effects on subcellular fractions from xanthophores of the goldfish carassius auratus l.		1981	6272788
seasonal differences in brain activity and responsiveness shown by the goldfish, (carassius auratus).		1981	7283929