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clinostomum complanatum (trematoda: clinostomatidae) in five new fish hosts in japan.metacercariae of clinostomum complanatum were found in six species of natural freshwater fishes collected at koyama pond in tottori city of tottori prefecture, japan. five of these fish species are reported here as new records for second intermediate hosts of c. complanatum in japan: the silver crucian carp (carassius gibelio langsdorfi), the deepbodied crucian carp (carassius cuvieri), the carp (cyprinus carpio), the topmouth gudgeon (pseudorasbora parva) and the rose bitterling (rhodeus ocelat ...19921512883
transferability of immune plasma and pronephric cells in isogeneic, allogeneic and xenogeneic transfer systems in crucian carp.transfer of immunity to horse erythrocytes (hrbc) by intravascular injection of immune plasma and pronephric cells was performed using histocompatible and histoincompatible crucian carp to examine "mhc" regulation in adoptive immunity. clonal ginbuna crucian carp, carassius gibelio langsdorfii and outbred kinbuna crucian carp, c. carassius buergeri immunized with hrbc were used as donors of plasma and cells for transfer to unimmunized members. recipients were then evaluated by measuring the anti ...19872960574
five confirmed human cases of gnathostomiasis nipponica recently found in northern japan.five confirmed human cases of gnathostomiasis nipponica exhibiting creeping eruption and itching were found sporadically from the autumn of 1991 to the winter of 1992 in the northern region of the mainland of japan. in all cases, a causative gnathostome with 3 transverse rows of hooklets on the head bulb was detected in biopsied skin. the morphological characteristics agreed with the advanced third-stage larvae of gnathostoma nipponicum. within a few weeks before development of symptoms, all pat ...19921491291
the accumulation and distribution of metals in water, sediment, aquatic macrophytes and fishes of the gruža reservoir, serbia.the concentrations of iron, lead, cadmium, copper, manganese, mercury and arsenic were measured in water, sediment, five macrophytes (typha angustifolia, iris pseudacorus, polygonum amphybium, myriophyllum spicatum and lemna gibba) and five fish species (sander lucioperca, abramis brama, carassius gibelio, silurus glanis and arystichtys nobilis) in the gruža reservoir, used for water supply and recreational fishing. the concentrations of all examined elements were higher in sediment than in wate ...201323412697
haematopoietic necrosis of cultured prussian carp, carassius gibelio (bloch), associated with cyprinid herpesvirus 2. 201323617723
immune response and protection in gibel carp, carassius gibelio, after vaccination with β-propiolactone inactivated cyprinid herpesvirus 2.herpesviral haematopoietic necrosis (hvhn) of gibel carp (carassius gibelio) is a newly emerged infectious disease caused by cyprinid herpesvirus 2 (cyhv-2) and has caused huge economic losses in aquaculture operations. currently, no effective methods are available for the control of the disease. in this study, β-propiolactone inactivated cyprinid herpesvirus 2 (cyhv-2) vaccine was prepared, and the immune response and protection in cultured gibel carp after vaccination was thoroughly investigat ...201626772479
hematological and histological changes in prussian carp carassius gibelio infected with cyprinid herpesvirus 2.outbreaks of cyprinid herpesvirus 2 (cyhv-2) disease, also known as herpesviral hematopoietic necrosis, among cultured prussian carp carassius gibelio has occurred each year in jiangsu province, china, since 2009. in autumn 2014, hematological, blood biochemical, and histological changes in naturally infected moribund prussian carp were investigated after cyhv-2 was confirmed as the sole etiologic agent by etiological analyses. total erythrocyte count, total leukocyte count, hemoglobin concentra ...201627484729
characterization of virulence properties of aeromonas veronii isolated from diseased gibel carp (carassius gibelio).aeromonas veronii is a kind of opportunistic pathogen to fish and humans, significantly impending aquaculture production. recently, we isolated two a. veronii strains, named gyc1 and gyc2, from diseased gibel carp (carassius gibelio) in china. based on gyrb (dna gyrase b subunit) genes of gyc1 and gyc2, the constructed phylogenetic tree showed that the two strains were clustered with a. veronii. sixteen virulence genes related to the pathogenicity of aeromonas spp. were subjected to pcr assay. t ...201627043558
massive mortality of prussian carp carassius gibelio in the upper elbe basin associated with herpesviral hematopoietic necrosis (cyhv-2).from 22 may to 10 june 2011 massive mortality of prussian carp carassius gibelio was observed in alluvial lake řehacˇka close to the elbe river in the czech republic. more than 1400 kg of dead fish were collected and no other fish species were affected. further molecular and cytogenetic investigation of fish (n = 232) revealed that the rˇehacˇka population of prussian carp consisted exclusively of gynogenetic triploid females. the causative agent was identified by means of molecular and electron ...201223269383
biological traits of rare males in the population of carassius gibelio (actinopterygii: cyprinidae) from lake pamvotis (north-west greece).the gynogenetic population of prussian carp carassius gibelio in lake pamvotis (north-west greece) included a small percentage of males (2-3%). cytogenetic analysis revealed heterogeneity of the population at the ploidy level: all females were triploid (modal chromosome number 156-162 chromosomes) while the males were either triploid (modal number 156-158 chromosomes) or tetraploid (modal number 200-214 chromosomes). morphometric analysis revealed significant differences in body shape among thes ...201020701641
[investigations on ligula intestinalis plerocercoid l., 1758 infection of some fishes from dam lake kunduzlar (kirka, eskişehir).].in this study, the presence of ligula intestinalis plerocercoid in some fish species (cyprinus carpio, carassius gibelio, barbus plebejus, capoeta tinca, chondrostoma nasus, leuciscus cephalus, alburnus escherichii) from the kunduzlar dam, turkey was investigated between august 2008 and may 2009. by the end of the study, ligula intestinalis plerocercoid haqs been identified in the body cavity of 3 host fishes [chondrostoma nasus (1.1%, 5.0+/-0), leuciscus cephalus (12.1%, 1.5+/-0,6), and alburnu ...201020597057
temporal analysis of electroretinographic responses in fishes with rod-dominated and mixed rod-cone retina.photoreceptor content of fish retinas could be accessed by comparative electroretinographic (erg) studies using flickering light stimuli that could separate rod-mediated vision where critical flicker frequency (cff, frequency when the eye loses its ability to resolve individual light pulses) is usually less than 15 hz from cone-mediated vision. four fish species inhabiting different photic environments (small-spotted dogfish shark--scyliorhinus canicula, eel--anguilla anguilla, painted comber--s ...200920037193
microcystin production by microcystis aeruginosa exposed to phytoplanktivorous and omnivorous fish at different kairomone concentrations.we investigated microcystin (mc) production by three microcystis aeruginosa strains in response to different kairomone concentrations (indirect exposure: 0%, 10%, 25%, and 50%) of hypophthalmichthys molitrix and carassius gibelio langsdorfi. the mc production was significantly different among control and three kairomone treatment levels. mc production was higher with increasing concentration of kairomones and the peak intracellular and extracellular mc contents showed clear dose-dependent respon ...200919669611
accumulation of microcystins in water and fish tissues: an estimation of risks associated with microcystins in most of the greek lakes.toxin-producing cyanobacteria in lakes and reservoirs form a threat to humans as well as various forms of aquatic life. this study is an investigation into the occurrence and distribution of microcystins (mcyst) in 13 greek lakes. the distribution of mcyst in water and surface scum and toxin bioaccumulations in the omnivorous fish species carassius gibelio were surveyed in all lakes. considerable amounts of mcyst were found in water and scum of all lakes, irrespective of the trophic state, the t ...201019526539
receptive field sizes of direction-selective units in the fish tectum.responses of direction-selective (ds) ganglion cells (gcs) were recorded extracellularly from their axon terminals in the superficial layer of tectum opticum (to) of immobilized cyprinid fish carassius gibelio (bloch, 1782). excitatory receptive field (erf) sizes of six types of ds gcs (on and off cells, each of three distinct preferred directions) were evaluated on the basis of four different methods. in method 1, the erf width was calculated as a product of duration of spike train, generated i ...200919412981
distribution of non-indigenous fish species, prussian carp carassius gibelio (bloch, 1782) in the turkish freshwater systems.the non-indigenous fish species, prussian carp carassius gibelio (bloch, 1782), was first reported in the thrace region of turkey. the species is now established in at least 46 freshwater systems (lake, river, reservoir, lagoon and pond) of turkey and the species' spread has been especially rapid between 1998 and 2006. especially, this species show the rapid invasion of carassius gibelio in turkish freshwater systems from thrace to anatolia.200719086578
genetic differentiation among greek lake populations of carassius gibelio and cyprinus carpio carpio.the genetic structure of the western greece lake populations of carassius gibelio and cyprinus carpio carpio populations was characterized by using a pcr-based rflp and sequencing analysis of mitochondrial rdna genes and regions (16s rdna, cytochrome b and d-loop). our analysis was able to detect: (a) two haplotypes in c. c. carpio populations and two haplotypes in c. gibelio populations (b) a high nucleotide divergence between the two species and (c) two genetically distinct c. gibelio populati ...200919005765
complete depletion of primordial germ cells in an all-female fish leads to sex-biased gene expression alteration and sterile all-male occurrence.gynogenesis is one of unisexual reproduction modes in vertebrates, and produces all-female individuals with identical genetic background. in sexual reproduction vertebrates, the roles of primordial germ cells on sexual dimorphism and gonadal differentiation have been largely studied, and two distinct functional models have been proposed. however, the role of primordial germ cells remains unknown in unisexual animals, and it is also unclear whether the functional models in sexual reproduction ani ...201526582363
assessment of microcystins in lake water and the omnivorous fish (carassius gibelio, bloch) in lake pamvotis (greece) containing dense cyanobacterial bloom.toxin-producing cyanobacteria in lakes and reservoirs form a threat to humans as well as various forms of aquatic life. this study examined the occurrence and distribution of microcystins (mcyst) in the shallow eutrophic lake pamvotis (greece). mcyst concentrations in the tissues (liver, kidneys, intestine, gonads, brain and muscle) of the fish species carassius gibelio were also examined. tests were performed with an enzyme-linked immunosorbent assay (elisa). mcyst concentration in water and in ...200817503206
a comparative study on microbiota from the intestine of prussian carp (carassius gibelio) and their aquatic environmental compartments, using different molecular methods.the aim of this study was to evaluate, via various molecular methods, the possible correlations between microbial community structure of prussian carp and the environmental compartments of their habitat.201526189342
preliminary results concerning the influence of human kisspeptin on lh secretion in prussian carp (carassius gibelio) females at the stage of ovarian recrudescence and spawning season.the aim of the experiments was to evaluate the influence of human kisspeptin on lh secretion of prussian carp (carassius gibelio) females during ovarian recrudescence and spawning season. for the experiments, human kisspeptin kiss1 (0.1 mg kg(-1) of body weight--b.w.), gnrh analogue (des gly(10), d-ala(6)) gnrh-a (20 µg kg(-1) b.w.) and dopamine antagonist (pimozide) (5 mg kg(-1) b.w.) were used alone or in combinations. at 3, 6, 12, 24 hours after injection(s) blood samples were collected from ...201526103682
accumulation of some metals in muscles of five fish species from lower nitra river.this paper reports the results of accumulated selected metals concentrations (fe, mn, zn, cu, ni, co, cr, pb, cd, hg and mehg) in the muscle of five common slovak fish species (chub-leuciscus cephalus, common carp-cyprinus carpio, prussian carp-carassius gibelio, roach-rutilus rutilus, and wels catfish-silurus glanis). furthermore, correlations among the selected metals and order of metal accumulation in the fish muscle were determined. the concentrations of metals (mg/kg wet weight basis) range ...200617000549
henneguya doneci (myxosporea: bivalvulida) in the gill filaments of prussian carp carassius gibelio (bloch) from the upper yellow river running through inner mongolia, china.we examined 11 prussian carp, carassius gibelio (bloch), from the upper yellow river running through inner mongolia (wuhai city) to record myxosporean species. between 6 and 15 elongated cysts of henneguya doneci were located at the basal part of the gill filaments of 3 carp (27.3%); no more myxosporean plasmodia were found in other organs. although the morphology and morphometric values of the spores (average measurements of 14 spores in µm: 11.4 long by 9.2 wide with 7.5 in thickness; 2 polar ...201525843612
diversity of the parasite fauna of cyprinid (cyprinidae) and percid (percidae) fishes in the vistula lagoon, poland.a total of 2398 fish specimens (1091 percidae and 1307 cyprinidae) belonging to 16 species (3 percidae and 13 cyprinidae), caught in the polish part of the vistula lagoon were examined within december 1994-march 1997. the parasites found were identified as belonging to 63 taxa (61 species as well as diplostomum spp. flukes and glochidia unionidae gen. sp. which could not be identified to species) of the microsporea (1), protozoa (1), myxozoa (2), monogenea (10), digenea (15), cestoda (11), nemat ...200316889022
color properties of the motion detectors projecting to the goldfish tectum: i. a color matching study.responses of direction-selective and orientation-selective motion detectors were recorded extracellularly from the axon terminals of ganglion cells in the superficial layers of the tectum opticum of immobilized goldfish, carassius gibelio (bloch, 1782). color stripes or edges moving on some color background (presented on the crt monitor with known emission spectra of its phosphors) served as stimuli. it was shown that stimuli of any color can be more or less matched with the background by varyin ...201425164354
the presence of microcystins and other cyanobacterial bioactive peptides in aquatic fauna collected from greek freshwaters.toxic bloom-forming cyanobacteria can cause animal death and adversely affect human health. blooms may contain microcystins (mcs), cyanobacterial heptapeptide hepatotoxins and other peptides such as anabaenopeptins and anabaenopeptilides. mcs have been shown to occur in various aquatic organisms including mussels, water snails, crustaceans and fish. muscle and viscera samples from eight species of fish (acipenser gueldenstaedtii, carassius auratus, carassius gibelio, cyprinus carpio, perca fluvi ...200616540185
updated morphology, histopathology and molecular phylogeny of myxobolus hearti, cardiac myxosporea in gibel carp, carassius gibelio (bloch).the original description of myxobolus hearti is supplemented with new data on spore morphology, histopathology and molecular phylogeny. myxobolus hearti are found in the heart ventricle of the gibel carp, carassius gibelio (bloch), where they form whitish oval or irregularly shaped plasmodia. mature spores are oval or shortly ellipsoidal in frontal view, lemon-shaped in sutural view and eye-shaped in apical view. the spores are 14.12 ± 0.35 (13.6-15) μm long (mean ± sd), 11.85 ± 0.34 ± 0.36 (11- ...201424341506
changes in microcystin production by microcystis aeruginosa exposed to phytoplanktivorous and omnivorous fish.with direct exposure to phytoplanktivorous fish (hypophthalmichthys molitrix), increased mass-specific microcystin production occurred in three monoclonal microcystis aeruginosa strains (nies 44, 88 and 99). total mass-specific microcystin content of nies 44 exposed to h. molitrix was over 50 times higher than controls (a mean value of 16.2 microgg(-1)-dry cell in controls versus 878.6 microgg(-1)-dry cell in treatments). up to nine times higher microcystin levels were detected in nies 88 expose ...200415110469
mhc genes and parasitism in carassius gibelio, a diploid-triploid fish species with dual reproduction strategies.the gibel carp is a fish species with dual reproduction modes, gynogenesis and sexual reproduction, coexisting in mixed diploid-polyploid populations. following the red queen (rq) assumption, asexual organisms are, due to their low genetic diversity, targets for parasite adaptation. because mhc polymorphism is maintained by selection from parasites and sexual selection, mhc genes are considered as a suitable candidate for testing the rq hypothesis. in this study, we investigated mhc variability ...201323768177
copper and zinc in four freshwater fish species from lake pamvotis (greece).lake ecosystems are vulnerable to heavy-metal pollution. fish samples are considered as one of the most indicative factors, in freshwater systems, for the estimation of trace metals pollution potential. lake pamvotis (nw greece) is a typical mediterranean ecosystem of great importance in regard to biodiversity and to aesthetic value. the fish species found most commonly in the lake are cyprinus carpio, silurus aristotelis, rutilus ylikiensis, and carassius gibelio. the aim of the present study i ...200414987866
chromosome studies of european cyprinid fishes: cross-species painting reveals natural allotetraploid origin of a carassius female with 206 chromosomes.a single female with 206 chromosomes and another 26 females with 156 chromosomes identified as prussian carp, carassius gibelio, and 5 individuals with 100 chromosomes identified as crucian carp, c. carassius, were sampled during field survey in one locality in the upper elbe river. to identify the origin of females with high chromosome numbers, comparative karyotype analysis, gish, with whole c. carassius dna as probe and phylogenetic positions of sampled individuals revealed by cytochrome b mi ...201323652770
myxobolus lentisuturalis sp. n. (myxozoa: myxobolidae), a new muscle-infecting species from the prussian carp, carassius gibelio from china.a new highly pathogenic muscle-infecting species of the genus myxobolus bütschli, 1882 is described from the prussian carp, carassius gibelio (bloch, 1782) using spore morphology and ssu rdna sequence data. phylogenetic analyses elucidated relationship of the newly described myxobolus lentisuturalis to other myxobolus species and supported its position of an independent species.200212641197
lead accumulation and elimination in tissues of prussian carp, carassius gibelio (bloch, 1782), after long-term dietary exposure, and depuration periods.we studied the bioaccumulation of lead in selected tissues of prussian carp carassius gibelio (bloch, 1782) during 12 and 24 months exposure to different doses of this metal in feed and the elimination of lead from tissues during the following 12-month depuration period. lead concentration was determined using atomic absorption spectrometry method. the highest lead concentrations were observed at 2.0 ± 0.54 to 7.4 ± 1.1 mg kg(-1) in the kidney, 3.0 ± 0.13 to 5.2 ± 0.17 mg kg(-1) in the bone, and ...201323054776
the effect of ploidy and temporal changes in the biochemical profile of gibel carp (carassius gibelio): a cyprinid fish species with dual reproductive strategies.the basic biochemical profile of gibel carp (carassius gibelio), diploid-triploid cyprinid species complex with dual reproduction modes, was investigated. the aim of the study was to test for the effect of fish group (which combines the effects of ploidy and sex) and temporal changes on indicators of the biochemical profile of blood in gibel carp. we showed that the basic biochemical profile of blood is significantly influenced by season and fish group. triploid gynogenetic females had a better ...201322773226
immunocytochemical identification and localization of apud cells in the gut of seven stomachless teleost fishes.aim:to study the cell types, localization, distribution density and morphology of apud cells in the intestinal mucosa of stomachless teleost fishes.method:by using the peroxidase antiperoxidase complex (pap) immunocytochemical staining technique the identification, localization and morphology of immunoreactive (ir) endocrine cells seattered in the intestinal mucosa of grass carp (cyenopharyngodon idellus), black carp ( mylopharyngodon piceus ) and common carp (cyprinus carpio) were investigated ...200011819532
population dynamics with a mixed type of sexual and asexual reproduction in a fluctuating environment.carassius gibelio, a cyprinid fish from eurasia, has the ability to reproduce both sexually and asexually. this fish is also known as an invasive species which colonized almost all continental europe, most likely originating from asia and eastern europe. populations of both sexually and asexually reproducing individuals exist in sympatry. in this study we try to elucidate the advantages of such a mixed type of reproduction. we investigate the dynamics of two sympatric populations with sexual and ...201222489797
[a report of ectoparasite piscicola geometra (linnaeus, 1761) (hirudinea: rhynchobdellida) on roach (rutilus rutilus (linnaeus, 1758)) from uluabat lake].an ectoparasite leech piscicola geometra were found on female roach (rutilus rutilus) between the anus and lateral line during the biometric measurements for the purpose of monitoring the fish population in uluabat lake. p. geometra was previously reported on carassius gibelio and tinca tinca from lake uluabat. it was understood with this case report that r. rutilus also is a host fish for p. geometra in uluabat lake.201122198920
protective immunity in gibel carp, carassius gibelio of the truncated proteins of cyprinid herpesvirus 2 expressed in pichia pastoris.cyprinid herpesvirus 2 (cyhv-2) infection is a newly emerged infectious disease of farmed gibel carp (carassius gibelio) in china and causes huge economic losses to the aquaculture industry. in this study, the three membrane proteins encoded by genes orf25, orf25c, and orf25d of cyhv-2 were truncated and expressed in yeast, pichia pastoris. screening of the recombinant yeasts was done by detecting the truncated proteins using western blot. through immunogold labeling, it was shown that proteins ...201526564473
molecular characterization and expression of an oocyte-specific histone stem-loop binding protein in carassius gibelio.stem-loop-binding proteins (slbps) have been revealed to interact with stem-loop of histones, and oocyte-specific and oocyte-preferential slbp2 have been identified in vertebrates including xenopus (s. tropicalis) and b. taurus to play a key role in histone translation regulation, but no oocyte-specific slbps have been characterized in fish. here, we have identified and characterized the first fish oocyte-specific slbp2 in carassius gibelio. its full-length cdna contains 975 bp orf encoding 324 ...201526341792
mass mortality of pond-reared carassius gibelio caused by myxobolus ampullicapsulatus in china.from june to august 2009, allogynogenetic silver crucian carp carassius gibelio (bloch) pond-cultured at the nanquan experimental station, china, were found to be heavily infected with myxosporeans, which caused mortalities ranging from 33% (13/40) to 90% (36/40) in the cages. the pharynxes of infected fish were swollen, nodular, and severely damaged. based on morphological characters and 18s small subunit ribosomal dna sequence similarity, the myxosporean was identified as myxobolus ampullicaps ...201121516979
the epidermal structure of carassius gibelio: a link with ploidy status in spawning and postspawning periods.a reduction of epidermal club cells and an increase of goblet cells were found in carassius gibelio during spawning when compared to postspawning. a significantly lower proportion of club cells at spawning was found in diploid males and triploid females than in diploid females. it could be linked to male efforts to avoid a fright reaction and the potential adoption of this strategy by gynogenetic females, or alternatively to a higher parasite infection or immunosuppression during spawning.201021133922
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.1978754418
[participation of ca2+ -atpase in calcium homeostasis of cerebellar neurons in crucian carp].in our experiments the participation ofendoplasmic reticulum ca2+ -atpase (serca) was studied as a separate intracellular participant of calcium homeostasis in neurons of cerebellum from hypoxia-tolerant fish species--crucian carassius gibelio. the serca's blockers cyclopiazonic acid and tapsigargin were used. intracellular ca2+ concentration ([ca2+]i) was measured by ca2+ -sensitive dye fura-2am and microfluorescent method for measuring free ca2+ concentration. we established that cerebellar ne ...200919827627
morphological and mtdna sequence studies on three crucian carps (carassius: cyprinidae) including a new stock from the ob river system, kazakhstan.three morphologically and genetically distinct forms of the genus carassius were collected from the ob river system, kazakhstan, central asia; carassius carassius, carassius gibelio gibelio and an unknown stock tentatively referred to as carassius gibelio sub-species m. the last mentioned had 33-41 gill rakers, being intermediate between the other two forms (23-27 in c. carassius and 44-49 in c. g. gibelio), and five scales in the upper transverse series, less than in the others. it also had a r ...200920735669
dna extraction protocols may influence biodiversity detected in the intestinal microbiome: a case study from wild prussian carp, carassius gibelio.in this investigation, we examined the influence of different dna extraction protocols on results obtained for intestinal microbiota of prussian carp. we showed that significant differences were observed in numbers of reads, otus, shannon index and taxonomic composition between two different dna extraction protocols for intestine of prussian carp (carassius gibelio), and differences were also evident between microbial communities in the intestinal mucosa and intestinal content. statistical analy ...201727915284
histopathological changes caused by the metacestodes of neogryporhynchus cheilancristrotus (wedl, 1855) in the gut of the gibel carp, carassius gibelio.metacestodes of neogryporhynchus cheilancristrotus (wedl, 1855) were found in the gut of some gibel carp (carassius gibelio) specimens from a hungarian water reservoir. location of metacestodes in the freshly opened gut was marked with disseminated, red-coloured, pinhead-sized nodules in the anterior part of the intestine. in histological sections, metacestodes were found in a hole inside the propria layer of the intestinal folds. the worms were in direct contact with the host tissue without bei ...200515782658
molecular characterization and expression pattern of a germ cell marker gene dnd in gibel carp (carassius gibelio).as a germ cell marker gene, dead end (dnd) has been identified and characterized in many vertebrates. recently, we created a complete germ cell-depleted gonad model by the dnd-specific morpholino-mediated knockdown approach, and revealed sex-biased gene expression alteration through utilizing unisexual gynogenetic superiority in polyploid gibel carp. however, dnd and its expression pattern are still unclear in the gibel carp. in this study, we further analyzed molecular characterization of gibel ...201627418526
methodological issues affecting the study of fish parasites. i. duration of live fish storage prior to dissection.we tested the ability of parasite species to respond quickly to artificial conditions (e.g. by changing abundance or even decreasing to extinction) while host fish species were being held alive prior to dissection. prussian carp carassius gibelio were sampled by electrofishing from 2 ponds alongside the river dyje (czech republic) during 'cold' and 'warm' seasons. all fish were transported to the laboratory in aerated pond water and kept in a 1 m3 outdoor basin with aged tap water for 6 d. twent ...201627137069
extra microchromosomes play male determination role in polyploid gibel carp.sex is generally determined by sex chromosomes in vertebrates, and sex chromosomes exhibit the most rapidly-evolving traits. sex chromosome evolution has been revealed previously in numerous cases, but the association between sex chromosome origin and the reproduction mode transition from unisexual to sexual reproduction remains unclear. here, we have isolated a male-specific sequence via analysis of amplified fragment length polymorphism from polyploid gibel carp (carassius gibelio), a species ...201627017622
pharmacokinetics and tissue residues of moroxydine hydrochloride in gibel carp, carassius gibelio after oral administration.the pharmacokinetics and tissue residues of moroxydine hydrochloride were studied in gibel carp at water temperature of 15 and 25 °c. samples (blood, skin, muscle, liver, and kidney) were collected over 10 days after the treatment and analyzed by high-performance liquid chromatography with an ultraviolet detector. the results indicated that the influence of water temperature on the metabolism of the drug was significant. the plasma concentration-time data of moroxydine hydrochloride conformed to ...201626763124
impact of treated wastewater on organismic biosensors at various levels of biological organization.relating the treated wastewater quality and its impact on organismic biosensors (prussian carp, carassius gibelio and earthworm, eisenia fetida) was the main objective of the study. the impact on health status of fish living downstream, microbiological contamination and antimicrobial resistance, fish tissue structure, blood biochemistry, oxidative stress, genotoxic effects, as well as multixenobiotic resistance mechanism (mxr) was assessed. treated wastewater discharged from the wwtp modified th ...201526298246
meiosis completion and various sperm responses lead to unisexual and sexual reproduction modes in one clone of polyploid carassius gibelio.unisexual polyploid vertebrates are commonly known to reproduce by gynogenesis, parthenogenesis, or hybridogenesis. one clone of polyploid carassius gibelio has been revealed to possess multiple modes of unisexual gynogenesis and sexual reproduction, but the cytological and developmental mechanisms have remained unknown. in this study, normal meiosis completion was firstly confirmed by spindle co-localization of β-tubulin and spindlin. moreover, three types of various nuclear events and developm ...201526042995
opposing motion inhibits responses of direction-selective ganglion cells in the fish retina.inhibitory influences in receptive fields (rfs) of the fish retinal direction-selective ganglion cells (ds gcs) were investigated. responses of the fast retinal ds gcs were recorded extracellularly from their axon terminals in the superficial layer of tectum opticum of immobilized fish. the data were collected from two cyprinid species - carassius gibelio, a wild form of the goldfish, and the barbel fish labeobarbus intermedius. visual stimuli were presented to the fish on the monitor screen wit ...201525608593
spectral sensitivity of the electroretinogram b-wave in dark-adapted prussian carp (carassius gibelio bloch, 1782).one of the purposes of this study was to examine whether b-wave measurements can be used in the evaluation of scotopic spectral sensitivity in prussian carp measurements when the eyes were surgically deprived of cornea, lens, and most of the vitreous. another goal was testing the new fitting procedure for a2-based photopigments. using fitted amplitude-log intensity functions for threshold calculation, and two models for computer-assisted fitting of spectral sensitivity curves, no significant dif ...201425151269
effect of long-term dietary lead exposure on some maturation and reproductive parameters of a female prussian carp (carassius gibelio b.).lead is reported to be an endocrine disruptor. in the current study, we exposed female prussian carp to artificial feed, supplemented with five doses of dietary pb (0, 1 (control), 8, 13, 24, and 49 mg/kg) over either a 24-month period or a 12-month period, followed by further 12 months where the fish were fed the control diet. periodically, oocyte maturation, gonadosomatic index (gsi), ability to secret luteinizing hormone (lh) as well as gonad pb concentrations were measured. it was found that ...201424078275
interaction of silicon-based quantum dots with gibel carp liver: oxidative and structural modifications.quantum dots (qds) interaction with living organisms is of central interest due to their various biological and medical applications. one of the most important mechanisms proposed for various silicon nanoparticle-mediated toxicity is oxidative stress. we investigated the basic processes of cellular damage by oxidative stress and tissue injury following qd accumulation in the gibel carp liver after intraperitoneal injection of a single dose of 2 mg/kg body weight si/sio2 qds after 1, 3, and 7 day ...201323718202
does interspecies hybridization affect the host specificity of parasites in cyprinid fish?host specificity varies among parasite species. some parasites are strictly host-specific, others show a specificity for congeneric or non-congeneric phylogenetically related host species, whilst some others are non-specific (generalists). two cyprinids, cyprinus carpio and carassius gibelio, plus their respective hybrids were investigated for metazoan parasites. the aim of this study was to analyze whether interspecies hybridization affects host specificity. the different degrees of host specif ...201323587287
accumulation of 20 elements in great cormorant (phalacrocorax carbo) and its main prey, common carp (cyprinus carpio) and prussian carp (carassius gibelio).in this study, 20 heavy metals and trace elements (al, as, b, ba, cd, co, cr, cu, fe, hg, li, mg, mn, mo, ni, pb, si, se, sr and zn) were analyzed in different tissues (muscle, liver, intestine, feather and bone) of the great cormorant (phalacrocorax carbo) and in different tissues (muscle, liver, gills, kidney and gonad) of their main prey (common carp-cyprinus carpio and prussian carp-carassius gibelio) during the nesting season. cormorant and fish specimens were collected at the ečka fishing ...201222494478
repeatability, reproducibility, separative power and subjectivity of different fish morphometric analysis methods.we compared the repeatability, reproducibility (intra- and inter-measurer similarity), separative power and subjectivity (measurer effect on results) of four morphometric methods frequently used in ichthyological research, the "traditional" caliper-based (tra) and truss-network (tru) distance methods and two geometric methods that compare landmark coordinates on the body (gmb) and scales (gms). in each case, measurements were performed three times by three measurers on the same specimen of three ...201627327896
effects of acute cooling on fish electroretinogram: a comparative study.temperature dependence of electroretinogram (erg) was investigated in 3 fish species occupying different habitats--dogfish shark (scyliorhinus canicula), prussian carp (carassius gibelio) and european eel (anguilla anguilla). acute cooling of the shark isolated eyecup from 23°c down to 6°c induced suppression of the electroretinographic b-wave--a complete degradation of this component was observed at 6°c. on the other hand, photoreceptor component of the erg, the negative late receptor potential ...201525759261
cardinal difference between the orientation-selective retinal ganglion cells projecting to the fish tectum and the orientation-selective complex cells of the mammalian striate cortex.responses from two types of orientation-selective units of retinal origin were recorded extracellularly from their axon terminals in the medial sublaminae of tectal retinorecipient layer of immobilized cyprinid fish carassius gibelio. excitatory and inhibitory interactions in the receptive field were analyzed with two narrow stripes of optimal orientation flashing synchronously, one in the center and the other in different parts of the periphery. the general pattern of results was that the influ ...201222744823
native prussian carp (carassius gibelio) health status, biochemical and histological responses to treated wastewaters.the aim of this study was to assess the impact of treated wastewaters on native wild prussian carp inhabiting effluent-receiving waters (erc) receiving municipal and sugar plant treated wastewaters, further downstream waters (dw), and a detached canal unaffected by the wwtp activities. to that end, general fish health status was determined, including plasma biochemical, haematological, oxidative stress and tissue histopathological indices, over three seasons. the greatest tissue alterations were ...201627524256
bioaccumulation of heavy metals in freshwater fish species, anzali, iran.the main objectives of study were to monitor the metals concentrations, in freshwater fish species, carassius gibelio and esox lucius; and to identify any relationships between species and bioaccumulation of metals. the highest concentration of metals (cadmium, 1.96; copper, 24.2; zinc, 49.6; lead, 5.4; chromium, 4.4) between the fish species and tissues was in the liver of esox lucius, while the lowest (cadmium,0.21; copper,7.2; zinc,19.4; lead,0.9; chromium,0.6 μg/g) found in the muscle of car ...201121858708
on the organization of receptive fields of orientation-selective units recorded in the fish tectum.responses from two types of orientation-selective units of retinal origin (detectors of horizontal lines and detectors of vertical lines) were recorded extracellularly from their axon terminals in the medial sublamina of tectal retinorecipient layer of immobilized cyprinid fish carassius gibelio. excitatory and inhibitory influences across receptive fields of orientation-selective units were evaluated. positions, sizes and forms of the responsive parts of the receptive field were estimated by mo ...200919938209
complete mitochondrial genome of a natural triploid crucian carp mutant, carassius auratus var. pingxiangnensis, and phylogenetic analysis of different ploidies in crucian carp.carassius auratus var. pingxiangnensis is a natural triploid crucian carp mutant. in order to understand its placement and genetic background at the gene level, the characteristics of mitochondrial dna sequences and phylogenetic relationship were examined. the results showed that the mitochondrial dna is a circular double-stranded dna molecule that is 16,576 bp in length with 13 protein-coding genes, 22 transfer rna genes, 2 ribosomal rna genes, and a non-coding control region. mitochondrial gen ...201425117343
dna barcoding common non-native freshwater fish species in turkey: low genetic diversity but high population structuring.negative impacts of introduced non-native freshwater species on native species have been increasingly recognized in the world as well as in turkey. however, there has been relatively little attention on genetic characterization of alien freshwater fishes in their non-native distribution range and virtually no study has been conducted in turkey despite its crucial importance in invasion biology. the purpose of this study was to elucidate genetic diversity of common non-native freshwater fish spec ...201323298166
'who's who' in renal sphaerosporids (bivalvulida: myxozoa) from common carp, prussian carp and goldfish--molecular identification of cryptic species, blood stages and new members of sphaerospora sensu stricto.myxozoans are a group of diverse, spore-forming metazoan microparasites bound to aquatic environments. sphaerospora dykovae (previously s. renicola) causes renal sphaerosporosis and acute swim bladder inflammation (sbi) in juvenile cyprinus carpio carpio, in central europe. a morphologically similar species with comparably low pathogenicity, s. angulata has been described from c. c. carpio, carassius auratus auratus and carassius gibelio. to clarify uncertainties and ambiguities in taxon identif ...201322917178
effects of zinc on morphology of erythrocytes and spleen in carassius gibelio.the influence of increased zinc concentrations (0.1, 0.5, 1.0, 1.5 and 2.0 mg(-1) znso4 x 7h2o) on the total number and the morphology of the erythrocytes, as well as the processes related to their formation and destruction in the spleen of carassius gibelio were investigated ex situ. it was found that zinc concentrations caused pathological alterations in the erythrocytes that were not identical in the different concentrations-poikilocytosis; ruptures in cell membranes in the concentrations of ...200819297988
calibration of fisk, an invasiveness screening tool for nonnative freshwater fishes.adapted from the weed risk assessment (wra) of pheloung, williams, and halloy, the fish invasiveness scoring kit (fisk) was proposed as a screening tool for freshwater fishes. this article describes improvements to fisk, in particular the incorporation of confidence (certainty/uncertainty) ranking of the assessors' responses, and reports on the calibration of the score system, specifically: determination of most appropriate score thresholds for classifying nonnative species into low-, medium-, a ...200919087233
induction of micronuclei and binuclei in blood, gill and liver cells of fishes subchronically exposed to cadmium chloride and copper sulphate.common carp (cyprinus carpio), prussian carp (carassius gibelio) and peppered cory (corydoras paleatus) were evaluated as target species to perform genotoxicity tests for heavy metals. fishes were exposed to different doses of cadmium (0.005-0.1 mg/l) and copper (0.01-0.25 mg/l) for 21 days. hexavalent chromium at a single dose of 5 mg/l was used as a positive control. frequencies of micronuclei and binuclei were evaluated comparatively in peripheral blood erythrocytes, gill epithelial cells and ...200515721204
anatomical and functional differences in the adductor mandibulae muscle between zaco platypus and carassius gibelio langsdorfi of the cyprinidae family.a histological study has been made on the jaw-closing muscle, adductor mandibulae, of 2 species of cyprinidae, zaco platypus and carassius gibelio langsdorfi, which show completely different feeding behaviour. the former swims up to the food with its mouth open in rapid current, and the latter sucks food from the bottom into its mouth by enlargement of the buccal and opercular cavities in quite mild current. the latter's feeding behaviour was made repeatedly. the a. mandibulae was divided into i ...19863740444
histochemical and electron-microscopical findings in the pineal organ of carassius gibelio (langsd.). 1979549101
the outer segments of photoreceptive pinealocytes in the pineal organ of the funa, carassius gibelio langsdorfi. a scanning electron microscopic study.the form and size of the outer segments of photoreceptive pinealocytes in the pineal organ of the funa, carassius gibelio langsdorfi, were observed with the scanning electron microscope. the height of the outer segments measures between 1 and 3 micrometer and the diameter varies widely from 1.5 to 8 micrometer. various forms of outer segments, i.e. a slender type, a dome-like type, a cap-like type and a helical type, were demonstrated. the parallel-oriented filamentous processes of the inner seg ...1978627019
circulation of cerebrospinal fluid in carassius gibelio. 194620276918
genotoxicity and oxidative stress biomarkers in carassius gibelio as endpoints for toxicity testing of ukrainian polluted river waters.this study aimed to assess oxidative stress and genotoxicity biomarkers in prussian carp carassius gibelio laboratory-exposed to water from polluted ukrainian rivers in order to evaluate their usefulness as endpoints in a short-term bioassay for toxicity testing of freshwaters. the micronucleus (mn) test and the frequency of cells with double nuclei (dn) in erythrocytes and gill cells were used as indicators of chromosome aberrations and abnormalities in cell divisions, respectively. cellular an ...201121880368
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