| [cell surface immunoglobulin of carp lymphocytes (cyprinus carpio l.)]. | molecular size and polypeptide chain composition of cell membrane immunoglobulin (mig) on lymphocytes of carp were studied using lactopreoxidase-catalysed surface radioiodination and sds-polyacrylamide gel electrophoresis. carp lymphocytes prepared from pronephros, blood and thymus carry migm in relatively high quantity. that means about 5-10% of the radiolabelled macromolecular cell surface material precipitates as igm. cell surface igm on carp lymphocytes is present as monomeric igm (m.w. 2200 ... | 1977 | 612094 |
| morphology of the carp hypophysis (cyprinus carpio l. | | 1977 | 610487 |
| the evolution of gonadotropins: some molecular data concerning a non-mammalian pituitary gonadotropin, the hormone from a teleost fish (cyprinus carpio l.). | the amino acid and sugar compositions as well as long n-terminal sequences and the c-terminal amino acids of the two subunits of carp gonadotropin, su i and su ii, were determined. an important homology was demonstrated between su i and alpha-subunits and between su ii and beta-subunits of mammalian gonadotropins. moreover su ii was more closely related to the beta-subunit of lh than to the beta-subunit of fsh. | 1977 | 607993 |
| ultrastructure of reorganising visual projections in half tecta of carp kept in constant light. | | 1977 | 593555 |
| the effect of carp egg-mrna on the transformation of goldfish tail. | poly a attached mrna was prepared from carp's mature ovarian eggs. when injected into fertilized eggs from different strains of goldfish, it mediated tail transformation from the double to single. the frequency varied according to the strain of goldfish. this discovery provides new information not only supporting but also expanding the previous report that crucian egg-mrna mediated tail transformation in goldfish. | 2003 | 560056 |
| [microstructure characteristics of the egg envelopes of the carp, cyprinus carpio l]. | the patterns of the microstructure of the egg envelopes in c. carpio and its changes during embryogenesis were studied by means of scanning electron microscope. the structure of envelopes was shown to suffer definite changes during the formation of perivitelline space, embryogenesis and prior to hatching. | 1977 | 559994 |
| [influence of a fish meal-free dry food on body composition of carp]. | | 1977 | 557432 |
| non-cooperative ca(ii) removal and terbium(iii) substitution in carp muscle calcium binding parvalbumin. | close coorelation of atomic absorption measurements for ca(ii) contents indicates that from ph 5.8-7.4 a twentyfold excess of egta1 removes but one of two ca(ii) from carp parvalbumin. thus binding of the two ca(ii) appears to be noncooperative. the maximum in emission intensity observed at a nonintegral 1.4-1.7 equivs of added tb(iii) is shown to be due to quenching by excess tb(iii). the emission intensity at the maximum increased 40% upon dialysis to remove tb(iii) not bound in the cd or ef s ... | 1977 | 411523 |
| [immunofluorescence study of the formation of evolutionary stable lens proteins in chick embryos]. | in the lens of fishes (carp, spiny dogfish) beta-crystallins were identified which were characteristic also of reptiles, amphibians, birds and mammals (evolutionary stable beta-crystallins). the dynamics of the formation of such beta-crystallins in 5--14 days old chick embryos was studied by the indirect immunofluorescence method with antisera to fish lens. these proteins are reliably indentified first at the lens sections from 7--8days old chick embryos. at all stages under study these beta-cry ... | 1977 | 406588 |
| gill sphaerosporosis in the common carp and grasscarp. | | 2006 | 112845 |
| [relationship between the characteristics of the acid stimulus and the impulse activity of medulla oblongata neurons in cyprinus carpio carp]. | in experiments on immobilized carps, by means of extracellular recordings, studies have been made of the neuronal activity of the facial lobe in the medulla evoked by stimulation of skin chemoreceptors of the mouth opening with hydrochloric and cytric acids. responses of the neurons to these stimuli exhibit both similarities and differences. composing across-neuron patterns, some aspects of coding of quality and intensity of chemical stimulus in fish were elucidated. particularly it was shown th ... | 2013 | 17250 |
| effects of carp gonadotropin on ovarian maintenance, maturation, and ovulation in hypophysectomized catfish, heteropneustes fossilis (bloch). | | 1976 | 1010306 |
| [receptor responses to amino acids recorded from the surface of the olfactory bulb]. | spontaneous activity and evoked responses were studied in different parts of the carp olfactory bulb. application of 10(-3) gaba to the bulb surface elicited some or no changes in the patterns of activity, according to the site of application. this finding suggests the receptor's axons to be the source of activity recorded on the surface of rostral or middle bulb portions. during stimulation with 10(-2)--10(-9) m amino acids, a rapid increase in the spike activity occurred. the concentration-res ... | 1976 | 1010066 |
| preliminary study of the occurrence and distribution of ddt residues in the jordan watershed, 1971. | data obtained from the jordan watershed in 1971 revealed the presence of ddt and its metabolites at various levels along the food chain. detectable levels of sigmaddt in water of the jordan river and two fish ponds ranged from 0.019 to 0.500 ppb, which is 1/10 to 1/500 the maximum level permitted in water by the u.s. government. mean residue in phytoplankton was 0.906 mug/g; in zooplankton the mean was 6.49 mug/g. sigmaddt residue in fish of the jordan watershed averaged 0.37 mg/kg in carp, 2.59 ... | 1976 | 1005067 |
| preparation and properties of carp muscle parvalbumin fragments a (residues 1 leads to 75) and b (residues 76 leads to 108). | the calcium-binding protein (parvalbumin), isolated from carp (cyprinus carpio) muscle, has been specifically fragmented into two polypeptides by tryptic hydrolysis at the single arginine residue at position 75. fragment a contains residues 1 leads to 75 and fragment b is composed of residues 76 leads to 108. the fragments have been characterized according to size, amino acid composition, carboxyl- and aminoterminal analysis. both fragments appear to be homogeneous by these criteria. the intact ... | 1976 | 999890 |
| resonance raman spectra of liganded and unliganded carp hemoglobin in both r and t states. | | 1976 | 993506 |
| the interaction between conditioned fish and naive schools of juvenile carp (cyprinus carpio, pisces). | in a circular experimental pool the behaviour of trained juvenile carp placed in naive schools of different size and of different behavioural motivation was studied. it could be shown that the time the trained fish needed to arrive at the feeding place was much shorter when it swam in a habituated school than in a frightened one. this is discussed as a result of the conflict between the conditioned reaction and the various levels of mutual attraction. in the same manner the time elapsing from cs ... | 1976 | 24923748 |
| genetic aspects of the transition from traditional to modern fish farming. | a theoretical model describing the genetic aspect of the transition from traditional to modern animal husbandry is presented. traditional races are characterized by high tolerance to harsh environments but a low rate of response to increased management inputs. modern, artificially-selected breeds are efficient convertors of management inputs to higher production but have a low resistance to harsh environments. thus, under lowinput traditional husbandry, the traditional races are best adapted, wh ... | 1976 | 24414842 |
| [action potentials of the heart atria and ventricles of rana temporaria frogs and cyprinus carpio carp]. | using microelectrode technique, studies have been made on electrophysiological indices (amplitude of ap, amplitude of the plateau, latent period of ap, duration of maximal depolarization, duration of repolarization at different levels) of cells of isolated atrium and ventricles of the carp during both the spontaneous activity and electrical stimulation. the obtained amplitude-temporal parameters were compared to those of the heart in the frog r. temporaria. it was found that the amplitude of ap, ... | 2006 | 1088024 |
| [summary glycogen in carp after glucagon or insulin injection (author's transl) (proceedings)]. | | 2016 | 1026186 |
| [visual projections in the forebrain of the carp cyprinus carpio]. | in the carp c. carpio, studies have been made on the evoked potentials (ep) in the-forebrain elicited by electrical stimulation of contralateral (with respect to the midbrain tectum) nerve. the most high-amplitude and short-latency ep were recorded in the rostro-lateral part of the forebrain at the depth of 1,000-1,500 mu. according to the topographical nomenclature of cyprinid telencephalon, this region corresponds to the area dorsalis telencephali pars lateralis, whereas according to classic c ... | 2010 | 1020557 |
| on the allosteric transition between the structures of high and low ligand affinity in carp hemoglobin. | the variation of magneto-optical rotatory dispersion with ph for carp deoxyhemoglobin in the presence and absence of inositol hexaphosphate was interpreted as a ph-induced allosteric transition between the structures of high and low ligand affinity (the r and t states in terms of the two state model of cooperativity). increasing the ph from 6 to 11 causes a decrease in the fraction of molecules in the t state from 1 to 0.65. in the absence of inositol hexaphosphate the ph dependence of this frac ... | 1976 | 10981 |
| [bothriocephaliasis in carp]. | | 1976 | 1028295 |
| [sanguinicoliasis in young carp]. | | 1976 | 1028293 |
| folding and stability of helical proteins: carp myogen. | | 1976 | 978728 |
| [intensity of carbon dioxide fixation in the tissues of carp depending on the environmental temperature]. | according to the level of carbon dioxide fixation at the incubation temperature at 20 degrees c the organs under study are arranged as follows: liver, kidneys, glandular system of gills, spleen, myocardium, gastrointestinal tract, skeletal muscles. 20 degrees c is the most optimal temperature for the processes of carboxylation in the fish. | 2013 | 1021919 |
| effect of rapid temperature change on mean body temperature and gill ventilation in carp. | carp were transferred from 25 degrees c water to a calorimeter at 15 degrees c or from 15 degrees c water to a calorimeter at 25 degrees c. during cooling, dorsal muscle temperature (tdm) and mean body temperature (tb) were continuously monitored. during the first minutes tb changed rapidly, while tdm changed only slightly. in a 0.468-dg fish, tdm decreased to two-thirds of the final value in 8.05 min, while tb attained this value in 3.6 min. tdm changed faster during heating than during cooling ... | 1976 | 970464 |
| further biochemical studies on carp gonadotropin (c-gth); biochemical and biological comparison of c-gth and a gonadotropin from acipenser stellatus pall. (chondrostei). | | 1976 | 955397 |
| [total electrical response to sound in the acoustico-lateral region of the carp, cyrpinus carpio, medulla oblongata]. | in order to investigate foci of the electrical activity, studies have been made on the topography and form of total reactions to sound in the acoustico-lateral part of the medulla oblongata in the carp c. carpio. two foci of the activity were found -- medical and ventral ones. responses in the medial and ventral foci differ with respect to the form, latency (2.0--2.5 and 1.3--1.5 msec. respectively) and amplitude (200--600 and 50--200 microvolts respectively). it is suggested that total reaction ... | 2006 | 983552 |
| [arguliasis of carp]. | | 1976 | 948857 |
| effect of colchicine and prednisolone upon the peptidergic neurosecretory product in cyprinus carpio l. | after a treatment with physiological doses of colchicine and prednisolone, the rapid transport of the neurosecretory granules in the preoptico-neurohypophyseal tract of cyprinus carpio l. is blocked. this fact is manifested by the accumulation of neurosecretory granules and of hering's bodies at the level of fibres of preoptico-neurohypophyseal tract, and on the contrary, by the significant reduction of neurosecretory product in the nerve fibres of the neurohypophysis. the neurotubules which par ... | 2013 | 134270 |
| [studies on the hard tissues of the pharyngeal teeth of carp]. | | 1976 | 1072931 |
| light chains of carp and pike skeletal muscle myosins. isolation and characterization of the most anodic light chain on alkaline ph electrophoresis. | | 1976 | 1278404 |
| biosynthesis of fatty acids by the carp, cyprinus carpio l., in relation to environmental temperature. | incorporation in vivo of sodium 1-14c-acetate into different lipid classes and fatty acids of total lipids and phospholipids of warm adapted and cold adapted carp livers was studied at 5 c and 22 c, respectively. the fatty acid composition of total lipids and phospholipids was also determined. the level of long chain polyunsaturated fatty acids in both total lipid and phospholipid fraction was higher in cold adapted fish than in warm adapted ones. the distribution of radioactivity among differen ... | 1976 | 1271977 |
| [the effect of pituitary injections on the isoenzyme composition of non-specific esterases in the tissues of the silver carp, hypophthalmichthys molitrix]. | polyacrylamide gel electrophoresis reveals differences in the isoenzymic spectra of non-specific esterases from various tissues of h. molitrix. hypophyseal injections result in changes of the isoenzymic spectra of all the tissues studied. the pattern of changes depends on the tissue examined. some of the isoenzymes are resistant to hypophyseal injections, whereas the other ones undergo changes which depend on the dose of the hormone. | 2006 | 941591 |
| heart rate and locomotor activity in fish: correlation and circadian and circannual differences in cyprinus carpio l. | | 1976 | 1269651 |
| the gonadotropic cells in the pituitary of the black molly, mollienisia latipinna, and other teleosts, identified by the immunofluorescence technique in normal and androgen-treated animals. | using anti-carp-gonadotropic-gamma-globulin, the indirect immunofluorescence technique was applied to sections of the pituitary of 12 teleost species. from the investigated species, the poeciliinae, and especially the black molly, showed a distinct localization of fluorescent cells in the mesoadenohypophysis. strong fluorescence was observed in the ventralmost region, containing the presumed gonadotropic cells; weak fluorescence was observed in the dorsal region, in the presumed thyrotropic cell ... | 1976 | 769990 |
| distribution of selected metals in tissue sample of carp, cyprinus carpio. | | 1976 | 1268353 |
| [ultrastructural organization and distribution of synapses of different size of the neurosecretory cells of the carp preoptic nucleus]. | with electron microscope two types of synaptic buttons (sb) are found on the nuerosecretory cells (nsc) in the nucleus preopticus of the mature carp. sb type i contain dense core vesicles and synaptic vesicles, whereas sb type ii have only the latter. sb type ii is considered to be functionally more active. the density of sb on the nsc body surface varied inversely proportionally to the nsc size, being in average 1.7+/-0.2 on the section of one small nsc in the ventral part of the nucleus preopt ... | 1976 | 951748 |
| [characteristics of summary electrical responses to sound in the acoustico-lateral region of the medulla oblongata of cyrpinus carpio carp]. | | 2006 | 941578 |
| [distribution of monoamines in the hypothalamus and hypophysis of carp, cyprinus carpio]. | monoaminergic fibres exhibiting green fluorescence have been revealed by the falck histochemical fluorescence technique in the area of the hypothalamic preoptic nuclei and nucleus lateralis tuberis of the carp. monoaminergic cerebrospinal fluid-contacting nerve cells with an intensive greenish and yellowish fluorescence were observed in the walls of the lateral and posterior recesses of the third ventricle. monoaminergic fibres are few in the pro-and meta-adenohypophysis. yellowish-green fluores ... | 2006 | 941576 |
| control of energy metabolism in fish white muscle. | concentrations of key metabolites were determined in carp white muscle before exercise and after maximal activity. it was found that the concentration of atp decreases by about 65%, adp decreases slightly, and amp remains unchanged. consequently, the level of the free adenylate pool decreases. simultaneously there is an increase in the concentration of imp and nh4+. the increase in imp level and the decrease in adenylate pool are essentially in 1:1 stoichiometry, a result showing that the adenyl ... | 1976 | 131493 |
| polymorphism of transferrin in carp (cyprinus carpio l.): genetic determination, isolation, and partial characterization. | seven transferrin variants (a,b,c,d,e,f, and g) have been found in carp sera (cyprinus carpio l.). genetic analysis involves five variants and agrees with the hypothesis of simple codominant autosomal inheritance at one transferrin (tf) locus in spite of the fact that the carp is a tetraploid in relation to other species of the same family. carp populations from three regions were studied which differed in gene frequencies. individual populations were in hardy-weinberg equilibrium. the polymorph ... | 1976 | 1259703 |
| [evoked potentials in the optic tectum of the carp brain upon electric stimulation of the facial nerve]. | the evoked potentials in the carp tectum opticum in response to stimulation of the afferent pathway for chemical nonolfactory reception, the facial nerve, are positive deflections of 5-25 ms latency which do not reverse during microelectrode submersion. according to the evoked potential amplitude and latent period 7 active zones were distingnished in the ipsilateral tectum differing from each other either in one or in both parameters. the dependence of the response evoked by facial nerve stimula ... | 1976 | 1264291 |
| re-examination of horizontal cells in the carp retina with procion yellow electrode. | | 1976 | 1258385 |
| stimulation of carp interrenal function by adrenocorticotrophin. | the effect of acth on cortisol concentration in the plasma of the carp has been studied; cortisol was determined using a competitive protein-binding radioassay. blood was sampled at 12.00 h (the diurnal minimum) by cardiac puncture. the plasma cortisol level of undisturbed carp (blood obtained 1--3 min after netting) was 16 +/- 14 (s.e.m.) ng/ml. one hour after injection of acth (1-0 i.u./100 g body wt., i.m.) the level of cortisol increased to 415 +/- 62 ng/ml and reached a maximum of 656 +/- 6 ... | 1976 | 1255049 |
| two-way selection for growth rate in the common carp (cyprinus carpio l.) | the domesticated european carp was subjected to a two-way selection for growth rate. five generations of mall selection for faster growth rate did not yield any response, but subsequent selection between groups (families) resulted in considerable progress while maintaining a large genetic variance. selection for slow growth rate yielded relatively strong response for the first three generations. random-bred control lines suffered from strong inbreeding depression and when two lines were crossed, ... | 1976 | 1248737 |
| histological study of coccidiosis caused in the silver carp and the bighead by eimeria sinensis chen, 1956. | | 1976 | 1032457 |
| comparison of frequency characteristics of photopic and scotopic s-potentials in the carp. | frequency characteristics of photopic and scotopic l-type s-potentials were studied in the carp retina, using either an impulse or a sinusoidal light input superimposed on a steady background light of various intensities. the photopic type responses were faster than the scotopic responses if their frequency characteristics were compared without background illumination. however, the difference was not absolute. both types of responses became faster in the presence of background illumination. the ... | 1976 | 1030747 |
| [possibility of tissue accumulation and elimination of 3,4-benzpyrene from the bodies of fish]. | one-year and two-year iridescent trout and two-year carp during different periods (from 2 months to 1 year) were given protein-vitamin addition to food containing 3,4-benz-pyrene (bp). the total amount of bp entering the organism of fish for the whole period of the experiment reached 12,6 mg/kg of fish weight in daily dosage ranging from 0.1 to 4.1 m/kg. in fish tissues bp was either not detected at all, or the content of the carcinogen in them did not exceed its amount in the control. in summer ... | 1976 | 1014502 |
| the peculiar structure of the dorsal aorta of carp (cyprinus carpio l.). | the authors describe the moniliform structure of dorsal aorta of the cyprinus carpio l., which has successive swellings and constrictions, strictly corresponding to each vertebra. they discuss the possible physiological significance of the unusual structure of the dorsal aorta. | 1976 | 1010293 |
| [demonstration of intercellular junctions between pigment epithelium and cones in the light-adapted retina of the carp (cyprinus carpio)]. | | 1976 | 1007032 |
| a seasonal study on the hemoglobins of carp (cyprinus carpio) and yellowfish (barbus holubi) in south africa. | | 1976 | 1000943 |
| [accumulation and distribution of cesium-137 in the organs of carp]. | | 1976 | 997249 |
| comparative morphology, anatomy and histology of the alimentary canal of an indian freshwater major carp, labeo calbasu (hamilton) during the different life-history stages in relation to food and feeding habits. | 1. the early life-history stages of labeo calcasu (hamilton) viz., the fries, are zooplankton-feeders (carnivorous). the morphology, anatomy and histology of the alimentary canal during this stage is adapted accordingly. 2. with increase in age, size and body-length, the food and feeding habits of the fish undergo changes from the carnivorous to the herbivorous type (adult) through the omnivorous type (fingerlung). 3. the morphology, anatomy and histology of the alimentary canal gets modified ac ... | 1976 | 984436 |
| [electrotonic interaction of secondary neurons of the carp olfactory bulb]. | responses of the olfactory bulb secondary neurons provoked by olfactory tract electrical stimulation were studied in carp, using the intracellular recording technique. spike responses in most neurons were identified as antidromic. values of their latent periods ranged from 2.5 to 55 msec. in addition, two kinds of responses with a constant latent period were revealed: pseudoantidromic spikes and low-amplitude fast depolarizing potentials. it is supposed that both kinds of responses are generated ... | 1976 | 980170 |
| retinal projections in cyprinid fishes: a degeneration and radioautographic study. | the retinal projections of three species of cyprinid fish (cyprinus macrolepidotus, cyprinus carpio, rutilus rutilus) were examined with nauta and fink-heimer methods following enucleation and with radioautography following intraocular injection of [3h]-l-proline. optic tract axons cross completely in the optic chiasma and are distributed to the hypothalamus (nucleus opticus hypothalamicus pars magnocellularis), the thalamo-pretectal region (11 distinct primary optic centers), and the tectum opt ... | 1976 | 974722 |
| [the ionic permeability of cytoplasmic membranes during early carp (cyprinus carpio l.) embryogenesis]. | membrane potentials (mp) of the early embiogenesis in cyprinus carpio l. were studied. it is determined that during cleavage of the egg cell mp increases from 8.3 +/- +/- 2.1 mv (non-cleaving fertilized egg cell) to 47.5 +/- 4.1 mv (stage of the microcellular morula). the influence of sodium ions on mp gradually decreases. on the contrary, the influence of potassium ions grown considerably. potassium ions play the main part in formation of embrionic cells mp in the carp. | 2013 | 945920 |
| [comparative study of biological effect of purified gonadotropins of sturgeon (acepenser stellatus) and carp (cyprinus carpio)]. | a comparison was made of the biological effect of purified gonadotropins of the sevryuga and the carp on the activation of adenyl cyclase in the homogenate of the goldfish ovary, the reaction of spermiation in two species of frogs, and the in vitro maturation of oocytes of two amphibian species and sevryuga. the ratio of specific activities of the preparations under study was shown to vary markedly with respect to test-subject and test-reaction. the data obtained suggest, thus, qualitative diffe ... | 1976 | 934594 |
| studies on glycogenolysis in carp liver: evidence for an amylase pathway for glycogen breakdown. | | 1976 | 10130 |
| the survival of carp (cyprinus carpio) outside water. | the possible use of the swimbladder of carp as auxiliary respiratory organ when the animals are exposed to air has been studied. after exposure to air, blood ph and po2 and mean swimbladder o2 concentration decrease and blood pco2 increases in normal animals. exposure to air after ligation of the pneumatic ducts results in increases in blood ph and pco2 and decreases in blood po2 and swimbladder carbon dioxide concentration. possible reasons for these observations are discussed. | 1976 | 8845 |
| synaptic transmission from photoreceptors to bipolar and horizontal cells in the carp retina. | the most important observations in the present study can be summarized as follows: 1. in horizontal and bipolar cells, blocking chemical transmission caused membrane potential changes of the same polarity as the responses to illumination in each cell type. 2. acceleration of transmitter release from the receptor terminals depolarized the horizontal cells, which is the opposite polarity to the light response. 3. stimulation by transretinal current flowing from receptor side to vitreous side depol ... | 1976 | 7385 |
| water flow dynamics in the respiratory tract of the carp (cyprinus carpio l.). | simultaneous measurements of water velocity in the buccal chamber, and buccal and opercular hydrostatic pressure of carp have revealed surprisingly high water velocities. the high flow velocities mean that, at times, the kinetic energy of flow makes a substantial contribution to the total fluid energy. this suggests that there may be unequal distribution of hydrostatic pressures within the buccal chamber. anatomical examinations showed that fluid channels in the buccal chamber and gill raker sie ... | 1975 | 1214116 |
| dynamic characteristics of the receptive field of l-cells in the carp retina. | | 1975 | 1210026 |
| [an original aspect of the rod visual cell in the carp (cyprinus carpio)]. | | 1975 | 816481 |
| [effects of different toxic compounds (pb, cu, formol, nh4) on the carp: histologic changes in excretory and hematopoietic organs]. | here is a comparative study of the impairments observed on the histological structure of the excretory and hematopoietic organs of carps after acute intoxication (by formol and ammonia) and chronic intoxication (by copper sulfate and lead nitrate). although all these toxic substances induce the same type of impairments, their degree of seriousness vary. the most affected organs are the gills which present with congestive reactions and partial destruction of respiratory lamellae, and the spleen w ... | 2013 | 1204674 |
| the histones of rainbow trout erythrocytes include an erythrocyte-specific histone. | the erythrocyte histones of rainbow trout were compared with those of goose by polyacrylamide gel electrophoresis. a band analogous to goose erythrocyte-specific histone v, but not identical in relative mobility or quantity, was found to be a component of trout erythrocyte histone. a similar component was also found in carp erythrocyte histone, but it was absent from trout liver histone. to reveal this band clearly, it was advantageous to displace the histone iii monomer by oxidation. to verify ... | 1975 | 1192258 |
| effects of external ions on the synaptic transmission from photorecptors to horizontal cells in the carp retina. | 1. intracellular recordings were made from cones and horizontal cells of the isolated carp retina and the mechanisms of synaptic transmission from cones of horizontal cells were studied by changing the ionic composition of the external medium. 2. cones were depolarized and their light responses enhanced in low ca high-mg medium. in the same medium, in which chemical transmission is suposed to be blocked, horizontal cells were hyperpolarized and their light responses disappeared. 3. when the syna ... | 1975 | 173833 |
| a dynamic model of the receptive field of l-cells in the carp retina. | | 1975 | 1182232 |
| structural states and transitions of carp hemoglobin. | the wide ligand affinity range previously observed for carp hemoglobin is bounded at both extremes by regions of constant affinity. within these regions, ph, organic phosphates, and the extent of ligand binding have no effect on the measured affinity and the cooperativity of ligand binding is greatly reduced or absent. the rates of co recombination to fully and partially unliganded carp hemoglobin, under various organic phosphate and ph conditions, are shown to reflect this behavior. constant ki ... | 1975 | 240820 |
| structure and innervation of extraocular muscles of carassius. | the extraocular muscles of the carp carassius contain two types of muscle fibre. large white fibres have ribbon-shaped peripheral myofibrils and triads located at the z line. small red fibres, rich in mitochondria, have polygonal-shaped myofibrils and triads at the a-i junction. silver- and cholinesterase-stained preparations show that the large fibres are innervated by axons which spiral around them and exhibit intense cholinesterase activity over long distances. axons supplying small muscle fi ... | 1975 | 1184453 |
| investigation of some physico-chemical properties of muscular parvalbumins by means of the luminescence of their phenylalanyl residues. | the influence of ph, temperature and ca2+-release on the phenylalanyl and tyrosyl fluorescene of muscular parvalbumins from white muscles of hake and carp has been investigated. within the ph range from 7 to 8, ca2+-saturated parvalbumins show a conformational change registered by fluorescence, that is associated with the release of some of the bound ca2+. removal of ca2+ by means of egta (ethyleneglycolbis-(aminoethylether)tetra-acetic acid) considerably narrows the region of protein nativity, ... | 1975 | 238652 |
| [influence of some pesticides on the ontogenesis of carp]. | | 1975 | 1216612 |
| [the constancy of form recognition with different inversions of visual stimuli in fish (cyprinus carpio)]. | | 2003 | 1210739 |
| [the response of the hypophysis to exogenous gn-rh during the annual reproductive cycle of the carp cyprinus carpio l]. | the response of the hypophysis to injection of homologous hypothalamic extract and of lh-rh was studied during the reproductive cycle of the carp cyprinus carpio l. it is maximal during the summer months, during the reproductive period. it is nil or weak during winter, the period of sexual inactivity. it appears in april-may when gametogenesis is initiated and the water temperature increase. | 1975 | 808285 |
| [effects of transections and electrical coagulations in the medulla oblongata upon the activities in the respiratory muscles of the crucian carp (author's transl)]. | the following conclusions may be drawn from the results in this work. the respiratory cycles are formed by the neuronal machinery in the reticular formation under the posterior part of the vagal motor nucleus. the motor neurones or the neuronal networks composing the motor nucleus of the respiratory muscles tonically discharge the action potentials, when the neurones or the networks are released from the inhibitory influences of the interneurones connecting the neuronal machinery to the motor ne ... | 1975 | 1238557 |
| the unanswered question of high anaerobic capabilities of carp white muscle. | | 1975 | 1139461 |
| genetic differences between the chinese and european races of the common carp. ii. multi-character variation-a response to the diverse methods of fish cultivation in europe and china. | the european and chinese races of the common carp and their f1 crossbreds were tested in five experimental environments. the two races differ widely and conspicuously in many characters. the chinese carp has poorer growth rate but higher viability and fertility, earlier sexual maturity, higher resistance to crowding, better adaptation to unfavourable pond conditions, higher seine escapability, longer body and larger weight differences between females and males. the crossbreds between the two rac ... | 1975 | 1056321 |
| genetic differences between the chinese and european races of the common carp.i. analysis of genotype-environment interactions for growth rate. | growth rate of 12 groups of common carp was measured at five experimental environments. three of the 12 tested groups were strains of the domesticated european race of the common carp, one group was a representative of the big-belly chinese race, and the remaining eight groups were f1 crossbreds among the european strains and between the european and the chinese races. the average growth rate over the five environments of the chinese big-belly was considerably poorer than that of the european ca ... | 1975 | 1056320 |
| the effects of some herbicides and pesticides on sodium uptake by isolated perfused gills from the carp cyprinus carpio. | | 1975 | 239812 |
| vesicles carrying nuclear material in mature cyprinus carpio erythrocytes. | | 1975 | 166858 |
| [turnover rates of proteins in liver, muscle and plasma in the carp (cyprinus carpio) submitted to a total and prolonged fast]. | | 1975 | 236871 |
| [isoenzymes of phosphorylase from skeletal muscles of cyclostomata and raw-boned fish]. | separation and partial purification of isoenzymes of phosphorylase b from skeletal muscles of lamprey (lampetra) and carp (cyprinus carpio) was carried out. isoenzyme i was adsorbed on deae cellulose and eluted by kcl; isoenzyme ii was not adsorbed on deae cellulose. a number of kinetic characteristics of phosphorylase of the coldblooded were determined, e. g. km values for glucose-1-phosphate, glycogen and amp; ki for glucose-6-phosphate; stability towards denaturation (heating and effect of ur ... | 2013 | 1112 |
| [ultrastructure and functions of the cells of proximal and distal segments of the nephron of anadromous and freshwater fishes]. | in the carp kidney, the proximal tubule cells have no infoldings of the basilar plasmatic membrane. in the salmonidae nephrons the numerous parallel membranes of proximal tubule cell are formed by foldings of the basilar plasmatic membrane with numerous mitochondria in between. in o. nerka and s. malma experiments with mgcl2 injection showed that their kidneys secrete magnesium in contrast to the carp kidney. the numerous invaginations of proximal tubule cells membrane are suggested to be a morp ... | 1975 | 1145756 |
| [partial characterization of a hypothalamic gonadotropic hormone releasing factor in carp (cyprinus carpio l.) studied in vitro]. | | 1975 | 1132656 |
| [ induction of pituitary gonadotropin discharge in the carp (cyprinus carpio l.) with the aid of cisclomiphene citrate]. | | 1975 | 1132655 |
| the central projections of the trigeminal, facial and anterior lateral line nerves in the carp (cyprinus carpio l.). | the central projections of the trigeminal, facial and anterior lateral line nerves were studied in the carp (cyprinus carpio) by the nauta and fink-heimer silver techniques following rhizotomy. degenerating trigeminal fibers were found projecting on the nucleus of the descending trigeminal root and on the medial funicular nucleus. the former can be subdivided in five portions lying dorsal to the various cranial motor nuclei. the afferent facial fibers could be traced into the facial, glossophary ... | 1975 | 1112930 |
| prevention of freeze denaturation of carp actomyosin by sodium glutamate. | 1) denaturation of carp actomyosin during storage at -20 degrees was studied with particular interest in the cryoprotective effect of sodium glutamate, the most cryoprotective of the compounds tested previously. 2) storage with glutamate prevented the rapid decrease in solubility, viscosity, and atpase (ec 3.6.1.3)activity of actomyosin during storage. ultracentrifugal studies suggested that aggregation occurred in the frozen state without glutamate, but that added glutamate prevented aggregatio ... | 1975 | 125275 |
| crystalline adenylate kinase from carp muscle. | 1. the concentration of adenylate kinase in carp muscle is about 0.3 mg/g. an improved isolation procedure makes use of a dilute solution of the substrates, atp and amp, to elute the enzyme from a phosphocellulose column in overall yields of 60% before crystallization. by the hexokinase--ph-stat assay the specific activity is 3550 units/mg. the preparation has been found to be essentially homogeneous by dodecylsulfate gel electrophoresis, isoelectrofocusing and gel filtration. 2. the molecular w ... | 1975 | 164348 |
| [electromyographical studies on the swimming movement of carp. ii. pectoral fin movement (author's transl)]. | | 1975 | 1237055 |
| [the ultrastructure of carp granulocytes]. | | 1975 | 1131027 |
| slow piii component of the carp electroretinogram. | the slow piii component of the electroretinogram (erg) was studied in the isolated, aspartate-treated carp retina. although the latter is richly populated with cones, slow piii appeared to reflect almost exclusively the activity of rods; e.g. the spectral sensitivity of the potential paralleled closely the rod pigment curve, its operating range (i.e. the v-log i curve) was limited to 3 log units above absolute threshold, and raising background intensities to photopic levels produced saturation o ... | 1975 | 1117278 |
| proprioceptive motor control in fish respiration. | the response of single respiratory neurones in the medulla oblongata of carp to short twitches of individual respiratory muscles were analysed. the muscle contractions were obtained through automatic electrical stimulation and could be consistently elicited in a predetermined phase relation to the ventilatory cycle. the results show that, apart from nerve cells which take part in long-term processing of proprioceptive information from several sources, neurones also exist which possess the proper ... | 1975 | 168305 |
| [control of respiration in teleostean fishes: existence of chemoreceptors, physiologically analogous to those of higher vertebrates]. | injection of nacn or lobeline into the ventral aorta of the trout or carp provokes hyperventilation and bradycardia within 5 seconds, responses which are the weaker the higher the oxygen tension of the ambient water. the reactions, precisely similar to the chemoreflexes of higher vertebrates, suggest that these fish also possess arterial chemoreceptors. | 1975 | 806384 |
| [control of the respiration in teleostean fish: respiratory reactions to abrupt changes in the oxygenation of the medium]. | in the trench, carp and trout, an abrupt change in the partial pressure of ambient oxygen leads to a change in arterial oxygen tension which, within 1.5-2.6 seconds, elicits cardiac and ventilatory reactions. by their short latency, these responses may be explained as a modification of chemoreceptor activity, and resemble respiratory chremoreflexes of higher vertebrates. | 1975 | 808333 |
| terbium replacement of calcium in carp muscle calcium-binding parvalbumin: an x-ray crystallographic study. | | 1975 | 1237627 |
| quantification of phase improvement in the tangent formula application to carp muscle calcium-binding protein. | | 1975 | 1237626 |
| refinement of the structure of carp muscle calcium-binding parvalbumin by model building and difference fourier analysis. | | 1975 | 1237625 |
| ultrastructural aspects of mature cyprinus carpio erythrocytes. | | 1975 | 1242080 |
| variability of intermuscular bones, vertebrae, ribs, dorsal fin rays and skeletal disorders in the common carp. | the number of intermuscular bones, vertebrae, ribs, dorsal fin rays and an index of bone disorders were determined from x-ray photographs of over 1000 common carp. these carp represented a broad genetic range, including five distinct lines of the domesticated european carp, one group of the chinese race big-belly and 12 crossbreds. the genetic, and even the phenotypic, variation in intermuscular bones were much smaller than those found in earlier experiments. variation of other bone characters w ... | 1975 | 24419604 |