| survey of the paratenic hosts of anguillicola crassus in lake velence, hungary. | anguillicola crassus infection of paratenic hosts was investigated in lake velence, hungary, in october 1992. a total of 155 specimens of 8 species (gymnocephalus cernuus, lepomis gibbosus, stizostedion lucioperca, abramis brama, alburnus alburnus, cyprinus carpio, pseudorasbora parva and rutilus rutilus) were examined: all species proved to be infected. there were large differences in the prevalence of infection among fishes, but the prevalence was generally higher in perciform fishes and it wa ... | 1994 | 7810405 |
| a focus of opisthorchiidosis in germany. | epidemiological investigations were carried out in a focus of opisthorchiidosis in brandenburg state of germany. 9 out of 23 cats harboured adult flukes in their livers. beside opisthorchis felineus, metorchis bilis was found in 4 cats. muscle samples of 227 cyprinid fish belonging to 6 species (rutilus rutilus, scardinius erythrophthalmus, alburnus alburnus, abramis brama, a. ballerus, blicca bjoerkna) were examined for trematode metacercariae. 12 different types of cysts were found. o. felineu ... | 1996 | 9060173 |
| experimental studies on the infectivity of anguillicola crassus third-stage larvae (nematoda) from paratenic hosts. | the swimbladder parasite anguillicola crassus kuwahara, niimi et itagaki, 1974 (nematoda: dracunculoidea) is a well-known pathogenic parasite of the japanese and european eels. numerous studies on the life cycle of the parasite have revealed the involvement of a copepod or an ostracod intermediate host and a fish paratenic host, in which the third-stage larvae (l3) infective to the eel develop. the present study comprised infection experiments with the larvae of a. crassus. these experiments can ... | 1996 | 9061901 |
| the cement apparatus of larval and adult pomphorhynchus laevis (acanthocephala: palaeacanthocephala). | light and electron microscopy were used to study the ultrastructure of the cement apparatus, namely cement glands and cement ducts of mature specimens of the acanthocephalan parasite pomphorhynchus laevis müller, 1776, recovered from the digestive tracts of fish leuciscus cephalus risso, 1826. in addition, the cement glands of immature p. laevis found within the body cavity of the fish alburnus alburnus alborella de filippi, 1844 were examined. in a mature male of p. laevis the 6 cement glands a ... | 1998 | 9614327 |
| occurrence of monogenea in italian freshwater fish (po river basin). | sixteen monogenean species were found on the skin and gills of 10 different fish species collected from north italian water bodies. cleidodiscus pricei from ictalurus melas; dactylogyrus alatus from alburnus alburnus; d. anchoratus, d. formosus and d. vastator from carassius carassius; d. difformis from scardinius erythrophthalmus; d. rutili from rutilus aula; d. tincae and gyrodactylus gasterostei from tinca tinca; d. ergensi from leuciscus cephalus and telestes muticellus; d. vistulae and para ... | 2002 | 12701382 |
| boating and navigation activities influence the recruitment of fish in a baltic sea archipelago area. | we studied the effects of boating and navigation activities on the recruitment of coastal fish in the stockholm archipelago in the nw baltic proper. the impacts were quantified by sampling metamorphosed young-of-the-year (y-o-y) fish in inlets adjacent to i) routes for medium-sized passenger ferries; ii) berths (small marinas) with small boats; and iii) references. species with high preference for vegetation were negatively influenced by boating and navigation activities and species with low pre ... | 2005 | 15865309 |
| mercury levels and liver pathology in feral fish living in the vicinity of a mercury cell chlor-alkali factory. | twenty-three barbels (barbus graellsii), 30 bleaks (alburnus alburnus) and 4 sediment samples were collected from four areas of the cinca river (ne spain), upstream and downstream of a mercury cell chlor-alkali plant. mercury concentration in sediments downstream of the plant was about 25 times higher than the concentration upstream. mercury levels in the muscle and liver of barbels downstream of the chlor-alkali plant were 10 and 30 times higher than those upstream. the average mercury concentr ... | 2007 | 16949130 |
| dynamic modeling of food-chain accumulation of brominated flame retardants in fish from the ebro river basin, spain. | since the 1980s, brominated flame retardants (bfrs) have been detected in air, sewage sludge, sediment, fish, shellfish, birds, and mammals, including humans. however, model studies regarding bfr food-chain accumulation are scarce. in the present study, the accumulation of hexabromocyclododecane and brominated diphenyl ethers (bdes) 47, 153, 154, and 183 in benthivorous barbel (barbus graellsii) and pelagic bleak (alburnus alburnus) from four locations in the ebro river basin in spain was modele ... | 2006 | 17022393 |
| [an investigation of helminth fauna of the bleak (alburnus alburnus l.) from the mustafakemalpasa stream, bursa, turkey]. | the purpose of the present study was to determine the helminth fauna of the bleak (alburnus alburnus l.). according to the results obtained, a total of 6 species of helminth parasites were encountered on the bleak. these parasites include dactylogyrus alatus, d. fraternus and diplozoon homoion (monogenea) on the gills; bothriocephalus acheilognathi (cestoda) and rhapdochona denudata (nematoda) in the intestine; and diplostomum sp. (digenea) in the eyes, on the surface of body and on the fins. | 2006 | 17106861 |
| pcb levels and accumulation patterns in waterbird eggs and in their prey at lake kerkini, a north-eastern mediterranean wetland of international importance. | seven "target" pcb levels were determined and compared in waterbird eggs, in their prey, and in water at lake kerkini, northern greece, to investigate pcb bioaccumulation patterns and to define the best bioindicator of target pcbs for this area. pcbs were analysed from eggs of phalacrocorax carbo, podiceps cristatus, ardea cinerea, egretta garzetta, and nycticorax nycticorax and from prey types alburnus alburnus, rutilus rutilus, lepomis gibbosus. carassius auratus, and rana sp. pcbs analysed we ... | 2007 | 17549546 |
| paraergasilus longidigitus yin, 1954 (copepoda: poecilostomatoida) infestations in the bleak, alburnus alburnus lin.,1758 from enne dam lake. | in the present study, paraergasilus longidigitus yin, 1954 (copepoda: poecilostomatoida) was identified in branchial flaments of alburnus alburnus lin.,1758 caught from enne dam lake for the first time in turkish fauna. the study carried out monthly between june 98 - may 99, and a total of 208 fish was collected. the distribution of parasitic copepods in relation with the length, sex of fish were recorded. the fishes were infested with p. longidigitus with a mean intensity of 6.2 and an prevalen ... | 2007 | 17594662 |
| chromosome studies of european cyprinid fishes: interspecific homology of leuciscine cytotaxonomic marker-the largest subtelocentric chromosome pair as revealed by cross-species painting. | leuciscine cyprinids possess a nearly invariant diploid number (2n = 50) with an extremely uniform karyotype comprising of 8 pairs of metacentric, 13-15 pairs of submetacentric and 2-4 pairs of subtelocentric (st) to acrocentric (a) chromosomes. the largest pair is characteristically an st/a element-the 'leuciscine' cytotaxonomic marker. previously, the interspecific homology of this chromosome pair could not be assessed owing to the inability to produce euchromatic or serial banding patterns. i ... | 2008 | 18709543 |
| the comparison of heavy metal accumulation ratios of some fish species in enne dame lake (kütahya/turkey). | the metal accumulation levels for muscle, skin, gill, liver and intestine tissues of some cyprinidae species (carassius carassius, condrostoma nasus, leuciscus cephalus and alburnus alburnus) in enne dame lake (kütahya/turkey), which is mostly fed by hot spring waters, were investigated. analyses were performed for copper (cu), zinc (zn), manganese (mn), iron (fe), cobalt (co), magnesium (mg), nickel (ni), chrome (cr) and boron (b) using inductively coupled plasma-optic emission spectroscopy (ic ... | 2009 | 18843546 |
| heavy metals and arsenic concentrations in ten fish species from the +áalek lakes (slovenia): assessment of potential human health risk due to fish consumption. | the study, which measured the concentrations of hg, pb, cd, zn and as in various fish tissues (muscle, gill and liver) of 10 fish species (abramis brama danubii, alburnus alburnus alburnus, barbus meridionalis petenyi, carassius auratius gibelio, cyprinus carpio, lepomis gibossus, leuciscius cephalus cephalus, perca fluviatilis fluviatilis, rutilus rutilus, scardinus erythrophtlalmus erythrophtlalmus) collected in the +áalek lakes, is the first survey regarding metal concentrations in fish speci ... | 2011 | 21713497 |
| mercury and cadmium induced structural alterations in the taste buds of the fish alburnus alburnus. | the ultrastructural damages of the taste buds of the fish, alburnus alburnus were studied after applying 0.05 microm and 0.5 microm mercury chloride as well as 0.1 microm and 1 microm cadmium chloride. the most conspicuous alterations were induced during the first week of heavy metal exposition. the main structural alterations are: 1) the swelling of sensory microvilli and cilia; 2) the extreme dilation of the rer tubules and nuclear membranes, which is most expressed after cadmium exposition; 3 ... | 2008 | 2633587 |
| high level multiple antibiotic resistance among fish surface associated bacterial populations in non-aquaculture freshwater environment. | freshwater fish, alburnus alburnus (bleak), were captured from lake mogan, situated in ankara, during spring. the surface mucus of the fish was collected and associated bacteria were cultured and isolated. by sequencing pcr-amplified 16s rna encoding genes, the isolates were identified as members of 12 different genera: acinetobacter, aeromonas, bacillus, brevundimonas, gordonia, kocuria, microbacterium, mycobacterium, pseudomonas, rhodococcus, and staphylococcus, in addition to one strain that ... | 2012 | 23039919 |
| who is who: an anomalous predator-prey role exchange between cyprinids and perch. | piscivory in cyprinids (cyprinidae) is extremely rare. specifically, common bream (abramis brama) and common carp (cyprinus carpio) are zooplanktivorous fish in deep lentic waters. nevertheless, we observed predation by these two cyprinids under natural conditions in the vír reservoir, czech republic. we conducted diet analysis for cyprinids caught by trawling and gillnets and the large amount of young-of-the-year (yoy) perch (perca fluviatilis), with sizes of 37-52 mm standard length, were foun ... | 2016 | 27276078 |
| within-lake distribution patterns of fish assemblages: the relative roles of spatial, temporal and random environmental factors in assessing fish assemblages using gillnets in a large and shallow temperate lake. | in this study, the relative role of spatio-temporal factors and associated environmental variables (water transparency and temperature) were quantified in relation to gillnet samples of fishes in a large and shallow lake (lake balaton, hungary). most of the variance (56·1%) in the relative abundance data (%) was related to the vertical segregation of fishes. this gradient substantially affected the catch per unit effort (cpue) by number of the dominant species, the surface-oriented bleak alburnu ... | 2013 | 23464547 |
| [infection with opistorchis larvae in the fish family cyprinidae in the ob-irtysh river basin in the tyumen region]. | fishes, such as ide (leuciscus idus), dace (leuciscus leuciscus), carpbream (abramis brama), roach (rutilus rutilus), and muvarica (alburnus alburnus), with different frequency and rate of invasion and abundance index were infested with larvae of o. felineus, m. bilis, and p. truncatum. there were the highest rates of fish infection with p. truncatum larvae in the subtaiga zone (the south of the region) and with o. felineus metacercariae in the northern subtaiga and taiga zones. in research, exp ... | 2013 | 23437717 |
| cross-species amplification of 41 microsatellites in european cyprinids: a tool for evolutionary, population genetics and hybridization studies. | cyprinids display the most abundant and widespread species among the european freshwater teleostei and are known to hybridize quite commonly. nevertheless, a limited number of markers for conducting comparative differentiation, evolutionary and hybridization dynamics studies are available to date. | 2010 | 20478030 |
| a fine structural review on the spermatozoa of cyprinidae with attention to their phylogenetic implications. | the fine structural organization and dimensions of spermatozoa from species of 4 subfamilies of the cyprinidae (barbus barbus, carassius carassius, cyprinus carpio carpio, cyprinus carpio haematopterus, abramis brama, alburnoides bipunctatus, alburnus alburnus, chalcalburnus chalcoides mento, chondrostoma nasus, hypophthalmichthys molitrix, leuciscus cephalus, phoxinus phoxinus, rutilus rutilus, rutilus meidingerii, scardinius erythrophthalmus, vimba vimba and ctenopharyngodon idella) are compar ... | 2009 | 19688692 |
| patterns of brain morphology in mid-european cyprinidae (pisces, teleostei): a quantitative histological study. | the present study considers patterns of brain morphology in 14 common species of mid-european cyprinidae. sixteen areas per brain were measured on serial cryostat sections by computer-aided planimetry. the volumes of these areas were expressed as % of the total brain volume. these brain centres (ranked according to falling values of the coefficient of variation vr, of the interspecific mean) are: lobus facialis, l. vagus, central acustic area, crista cerebellaris, bulbus olfactorius, eminentia g ... | 1988 | 3418119 |
| food supply and prey selection in planktivorous cyprinidae. | in small bavarian lakes, the gut contents of the cyprinid fish roach (rutilus rutilus), rudd (scardinius erythrophtalamus), bream (abramis brama) and bleak (alburnus alburnus), and the actural food supply during the fish's feeding period were examined in relation to the species composition of zooplankton. accompanied by feeding experiments in the laboratory, the selective effect of fish predation could be attributed to the distribution patterns of prey and predator in time and space, to the prey ... | 1982 | 28310615 |
| diel pattern of pelagic distribution and feeding in planktivorous fish. | the spatial distribution of juvenile roach (rutilus rutilus), rudd (scardinius erythrophtalamus), bream (abramis brama) and bleak (alburnus alburnus) was registered by echosounding during two years in small bavarian lakes. the gut contents of the fish were analysed in order to reconstruct their rhythmicity of food intake. fish were found in the pelagic zone only during the night, feeding before midnight with maximal rate. the vertical position of the fish was dependent on the water transparency ... | 1979 | 28310293 |
| evaluation of genotoxic pressure along the sava river. | in this study we have performed a comprehensive genotoxicological survey along the 900 rkm of the sava river. in total, 12 sites were chosen in compliance with the goals of globaqua project dealing with the effects of multiple stressors on biodiversity and functioning of aquatic ecosystems. the genotoxic potential was assessed using a complex battery of bioassays performed in prokaryotes and aquatic eukaryotes (freshwater fish). battery comprised evaluation of mutagenicity by sos/umuc test in sa ... | 2016 | 27631093 |
| does exposure to domestic wastewater effluent (including steroid estrogens) harm fish populations in the uk? | historic fisheries data collected from locations across the uk over several years were compared with predicted estrogen exposure derived from the resident human population. this estrogen exposure could be viewed as a proxy for general sewage (wastewater) exposure. with the assistance of the environment agency in the uk, fisheries abundance data for rutilis rutilis (roach), alburnus alburnus (bleak), leuciscus leuciscus (dace) and perca fluviatilis (perch) from 38 separate sites collected over 7 ... | 2017 | 28273597 |
| longitudinal profile of the genotoxic potential of the river danube on erythrocytes of wild common bleak (alburnus alburnus) assessed using the comet and micronucleus assay. | the joint danube survey 3 (jds3; the biggest river expedition in 2013) had offered the unique opportunity for a large-scale monitoring approach for biomarker response in feral fish collected along a danube stretch from kehlheim (de) to sulina (ro). the advantage of genotoxicity as a marker for pollution exposure in fish is the early detection of possible long-term effects such as cancer. therefore, genotoxicity was in the focus of the biomarker investigations in fish during the expedition. blood ... | 2016 | 27519325 |
| 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 ... | 2016 | 27327896 |
| enantioselective analysis of non-steroidal anti-inflammatory drugs in freshwater fish based on microextraction with a supramolecular liquid and chiral liquid chromatography-tandem mass spectrometry. | toxicity of pharmaceuticals to aquatic biota is still largely unknown, and no research on the stereoselective toxicity of chiral drugs to these organisms has been undertaken to date. because of the lack of analytical methods available for this purpose, this manuscript deals, for the first time, with the enantioselective analysis of the non-steroidal anti-inflammatory drugs (nsaids) ibuprofen, naproxen and ketoprofen in freshwater fish. the method was based on the microextraction of nsaids from f ... | 2015 | 25869485 |
| trace metal concentration and fish size: variation among fish species in a mediterranean river. | concentration of trace metals (al, mn, fe, co, ni, cu, zn, cd, pb and as) in the muscle of six fish species was analyzed to determine the variation with fish size and fish species in an iberian river with moderate metal pollution. al, fe and zn were the most abundant metals across sites. fish size and sampling site explained more variation than fish species, and a high intraspecific variability (among individuals) in metal loads was also observed. considering the most spread species, concentrati ... | 2014 | 24946163 |
| spatial distribution of brood-bearing females of limnetic species of cladocera. | in this study, the spatial distribution of brood-bearing females of five species of limnetic cladocerans (daphnia cucullata, d. longispina, bosmina coregoni, b. longirostris, diaphanosoma brachyurum) in the deep mesotrophic lake in relation to the predation pressure of planktivorous fish (roach rutilus rutilus, perch perca fluviatilis, catfish ictalurus nebulosus, white fish coregonus albula, bleak alburnus alburnus), and planktonic invertebrates (cyclopoids mesocyclops leuckartii, thermocyclops ... | 2013 | 24161243 |
| the presence of eu priority substances mercury, hexachlorobenzene, hexachlorobutadiene and pbdes in wild fish from four english rivers. | since 2007 about 200 to 300 fish per year--generally roach (rutilus rutilus) also a few bleak (alburnus alburnus) and eels (anguilla anguilla)--have been collected from a number of english river sites and stored at -80°c to build up a fish tissue archive as a resource for the monitoring of pollutants. some of the fish from the fish tissue archive from the years 2007-2011 were analyzed for substances in current and proposed european legislation regarding environmental quality standards (eqs) in b ... | 2013 | 23747559 |
| support vector machines to model presence/absence of alburnus alburnus alborella (teleostea, cyprinidae) in north-western italy: comparison with other machine learning techniques. | alburnus alburnus alborella is a fish species native to northern italy. it has suffered a very sharp decrease in population over the last 20 years due to human impact. therefore, it was selected for reintroduction projects. in this research project, support vector machines (svm) were tested as possible tools for building reliable models of presence/absence of the species. a system of 198 sites located along the rivers of piedmont in north-western italy was investigated. at each site, 19 physical ... | 2015 | 23199636 |
| eye fluke-induced cataracts in natural fish populations: is there potential for host manipulation? | manipulation of host phenotype (e.g. behaviour, appearance) is suggested to be a common strategy to enhance transmission in trophically transmitted parasites. however, in many systems, evidence of manipulation comes exclusively from laboratory studies and its occurrence in natural host populations is poorly understood. here, we examined the potential for host manipulation by diplostomum eye flukes indirectly by quantifying the physiological effects of parasites on fish. earlier laboratory studie ... | 2011 | 20800013 |
| effect of wave exposure dynamics on gut content mass and growth of young-of-the-year fishes in the littoral zone of lakes. | total length, body mass and gut content mass of young-of-the-year (yoy) perch perca fluviatilis, dace leuciscus leuciscus and bleak alburnus alburnus were recorded over the summer of 2006 at three littoral sites at upper lake constance. in p. fluviatilis and l. leuciscus, gut content mass correlated positively with wave-induced energy flux (e(f)) of the respective site and sampling day, while no correlation of gut content mass with e(f) was found in a. alburnus. it was assumed that benthivorous ... | 2010 | 20557626 |
| effects of 4-nonylphenol, fish predation and food availability on survival and life history traits of daphnia magna straus. | this study aimed to investigate the compound effect of environmentally relevant 4-nonylphenol (np) concentrations and natural stressors-namely fish predation and food availability-on daphnia magna, which were exposed to four np concentrations (0, 1, 5 and 10 microg l(-1)) under optimum or low food concentrations (1.00 and 0.075 mg c l(-1), respectively) in water (un)conditioned by a fish predator (alburnus alburnus). a(n) "environmentally relevant" and "no observable effect" concentration (noec) ... | 2010 | 20191318 |
| myxobolus erythrophthalmi sp. n. and myxobolus shaharomae sp. n. (myxozoa: myxobolidae) from the internal organs of rudd, scardinius erythrophthalmus (l.), and bleak, alburnus alburnus (l.). | during a survey of myxosporean parasites of cyprinid fish in hungary, infections caused by unknown myxobolus spp. were found in the internal organs of rudd, scardinius erythrophthalmus, and bleak, alburnus alburnus. small plasmodia developed in blood vessels of the kidney, liver, testes and intestinal wall. the parasites were studied on the basis of spore morphology and by histological and molecular methods. in most cases, plasmodia were surrounded by host tissue without a host reaction; however ... | 2009 | 19309417 |
| membrane transformations in degenerating rodlet cells in fishes of two teleostean families (salmonidae, cyprinidae). | rodlet cells (rcs) of teleosts are identified by their fibrillar capsule and peculiar inclusions, the rodlets, consisting of a club-like sac and a central dense core. former ultrastructural studies showing signs of hypertrophy of endoplasmic reticulum (er) were followed up in salmonids (oncorhynchus mykiss, salmo trutta l.) and compared with cyprinids (cyprinus carpio l., carassius auratus l., alburnus alburnus). focusing on membrane transformations, unusual undulations of the membranes of rodle ... | 2008 | 18951513 |
| comparative analysis of glucosephosphate isomerase, lactate dehydrogenase and malate dehydrogenase isozymes in 9 cyprinid species from italy. | the developmental and the tissue-specific expression of glucosephosphate isomerase (gpi), lactate dehydrogenase (ldh) and malate dehydrogenase (mdh) multilocus isozymes were analyzed in samples of leuciscus cephalus and the adult patterns compared with those of 8 additional italian cyprinid species: alburnus alburnus alborella, chondrostoma genei, l. lucumonis, l. souffia, rutilus rubilio, r. erythrophthalmus, scardinius erythrophthalmus and tinca tinca, the taxonomic status of many of them bein ... | 1998 | 18462025 |
| spatial variation of ddt and its metabolites in fish and sediment from cinca river, a tributary of ebro river (spain). | the cinca river is a tributary of ebro river in the ne of spain which receives input from different activities. one of the most important is related to an industry where ddt is used as an intermediate in the production of dicofol. this study evaluated the ddt contamination along the cinca river. sampling sites were selected up- and downstream from this industry. sediments and fishes (59 bleaks (alburnus alburnus) and 23 barbels (barbus graellsi)) were collected in 2002 and analyzed using a new a ... | 2008 | 17910971 |
| an evaluation of lsu rdna d1-d2 sequences for their use in species identification. | identification of species via dna sequences is the basis for dna taxonomy and dna barcoding. currently there is a strong focus on using a mitochondrial marker for this purpose, in particular a fragment from the cytochrome oxidase i gene (coi). while there is ample evidence that this marker is indeed suitable across a broad taxonomic range to delineate species, it has also become clear that a complementation by a nuclear marker system could be advantageous. ribosomal rna genes could be suitable f ... | 2007 | 17306026 |
| cytogenetics of the bleak (alburnus alburnus), with special emphasis on the b chromosomes. | some of the largest b chromosomes so far discovered in vertebrates are present in the cyprinid fish alburnus alburnus. previous cytogenetic analyses revealed a diploid chromosome number of 2n = 50. in addition, in some individuals one or two unusually large b chromosomes are present. two morphologically different types of b chromosomes were observed. the frequency of animals bearing a supernumerary chromosome was found to vary considerably between different populations. a more detailed analysis ... | 2006 | 16628494 |
| brominated flame retardants in alburnus alburnus from cinca river basin (spain). | thirty-two bleak fish (alburnus alburnus) from three places along the spanish river cinca, a tributary of ebro river, were collected for polybrominated diphenyl ether (pbde) and hexabromocyclododecane (hbcd) determinations. sampling sites corresponded to up- and downstream from monzon, a heavily industrialized town draining to the river. four different pbde congeners (bde-47, -153, -154 and -183) and hbcd were found at levels ranging from not detected (nd) to 573 ng/g wet weight for total pbdes ... | 2005 | 15519725 |
| the giant b chromosome of the cyprinid fish alburnus alburnus harbours a retrotransposon-derived repetitive dna sequence. | the cyprinid fish alburnus alburnus possesses one of the largest supernumerary chromosomes in all vertebrates. in the present study, amplified fragment length polymorphism analyses (aflp) and fluorescence in-situ hybridization (fish) were performed in order to characterize these extraordinary chromosomes in detail. sequence analysis of the b chromosome-specific dna revealed a strong homology to a drosophila gypsy/ty3 retrotransposon and also to a medaka (oryzias latipes) one. the sequence is hig ... | 2003 | 12675303 |
| survey on myxobolus infection of the bleak (alburnus alburnus l.) in the river danube and in lake balaton. | in a three-year survey of myxosporean infections of the bleak (alburnus alburnus), involving the examination of 205 fish specimens from the river danube and 50 from lake balaton, four myxobolus species (two gill parasites, one fin parasite and a species parasitising the skeletal muscles) were detected. two of the species could be identified as m. alburni and m. obesus. of the other two species, the gill parasite proved to be a hitherto undescribed species which is described here as a new species ... | 2000 | 11402659 |
| comparative study of acetylcholinesterase and butyrylcholinesterase in brain and serum of several freshwater fish: specific activities and in vitro inhibition by ddvp, an organophosphorus pesticide. | a comparative study of specific activities and in vitro inhibition of brain and serum acetylcholinesterase (ache; ec 3.1.1.7) and serum butyrylcholinesterase (bche; ec 3.1.1.8) by ddvp, an organophosphorus pesticide, was conducted in 11 freshwater teleost species belonging to four families (cyprinidae; common carp cyprinus carpio, bream abramis brama, blue bream a. ballerus, white bream blicca bjoerkna, roach rutilus rutilus, bleak alburnus alburnus, ide leuciscus idus; percidae: perch perca flu ... | 2000 | 11246494 |
| structure and function of the ovarian cavity and oviduct and composition of the ovarian fluid in the bleak, alburnus alburnus (teleostei, cyprinidae). | the ovarian cavity and the oviduct of alburnus alburnus were investigated by histological, fine structural and (enzyme-) histochemical methods, and the ovarian fluid was analysed. within the ovary there exists a system of communicating cavities, the ovarian cavity, which caudally continues with the oviduct. the ovarian cavity is bordered by an epithelium which is secretory active and covered with microvilli. it is involved in the formation of an ionic gradient in the ovarian fluid, in the secret ... | 1997 | 18627821 |
| changing handling times during feeding and consequences for prey size selection of 0+ zooplanktivorous fish. | the interrelationship of fish size, prey size and handling time within a 15-min feeding period was studied in three size groups of 0 + roach, rutilus rutilus, and bleak, alburnus alburnus. four size classes of cladoceran prey were used to measure changes in feeding rate and handling time from initial rapid feeding to sustained feeding. observed differences in increase of handling time between prey size classes led to a change in the prey profitability ranking of those size classes within the fir ... | 1995 | 28307594 |
| fine structural characterization of the olfactory epithelium and its response to divalent cations cd2+ in the fish alburnus alburnus (teleostei, cyprinidae): a scanning and transmission electron microscopic study. | the olfactory organ of the fish alburnus alburnus consists of 22 lamellae arranged into rosette like structure and are built up by supporting, gland, basal, ciliated and unspecialized epithelial cells, as well as receptor cells with microvillous, ciliated or rod shape dendritic endings. the spatial distribution of the supporting and gland cells can be considered homogeneous while the ciliated epithelial cells are dominant on the latero-marginal areas of the lamellae with a 10 +/- 3/1000 microns ... | 1993 | 8369796 |
| effect of mercury on the fish (alburnus alburnus) chemoreceptor taste buds. a scanning electron microscopic study. | taste buds (tbs) were investigated by scanning electron microscope on various parts of the oral cavity of the bleak. (alburnus alburnus) after differently long exposures to mercury (300 micrograms/l hg++). this low concentration of mercury did not result in lethal effect on the bleak even after 19 days long exposure, but produced morphological changes on the tbs, which showed duration dependency. the first sign of the morphological alteration on the tbs was observed after three days long exposur ... | 1986 | 3442169 |
| uptake and distribution of radioiodine, and the effect of ambient nitrate, in some fish species. | 125i uptake by the thyroid was most pronounced in the smelt (osmerus eperlanus), perch (perca fluviatilis), rainbow trout (salmo gairdneri), roach (rutilus rutilus) and bleak (alburnus alburnus). unlike other tissues, only the muscle in the species studied no relative accumulation of 125i as compared to the ambient water. the crusian carp (cyprinus carassius) indicated the lowest levels of accumulation of 125i among the species tested. thyroid radioiodine concentration was independent of the len ... | 1985 | 2858311 |
| chlorinated paraffins: disposition of a polychloro-[1-14c]-hexadecane in carp (cyprinus carpio) and bleak (alburnus alburnus). | the disposition of polychloro-[1-14c]hexadecane (pchd, 34% chlorine w/w) was studied in carp (cyprinus carpio) and bleak (alburnus alburnus). after intra-arterial (i.a.) injection in carp about 6% of dose was excreted as 14co2 in 96 h. the autoradiographic distribution pattern after administration of pchd to carp (i.a.) and bleak (up to 14 days of exposure in pchd-contaminated water) was characterized by a strong labelling in the bile/intestinal contents. high radioactivity also appeared in the ... | 1983 | 6419402 |
| [changes in the content of chlorinated pesticides and polychlorobiphenyls in the fishes club (leuciscus cephalus) and bleak (alburnus alburnus) in the po]. | | 2013 | 6817305 |
| dna reassociation kinetics in diploid and phylogenetically tetraploid cyprinidae. | four diploid and three phylogenetically tetraploid cyprinidae (ostariophysi) have been characterized as for nuclear dna content, modal chromosome number and dna reassociation kinetics (hydroxyapatite chromatography). among the diploid species nuclear dna content (10(-12) g dna/2c) was 1.62 for tinca tinca, 1.87 for scardinius erythrophthalmus, 2.53 for leuciscus cephalus and 2.75 for alburnus alburnus, while the phylogenetically tetraploid species carassius auratus, barbus barbus and cyprinus ca ... | 1979 | 490124 |
| [influence of body weight on the sensitivity of alburnus alburnus alborella to some toxic substances]. | | 2013 | 1052792 |
| [use of alburnus alburnus alborella in evaluation of the toxicity of waste waters. ii. variations of mean survival time as a function of the volume of the liquid]. | | 2013 | 1052791 |
| [use of alburnus alburnus alborella in evaluation of the toxicity of sewage. i. comparative research with respect to carassius auratus]. | | 2006 | 4670269 |
| | cleaning symbioses are described for the first time between fresh water fishes in their natural habitat. the symbioses are only facultative and were observed intra-and intorspecifically between members of the species rhodeus amarus, alburnus alburnus, tinca, tinca and juvenile rutilus rutilus, scardinius erythrophthalmus and perca fluviatilis.when the motivation to become cleaned is transmitted within a school of fish, mutual cleaning and inviting each other is common. the first stage in cleanin ... | 1971 | 28310757 |