An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Barbus barbus; Bayesian theory; age structure; dynamic models; fish; habitats; juveniles; population dynamics; riparian areas; rivers; uncertainty
Abstract:
... Restoration of spawning and juvenile habitats is often used to restore fish abundances in rivers, although often with unclear results. To study the effects of habitat limitations on the common barbel (Barbus barbus), a riverine litophilic cyprinid fish, an age-structured population model was developed. Using a Bayesian modeling approach, spawning and fry (0+ juvenile) habitat availability was inte ...
... Fertilization is one of the most important procedures in artificial reproduction and it directly affects the reproduction outcome. When there is optimization of fertilization, there can be a positive effect on subsequent reproductive processes and economic aspects of aquaculture. This study was conducted to determine time for which oocytes and sperm of barbel Barbus barbus retain fertilization cap ...
Alburnoides bipunctatus; Anguilla anguilla; Barbus barbus; Chondrostoma nasus; Salmo salar; Salmo trutta; biometry; fish; fish behavior; riparian areas; water power
Abstract:
... During their life cycle, fish carry out distinct movements within rivers and migrate upstream and downstream to reproduce, to feed, and to shelter in refuge habitats. During downstream movements, they can incur severe injuries that may be lethal directly or indirectly over time when passing through hydropower plants or when being entrained at other water intakes. Horizontal bar rack bypass systems ...
... Genetic introgression with native species is recognized as a detrimental impact resulting from biological invasions involving taxonomically similar invaders. Whilst the underlying genetic mechanisms are increasingly understood, the ecological consequences of introgression are relatively less studied, despite their utility for increasing knowledge on how invasion impacts can manifest. Here, the eco ...
... Fish‐habitat associations are poorly known in offshore areas of very large rivers. We examined physical habitat structure and its effect on habitat use and assemblage formation of benthic fishes in the main channel of the Danube River, Hungary. Principal component analysis of physical variables showed that sample unit (i.e., 500 m long reaches) and cross‐channel transect‐level data of correspondin ...
... As a result of evolution, various finfish species have developed different breeding strategies. However, there are some similarities, and one of them is the positive effect of ovarian fluid on spermatozoa. The opposite of this phenomenon was found in the common barbel (Barbus barbus). The present study analyzed the effect of ovarian fluid (OF), distilled water (DW) and Woynarovich solution (WS) on ...
... Fish passes facilitate fish movement in fragmented river systems, yet they can also provide important habitat functions. This study investigated the fish community composition of different constructed habitat types (fluvial habitats, floodplain ponds) within fish passes in relation to habitat characteristics in order to deduce recommendations for fish-friendly designs of such structures. Fish comm ...
... Parasite distribution among hosts is a fundamental aspect of host–parasite interactions. Aggregated parasite distributions within and across host species are commonly reported and potentially influenced by many factors, whether host or parasite specific, or related to host–parasite encounter and compatibility. Yet, the respective role of each in observed parasite distributions are often unclear. H ...
... The spawning success of lithophilic salmonids is strongly influenced by the fine sediment content (“fines”) of spawning substrates, yet knowledge on the impacts of fines on the spawning of non‐salmonid lithophiles remains limited, despite their ecological and socio‐economic importance in European rivers. Consequently, the aim here was to use an ex‐situ experiment to investigate the impact of sand ...
Barbus barbus; carbon; ecology; fish; fish meal; fractionation; freshwater; macroinvertebrates; sport fishing; stable isotopes; subsidies
Abstract:
... European barbel Barbus barbus is a recreationally important riverine fish that is widely introduced outside of its natural range. Contemporary angling practises for B. barbus involve the use of baits based on marine fishmeal (MF). MF is isotopically distinct from freshwater prey via highly enriched δ13C and thus its dietary influence on B. barbus can be tested via differences in fractionation fact ...
... Spawning substrate quality is a major factor influencing the early ontogeny of European nase (Chondrostoma nasus), a target species of conservation. Analogous to findings from salmonids, restoration of spawning grounds was hypothesized to enhance spawning, development and thus recruitment success of nase, by improving the substrate quality, and subsequently spawning site use, egg infiltration and ...
... The ADONIS:CE instrument has been used in the field of congeners species, Barbus barbus – of economic interest and Barbus meridionalis – of conservation interest, to build a support-system model for management decision-making. Analysis of the habitat needs and the indicators for favorable conservation status have identified pressures and threats to these fish species for which management actions h ...
... Floodplains were extensively altered by anthropogenic activities, resulting in modified flow dynamics essential for maintaining diverse riverine communities. There is growing interest in restoring environmental flows by artificially modulating discharge as a potential management option in regulated rivers. In the context of a large floodplain restoration project along the upper Danube, the effects ...
... River engineering measures of the last two centuries have severely impacted the fish coenoses of all larger rivers in Europe by creating river barriers, replacing natural shores with riprap-reinforced banks, and installing artificial structures that changed the hydrology of inshore habitats. As a result, fluvial specialists have declined and were replaced by generalists. Consequently, there is an ...
Barbus barbus; acoustics; autumn; fish; fisheries; invasive species; river regulation; rivers; species dispersal; sport fishing; spring; telemetry; weirs; England
Abstract:
... Riverine fish are often adversely affected by impoundments that reduce longitudinal connectivity and impede movements, while river fishery performance is often enhanced by introductions of non-indigenous fishes that diversify angling opportunities. The influence of factors (including impoundment) on the movements of European barbel Barbus barbus, a fish frequently introduced for angling, was teste ...
... The occurrence at different trophic levels of 17 poly- and perfluoroalkyl substances (PFASs), including perfluoroalkyl acids (PFAAs) and some of their precursors (e.g., perfluoroalkane sulfonamides, 6:2 fluorotelomer sulfonate (6:2 FTSA)), was investigated in riverine freshwater food webs in Southeastern France. Two fish species (Barbus barbus and Squalius cephalus) and various invertebrate taxa w ...
... Fish samples of different species (i.e. rainbow trout (Onchorhynchus mykiss), barbel (Barbus barbus) and European chub (Squalius cephalus)) were collected from the Sava River Basin for a preliminary investigation of the levels of PCDD/Fs, PCBs, PBDEs and PFAS as a whole. Concentrations of PCDD/Fs, in terms of pg WHO-TEQ/g ww, were below the maximum limit established at the Commission Regulation (E ...
Barbus barbus; Cestoda; Contracaecum; Pomphorhynchus laevis; autumn; community structure; environmental factors; fish; helminths; intermediate hosts; larvae; new host records; species diversity; spring; summer; Bulgaria; Danube River
Abstract:
... Species diversity and composition of the parasite communities of barbel (Barbus barbus) at the infracommunity and component community levels were studied in the Lower Danube River, Bulgaria. During the two-year investigations, five parasite species have been found in 92 host fish: Bathybothrium rectangulum (Cestoda), Acanthocephalus anguillae and Pomphorhynchus laevis (Acanthocephala) and larval s ...
... Ecological theory on the trophic impacts of invasive fauna on native competitors is equivocal. Whilst increased interspecific competition can result in coexisting species having constricted and diverged trophic niches, the competing species might instead increase their niche sizes to maintain energy intakes. Empirical experiments can test invasion theory on competitive interactions and niche sizes ...
... Despite of structural deficits, highly modified water bodies (HMWB) contain remnant populations of endangered fish that have high conservation value. Restoration in HMWBs underlies different principles when compared to natural rivers because of impaired river dynamic processes. The objective herein was to assess the contribution of restored habitats of the River Günz, Germany to fish diversit ...
... Major sections of today’s rivers are man made and do not provide the essential requirements for riverine fish. A nature-like fish by-pass system in Vienna-Freudenau was assessed for its function as a fish habitat. The study was conducted continuously over 3 years; 15 years after construction of the by-pass. The chosen nature-like construction of the by-pass system functions like natural tributarie ...
Barbus barbus; Squalius cephalus; adults; anatomy and morphology; ecological differentiation; fish; fish communities; habitat preferences; indigenous species; juveniles; niches; rivers; species diversity; stable isotopes; trophic relationships
Abstract:
... Following their invasion, non-indigenous fish can potentially exclude native fishes from their original niches through competition, or can partition in their resource use with native species to facilitate co-existence. Here, using stable isotope analysis, the trophic interactions of invasive European barbel Barbus barbus and other fishes were tested in an invaded river of relatively low fish speci ...
... The purpose of this study was to investigate the effects of the European barbel Barbus barbus (L., 1758) invasion in the Tiber River basin (Italy) on the native Tiber barbel Barbus tyberinus Bonaparte, 1839, verifying whether the co-occurrence played a negative impact on growth rate and relative weight. Fish census data were collected during three periods (2000–2005, 2006–2010, 2011–2015) at 158 s ...
... This study evaluated efficacy and toxicity of the pyrazinoisoquinoline anthelmintic praziquantel (PZQ) in barbel infected with metacercariae of Diplostomum spathaceum and adult Pomphorhynchus laevis, and assessed antioxidant biomarkers and the lipid peroxidation response in juvenile barbel post‐treatment. The estimated 96‐hr LC50 of PZQ was 28.6 mg/L. For evaluation of efficacy, barbel naturally i ...
Barbus barbus; Leuciscus leuciscus; Phoxinus phoxinus; Squalius cephalus; benthic organisms; body length; diet; feeding methods; fish; fish communities; food webs; foraging; introduced species; juveniles; rivers; stomach; England
Abstract:
... Quantifying feeding interactions between nonindigenous and indigenous fishes in invaded fish communities is important for determining how introduced species integrate into native food webs. Here, the trophic interactions of invasive 0+ European barbel Barbus barbus (L.) and the three other principal 0+ fishes in the community, Squalius cephalus (L.), Leuciscus leuciscus (L.) and Phoxinus phoxinus ...
... Throughout their lives, fish accomplish frequent movements between functional habitats that are often triggered by environmental signals. We aimed to determine if rheophilic cyprinids (barbel, Barbus barbus and chub Squalius cephalus), living in different places of the same river basin, may develop similar movement periodicities and react identically to environmental cues to carry out their spawni ...
... Ecological applications of stable isotope data require knowledge on the isotopic turnover rate of tissues, usually described as the isotopic half-life in days (T ₀.₅) or the change in mass (G ₀.₅). Ecological studies increasingly analyse tissues collected non-destructively, such as fish fin and scales, but there is limited knowledge on their turnover rates. Determining turnover rates in situ is ch ...
... Benthic foraging by fish can modify the nature and rates of fine sediment accrual and the structure and topography of coarse-grained fluvial substrates, with the potential to alter bed material characteristics, particle entrainment thresholds, and bedload transport fluxes. However, knowledge of what controls the nature, extent, and intensity of benthic foraging and the consequent influence of thes ...
... Comparative functional responses (FRs) can predict impacts of invasive species, including piscivorous fishes, via quantifying their depletion of native food resources as a function of prey density. The utility of FRs for predicting impacts on prey populations by invasive fishes of different trophic guilds was tested here by comparing the FRs of the invaders Cyprinus carpio and Carassius auratus, w ...
... Fine sediments can impact river biota, with egg and larval stages of lithophilic fish particularly sensitive to deposition of sand- to clay-sized particles (‘fines’) in spawning gravels. Mitigation and restoration methods include jetting to cleanse gravels of fines. Despite wide application, impacts of jetting on gravel composition and quality have rarely been quantified. Here, gravel jetting impa ...
Barbus barbus; Barbus meridionalis; ecological invasion; fish; habitats; host-parasite relationships; hosts; hybrids; indigenous species; introgression; microsatellite repeats; parasites; parasitism; risk; rivers; species diversity; species identification; watersheds; France
Abstract:
... BACKGROUND: Recently, human intervention enabled the introduction of Barbus barbus from the Rhône River basin into the Barbus meridionalis habitats of the Argens River. After an introduction event, parasite loss and lower infection can be expected in non-native hosts in contrast to native species. Still, native species might be endangered by hybridization with the incomer and the introduction of n ...
... The schizothoracine fishes, members of the Teleost order Cypriniformes, are one of the most diverse group of cyprinids in the Qinghai–Tibetan Plateau and surrounding regions. However, taxonomy and phylogeny of these species remain unclear. In this study, we determined the complete mitochondrial genome of Schizopygopsis malacanthus. We also used the newly obtained sequence, together with 31 publish ...
... The crossing of freshwater ecosystem boundaries by marine‐derived nutrients (MDN) is usually associated with migratory salmonid fishes returning to natal rivers. An alternative source of MDN in fresh waters is the widespread use of pelletised marine fishmeal (“pellets”) by freshwater anglers as they target large‐bodied cyprinid fishes, such as European barbel Barbus barbus. Here, the trophic conse ...
... BACKGROUND: Stable isotope analysis of carbon and nitrogen can deliver insights into trophic interactions between organisms. While many studies on free-living organisms are available, the number of those focusing on trophic interactions between hosts and their associated parasites still remains scarce. In some cases information about taxa (e.g. acanthocephalans) is completely missing. Additionally ...
... Invasive species and anthropogenic sources of allochthonous trophic subsidies can have substantial ecological consequences for freshwater ecosystems, including modifying the diet of consumers and altering food web structure. Here, the diet of an omnivorous cyprinid fish, European barbel Barbus barbus, was assessed in relation to the presence of invasive signal crayfish Pacifastacus leniusculus and ...
... River sediments are a major source of metal contamination in aquatic food webs. Due to the ability of metals to move up the food chain, fishes, occupying higher trophic levels, are considered to be good environmental indicators of metal pollution. The aim of this study was to analyze the metal content in tissues of the common barbel (Barbus barbus), a rheophilous cyprinid fish widely distributed i ...
Bacillariophyta; Barbus barbus; Chondrostoma nasus; Squalius cephalus; community structure; digestive system; fish; linear models; river water; rivers; water quality
Abstract:
... The sampling skills of three common European fish species (Barbus barbus, Chondrostoma nasus and Squalius cephalus) were tested to assess their potential as biomonitors of past changes in river water quality through the analysis of diatoms in fish guts. The study was performed on three rivers with different chemical and physical conditions. Comparison of similarity indices revealed low diatom asse ...
Barbus barbus; Chondrostoma nasus; bedload; case studies; ecological restoration; ecosystems; fauna; fish; fish communities; gravel; habitats; hydraulic structures; hydrodynamics; islands; rheophilic species; riparian areas; rivers; spawning; species diversity; valleys; Austria; Danube River
Abstract:
... Concerning the Austrian Danube River, hydromorphological pressures are the main shortfalls which prohibit achieving an ecological status as prescribed by the EU Water Framework Directive. The relevant biological quality element for evaluating this type of alteration is the fish fauna. Its generally low stocks – especially of rheophilic, type-specific species like nase (Chondrostoma nasus) and barb ...
... BACKGROUND: A large number of studies demonstrated that acanthocephalans exhibit a high metal accumulation potential and thus can be used as sensitive accumulation indicators. However, similar to free-living bioindicators, a seasonal variation in metal concentrations in parasites might occur. Accordingly, the influence of seasonality has to be elucidated if parasites should be applied as sentinels ...
Acipenser ruthenus; Barbus barbus; fish; fisheries; gills; histopathology; liver; monitoring; muscles; pollutants; rivers; scientists; sediments; statistical analysis; water currents; water management; Danube River
Abstract:
... The bottom feeding fish species have a good potential to be used for assessments of pollution, as they are under pressure from pollutants from both water and sediments. In this study, the level of similarity of histopathological responses to pollution in gills and liver between barbel (Barbus barbus) and sterlet (Acipenser ruthenus) from the Danube River was assessed, and compared with elemental c ...
Barbus barbus; Squalius cephalus; diet; fish; fish communities; linear models; rivers; stable isotopes; stomach; surveys; trophic relationships; England
Abstract:
... The utility of using fish scales collected during stock assessment exercises to assess the trophic relationships of riverine fishes using their stable isotopes of d¹³C and d¹⁵N was tested using three riverine fish communities in England (Rivers Great Ouse, Ivel and Goyt). In each river, European barbel Barbus barbus was an important species, with other cyprinid species, including chub Squalius cep ...
... Epizootic ulcerative syndrome (EUS) is a fish disease caused by an infection of the oomycete, Aphanomyces invadans. During a fish biodiversity assessment of Lake Liambezi, Zambezi Region, Namibia, in August 2011, two Barbus haasianus and three Barbus unitaeniatus with circular ulcerative skin lesions were collected. Lake Liambezi receives inflow from the Zambezi, Chobe and Linyanti rivers. The pre ...
... Genetic surveys of the endemic Padanian barbel Barbus plebejus (Osteichthyes: Cyprinidae) were completed on the lowland Adda River, a heavily regulated Italian Alpine river in which the European Barbus barbus is invasive. Both Barbus species are of the large fluvio-lacustrine ecophenotype and thus they share habitats in the river. Mitochondrial (N = 35) and nuclear (N = 256) DNA sequences were com ...
... BACKGROUND: Metal uptake and accumulation in fish parasites largely depends on the parasite group with acanthocephalans showing the highest accumulation rates. Additionally, developmental stage (larvae or adult) as well as parasite location in the host are suggested to be decisive factors for metal bioconcentration in parasites. By using barbel (Barbus barbus) simultaneously infected with nematode ...
Barbus barbus; Chondrostoma nasus; Lepomis gibbosus; environmental indicators; fish; indicator species; industrial effluents; invasive species; population growth; population size; rheophilic species; river water; sewage treatment; species diversity; urbanization; water quality; Germany; Rhine River
Abstract:
... BACKGROUND: The Rhine-Neckar region is one of the most urbanised areas along the Rhine River and the world's largest industrial site, BASF SE, is located here at Ludwigshafen am Rhein. When the water quality dropped to its lowest values in the 1970s, BASF SE implemented a sewage treatment plant at its production site. In addition, electrofishing at this site has been carried out at regular interva ...
... The experiment tested three formulated dry diets at 25°C to determine their effects on larval Barbus barbus (L.) body mineral composition, growth, and survival. Live Artemia nauplii were fed to all the larvae for the first 5 days of the experiment. From day 6 to day 25 inclusive, nauplii were the reference diet in one group, whereas the three other groups were fed dry diets exclusively. On D1 the ...
... The Odra River, 55.2 kmof its length, is winding through the Poodří Protected Landscape Area, which has total area of 81,5 km<sup>2</sup>. More than 80% of its stream has retained the natural character of its riverbed and the hydrological regime with regular floods. Ichthyologic research was carried out in the period 1997–2001. It took place in 7 localities comprising 3 lo ...
... The rheophilic European barbel Barbus barbus is an aggregative fish typically encountered in the middle reaches of European rivers that range from southeastern England and France in the west to the Black Sea basin in the east. An important angler-target species and indicator of anthropogenic disturbance, they are vagile, moving considerable distances for activities such as spawning when movements ...
... Fish stocking can result in increased resource competition for coexisting species in receiving fisheries, with potential implications for the subsequent growth of individuals. The effects of increased exploitative competition for limited food resources were tested on the somatic growth of European barbel Barbus barbus (Linnaeus 1758). A substitutive–additive design was used, utilising common carp ...
Acipenser ruthenus; Barbus barbus; Bivalvia; Chironomidae; Gammarus; Polychaeta; Trichoptera; body length; fish; food composition; group size; insect larvae; pupae; summer; Danube River
Abstract:
... The aim of the study was to describe the feeding habits of sterlet, Acipenser ruthenus L., in the mid section of the Danube (km 1676-1694). The fish were caught in the summers of 1991 and 1992. The food composition of 85 sterlets (mean body length BL = 37.1 cm; body weightW= 540 g) was analyzed. Most of the fish analyzed (98.8%) had full digestive tracts. Sterlet is considered to be a typical bent ...