| the occurrence of caryophyllaeus laticeps in the nase chondrostoma nasus from austrian rivers: possible anthropogenic factors. | between april 2003 and november 2006 a total of 198 nase chondrostoma nasus (l.) were examined for parasites from seven river sites in austria. the selected sites showed different levels of anthropogenic alterations in river morphology ranging from pristine areas, with minor anthropogenic alterations, to strongly physically altered rivers. a variety of parasites were recovered from the skin, gills, swimbladder and eyes, with caryophyllaeus laticeps (pallas) being identified as the only cestode s ... | 2008 | 18053299 |
| heavy metals in the nase, chondrostoma nasus (l. 1758), and its intestinal parasite caryophyllaeus laticeps (pallas 1781) from austrian rivers: bioindicative aspects. | tissue samples from 121 adult specimens of the predominantly herbivorous fish species nase, chondrostoma nasus (l. 1758), from five river sites in austria were analyzed for their metal content. sediments and water samples of the sites show different levels of metal load, with only one site considered being polluted with metals. the concentrations of cadmium, copper, lead, and zinc in the tissue of the gills, muscle, intestine, and liver of the fish were determined by inductively coupled plasma-o ... | 2008 | 18347839 |
| 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 |
| morphological polymorphism in tapeworms: redescription of caryophyllaeus laticeps (pallas, 1781) (cestoda: caryophyllidea) and characterisation of its morphotypes from different fish hosts. | recent morphological and molecular data have shown that one of the most common parasites of freshwater fish in the palaearctic region, the cestode caryophyllaeus laticeps (pallas, 1781) (eucestoda: caryophyllidea), is highly polymorphic. five distinct morphotypes of c. laticeps, largely corresponding to different fish hosts and representing separate, yet closely related genetic lineages, have been recognised and they are characterised in the present paper. morphotype 1 from breams, abramis brama ... | 2015 | 25655116 |
| 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 |
| evaluation of pesticides and metals in fish of the dniester river, moldova. | the dniester river is one of the largest rivers in eastern europe and receives input from numerous anthropogenic activities. in october 2001, fish samples (abramis brama, rutilus rutilus heckeli, perca fluviatilis, chondrostoma nasus, carassius auratus gibelio, and cyprinus carpio) were collected and analyzed for metals and various pesticides. maximum total ddt pesticide concentrations were between 27.7 and 34.2 ng/g wet weight in muscles and gonads, respectively. dde isomers comprised up to 70% ... | 2005 | 15914239 |
| 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 |
| content of selected metals in muscle of cyprinid fish species from the nitra river, slovakia. | this study presents a rate of bioaccumulation of some metal concentrations in the muscle of five common cyprinid fish species (gudgeon - gobio gobio, europen chub - leuciscus cephalus, barbel - barbus barbus, roach - rutilus rutilus, and nase - chondrostoma nasus). | 2012 | 23353849 |
| arsenic speciation patterns in freshwater fish. | muscle of 16 freshwater fish (9 different species belonging to 4 different families) was analysed for arsenic species using hplc separation (anion and cation exchange) followed by on-line uv-decomposition, hydride generation and afs detection. the main arsenic compounds found in the extracts were arsenobetaine (asb), which accounted for 92-100% of extractable arsenic in species of salmonids (salmo marmoratus, oncorhynchus mykiss, salmo trutta m. fario), and dimethylarsinic acid (dmaa), which acc ... | 2004 | 18969382 |
| morphodynamic effects on the habitat of juvenile cyprinids (chondrostoma nasus) in a restored austrian lowland river. | at the sulm river, an austrian lowland river, an ecologically orientated flood protection project was carried out from 1998-2000. habitat modeling over a subsequent 3-year monitoring program (2001-2003) helped assess the effects of river bed embankment and of initiating a new meander by constructing a side channel and allowing self-developing side erosion. hydrodynamic and physical habitat models were combined with fish-ecological methods. the results show a strong influence of riverbed dynamics ... | 2008 | 18437454 |
| monitoring pollution in river mureş, romania, part ii: metal accumulation and histopathology in fish. | as a part of an exposure and effect monitoring conducted along the river mureş, western romania in 2004, the health status of two indigenous fish species, sneep (chondrostoma nasus) and european chub (leuciscus cephalus) was investigated upstream and downstream the city of arad. in fish, histopathology was assessed in liver and gills, and heavy metals (cadmium, copper, lead and zinc) were analyzed in liver samples. in both fish species, histopathological reactions in the gills (epithelial liftin ... | 2008 | 17876715 |
| novelties in hybrid zones: crossroads between population genomic and ecological approaches. | interspecific hybridization is widespread, occurring in a taxonomically diverse array of species. the cyprinidae family, which displays more than 30% hybridization, is a good candidate for studies of processes underlying isolation and speciation, such as genetic exchange between previously isolated lineages. this is particularly relevant in the case of recent hybridization between an invasive species, chondrostoma nasus nasus (from eastern europe), and c. toxostoma toxostoma (a threatened specie ... | 2007 | 17406681 |
| the parasite community of the nase chondrostoma nasus (l. 1758) from austrian rivers. | between april 2003 and november 2006 a total of 191 individuals of the predominantly herbivorous fish species nase chondrostoma nasus (l. 1758) were examined for parasites from six river sites in austria. the following parasite taxa were recovered - ciliata: trichodina sp., chilodonella piscicola, ichthyophthirius multifiliis; myxozoa: myxobolus muelleri (cysts) and myxobolus sp. (cysts); monogenea: dactylogyrus vistulae, d. chondrostomi and dactylogyrus spp., gyrodactylus sp., diplozoon paradox ... | 2010 | 20831848 |
| [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 ... | 2010 | 20597057 |
| genotoxic and histopathological effects of water pollution on two fish species, barbus capito pectoralis and chondrostoma nasus in the büyük menderes river, turkey. | the genotoxic and histopathological effects of water pollution were investigated on two fish species caught from the buyuk menderes river and from its tributary, the cine stream. the buyuk menderes basin is an important agricultural area in turkey. the levels of copper, zinc, cadmium, cobalt, and lead were measured at the surface of the water and in gills, liver, and muscle tissue of chondrostoma nasus and barbus capito pectoralis. in some tissues, the concentrations of some of these metals exce ... | 2008 | 18214389 |
| whirling disease: host specificity and interaction between the actinosporean stage of myxobolus cerebralis and rainbow trout oncorhynchus mykiss. | scanning electron microscopic studies were conducted on rainbow trout oncorhynchus mykiss in the first 60 min after their exposure to the triactinomyxon spores of myxobolus cerebralis. the results demonstrated that as early as 1 min post exposure the whole process, from the attachment of the triactinomyxon spores to the complete penetration of their sporoplasm germs, had occurred. the triactinomyxon spores sought out the secretory openings of mucous cells of the epidermis, the respiratory epithe ... | 1999 | 10073310 |
| effects of chemical pollution on the activities of hepatic xenobiotic metabolizing enzymes in fish from the river rhône. | polychlorobiphenyl (pcbs) levels and hepatic xenobiotic metabolizing enzyme activities were measured in fish from three locations of the river rhône to study the consequences of a constant loading of pcbs from a pcb incineration plant. our results show that levels of pcbs and enzyme activities were higher in fish living downstream from the plant than in fish from two locations upstream, suggesting enzyme induction by pcbs (known to be potent inducers in laboratory conditions). enzyme activities ... | 1988 | 3145559 |
| physical changes in specimens of five species of cyprinidae preserved in ethanol and frozen. | preservation in 30% ethanol and freezing to a temperature of -20 ± 2° c is an appropriate method for measurement of fish eggs, larvae and juveniles. egg diameter of the common carp cyprinus carpio increased insignificantly by 1·32% after preservation compared with live size. the total length (lt ) of 1 day post-hatching (dph) larvae as well as the standard length (ls) of 16 dph larvae of c. carpio increased significantly (2·95 and 1·50%, respectively) after preservation. egg diameter as well as ... | 2014 | 25041177 |
| 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 |
| spatial monitoring of heavy metals in the inland waters of serbia: a multispecies approach based on commercial fish. | the study monitored the contamination of fish muscle tissue by elements al, as, cd, co, cr, cu, fe, hg, mn, ni, pb, and zn at 17 sampling sites, in order to assess the pollution status of the main rivers in serbia. of the six commercially important fish species included in the study (pikeperch sander lucioperca, catfish silurus glanis, bream abramis brama, barbel barbus barbus, chub squalius cephalus, nase chondrostoma nasus), the bioconcentration factor (bcf) indicated that benthivore bream and ... | 2016 | 26857004 |
| cryopreservation of spermatozoa in cyprinid fishes. | the present study investigated semen cryopreservation in cyprinid fish using computer-assisted sperm motility analysis for viability control. spermatozoa of the bleak, chalcalbumus chalcoides, were used as a basic model to describe the toxic and cryoprotective effects of internal and external cryoprotectants, their most effective concentrations and combinations, the freezing and thawing conditions, and the effects of equilibration. we also used these data to develop a cryopreservation protocol f ... | 2000 | 11191871 |
| a pcr-based method for diet analysis in freshwater organisms using 18s rdna barcoding on faeces. | the development of dna barcoding from faeces represents a promising method for animal diet analysis. however, current studies mainly rely on prior knowledge of prey diversity for a specific predator rather than on a range of its potential prey species. considering that the feeding behaviour of teleosts may evolve with their environment, it could prove difficult to establish an exhaustive listing of their prey. in this article, we extend the dna barcoding approach to diet analysis to allow the in ... | 2010 | 21564994 |
| effect of initial size on daily growth and survival in freshwater chondrostoma nasus larvae: a field survey. | effects of initial size on the growth and survival of a freshwater fish, chondrostoma nasus, were tested in a field survey, where individually tagged larvae were introduced into a potential nursery habitat. characteristics of individual daily growth trajectories were utilized as a basis to explain growth, as well as survival patterns, in relation to ontogeny. initial size only affected growth rates during the larval phase. survival patterns could not be explained solely based on size-selective m ... | 2009 | 20735609 |
| the first record of a natural hybrid of the roach rutilus rutilus and nase chondrostoma nasus in the danube river basin, czech republic: morphological, karyological and molecular characteristics. | morphological (meristic and morphometric traits), karyological and molecular (microsatellites, cytochrome b) analyses were performed to characterize a hybrid of the roach rutilus rutilus and nase chondrostoma nasus. meristic and morphometric traits were different between hybrid and both parental species. the number of chromosomes found in hybrid specimen indicated that this individual represents the post-f(1) generation of hybrids and the microsatellite analysis of the hybrid showed the presence ... | 2009 | 20735664 |
| trade-off between morphological convergence and opportunistic diet behavior in fish hybrid zone. | the invasive chondrostoma nasus nasus has colonized part of the distribution area of the protected endemic species chondrostoma toxostoma toxostoma. this hybrid zone is a complex system where multiple effects such as inter-species competition, bi-directional introgression, strong environmental pressure and so on are combined. why do sympatric chondrostoma fish present a unidirectional change in body shape? is this the result of inter-species interactions and/or a response to environmental effect ... | 2009 | 19860907 |
| when anthropogenic river disturbance decreases hybridisation between non-native and endemic cyprinids and drives an ecomorphological displacement towards juvenile state in both species. | understanding the impact of non-native species on native species is a major challenge in molecular ecology, particularly for genetically compatible fish species. invasions are generally difficult to study because their effects may be confused with those of environmental or human disturbances. colonized ecosystems are differently impacted by human activities, resulting in diverse responses and interactions between native and non-native species. we studied the dynamics between two cyprinids specie ... | 2015 | 26561027 |
| ultrastructural comparative investigations on the hypophysary cells in fresh-water teleosts under natural conditions. the glycoproteic thyreotrope cells. | the structural und ultrastructural characteristics of the glycoproteic hypophysary cells - considered as tsh producers - were studied with optical and electron microscopical means in 7 species of freshwater teleosts: leuciscus cephalus l., barbus meridionalis petényi h., chondrostoma nasus l., gobio gobio carpathicus vlad., phoxinus phoxinus l., nemachylus barbatulus l. and cobitis taenia l., during the reproductive period and in the period of sexual rest. these cells are present in a relatively ... | 1983 | 6649780 |
| the early life history stages of riverine fish: ecophysiological and environmental bottlenecks. | fish are good indicators of the environmental health of rivers and their catchments as well as important conservation targets. bioindication has to be based on an understanding of the requirement of characteristic species with regard to: (a). the match/mismatch between reproductive strategies and environmental conditions. (b). the niche dimensions of critical stages vis-a-vis the key conditions. (c). the availability of microhabitats along the ontogenetic niche profiles, i.e. the connectivity fr ... | 2002 | 12443905 |
| monitoring pollution in river mureş, romania, part iii: biochemical effect markers in fish and integrative reflection. | along a downstream stretch of river mureş, romania, adult males of two feral fish species, european chub (leuciscus cephalus) and sneep (chondrostoma nasus) were sampled at four sites with different levels of contamination. fish were analysed for the biochemical markers hsp70 (in liver and gills) and hepatic erod activity, as well as several biometrical parameters (age, length, wet weight, condition factor). none of the biochemical markers correlated with any biometrical parameter, thus biomarke ... | 2007 | 16957855 |
| three new species of myxobolus bütschli, 1882 (myxozoa: myxobolidae) infecting the common nase chondrostoma nasus (l.) in the river danube. | the common nase chondrostoma nasus (l.) is a frequent cyprinid fish in the river danube. in a survey on its infection with myxosporeans, eight different myxobolus spp. spore types were found in the gills, swim bladder, fins and intestinal wall. of these, spore types representing three species were studied in detail by morphological and molecular methods. based on the differences in 18s rdna sequences, two new species of myxobolus bütschli, 1882 from the gills and one from the swim bladder are de ... | 2015 | 26358070 |
| field evidence of reproduction impairment through sperm dna damage in the fish nase (chondrostoma nasus) in anthropized hydrosystems. | this work aims to explore in the field the relationship between the integrity of sperm dna and the quality of offspring as a possible cause of the decline of a feral fish population through reproduction impairment. mature nase (chondrostoma nasus) were caught during the breeding season in three locations (a-c) of the rhône river basin and gametes collected by stripping. sampling locations were chosen according to the following gradient of contamination due to human activities on the watershed: a ... | 2015 | 26523677 |
| dna adduct detection: some applications in monitoring exposure to environmental genotoxic chemicals. | in the assessment of genotoxic risk factors in the environment, the measurement of dna adducts in aquatic organisms and in plants may have considerable implications. using 32p-postlabelling, we have detected dna adducts in the liver of carp (chondrostoma nasus) from the river rhône (france), both downstream and upstream from a polychlorinated biphenyl incineration plant. some of the dna adducts were specific to downstream fish, suggesting a differential pattern of exposure. we have also detected ... | 1993 | 8225509 |
| use of the fish cytochrome p-450-dependent 7-ethylresorufin o-deethylase activity as a biochemical indicator of water pollution. study of the liver and the kidney of male and female nase (chondrostoma nasus) from the river rhône. | 7-ethylresorufin o-deethylase (erod) activity and the cytochrome p-450 content of liver and kidney microsomes were measured in male and female nase (chondrostoma nasus) from the river rhône (france) caught downstream and upstream of a pcb incineration plant. concurrently, pcb concentrations in the flesh of nase were also measured. the results showed that sex affected hepatic, but not renal, erod activity during gonadal maturation. the male nase demonstrated higher activity than the female. upstr ... | 1990 | 2128133 |
| characterization of some monooxygenase activities and solubilization of hepatic cytochrome p-450 in two species of freshwater fish, the nase (chondrostoma nasus) and the roach (rutilus rutilus). | 1. hepatic monooxygenase activities were studied in microsomal fractions from two species of freshwater fish, the nase (chondrostoma nasus) and the european roach (rutilus rutilus). 2. these activities were determined by using four substrates, 7-ethoxycoumarin, 7-ethoxyresorufin, benzo(a)pyrene, and 2,5-diphenyloxazole and were characterized according to ph, temperature, cofactors, and the differential effects of two inhibitors, metyrapone and alpha-naphthoflavone. 3. solubilization of microsome ... | 1987 | 2890492 |
| does invasive chondrostoma nasus shift the parasite community structure of endemic parachondrostoma toxostoma in sympatric zones? | the composition of parasite communities in two cyprinid species in southern france - native and threatened parachondrostoma toxostoma and introduced chondrostoma nasus - was investigated. in sympatry, these two species form two hybrid zones in the durance and ardeche rivers. due to their different feeding preference and habitat positions in allopatry, we supposed a difference in parasite communities between fish species. we expected more similar parasite communities in sympatric zones associated ... | 2012 | 22967821 |
| non-homogeneous combination of two porous genomes induces complex body shape trajectories in cyprinid hybrids. | hybridization is a common phenomenon in fish and is considered to be a major source of diversification. deciphering the remoulding of genomic regions and phenotypes in zones where hybrid specimens occur is of particular interest to elucidate the emergence of evolutionary novelties. this approach is particularly challenging because the first step of hybridization seems to be the most important stage in the emergence of hybrid lineages. however, the signal can be significantly altered after only a ... | 2013 | 23634901 |
| genomic porosity between invasive chondrostoma nasus and endangered endemic parachondrostoma toxostoma (cyprinidae): the evolution of mhc iib genes. | two cyprinid species, parachondrostoma toxostoma, an endemic threatened species, and chondrostoma nasus, an invasive species, live in sympatry in southern france and form two sympatric zones where the presence of intergeneric hybrids is reported. to estimate the potential threat to endemic species linked to the introduction of invasive species, we focused on the dab genes (functional mhc iib genes) because of their adaptive significance and role in parasite resistance. more specifically, we inve ... | 2013 | 23824831 |
| biological influences on inter- and intraspecific isotopic variability among paired chondrostome fishes. | this study aimed at examining resource partitioning both at the inter- and intraspecific levels between paired chondrostome fishes: chondrostoma nasus, the nase, c. toxostoma, the sofie, and their hybrid. the study was performed in the south of france and concerned a main river (the durance river) and a tributary (the buech river). in these rivers, c. nasus was an introduced species, originating in central europe, and c. toxostoma was an endemic congener, in the south of france. stable isotope a ... | 2010 | 20688282 |
| intercalibration of hydroacoustic and mark-recapture methods for assessing the spawning population size of a threatened fish species. | hydroacoustic counting and a three-year mark-recapture study with passive integrated transponders (pit tags) were used to estimate the size of a spawning population of nase chondrostoma nasus, a threatened potamodromous cyprinid that undertakes annual spawning migrations into a tributary of the danube river. in 2005, the estimates of the size of the spawning population from the hydroacoustic counts (n = 2234, 95% cl 1929-2538) and from the jolly-seber model (n = 1198, 95% cl 461-5842) correspond ... | 2009 | 20738619 |
| [intestinal parasites of chondrostoma nasus (linnaeus, 1758) from the bug and krzna rivers]. | | 1968 | 5709750 |
| partial characterization of transferrins of some species of the family cyprinidae. | 1. transferrins of five cyprinid fishes (tinca tinca, ctenopharyngodon idella, chondrostoma nasus. hypophthalmichthys molitrix and aristichthys nobilis) were isolated in a pure state using sephadex g-100, deae-sephadex and sp-sephadex. 2. all the transferrins are heterogeneous. in h. molitrix and a. nobilis the heterogeneity is caused partly, but not exclusively, by the presence of sialic acid; in the other species it is independent of sialic acid. 3. molecular weights ranging from 69,900 (t. ti ... | 1983 | 6839722 |
| parvalbumin v of the cyprinidae chondrostoma nasus l. white muscles-purification and characterization. | | 1973 | 4757955 |
| [a new type of parvalbumin found in extracts of weak ionic strength from white muscle of chondrostoma nasus l]. | | 1973 | 4122926 |