| the biological cycle of caryophyllaeus brachycollis janiszweska, 1953 (cestoda carophyllaeidae) a parasite of barbus meridionalis risso, 1826 in the south of france. | caryophyllaeus brachycollis janiszweska, 1953 has been found for the first time in france in barbus meridionalis risso, 1926. experimentally, the procercoid develops in tubifex sp. and never in limnodrilus sp. the different possibilities of life cycle of c. brachycollis in europe have been compared. | 1975 | 7113 |
| autosomal differences between males and females in hybrid zones: a first report from barbus barbus and barbus meridionalis (cyprinidae). | narrow hybrid zones are generally subjected to the action of two forces: dispersal, which tends to homogenise the hybridising taxa, and selection against hybrids, which, in contrast, produces steep clines of introgression for diagnostic markers. although differences between sexes in dispersal abilities or in susceptibility to hybrid counterselection are common in hybrid zones, autosomal genetic differences between males and females have never been reported to our knowledge. barbus barbus and bar ... | 2004 | 15273701 |
| morphological and biometric revision of the cleithra, opercular and pharyngeal bones of iberian teleosts belonging to the genus barbus (pisces, cyprinidae). | species of the genus barbus present in the iberian peninsula are an interesting study group, due to its diversity and complex taxonomic position. in this work, 299 specimens of eight species were studied. all of them are endemic to the iberian peninsula, except for barbus meridionalis. cleithra, opercular and pharyngeal bones were extracted from each specimen. these bones were morphologically compared and measured, obtaining biometric indices. from these indices, the biometric differences of eac ... | 2003 | 16229160 |
| comparing the response of biochemical indicators (biomarkers) and biological indices to diagnose the ecological impact of an oil spillage in a mediterranean river (ne catalunya, spain). | three biomarkers of hydrocarbon exposure, liver 7-ethoxyresourfin-o-deethylase activity (erod), fluorescent hydrocarbon compounds (facs) in bilis, and the liver antioxidant enzyme catalase (cat) were examined in the autochthonous fish species barbus meridionalis collected in the river fluvià (ne catalunya, spain) after an oil spillage. four different locations were sampled, including the impacted site, upstream and downstream sites and a reference site. biomarker responses were compared with dia ... | 2007 | 16959291 |
| 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 |
| ruffed cells in the olfactory bulb of freshwater teleosts. i. golgi impregnation. | the olfactory bulbs of barbus meridionalis, carassius carassius, chondrostoma polylepis, cyprinus carpio, tinca tinca and salmo gairdneri were examined by two variants of the golgi technique. we report, for the first time, the existence of ruffed cells in these species. this neuronal type shows a characteristic morphology and location. overall, these cells exhibit a generalised pattern, although there are qualitative and quantitative variations between the various species studied. | 2012 | 3503042 |
| cell proliferation in the olfactory bulb of adult freshwater teleosts. | the olfactory bulb of adult specimens of carassius auratus was subjected to an autoradiographic study using [3h]thymidine. adult specimens of carassius auratus, barbus meridionalis, cyprinus carpio and salmo gairdneri were also studied using light and electron microscopy. cells were found undergoing mitotic division with two characteristic locations: a group can be seen near to the ventricle or ventricular recess; these cells can be identified as granule cells or precursors of granule cells. oth ... | 2008 | 2606770 |
| egg-laying and hatching rhythms in the monogenean diplozoon homoion gracile from the southern barbel (barbus meridionalis). | diplozoon homoion gracile from the southern barbel (barbus meridionalis) displays an egg-laying and an egg hatching rhythm, the latter being more clearly defined. egg laying continues both day and night but significantly more eggs are laid at night. the oncomiracidia hatch at dusk. if parasite eggs are eaten by the host they pass through the gut undamaged and hatch normally. | 1978 | 659823 |
| morphology of philometroides barbi (nematoda: philometridae), a rare tissue parasite of the mediterranean barbel barbus meridionalis (osteichthyes). | a female specimen of the nematode philometroides barbi moravec, simková, hanzelová, spakulová et cakić, 2005, a little-known histozoic parasite of the mediterranean barbus meridionalis, was recorded from the fin of its fish host in bulgaria. scanning electron microscopical examination, used for the first time in this species, made it possible to determine the character of cephalic papillae (14 papillae arranged in 2 circles) and amphids and confirmed the presence of 4 large caudal lobes. these f ... | 2006 | 16724572 |
| permanent genetic resources added to molecular ecology resources database 1 april 2013-31 may 2013. | this article documents the addition of 234 microsatellite marker loci to the molecular ecology resources database. loci were developed for the following species: acipenser sinensis, aleochara bilineata, aleochara bipustulata, barbus meridionalis, colossoma macropomum, delia radicum, drosophila nigrosparsa, fontainea picrosperma, helianthemum cinereum, liomys pictus, megabalanus azoricus, pelteobagrus vachelli, pleuragramma antarcticum, podarcis hispanica type 1a, sardinella brasiliensis and scle ... | 2013 | 23937578 |
| metazoan parasite communities: support for the biological invasion of barbus barbus and its hybridization with the endemic barbus meridionalis. | 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 novel parasite species. in our study, we aimed to examine metazoan parasite communities in barbus spp. population ... | 2016 | 27855708 |
| top predator absence enhances leaf breakdown in an intermittent stream. | current biodiversity loss is characterized by the extinction of top predators, but small-bodied freshwater fish are often overlooked in research and conservation management even when threatened because they usually lack commercial value. therefore, the ecosystem impacts of their possible loss remain mostly unknown. we assessed whether the presence/absence of an endangered predatory fish (barbus meridionalis (a. risso, 1827)) in an intermittent stream affects leaf fungal biomass and leaf quality ... | 2016 | 27522291 |
| a trait-based approach reveals the feeding selectivity of a small endangered mediterranean fish. | functional traits are growing in popularity in modern ecology, but feeding studies remain primarily rooted in a taxonomic-based perspective. however, consumers do not have any reason to select their prey using a taxonomic criterion, and prey assemblages are variable in space and time, which makes taxon-based studies assemblage-specific. to illustrate the benefits of the trait-based approach to assessing food choice, we studied the feeding ecology of the endangered freshwater fish barbus meridion ... | 2016 | 27252834 |
| an in vitro screening with emerging contaminants reveals inhibition of carboxylesterase activity in aquatic organisms. | pharmaceuticals and personal care products (ppcps) form part of the new generation of pollutants present in many freshwater and marine ecosystems. although environmental concentrations of these bioactive substances are low, they cause sublethal effects (e.g., enzyme inhibition) in non-target organisms. however, little is known on metabolism of ppcps by non-mammal species. herein, an in vitro enzyme trial was performed to explore sensitivity of carboxylesterase (ce) activity of aquatic organisms ... | 2015 | 26562051 |
| small but powerful: top predator local extinction affects ecosystem structure and function in an intermittent stream. | top predator loss is a major global problem, with a current trend in biodiversity loss towards high trophic levels that modifies most ecosystems worldwide. most research in this area is focused on large-bodied predators, despite the high extinction risk of small-bodied freshwater fish that often act as apex consumers. consequently, it remains unknown if intermittent streams are affected by the consequences of top-predators' extirpations. the aim of our research was to determine how this global p ... | 2015 | 25714337 |
| metal concentrations and pathological responses of wild native fish exposed to sewage discharge in a mediterranean river. | the requirements of the water framework directive suggest the need for further research to test and develop sensitive tools that will allow freshwater managers to detect impacts on fish communities. diagnostic refinement often encompasses the use of lethal diagnostic tools that are incompatible with the conservation of native ichthyofauna. here we determine the metal concentration and the pathological response of squalius laietanus exposed to sewage discharges in the ripoll river (north-eastern ... | 2013 | 23403098 |
| metal bioaccumulation in the mediterranean barbel (barbus meridionalis) in a mediterranean river receiving effluents from urban and industrial wastewater treatment plants. | although sewage treatment plants (stps) play a crucial role in maintaining the water quality and flow of mediterranean rivers, particularly during drought periods, few studies have addressed their impact on aquatic fauna. here we analyzed the role of stps as a source of metals in the ripoll river, a heavily urbanized and industrialized watercourse with a long history of anthropogenic disturbance. for this purpose, we measured iron, mercury, cadmium, zinc, lead, nickel and copper accumulation in ... | 2012 | 21993348 |
| changes in non-specific biomarkers in the mediterranean barbel (barbus meridionalis) exposed to sewage effluents in a mediterranean stream (catalonia, ne spain). | the effluents from sewage treatment plants strongly influence the water quality and flow of mediterranean streams. these effluents play a crucial role in maintaining the aquatic communities of these ecosystems, particularly in the absence of natural flow resulting from climate constraints or intensive water use. to detect the ecological effects of these effluents, we used non-lethal biomarkers in barbus meridionalis and traditional assessment protocols in the ripoll river (ne of spain). our resu ... | 2010 | 20810176 |
| haplotype diversity and phylogenetic relationships among the iberian barbels (barbus, cyprinidae) reveal two evolutionary lineages. | the phylogenetic relationships and haplotype diversity of all iberian barbels were examined by analyzing the complete mitochondrial cytochrome b gene sequence (1141 bp) of 72 specimens from 59 iberian localities. phylogenetic findings demonstrated a clear distinction between two mitochondrial lineages and confirmed the existence of two previously considered subgenera: barbus and luciobarbus: the first subgenus, barbus, is represented on the iberian peninsula by barbus haasi and barbus meridional ... | 2010 | 12140275 |
| interspecies differences in the substance p- and vasoactive intestinal polypeptide-like immunoreactivities in the olfactory bulb of salmo gairdneri and barbus meridionalis. | the distribution of substance p-like (sp) and vasoactive intestinal polypeptide-like (vip) structures was studied using an indirect immunoperoxidase technique in the mediterranean barbel barbus meridionalis and in the rainbow trout salmo gairdneri. sp-like positive fibers were observed in the inner strata of the mediterranean barbel olfactory bulb, mainly the granule cell and the plexiform layers. ganglion cells and fibers of the terminal nerve were also labeled. no sp-positive structure was fou ... | 1990 | 1690815 |
| a quantitative study of the torus semicircularis of barbus meridionalis risso. | in the quantitative study of the torus semicircularis of the teleost barbus meridionalis risso determination was made of the total volume of the torus and of each of the nuclei comprising it: the nucleus centralis and the nucleus lateralis; also studied were the volume of the two regions that can be differentiated in the nucleus lateralis: the pars lateralis and the pars medialis. the number of neurons and neuronal density were also determined throughout the whole of the torus and in each of its ... | 1989 | 2745973 |
| tyrosine hydroxylase immunoreactivity in a subpopulation of granule cells in the olfactory bulb of teleost fish. | the distribution of tyrosine hydroxylase (th)-like immunoreactivity in the olfactory bulb was studied in three species of teleosts, the tench tinca tinca, the mediterranean barbel barbus meridionalis and the rainbow trout salmo gairdneri, by using an indirect immunoperoxidase method. the antiserum used displayed a characteristic pattern of immunostaining in the three species, and four main conclusions can be drawn: (1) there is a large population of th-like positive cell bodies and fibers in the ... | 1989 | 2575430 |
| microscopic structure of the brain of barbus meridionalis risso. i. telencephalon. | the telencephalon of barbus meridionalis is composed of two oval telencephalic lobes separated by a medial ventricle and joined exclusively by the anterior commissure. histologically, the dorsal and ventral telencephalic areas are well defined, the limiting plane between them being a cell free zone. in the ventral area it is possible to distinguish the following parts: dorsal, supracommissural, postcommissural, lateral, intermedia and the nucleus entopenduncularis. in the dorsal area there are t ... | 1987 | 3668237 |
| structural organization of the optic tectum of barbus meridionalis risso. ii. outer strata (sfgs, so and sm). | the present work deals with the histological organization of the three outer strata of the optic tectum of barbus meridionalis. as far as general features are concerned, of noteworthy interest are the absence of myelin in the sm and the ordered pattern of myelinic distribution of the so. the sfgs shows a more irregular appearance than the sm and so. it was only possible to observe with clarity several neuronal types in the so and sfgs, whereas in the sm no clear neuronal types could be seen. the ... | 1986 | 2423583 |
| structural organization of the optic tectum of barbus meridionalis risso. i. inner strata (spv, sac and sgc). | the histological features of the three deepest strata of the optic tectum of barbus meridionalis were studied with several staining and impregnation techniques. the boundaries between spv, sac and sgc were easily established and furthermore the myelinization pattern of the sac is described. several neuronal types were distinguished according to their dendritic and axonal features. pyriform multipolar neurons were found in the spv; in the sac, pear-shaped, horizontal and multipolar neurons; in th ... | 1986 | 2423582 |
| 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 |
| [histological research on the endocrine pancreas and the intramural nerve ganglia in the carp (barbus meridionalis petenyi heck)]. | | 1965 | 14342419 |
| [neurosecretory activity of the hypothalamic nucleus in the course of the ovarian cycle in the fish (barbus meridionalis petenyi heck)]. | | 1964 | 14186479 |
| [cytological characteristics of the neurosecretory activity of the parasympathetic ganglionic cells of the pancreas in barbus meridionalis petenyi heck]. | | 1963 | 13935909 |