Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| hypothalamic inferior lobe and lateral torus connections in a percomorph teleost, the red cichlid (hemichromis lifalili). | the neuroanatomic connections of the inferior lobe and the lateral torus of the percomorph hemichromis lifalili were investigated by 1,1', dioctadecyl-3,3,3',3'-tetramethylindo-carbocyanine perchlorate (dii) tracing. the inferior lobe and the lateral torus both receive afferents from the secondary gustatory nucleus. additional afferents reach the inferior lobe from the nucleus glomerulosus, nucleus suprachiasmaticus, dorsal and central posterior thalamic nucleus, nucleus lateralis valvulae, magn ... | 2002 | 12115692 |
| flow cytometry measurement of the dna contents of g0/g1 diploid cells from three different teleost fish species. | although there is a lot information in the literature about genome size in fish, a high variability among data for the same species is reported, being mainly related to methodological aspects. flow cytometry-based fluorescence measurements of intercalating dyes is the most attractive approach due to its precision, objectivity, high speed, and relative simplicity. | 2002 | 12116377 |
| screen for stage-specific expression genes between tail bud stage and heartbeat beginning stage in embryogenesis of gynogenetic silver crucian carp. | a systemic study was initiated to identify stage-specific expression genes in fish embryogenesis by using suppression subtractive hybridization (ssh) technique. in this study, we presented a preliminary result on screen for stage-specific expression genes between tail bud stage (tbs) and heartbeat beginning stage (hbs) in gynogenetic silver crucian carp (carassius auratus gibelio). two ssh plasmid libraries specific for tbs embryos and hbs embryos were constructed, and stage-specific expression ... | 2002 | 12118939 |
| a cryptic clonal line of the loach misgurnus anguillicaudatus (teleostei: cobitidae) evidenced by induced gynogenesis, interspecific hybridization, microsatellite genotyping and multilocus dna fingerprinting. | in memanbetsu town, hokkaido island, japan, a high frequency of natural triploid loaches misgurnus anguillicaudatus (7.4% on average) was detected by flow cytometry for relative dna content. among sympatric diploid females (n=6) from a single population, we found two unique females that laid unreduced diploid eggs. they gave normal diploid progeny even after induction of gynogenesis with genetically inert uv-irradiated sperm. when fertilized with normal loach sperm, some unreduced eggs developed ... | 2002 | 12130809 |
| the possible mechanisms of stimulation of cyanobacterium growth by the passage through the carassius auratus intestine: an experimental study. | 2002 | 12134490 | |
| brain hsp70 mrna expression is linked with plasma cortisol levels in goldfish (carassius auratus) exposed to a potential predator. | we previously found that when goldfish were exposed to a potential predator, bluegills, the goldfish experienced an increase in hsp70 mrna expression in the brains and increased plasma cortisol levels. in the present study, we examined the potential causative relationship between hsp70 mrna expression and plasma cortisol levels. cortisol agonists (corticotropin releasing factor and cortisol) and antagonists (metyrapone and betamethasone) were used to modulate plasma cortisol levels. hsp70 mrna e ... | 2002 | 12149573 |
| olfactory sensitivity to changes in environmental [ca(2+)] in the freshwater teleost carassius auratus: an olfactory role for the ca(2+)-sensing receptor? | olfactory sensitivity to changes in environmental ca(2+) has been demonstrated in two teleost species; a salmonid (oncorhynchus nerka) and a marine/estuarine perciform (sparus aurata). to assess whether this phenomenon is restricted to species that normally experience large fluctuations in external ion concentrations (e.g. moving from sea water to fresh water) or is present in a much wider range of species, we investigated olfactory ca(2+) sensitivity in the goldfish (carassius auratus), which i ... | 2002 | 12177141 |
| a major substrate for mpf: cdna cloning and expression of polypeptide chain elongation factor 1 gamma from goldfish (carassius auratus). | one of the eukaryotic polypeptide chain elongation factors, ef-1 beta gamma delta complex, is involved in polypeptide chain elongation via the gdp/gtp exchange activity of ef-1 alpha. in the complex, ef-1 gamma has been reported to be a major substrate for maturation promoting factor (mpf). here, we present the cloning, sequencing and expression analysis of goldfish, carassius auratus, ef-1 gamma from the goldfish ovary. the cloned cdna was 1490 bp in length and encoded 442 amino acids. the dedu ... | 2002 | 12180134 |
| first record of neoergasilus japonicus (poecilostomatoida: ergasilidae), a parasitic copepod new to the laurentian great lakes. | the parasitic copepod neoergasilus japonicus, native to eastern asia, was first collected from 4 species of fish (fathead minnow, pimephales promelas; largemouth bass, micropterus salmoides; pumpkinseed sunfish, lepomis gibbosus; and yellow perch, perca flavescens) in july 1994 in saginaw bay, lake huron, michigan. further sampling in the bay in 2001 revealed infections on 7 additional species (bluegill, lepomis macrochirus; carp, cyprinus carpio; channel catfish, ictalurus punctatus; goldfish, ... | 2002 | 12197110 |
| possible disruption of pheromonal communication by humic acid in the goldfish, carassius auratus. | humic acids are large, complex, organic molecules which are ubiquitous components of aquatic environments as products of degradation of plant material. in aqueous solution they form microvesicles. as many teleost pheromones are steroidal in nature, we hypothesised that they would preferentially dissolve in the organic, hydrophobic core of these vesicles instead of in water and therefore be unavailable for detection. this would have obvious and profound effects on many aspects of fish biology. to ... | 2002 | 12200084 |
| lateral line reception in still- and running water. | the lateral line of fish is composed of neuromasts used to detect water motions. neuromasts occur as superficial neuromasts on the skin and as canal neuromasts in subepidermal canals. fibres of the lateral line nerves innervate both. there have been extensive studies on the responses of lateral line nerve fibres to dipole stimuli applied in still water. however, despite the fact that many fish live in rivers and/or swim constantly, responses of lateral line nerve fibres to dipole stimuli present ... | 2002 | 12209340 |
| distribution of gfap immunoreactive structures in the rhombencephalon of the sterlet (acipenser ruthenus) and its evolutionary implication. | previous studies have revealed that although the brains of cypriniform teleosts (iberian barb, barbus comiza; carp, cyprinus carpio; goldfish, carassius auratus) are rich in glial fibrillary acidic protein (gfap), they have, however, areas devoid of gfap immunoreactivity. the largest ones of these are in the rhombencephalon, e.g., the zones of the sensory and motor neurons in the vagal lobe. our studies in amniotes suggested that the gfap immunonegative areas could be characteristic of the more ... | 2002 | 12210122 |
| efferent connections of the cerebellum of the goldfish, carassius auratus. | efferent fiber connections of the corpus and valvula cerebelli in the goldfish, carassius auratus, were studied using an anterograde neural fiber tracing technique. efferent targets of the corpus cerebelli are the posterior parvocellular preoptic nucleus, the ventromedial and ventrolateral thalamic nucleus, dorsal posterior thalamic nucleus, periventricular nucleus of posterior tuberculum, dorsal periventricular pretectal nucleus, inferior lobe, optic tectum, torus semicircularis, nucleus of the ... | 2002 | 12239469 |
| morphological studies on the mechanisms of pigmentary organelle transport in fish xanthophores and melanophores. | pigmentary organelle translocations within fish chromatophores undergo physiological color changes when exposed to external signals. chromatophores can be isolated in high yields, and their pigmentary organelles can be tracked readily by microscopy. the combined efforts of morphology and biomolecular chemistry have led to the identification of and determination of the interrelationships between cytoskeletal elements and accessory proteins, motor molecules, cytomatrix, and pigmentary organelles o ... | 2002 | 12242704 |
| relationships between persistent organic chemicals residues and biochemical constituents in fish from a protected area: the french national nature reserve of camargue. | the reserve of biosphere of camargue [french national nature reserve of camargue (nnrc)] is a protected area frequently exposed to natural and anthropogenic environmental alterations. to evaluate potential contamination of fish with lipophilic chemicals-organochlorines (ocs) and polycyclic aromatic hydrocarbons (pahs)-a biological monitoring survey was carried out. metabolic reserve levels were evaluated to select appropriate biological indicators able to be significant biomarkers. in addition, ... | 2002 | 12379424 |
| in vitro uptake and metabolism of testosterone by goldfish, carassius auratus, mesenteric adipose tissue. | mesenteric adipose tissue was removed from adult goldfish, carassius auratus, and incubated in vitro with (1alpha,2alpha)-3[h]testosterone (t). total radioactivity in the medium decreased and tissue total radioactivity increased in a time-dependent fashion between 1 and 6 h of incubation with maximum uptake occurring between 4 and 6 h. after ether extraction and thin layer chromatography the amount of radioactivity comigrating with authentic t standard decreased over time in both medium and tiss ... | 2002 | 12383447 |
| cloning and sequencing of wee1 from the ovary of the gynogenetic japanese silver crucian carp (ginbuna) [carassius auratus langsdorfi]. | wee1 is one of the genes which regulates the cell cycle. cdna encoding a wee1-homolog has been isolated from japanese silver crucian carp (ginbuna) by using polymerase chain reaction (pcr) techniques. the cdna obtained from the ovary tissue encoded a protein of 526 amino acids and the deduced amino acid sequence showed high homology (69.9%) with xenopus laevis wee1 in the protein kinase domain. a phylogenetic analysis among wee1 amino acid sequences from various organisms showed that the crucian ... | 2002 | 12391727 |
| natural antibodies and their significance in active immunization and protection against a defined pathogen in fish. | natural antibody activity against aeromonas salmonicida extracellular a-layer protein (a-protein) showed large individual variations in a farmed group of 101 goldfish (carassius auratus l.). statistical analyses of these variations led us to divide this group into homogeneous high and low naturally active (hna and lna) subgroups. the hna fish were largely protected against experimental infection with a virulent atypical a. salmonicida strain, while 100% morbidity was recorded in the lna group. i ... | 2002 | 12399194 |
| karyotypic diversity in polyploid gibel carp, carassius auratus gibelio bloch. | polyploid gibel carp, carassius auratus gibelio, is an excellent model system for evolutionary genetics owing to its specific genetic background and reproductive modes. comparative karyotype studies were performed in three cultured clones, one artificially manipulated group, and one mated group between two clones. both the clones a and p had 156 chromosomes in their karyotypes, with 36 metacentric, 54 submetacentric, 36 subtelocentric, 24 acrocentric, and six small chromosomes. the karyotype of ... | 2002 | 12403177 |
| factors affecting the efficiency of somatic cell nuclear transplantation in the fish embryo. | procedures to improve somatic cell nuclear transplantation in fish were evaluated. we reported effects of nonirradiated recipient eggs, inactivated recipient eggs, different combinations between recipient eggs and donor cells, duration of serum starvation, generation number, and passage number of donor cells on developmental rates of nuclear transplant (nt) embryos. exposure to 25,000 r of gamma-rays inactivated recipient eggs. single nucleus of cultured, synchronized somatic cell from gynogenet ... | 2002 | 12410600 |
| molecular cloning of the fish interferon stimulated gene, 15 kda (isg15) orthologue: a ubiquitin-like gene induced by nephrotoxic damage. | in mammals, the response to nephrotoxicant-induced renal injury is limited to repair of the proximal tubule by surviving epithelial cells. in contrast, bony fish are capable of both repair, and de novo production of nephrons in response to renal damage. importantly, toxicant-induced nephron neogenesis in goldfish (carassius auratus) parallels nephron development in the mammalian embryo, providing a vertebrate model for kidney development. we utilized this model system to identify genes induced b ... | 2002 | 12426101 |
| isolation and structure-function studies of a glucagon-like peptide 1 receptor from goldfish carassius auratus: identification of three charged residues in extracellular domains critical for receptor function. | a better understanding of the molecular mechanism of ligand-receptor interaction of glucagon-like peptide 1 (glp-1) receptors (glp-1rs) is useful for the design of potent glp-1 analogs that could potentially be used as a treatment for diabetic patients. changes in the ligand and receptor sequences during evolution provide invaluable clues to evaluate the functional motifs of the receptor that are responsible for ligand interaction. for these reasons, in the present study, we have isolated and fu ... | 2002 | 12446592 |
| [mitochondrial dna variation in goldfish carassius auratus gibelio from water reservoirs in the far east]. | mtdna variation of goldfish samples from several water bodies of southern primorye was examined by rflp analysis. high mtdna polymorphism was found in the river populations but not in the lake ones. considerable among-haplotype divergence was found within samples, which suggests periodic gene exchange between populations having long histories of independent evolution. the absence of substantial differences between clusters of mtdna haplotypes indicates recurrent transfer from bisexual to gynogen ... | 2002 | 12449649 |
| fluorescein: a rapid, sensitive, nonlethal method for detecting skin ulceration in fish. | there is a need to develop simple, rapid, and accurate methods for assessing health in fish populations. in this study we demonstrate that use of fluorescein, a nontoxic fluorescent dye, can rapidly and easily detect the presence of skin ulcers in all fish tested, including rainbow trout (oncorhynchus mykiss), channel catfish (ictalurus punctatus), goldfish (carassius auratus), and hybrid striped bass (morone saxatilis male x m. chrysops female). exposure of fish to as little as 0.10 mg fluoresc ... | 2002 | 12450204 |
| circadian variation of brain histamine in goldfish. | teleosts may make an excellent model to study brain histamine function. fishes are phylogenetically closer to the basic vertebrate blueprint than higher vertebrates. they appear to have a simpler histaminergic system in terms of central nervous system distribution and, contrary to higher vertebrates, brain histamine appears to be strictly neuronal. in this preliminary study, we examined circadian variation of brain histamine in goldfish, carassius auratus, as this neurotransmitter correlates wit ... | 2003 | 12464402 |
| effects of a red-tide toxin on fish hearing. | red tides are formed from blooms of marine algae. among them, the dinoflagellate ( karenia brevis) that is responsible for florida red tides can release many types of natural toxins, which cause massive kills of marine animals, including endangered species, and threaten human health. this study was to investigate whether or not a neurotoxin, brevetoxin-3, purified from florida red tides affects hearing sensitivity of a teleost fish, the goldfish ( carassius auratus). ld(50) of the goldfish that ... | 2002 | 12466956 |
| physiologic ph changes modulate calcium ion dependence of brain nitric oxide synthase in carassius auratus. | species of the fish genus carassius survive prolonged anoxia. nitric oxide (no) regulates cerebral blood flow in these fish during normoxic conditions whereas adenosine is the main vasoregulating molecule during anoxia. we investigated the calcium ion dependence of carassius auratus brain no synthase (nos) as a function of ph. the physiological ph decrease from 7.2 to 6.8, which takes place during anoxia, greatly decreases nos activity. this strong ph dependence is mainly due to variation of the ... | 2003 | 12495813 |
| volumetric and ionic responses of goldfish hepatocytes to anisotonic exposure and energetic limitation. | the relationship between cell volume and k(+) transmembrane fluxes of goldfish (carassius auratus) hepatocytes exposed to anisotonic conditions or energetic limitation was studied and compared with the response of hepatocytes from trout (oncorhynchus mykiss) and rat (rattus rattus). cell volume was studied by video- and fluorescence microscopy, while k(+) fluxes were assessed by measuring unidirectional (86)rb(+) fluxes. in trout and rat hepatocytes, hyposmotic (180 mosmoll(-1)) exposure at ph 7 ... | 2003 | 12502772 |
| cyclin a2 is differentially expressed during oocyte maturation between gynogenetic silver crucian carp and gonochoristic color crucian carp. | silver crucian carp (carassius auratus gibelio) is a unique gynogenetic fish. because of its specific genetic background and reproduction mode, it is an intriguing model system for understanding regulatory mechanism of oocyte maturation division. it keeps its chromosomal integrity by inhibiting the first meiotic division (no extrusion of the first pole body). the spindle behavior during oocyte maturation is significantly different from that in gonochoristic fish. the chromosomes are first arrang ... | 2003 | 12506399 |
| in vitro metabolism of fenthion and fenthion sulfoxide by liver preparations of sea bream, goldfish, and rats. | the in vitro metabolism of fenthion and its sulfoxide (fenthion sulfoxide) in sea bream (pagrus major) and goldfish (carassius auratus) was investigated and compared with that in rats. fenthion was oxidized to fenthion sulfoxide and the oxon derivative, but not to its sulfone, in the presence of nadph by liver microsomes of sea bream, goldfish, and rats. these liver microsomal activities of the fish were lower than those of rats but were of the same order of magnitude. the nadph-linked oxon- and ... | 2003 | 12527698 |
| deriving freshwater quality criteria for 2,4-dichlorophenol for protection of aquatic life in china. | freshwater quality criteria for 2,4-dichlorophenol (2,4-dcp) were developed with particular reference to the aquatic biota in china, and based on usepa's guidelines. acute toxicity tests were performed on nine different domestic species indigenous to china to determine 48-h lc50 and 96-h lc50 values for 2,4-dcp. in addition, 21 day survival-reproduction tests with daphnia magna, 30-day embryo-larval tests with carassius auratus, 60 day fry-juvenile test with ctenopharyngodon idellus, 30 d early ... | 2003 | 12531309 |
| comparisons of calcium regulation in fish larvae. | the purpose of the present study was to compare the ability of larvae of different species, goldfish (carassius auratus), zebrafish (danio rerio), and ayu (plecoglossus altivelis), to regulate their calcium balance. whole-body ca(2+) content and ca(2+) influx in the larvae of the three species, which were incubated in low- (0.02 mm), mid- (0.2 mm), and high- (2.0 mm) ca(2+) artificial fresh water from embryonic stages, were compared. the ca(2+) uptake kinetics were determined in zebrafish and go ... | 2003 | 12541296 |
| [studies on genetic diversity in gonochoristic offspring produced from mating between two different gynogenetic clones of silver crucian carp]. | based on the discovery of gonochoristic reproductive mode in silver crucian carp (carassius auratus gibelio), 18 individuals from the mated offspring between clone f and clone d and their parents were analyzed using 11 rapd primers. the mated offspring differentiated into three phenotypes. one phenotype is similar to that of clone f (sf). the second is similar to that of clone d (sd). the third shows a novel longer and thinner body type (nl). electrophoretogram results show abundant polymorhic d ... | 2001 | 12549217 |
| physiological responses of carassius auratus to ytterbium exposure. | physiological and biochemical perturbations in the liver of carassius auratus were investigated in vivo following 40 days of exposure to ytterbium solutions of different concentration. glutamate-pyruvate transaminase (gpt) activity in goldfish liver was stimulated at 0.05 mg/l yb3+ and inhibited at higher yb3+ concentrations. activity of the antioxidant enzyme superoxide dismutase (sod) was stimulated at yb3+ higher than 0.05 mg/l, and catalase (cat) activity was strongly inhibited after 40 days ... | 2002 | 12568469 |
| effects of a phytosterol mixture on male fish plasma lipoprotein fractions and testis p450scc activity. | plant sterols (phytosterols) have been identified as one potential source of reproductive effects in fish living downstream of pulp mills. beta-sitosterol, the predominant plant sterol in pulp mill effluent, has previously been shown to decrease plasma sex steroid and cholesterol levels and in vitro gonadal steroid production in fish. in this study, male brook trout (salvelinus fontinalis) and goldfish (carassius auratus) were exposed to a phytosterol mixture (72% beta-sitosterol) via silastic i ... | 2003 | 12568795 |
| the effects of pulp mill effluent on the sex steroid binding protein in white sucker (catostomus commersoni) and longnose sucker (c catostomus). | the objective of this study was to characterize the effects of pulp mill effluent on the properties of the sex steroid binding protein (sbp) in the plasma of white sucker (catostomus commersoni) and longnose sucker (c. catostomus). sbps which specifically bind estradiol and testosterone with high affinity (k(d) approximately 3 nm) and low capacity (b(max) approximately 73-81 nm) were identified in both species. subsequent studies determined if the properties of the sbp in white sucker exposed to ... | 2003 | 12600684 |
| reproduction mode of an artificial allotetraploid carp (pisces; cyprinidae). | mature eggs of allotetraploid carp were activated by inactive sperm or crossed with normal sperms of common carp (cyprinus carpio), crucian carp (carassius auratus), chinese blunt snout bream (megalobrama amblycephala), hemiculter leucisculus and pseudorasbora parva. chromosome counts showed that all offspring of these crosses presented a mode number of 200 chromosomes (4n = 200), and their morphological traits are much like maternal. microsatelite marker and rapd patterns between allotetraploid ... | 2002 | 12627840 |
| polyamines as olfactory stimuli in the goldfish carassius auratus. | electrophysiological responses of goldfish olfactory receptor neurons (orns) and goldfish behavioral responses to polyamines were investigated in vivo. electro-olfactogram (eog) recordings indicated that polyamines (putrescine, cadaverine and spermine) are potent olfactory stimuli for goldfish with estimated electrophysiological thresholds of 10(-8)-10(-7) mol l(-1), similar to that for l-arginine, the most stimulatory amino acid. although thresholds were similar, the magnitude of the eog respon ... | 2003 | 12682100 |
| uptake and accumulation of mercury from dental amalgam in the common goldfish, carassius auratus. | in this study, the bioavailability and accumulation of mercury from external environmental exposure to mixed, cured, milled, sieved and proportioned dental amalgam was examined in the common goldfish, carassius auratus. fish were exposed to dental amalgam (particle size range from < 0.10 to 3.15 mm) in order to represent the particle size and distribution of that found within the typical dental office wastewater discharge stream. experimental amalgam water loadings were 0 g/l, 0.5 g/l and 1 g/l ... | 2003 | 12685760 |
| transferrin and the innate immune response of fish: identification of a novel mechanism of macrophage activation. | we have previously demonstrated that a non-cytokine serum protein called transferrin was a primary activating molecule of the goldfish (carassius auratus) macrophage antimicrobial response. the ability of the enzymatically cleaved forms of this protein to modulate fish macrophage function is novel and may represent a primitive and evolutionary conserved mechanism for the induction of no response of macrophages. in the present study we confirm our earlier findings using immunoaffinity purified go ... | 2003 | 12697311 |
| role of leptin in the control of feeding of goldfish carassius auratus: interactions with cholecystokinin, neuropeptide y and orexin a, and modulation by fasting. | to assess the role of leptin on food intake regulation in goldfish, we examined the effects of central (intracerebroventricular, icv) and peripheral (intraperitoneal, ip) injections of recombinant murine leptin on feeding behavior. centrally (100 ng/g) and peripherally (300 ng/g) injected leptin both caused a significant decrease in food intake, compared to the saline-treated controls. to test the hypothesis that leptin influenced orexigenic neuropeptide systems in goldfish, fish were co-injecte ... | 2003 | 12711082 |
| olfactory sensitivity to catecholamines and their metabolites in the goldfish. | the current study assessed the olfactory sensitivity of the goldfish (carassius auratus l.) to the catecholamines, their immediate precursors and metabolites by use of the electro-olfactogram (eog). the olfactory system of the goldfish was found to be sensitive to both adrenaline and dopamine with thresholds of detection of 10(-7.8) and 10(-7.9) m respectively, but less so to noradrenaline (threshold of detection 10(-6.3) m). the 3-o-methoxy metabolites (metadrenaline, normetadrenaline and 3-o-m ... | 2003 | 12714443 |
| deriving freshwater quality criteria for 2,4,6-trichlorophenol for protection of aquatic life in china. | freshwater quality criteria of 2,4,6-trichlorophenol (2,4,6-tcp) were developed with particular reference to the aquatic biota in china, and based on usepa's guidelines. acute toxicity tests were performed on nine different domestic species indigenous to china to determine 48 h lc(50) and 96 h lc(50) values for 2,4,6-tcp. in addition, 21 d survival-reproduction test with daphnia magna, 30 d embryo-larval test with carassius auratus, 60 d fry-juvenile test with ctenopharyngodon idellus, 30 d earl ... | 2003 | 12729688 |
| infection in the fins of the goldfish carassius auratus caused by myxobolus diversus (myxosporea). | during health surveys of 7- to 9-week-old goldfish (carassius auratus l.) fingerlings in a fish farm near budapest, hungary, myxosporean plasmodia were observed on the fins. plasmodia were most frequently found at the intersegmental joints of the finrays. spores of myxobolus diversus nie et li, 1973 known from china, were detectable in the mature plasmodia located within the lumen, and less often on the surface, of the cartilaginous finrays. the external wall of the plasmodia was constituted by ... | 2003 | 12735721 |
| parasitic infections in freshwater ornamental fish in sri lanka. | a total of 1520 ornamental fish of 13 species from 26 export farms in sri lanka were collected between october 1999 and march 2000 and examined for parasites. fish species examined were guppy poecilia reticulata, goldfish carassius auratus, platy xiphophorus maculatus, molly poecilia sphenops, angel pterophyllum scalare, swordtail xiphophorus helleri, tetras hyphessobrycon species, barbs capeota and puntius spp., gourami colisa sp., carp cyprinus carpio, fighters betta spelendens and others (bra ... | 2003 | 12747641 |
| detection of myxobolus rotundus (myxozoa: myxosporea) in skin mucus of crucian carp carassius auratus auratus using a monoclonal antibody. | diagnosis of myxosporean myxobolus rotundus infection was conducted by examining skin mucus from the infected crucian carp carassius auratus auratus with a monoclonal antibody, mab 2d12, raised previously against the parasite. a positive reaction was observed in skin mucus collected from infected fish, and spores and pre-spore stages of the parasite were identified by the mab 2d12. it was also demonstrated that m. rotundus infection can be successfully detected by a simple method, enzyme-linked ... | 2003 | 12747643 |
| hepatic accumulation and effects of microcystin-lr on juvenile goldfish carassius auratus l. | after intraperitoneal injection of microcystin-lr (mc-lr) (125 microg kg(-1) body wt.), the concentration of mc-lr in the liver of juvenile goldfish carassius auratus (30 g body wt.) was assayed by a modified protein phosphatase inhibition method. a temporary accumulation occurred from 3 to 48 h post-injection, followed by a significant decrease between 48 and 96 h. under our experimental conditions, contamination by mc-lr did not change ionic homeostasis, as attested by blood osmolality values ... | 2003 | 12781839 |
| effects of running water on lateral line responses to moving objects. | we investigated in goldfish, carassius auratus, and trout, oncorhynchus mykiss, how running water affects the responses of afferent fibers in the posterior lateral line nerve and of lateral line units in the brainstem medial octavolateralis nucleus to an object that is moved from anterior to posterior or opposite along the side of the fish. in still water, nerve fibers in both species responded to the moving object with alternating periods of increased and decreased firing rate. most fibers in g ... | 2003 | 12784057 |
| nitrate removal in aquariums by immobilized pseudomonas. | biological denitrification of nitrate to nitrogen gas was examined in a freshwater and a marine aquarium. nitrate removal in the aquarium water was accomplished with denitrifiers immobilized in a freeze-dried, alginate-starch matrix. starch served as a bacterial carbon source and cellular matrix-strengthening filler. freeze-dried beads were placed in canisters through which nitrate-rich aquarium water was recirculated. the freshwater aquarium (100 l) contained goldfish (carassius auratus) at a t ... | 2003 | 12790671 |
| the role of telencephalic nmda receptors in avoidance learning in goldfish (carassius auratus). | studies with goldfish (carassius auratus) have suggested that n-methyl-d-aspartate (nmda) receptors are concentrated most densely in the telencephalon, a simple structure homologous to the limbic structure of higher vertebrates. the present study investigated the amnestic effects of microinjections of the nmda receptor antagonist d(-)-2-amino-5-phosphonopentanoic acid (d-ap5) to the goldfish telencephalon on avoidance conditioning. results showed that microinjections of d-ap5 before training imp ... | 2003 | 12802883 |
| [effect of adrenaline on amylolytic activity of intestinal mucose, glycemia level, glycogen concentration in tissues of carp carassius auratus and carp carassius carassius]. | 2013 | 12815969 | |
| neuromuscular transmission of pectoral fin muscles of the goldfish carassius auratus. | the electrical properties and neuromuscular transmission of white and red fibers of pectoral fin muscles of the goldfish carassius auratus were studied using an intracellular recording technique. the pectoral fin muscles consist mainly of white and red fibers. almost all of white fibers elicited action potentials with overshoot by direct stimulation, but graded responses appeared in the red fibers. however, overshooting action potentials were often recorded from the red fibers in saline containi ... | 2003 | 12829051 |
| in vivo and in vitro assessment of the androgenic potential of a pulp and paper mill effluent. | the androgenic potential of a new zealand pulp and paper mill effluent was measured by applying a combination of in vitro and in vivo bioassays with mosquitofish (gambusia affinis) and goldfish (carassius auratus). the in vivo method assessed the rate of gonopodial development (masculinization) and alterations from normal reproductive behavior in adult female mosquitofish exposed for 21 d to untreated or secondary-treated pulp mill effluent. a second in vivo mosquitofish exposure tested the effe ... | 2003 | 12836968 |
| group ii metabotropic glutamate receptors regulate the vulnerability to hypoxic brain damage. | we examined the expression of metabotropic glutamate (mglu) receptors in species of fish that differ for their vulnerability to anoxic brain damage. although expression of mglu1a and mglu5 receptors was similar in the brain of all species examined, expression of mglu2/3 receptors was substantially higher in the brain of anoxia-tolerant species (i.e., the carp carassius carassius and the goldfish carassius auratus) than in the brain of species that are highly vulnerable to anoxic damage, such as ... | 2003 | 12853420 |
| comparative studies on in vitro sperm decondensation and pronucleus formation in egg extracts between gynogenetic and bisexual fish. | a cell-free system based upon the egg extracts from gynogenetic gibel carp (carassius auratus gibelio) or bisexual red common carp (cyprinus carpio red variety) was developed to investigate developmental behaviors of the demembranated sperm nuclei. both red common carp and gibel carp sperm nuclei could decondense fully and form pronuclei in the red common carp egg extracts. gibel carp sperm nuclei could also decondense fully and form pronuclei in the gibel carp egg extracts, but red common carp ... | 2003 | 12862316 |
| circadian variations of melatonin binding sites in the goldfish brain. | daily and circadian variations in melatonin binding sites in the brain of goldfish (carassius auratus) were examined by radioreceptor assay. under light-dark cycles of 12:12 h, the density (b(max)) of melatonin binding sites in the brain exhibited daily variations with a peak and a trough seen around the light offset and 2 h before light onset, respectively. the affinity (k(d)) exhibited no variation. the rhythm in the b(max) persisted even under constant darkness with higher levels during the l ... | 2003 | 12865139 |
| recovery of c-starts, equilibrium and targeted feeding after whole spinal cord crush in the adult goldfish carassius auratus. | central nervous system neurons of many adult teleost fish are capable of regrowth across spinal cord lesions, which may result in behavioral recovery of swimming. since there have been few, if any, studies that examine the return of behaviors other than swimming, we provide a quantitative analysis of the recovery of c-starts that occur in adult goldfish after spinal cord injury. in addition, we include a qualitative analysis of the return of targeted feeding and equilibrium. whole spinal cord cr ... | 2003 | 12878670 |
| [studies on the experimental mode of infections of clonorchis sinensis: ii. experimental infection of clonorchis sinensis cercaria to fry of fresh water fishes] | cercariae of clonorchis sinensis were attempted to penetrate into various fry of fresh water fishes in order to examine the conditions of infection and the further development in the fish. the following conclusions were made. 1. cercariae of c. sinensis penetrated into the muscle of the fry of pseudorasbora parva were found to be able to develop. 2. cercariae penetrated into the fry of pseudorasbora parva migrated into the organs of the fry to kill their host. 3. from each dead individual of p. ... | 1964 | 12913594 |
| [studies on the experimental mode of infections of clonorchis sinensis: iii. studies on the wormicidal effect of external mucous substance of some fresh water fish on the larva of clonorchis sinensis] | the author reported in the previous pager on his observation of sudden death of clonorchis sinensis cercaria before penetration into the body of fry such as cyprinus carpio and carassius auratus. and in these studies, the reason behind the fact was investigated and it was found that the mucous substances on the surface of a certain fishes have a strong wormicidal effect to the larva of c. sinensis. 1. when cercariae of c. sinensis were immersed into the mucous substance of gold fish for three mi ... | 1964 | 12913595 |
| [the chromosome number and gonadal structure of f9-f11 allotetraploid crucian-carp]. | in this paper, the chromosome number of f9-f11 hybridis of red crucian (carassius auratus) x common carp(cryprinus carpio) was examined by means of kidney cell-pha culture. the results showed that f9-f11 allotetraploids possessed 200 chromosomes, with the karyotype formula 44 m + 68 sm + 44 st + 44 t, which were the same as the data indicated in f3-f8 allotetraploids. both female and male of f9-f11 allotetraploids had the normal ovaries and testes that were able to produce the normal dipoid ova ... | 2003 | 12924154 |
| 3,4-dichloroaniline-induced oxidative stress in liver of crucian carp (carassius auratus). | 3,4-dichloroaniline (dca) and its analogs are widely used as chemical intermediates in the synthesis of herbicides, azo dyes, and pharmaceuticals. they bring danger to growth, development, and propagation of aquatic organisms. the purpose of this study was to show dca-induced oxidative stress response in liver of crucian carp (carassius auratus). superoxide dismutase (sod), malondialdehyde (mda), glutathione (gsh), nitric oxide (no), and no synthase (nos) in liver were measured in crucian carp a ... | 2003 | 12927556 |
| a hydrodynamic topographic map in the midbrain of goldfish carassius auratus. | sensory systems often consist of several parallel pathways. within each pathway, sensory information may be processed in topographically arranged maps or in maps derived by neuronal computation. parallel pathways have so far not been described in the central lateral line system of teleost fish at levels higher than the medulla, and evidence for midbrain lateral line maps in fish is still weak. we found two classes of units with different response patterns in the central lateral line nucleus in t ... | 2003 | 12939378 |
| [cloning of hemoglobin alpha-chain cdna sequences from five fishes in cypriniformes]. | oxygen content in water is one of the limit factors to the fish growing. the tolerance of fish to low oxygen content depends on the affinity of hemoglobin to oxygen. the tempt of transgenic fish study is to transfer hemoglobin gene from the fish that tolerates to low oxygen content in water to the fish sensitive to low oxygen condition. therefore, using hemoglobin gene to breed new varieties may become a main trend in the near future. to explore the underline mechanisms for the variation of hemo ... | 2003 | 12939797 |
| molecular cloning and characterization of gilthead sea bream (sparus aurata) growth hormone receptor (ghr). assessment of alternative splicing. | the full-length growth hormone receptor (ghr) of gilthead sea bream (sparus aurata) was cloned and sequenced by rt-pcr and rapid amplification of 5'and 3'ends. the open reading frame codes for a mature 609 amino acid protein with a hydrophobic transmembrane region and all the characteristic motifs of ghrs. sequence analysis revealed a 96 and 76% of amino acid identity with black sea bream (acanthopagrus schlegeli) and turbot (scophthalmus maximus) ghrs, respectively, but this amino acid identity ... | 2003 | 12941635 |
| structural and biochemical characterization of a new type of lectin isolated from carp eggs. | a previously unidentified glycoprotein present in the eggs of the carp ( cyprinus carpio ) was isolated and structurally characterized. the protein binds to a sepharose 4b matrix and can be eluted with 0.4 m n -acetylglucosamine. the protein has an apparent molecular mass of 26686.3 da. on the basis of gel-filtration chromatography, the protein appears to be present in solution as a monomer. the sequence of its 238 amino acids, the position of its four disulphide bridges and the composition of i ... | 2003 | 12956625 |
| oral administration of formalin-inactivated cells of aeromonas hydrophila a3-51 controls infection by atypical a. salmonicida in goldfish, carassius auratus (l.). | there has been increasing interest in the use of probiotics in aquaculture to control fish diseases (e.g. douillet langdon 1994; gildberg, mikkelsen, sandaker & ringo 1997; kennedy, tucker, neidic, vermeer, cooper, jarrell & sennett 1998; deschrijver & ollevier 2000; robertson, o'dowd, burrells, williams & austin 2000), and a diverse range of gram-positive (such as carnobacterium inhibens) (robertson et al. 2000) and gram-negative bacteria, including vibrio alginolyticus (garriques & arevalo 199 ... | 2003 | 12962220 |
| normal and altered thyroidal function in domesticated goldfish, carassius auratus. | 1954 | 13177617 | |
| [oxygen requirement by carassius auratus gibelio (bloch) in early stages of development]. | 1954 | 13220495 | |
| the utilization of light as exteroceptive motivation in the comet goldfish (carassius auratus). | 1956 | 13295411 | |
| [inhibition of the motor initiative of the fish (carassius auratus) by 5-ht]. | 2016 | 13342211 | |
| [antagonism between lsd and 5-ht on the motor initiative of the fish (carassius auratus)]. | 2012 | 13342212 | |
| an inactive thyroid gland in carassius auratus. | 1956 | 13348640 | |
| some morphological aspects of protein absorption in isolated renal tubules of the goldfish (carassius auratus). | 1956 | 13354998 | |
| [lesions of the central nervous system in carassius auratus caused by serotonin and the protective action of lysergic acid diethylamide]. | 1956 | 13374116 | |
| [effect of temperature on the action of thyrotropic hormone in two lower vertebrates: rana esculenta l. and carassius auratus l]. | 1956 | 13374986 | |
| scale homotransplantation in goldfish (carassius auratus). | 1957 | 13411917 | |
| [sodium metabolism in the fish, carassius auratus l.; effect of a carbonic anhydrase inhibitor]. | 1956 | 13439577 | |
| the secretion of inert gas into the swim-bladder of fish. | the composition of the gas mixture secreted into the swim-bladders of several species of fish has been determined in the mass spectrometer. the secreted gas differed greatly from the gas mixture breathed by the fish in the relative proportions of the chemically inert gases, argon, neon, helium, and nitrogen. relative to nitrogen the proportion of the very soluble argon was increased and the proportions of the much less soluble neon and helium decreased. the composition of the secreted gas approa ... | 1958 | 13514011 |
| [kinetics of thyroid reaction to thyrotropic hormone in carassius auratus l.; reactions as function of temperature]. | 1958 | 13555375 | |
| electron microscopy of the piscine (carassius auratus) renal glomerulus. | 1958 | 13596267 | |
| some morphological aspects of the resorption of carbohydrates in the renal tubules of the goldfish (carassius auratus). | 1958 | 13627496 | |
| the fine structure of secretory neurons in the preoptic nucleus of the goldish (carassius auratus). | 1960 | 13732184 | |
| thermal reinforcement and thermoregulatory behavior in the goldfish, carassius auratus. | goldfish in a warm environment can cause a small drop in the temperature of their environment by pressing a lever. the fish regulate the temperature of their environment, keeping the temperature between 33.5 degrees and 36.5 degrees c most of the time. | 1961 | 13744274 |
| feeding behavior and electrical stimulation of the brain of carassius auratus. | bipolar electrodes were implanted in large goldfish in olfactory and nonolfactory areas of the central nervous system. stimulation of olfactory areas elicited stereotyped feeding activity indistinguishable from normally induced behavior. it is suggested that the olfactory rather than the peripheral gustatory system plays the predominant role in the arousal of feeding activity. | 1960 | 13829382 |
| [histological studies on carassius carassius auratus l. (pisces, teleostel) after severe infection with trichodina domerguei wallengreen, 1897 (protozoa, euciliata)]. | 1962 | 13894645 | |
| the effect of x-irradiation on goldfish. i. the effect of x-irradiation on survival and susceptibility of the goldfish, carassius auratus, to infection by aeromonas salmonicida and gyrodactylus spp. | 1962 | 13911544 | |
| effect of thyroxine on radioiodine metabolism by the thyroid gland of goldfish, carassius auratus l., in fresh and iodine-enriched water. | 1962 | 13916005 | |
| conditioned "anxiety" and punishment effects on operant behavior of goldfish (carassius auratus). | hungry goldfish learned to press a lever for worms on a 2-minute variable-interval schedule of reinforcement. lever pressing was suppressed in the presence of a flashing light by (i) pairing the light with a brief electric shock ("anxiety") and (ii) punishing the lever-pressing behavior with electric shocks. | 1963 | 13947089 |
| [comparative histoautoradiographic and histochemical study of the incorporation of h3-phenylalanine into the anterior hypophysis, in carassius auratus]. | 1962 | 14026895 | |
| [histoautoradiographic and biochemical study of the prehypophysis of carassius auratus, after the administration of s35-labelled sodium sulfate]. | 1962 | 14026896 | |
| [research on the histochemical methylation test applied to the study of the anterior pituitary in carassius auratus]. | 1963 | 14026897 | |
| further studies on the thyroidal control of radiophosphorus metabolism as determined by the effects of thyroxine and pituitary extract on thiourea and radioiodine treated goldfish, carassius auratus l. | 1963 | 14066294 | |
| histological changes in experimental exophthalmos of carassius auratus. | 1963 | 14082548 | |
| [fatty liver pathogenesis in carassius auratus in glucose-rich medium and its alteration by n1-n-butylbiguanide and n'-(4-methylbenzoylsulfonyl)-n'-butylurea (tolbutamide)]. | 1963 | 14121880 | |
| retinomotor responses of the goldfish (carassius auratus) to unilateral photic stimulation. | 1964 | 14146372 | |
| retinomotor responses in the enucleated eyes of the brown bullhead (ictalurus nebulosus) and the goldfish (carassius auratus). | 1964 | 14146373 | |
| temperature dependence of anesthesia in goldfish. | the anesthetizing concentrations in water of diethyl ether, chloroform, halothane (cf(3)cclbrh), and methaxyflurane (chcl(2)cf(2)och(3)) have been determined for temperature-acclimated goldfish (carassius auratus) at 5 degrees to 30 degrees c. at 20 degrees c, the concentrations that anesthetize 50 percent of the fish are 2160, 167, 76.4, and 57.0 mg/ liter, respectively; the corresponding partial pressures are 13.0, 3.36, 4.12, and 0.67 mm-hg. the anesthetizing partial pressures increase with b ... | 1964 | 14171540 |
| [radioautographic study of the adenohypophysis after h3-acetate administration in carassius auratus]. | 1964 | 14186930 | |
| an autoradiographic study of the hypophysis of carassius auratus by administration of na2-s35-o-4 after treatment with thiourea or thyroxine. | 1964 | 14187327 | |
| the mechanism of sodium and chloride uptake by the gills of a fresh-water fish, carassius auratus. i. evidence for an independent uptake of sodium and chloride ions. | carassius auratus placed in a dilute sodium chloride solution (400 microm) is able to absorb sodium and chloride ions at very different rates, or to absorb one ion and to lose the other. this is the case not only for fish which have been previously kept in choline chloride or sodium sulfate solutions or deionized water, in order to stimulate their absorption processes, but also in control fish which have not been deprived of sodium or chloride. the absorption of sodium or chloride appears to be ... | 1964 | 14192553 |