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... ATG12, a core autophagy protein, forms a conjugate with ATG5 to promote the formation of autophagosome membrane, and plays an important role in antiviral immunity. However, little is known about the function of ATG12 in fish. Here, we cloned the open reading frame (ORF) of large yellow croaker (Larimichthys crocea) ATG12 (LcATG12), which is 354 nucleotides long and encodes a protein of 117 amino a ...
... The bioaccumulation and elimination capacity of chromium were examined in four freshwater species: the submersed aquatic plant Ceratophyllum demersum (Ceratophyllaceae), the oligochaete Limnodrilus udekemianus (Tubificidae), the crab Zilchiopsis collastinensis (Decapoda), and the fish Cnesterodon decemmaculatus (Poeciliidae). All of the species were exposed simultaneously to sediments spiked with ...
... An experimental model was designed to study the acute lesions caused by a continuous exposure to 2,4-dichlorophenoxyacetic acid (2,4-D) disolved in water (400 mg/L) in hematopoietic kidney tissue in tench (Tinca tinca L). Fifty fish were used in this study, 15 for calculating LC₅₀ and 35 were euthanized 1, 2, 5, 8, and 12 days postpoisoning (five treated and two controls each time). Tissue samples ...
... Early life stages of fishes have been shown to be especially susceptible to the toxic effects of heavy metal pollution. In this study, fathead minnow (Pimephales promelas) embryos were exposed in the laboratory to a graded series of aqueous methyl mercury concentrations under continuous-flow conditions. A number of toxicological endpoints were examined including; acute toxicity, bioaccumulation, p ...
... Semi-static acute toxicity tests were conducted on adult roach, Rutilus rutilus, to estimate its sensitivity toward an equitoxic binary mixture (EBM) of copper and nickel. The sum of their individual LC50 values was considered to equal 100 %. The main endpoints of the study were mortality and behavioral responses: detection, locomotor activity, coughing rate and pectoral-fin activity. The 96-h LC5 ...
sediments; risk; temperature; rubber; acute toxicity; acute exposure; zinc; tires; chemical analysis; environmental factors; fish; aniline; Pimephales promelas; mass spectrometry; leachates; liquid chromatography; Daphnia magna
Abstract:
... Previous studies have indicated that tire tread particles are toxic to aquatic species, but few studies have evaluated the toxicity of such particles using sediment, the likely reservoir of tire wear particles in the environment. In this study, the acute toxicity of tire and road wear particles (TRWP) was assessed in Pseudokirchneriella subcapita, Daphnia magna, and Pimephales promelas using a sed ...
quantitative polymerase chain reaction; polypeptides; messenger RNA; translation (genetics); liver; copper; Cyprinidae; heavy metals; DNA; exposure duration; open reading frames; cadmium; Western blotting; amino acid sequences; amino acids; gene expression; fish; heat-shock protein 70; introns
Abstract:
... A full sequence of TaHSP70 (heat shock protein 70 of Tanichthys albonubes) was amplified which was 2398bp, including an open reading frame (ORF) of 1392bp encoding a polypeptide of 643 amino acids with all three HSP70 family signatures and cytosolic motif of EEVD. Genomic DNA structure analysis revealed that the TaHSP70 gene contained one intron in 5′UTR. BLAST analysis revealed that the TaHSP70 g ...
... This study evaluates the toxic effects of the organophosphate pesticide (OP) dichlorvos to the endangered Iberian toothcarp (Aphanius iberus). To this end, the lethal toxicity of dichlorvos based on 96h-LC50 bioassays was determined in saline water (50g/L), and in vivo effects of dichlorvos on cholinesterase (ChE) activity were investigated in adult female and male specimens. The 96h-LC50 value de ...
... Studying species flocks (e.g. Darwin's finches, Caribbean anoline lizards, East African cichlid fishes) has proven to be highly successful in understanding the forces driving speciation. The only known, intact species flock of cyprinid fishes, the 15 Labeobarbus species in Lake Tana (Ethiopia), includes eight piscivorous species. Piscivory is a rare specialisation among the highly successful (>200 ...
Cyprinidae; Oreochromis aureus; age structure; air temperature; extinction; females; fish; habitat destruction; habitats; invasive species; life history; longevity; males; spawning; Jordan
Abstract:
... Information on the life‐history traits of threatened fishes can inform their conservation as they can indicate resilience to environmental change and vulnerability to extirpation and extinction. Garra ghorensis, a small (< 140 mm total length) riverine cyprinid fish, endemic to the southern Dead Sea area, is critically endangered through habitat loss and invasive species. There are, however, no da ...
Cyprinidae; age structure; females; fish; males; otoliths; rivers; sexual maturity; sport fishing; South Africa
Abstract:
... Age structure, growth and size at sexual maturity of smallmouth yellowfish, Labeobarbus aeneus (Burchell), were assessed in 2008–2009. Despite its angling and food importance, little has been published on many aspects of its ecology and biology, specifically its age structure in the Vaal River system. Of 193 L. aeneus collected by gillnetting, 96 were assessed for sexual maturity, and ages were es ...
Squalius; age structure; diet; fish; foraging; habitats; macroinvertebrates; predator-prey relationships; principal component analysis
Abstract:
... Multivariate prey trait analysis is a functional approach to understand predator-prey relationships. Here, seven macroinvertebrate ecological traits have been used for the analysis of trophic ecology of co-occurring age classes of Northern Iberian chub Squalius carolitertii, a cyprinid fish species. The present study identified several key factors in the handling efficiency and habitat utilization ...
... Blood is an indicator of physiological condition of an animal. Therefore, a field study was conducted to investigate the hematological parameters of wild population of rohu, Labeo rohita (Ham). The following aspects were evaluated in blood: hemoglobin content, red blood cell (RBC) and white blood cell (WBC) count, packed cell volume (PCV), and mean corpuscular volume (MCV) and mean corpuscular hem ...
... Tropical regions are expected to be some of the most affected by rising sea surface temperatures (SSTs) because seasonal temperature variations are minimal. As temperatures rise, less oxygen dissolves in water, but metabolic requirements of fish and thus, the demand for effective oxygen uptake, increase. Gill remodelling is an acclimation strategy well documented in freshwater cyprinids experienci ...
... An experiment was conducted to study the effects of short-term exposure to sublethal levels of nitrite on electrolyte regulation, antioxidative enzymes and haematological parameters in Labeo rohita juveniles. The fishes were exposed to graded levels of nitrite (0–15 mg l−1) for different duration (0, 12, 24, 48 and 96 h). The 96-h LC50 value for L. rohita (avg. wt, 66.5 ± 0.5 g) was found to be 11 ...
DNA; DNA damage; Danio rerio; acute toxicity; arsenic; biomarkers; chemical analysis; ecosystems; erythrocytes; fish; gel electrophoresis; genotype; habitats; heavy metals; lead; nickel; pollution; risk assessment; sediments; streams; toxicity testing; zinc
Abstract:
... This study was performed to determine the ecosystem health of an urban stream using DNA damage biomarkers of sentinel fish species along with chemical analyses of water and sediments in the impacted and reference zones. The results based on single-cell gel electrophoresis showed that the extent of DNA damage was significantly elevated in the polluted zone. The severity of DNA damage in the impacte ...
... In the present study, the testis histology, gonadosomatic index (GSI), germ cell proliferation and apoptosis, and the plasma 11-ketotestosterone (11-KT) and testosterone (T) levels of male Chalcalburnus tarichi were analyzed. According to the histological examinations of the specimens that were caught between February 2009 and January 2010, three testicular stages were determined. Those stages wer ...
... Recent evidence that freshwater fishes diversify faster than marine fishes signifies that the evolutionary history of biodiversity in freshwater system is of particular interest. Here, the evolutionary diversification events of African Cyprinidae, a freshwater fish family with wide geographic distribution, were reconstructed and analysed. The overall diversification rate of African Cyprinidae is 0 ...
... A previous population genetics study of Opisthorchis viverrini from a locality in an endemic area in Thailand found little genetic variation over time and second intermediate fish host species. Since a similar comparative analysis is not available for Lao PDR, we conducted a study of O. viverrini from different endemic foci in Vientiane Province, Lao PDR, based on spatial, temporal and fish host s ...
absorption; digestion; digestive system diseases; disease control; feeds; fish; foods; histology; light microscopes; lysosomes; markets; microvilli; mitochondria; mucus; transmission electron microscopes; vacuoles; China
Abstract:
... With 3 figures and 1 table SUMMARY: Topmouth culter (Culter alburnus), a freshwater carnivorous fish of the Cyprinidae, is one of the most popular fish species in aquatic market in China. The anatomy and histology features of fish intestine are very useful for understanding digestive physiology, diagnosing some intestinal diseases and formulating suitable feeds. Thus, here we first characterize to ...
... The effectiveness of antifreeze proteins as cryoprotectants for cryopreservation of genital materials has been always controversial in the literature. In the present study, we evaluated the effect of antifreeze proteins in cryopreservation of sperm in four fish species (66.6% Acipenseridae, 11.1% Cyprinidae, and 22.2% Sparidae). PubMed, Scopus, Web of Science, and Google Scholar search engines wer ...
... Infectious pancreatic necrosis virus (IPNV), a fish birnavirus, can establish a persistent infection on epithelioma papulosum cyprinid (EPC) cells producing a carrier state where a small fraction of IPNV-infected cells is maintained in the culture after continuous subculture. The EPCIPNV cells are resistant to challenge with IPNV as well as to challenge with viral hemorrhagic septicemia virus (VHS ...
Cyprinidae; data collection; fish; watersheds; Italy
Abstract:
... Stock-density indices are standardized methods for analyzing length-frequency data that quantify the length structure of a fish population into length categories that are of interest to recreational anglers. We adapted North American relative stock density (RSD) and proportional stock density (PSD) indices to four Italian endemic or native cyprinid species by means of two methods. In accordance wi ...
... Parasites potentially have important roles in aquatic ecosystems, although relatively little is known about their contributions to the complexity of food web structure. In this study, stable carbon and nitrogen isotope analyses (δ¹³C and δ¹⁵N) were applied for fish host–parasite systems in a shallow swamp–lake ecosystem to assess the validity of stable isotope technics to reveal the parasite-media ...
Rutilus rutilus; acidification; anthropogenic activities; biogeography; ecosystems; fish; humans; issues and policy; lakes; models; pH; surface water; water quality; Europe
Abstract:
... Quantifying the effects of human activity on the natural environment is dependent on credible estimates of reference conditions to define the state of the environment before the onset of adverse human impacts. In Europe, emission controls that aimed at restoring ecological status were based on hindcasts from process‐based models or paleolimnological reconstructions. For instance, 1860 is used in E ...
Cyprinidae; breeding season; digestive system; fish; food consumption; frequency distribution; habitats; indigenous species; rivers; semiarid zones; spawning; Great Plains region; North America
Abstract:
... Pelagic broadcast spawning cyprinids are a mobile group of fishes commonly found within semi-arid areas of the Great Plains of North America. In several species, upstream movements of 50 to 200 km have been reported and associated with reproductive migration. Long distance migrations also are associated with finding food and refuge. Goals of this study were to detect synchronous movement of Prairi ...
... The concentrations of four heavy metals (Pb, Cd, Ni and Cr) were measured in tissues of pelagic (Rutilus caspicus) and benthic (Neogobius gorlap) fishes from the Miankaleh international wetland. The maximum concentrations of Pb, Cd, Ni, and Cr (2.06, 1.20, 1.14 and 0.70 μg g⁻¹, respectively) were measured in the liver of N. gorlap, while the lowest concentrations were measured in muscle tissue col ...
... The ability of whole effluent toxicity (WET) tests to predict in-stream effects to periphyton, benthic macroinvertebrates, and fish in a habitat-impaired stream was assessed. Habitat assessment data were useful in interpreting in-stream conditions for periphyton and benthic macroinvertebrates. Various periphyton and macroinvertebrate metrics identified siltation effects as opposed to water quality ...
... This study was performed to investigate certain major and toxic metal concentrations in muscle, gill and liver tissues of two Cyprinid species (Leuciscus cephalus, Tinca tinca). Generally liver and gill tissue exhibited higher metal concentrations than did muscle. The highest metal concentrations found in tench and chub muscle tissues were determined to be Al (59.01–108 mg kg−1), Zn (45.23–57.81 m ...
Lates niloticus; Oreochromis niloticus; beaches; fish; humans; pollution; polycyclic aromatic hydrocarbons; Kenya; Lake Victoria
Abstract:
... The concentrations of polycyclic aromatic hydrocarbons (PAHs) in Lates niloticus, Oreochromis niloticus and Rastrineobola argentea from three beaches were assessed to establish whether they are sources of human exposure in Kisumu Bay, Winam Gulf, Lake Victoria, Kenya. O. niloticus had 12 PAHs detected (TPAH 3.93 μg/kg); L. niloticus had 11 (TPAH 3.17 μg/kg). In both cases, the highest and lowest c ...
... The assessment of general condition of fish in the moderately contaminated aquatic environment was performed on the European chub (Squalius cephalus) caught in September 2009 in the Sutla River in Croatia. Although increases of the contaminants in this river (trace and macro elements, bacteria), as well as physico-chemical changes (decreased oxygen saturation, increased conductivity), were still w ...
Cyprinidae; Ephemeroptera; Trichoptera; anthropogenic stressors; biological assessment; data collection; eggs; environmental factors; environmental health; environmental quality; fish; habitats; land use; macroinvertebrates; omnivores; rivers; streams; watersheds; China
Abstract:
... Recently, the concurrent use of multiple taxonomic groups in stream bioassessment is becoming increasingly common because the responses of each group to anthropogenic stressors may be different. In this study, a multimetric index based on fish and macroinvertebrate assemblages for the Huntai River basin (MMIHT) was developed using a dataset covering 54 sampling sites in order to assess ecosystem h ...
... Engraulicypris sardella (Günter, 1868) is a cyprinid fish exploited in the waters of Lake Nyasa that has been found to be infested by Ligula intestinalis (Linnaeus, 1758). Although L. intestinalis has been the subject of a number of studies, there is no information on the effects of this parasite on E. sardella . This study was therefore aimed at assessing the prevalence and intensity of the paras ...
... Autophagy and apoptosis are two key cell fate determination pathways, which play vital roles in the interaction between viruses and host cells. Previous research had confirmed that one strain of fish rhabdoviruses, Siniperca chuatsi rhabdovirus (SCRV), could induce apoptosis and autophagy after infection. In the current study, we continued to analyze the interaction of autophagy and apoptosis in S ...
... Autophagy and apoptosis play important roles in the occurrence and development of diseases. Largemouth bass virus (LMBV) is a primary agent that causes infectious skin ulcerative syndrome in largemouth bass and threatens the aquaculture of the species. We investigated the relationship between LMBV and autophagy, as well as the effect of autophagy on apoptosis induced by LMBV. Results showed that L ...
... Apoptosis inhibition has been reported in the male reproductive tract of teleost fish exposed to 17β-estrogen or estrogen-like compounds. In order to understand the molecular mechanisms of cell death inhibition, this study examined 2 genes involved in the apoptotic pathway, Bcl-2 and Caspase 3, an anti-apoptotic and a pro-apoptotic genes, respectively. Partial cDNA sequences of Bcl-2 and Caspase 3 ...
... Native Eurasian otter (Lutra lutra) and introduced American mink (Mustela vison) carcasses collected throughout Ireland were screened for biliary parasites. Secondary intermediate hosts, Cyprinid fish, were also examined for Opistorchiid metacercariae. Twenty-nine mink and 24 otter gall bladders were screened for biliary parasites. A single mink and three otters were found to be infected with the ...
... Since toxicity is based on the effect that a toxicant produces at a target site within an organism, establishing the relationship between the concentration of substance at the target site and the subsequent toxic effect can provide a tool for predicting toxicity. This article aims to investigate the patterns of bioaccumulation and elimination of nickel in the selected organs of black fish (Capoeta ...
... There are limited data on trace metals in the fishes of the Tibetan Plateau. In this study, 62 fish samples were collected from six alpine lakes and a river to investigate the levels and spatial variations of trace metals across the Tibetan Plateau. The concentrations of nine trace elements in fish samples were measured using an inductively coupled plasma mass spectrometer after microwave digestio ...
Diana M. Míguez; Raquel Huertas; María V. Carrara; Agustín Carnikián; María E. Bouvier; María J. Martínez; Karen Keel; Carolina Pioda; Elena Darré; Ramiro Pérez; Santiago Viera; Enrique Massa
... Bioassays of two sites along the Rio Negro in Uruguay indicate ecotoxicity, which could be attributable to trace concentrations of lead in river sediments. Monthly samples at two sites at Baygorria and Bonete locations were analyzed for both particle size and lead. Lead was determined by atomic spectrometry in river water and sediment and particle size by sieving and sedimentation. Data showed tha ...
... High-throughput sequencing of the 16S rRNA gene of microbial communities was used to investigate how biofloc technology (BFT) improved water quality and fish yield in freshwater pond aquaculture. Three treatments included conventional treatment (CT), biofloc treatment (BT) and biofloc systems augmented with floc-forming bacterium (Zoogloea resiniphila MMB) treatment (BZT). The feeding trial lasted ...
Snorre Gulla; Sion Bayliss; Bryndís Björnsdóttir; Inger Dalsgaard; Olga Haenen; Eva Jansson; Una McCarthy; Felix Scholz; Maaike Vercauteren; David Verner-Jeffreys; Tim Welch; Tom Wiklund; Duncan J Colquhoun
... A recently described typing system based on sequence variation in the virulence array protein (vapA) gene, encoding the A-layer surface protein array, allows unambiguous subtyping of Aeromonas salmonicida. In the present study, we compile A-layer typing results from a total of 675 A. salmonicida isolates, recovered over a 59-year period from 50 different fish species in 26 countries. Nine novel A- ...
Christian Skov; Joan H. Hansen; Henrik Baktoft; Jakob Brodersen; Christer Brönmark; Lars-Anders Hansson; Kaj Hulthén; Ben B. Chapman; P. Anders Nilsson
... Removal of cyprinid fish is a widely used biomanipulation tool to transform turbid shallow eutrophic lakes in north temperate regions into a clear water state. We here evaluate the removal of cyprinids from streams as a supplement to lake fishing. Since cyprinids often aggregate in high densities in lake inlet/outlet streams during winter migration, removal of fish in this space-confined habitat m ...
... In this study, the chronic effect of the insecticides carbofuran and deltamethrin on acetylcholinesterase (AChE) activity and malondialdehyde (MDA) and reduced glutathione (GSH) levels were examined in the brain of tench. Both pesticides were evaluated in two separate experiments, and animals were exposed in a continuous flow-system to three different concentrations of carbofuran (0, 10 and 100μg/ ...
... P450 aromatase catalyses the conversion of C19 androgens to C18 estrogens which is thought to be essential for the regulation of the reproductive function. In this study, brain aromatase activity (AA) was measured monthly over a reproductive cycle in wild roach (Rutilus rutilus) sampled in a reference site in Normandy. AA peaked during the breeding season, reaching 35fmolmg⁻¹min⁻¹ in both male and ...
water quality; community structure; monitoring; stream channels; Cyprinidae; erosion control; wildlife habitats; watersheds; fish; ecological restoration; aquatic habitat; water erosion; Southeastern United States
Abstract:
... Degradation of warmwater streams in agricultural landscapes is a pervasive problem, and reports of restoration effectiveness based on monitoring data are rare. Described is the outcome of rehabilitation of two deeply incised, unstable sand-and-gravel-bed streams. Channel networks of both watersheds were treated using standard erosion control measures, and aquatic habitats within 1-km-long reaches ...
... Fishes in the superorder Ostariophysi have excellent hearing due to the presence of a synapomorphic hearing specialization called the Weberian apparatus. This structure connects the swim bladder to the inner ear, and increases both sensitivity and upper hearing range. Although numerous experiments have tested the effects of the Weberian apparatus on hearing, few have provided potential evidence fo ...
Cyprinidae; breeding sites; ecosystems; fish; fish production; fisheries; fisheries management; fishery resources; issues and policy; lakes; livelihood; managers; planning; population growth; poverty; socioeconomics; soil erosion; stakeholders; water quality; watersheds; Malawi
Abstract:
... This paper reviews the management challenges facing Malawi lakes and analyzes the management responses that have been developed to deal with these challenges. Malawi lakes are under considerable stress due to high population growth and increasing levels of poverty which have led to overexploitation of fishery resources. High rates of soil erosion in the lake catchments are increasing siltation of ...
... Changes in the ichthyofauna assemblages of three shallow dam reservoirs located in central and eastern Poland are presented based on long-term records of commercial fish catches. As the reservoirs age the evolution in the sizes of the shares of exploited fish species is depicted by temporal trend lines described with regression functions. The species targeted by commercial fishing are assigned to ...
... Infection with the liver fluke Opisthorchis viverrini sensu lato (s.l.), a group 1 carcinogen, is the most important risk factor for developing cholangiocarcinoma (CCA) in Southeast Asia. Cholangiocarcinoma is a fatal disease with the world’s highest incidence being found in northeast Thailand. Liver fluke infection occurs through eating raw or partially cooked cyprinid fish containing metacercari ...
Cyprinidae; alleles; drainage; fish; genetic markers; genetic structure; habitat destruction; heterozygosity; loci; microsatellite repeats; overfishing; population genetics; population structure; China
Abstract:
... Highly specialized grade of Schizothoracine fishe is primarily distributed in the drainage of Qinghai‐Tibet Plateau and its surrounding region, which has precious biological resources. However, overfishing and habitat destruction have seriously affected the germplasm resources and population genetic structure of HSG, so it is a significance to search for reliable genetic markers to protect its wil ...
... Liver-expressed antimicrobial peptide-2 (LEAP-2) is a cationic antimicrobial peptide with two disulfide bonds, and it has been shown to play an important role in the host defence in fish, amphibians, birds and mammals. Here, we characterize LEAP-2 from Pelodiscus sinensis and identify its function. The deduced precursor of PsLEAP-2 was composed of 77 amino acids (aa), including a 22-aa signal pept ...
... Eighteen orange pigment bacterial strains have been recovered from the gill of naturally diseased golden mahseer (n=9), Tor putitora (Hamilton, 1822) in Uttarakhand, India. Isolated strains were characterized by morphological and biochemical characteristics and 16S rRNA gene sequence, and were found to belong to the homogenous group. All the bacterial isolates were Gram-negative, flexirubin positi ...
... Edwardsiella tarda is the causative agent of edwardsiellosis in fish. The genome sequence of a virulent strain EIB202 has been determined. According to the genome sequence, the lipopolysaccharide (LPS) synthesis cluster containing a putative O-antigen ligase gene waaL was identified. Here, the in-frame deletion mutant ΔwaaL was constructed to analyze the function of WaaL in E. tarda EIB202. The Δw ...
... Bariliine fishes are important components of the ornamental as well as subsistence fishery sectors in India. Many of the species in the genus Barilius are threatened by habitat loss and therefore need to be met with conservation initiatives. Effective conservation measures, however, require clarification of species identities and resolution of the validity of many species currently treated as syno ...
... Agouti-related protein (AgRP) is an important neuropeptide involved in the regulation of feeding in both mammals and fish. In this study, we have cloned the full-length cDNA sequence for AgRP in a cyprinid fish (Schizothorax prenanti). The AgRP gene, encoding 126-amino acids, was strongly expressed in the brain. The AgRP gene was detected in embryos at developmental stages. Further, its mRNA was d ...
chromosomes; fish; fluorescence in situ hybridization; genes; habitats; karyotyping; probability; ribosomal DNA; ribosomal RNA; sex determination
Abstract:
... Karyotypes and chromosomal features of both minor and major ribosomal RNA genes (rDNA) were investigated in nine Iberian chondrostomine species by fluorescent in situ hybridization (FISH) with 5S and 45S rDNA probes. All species presented invariably diploid values of 2n = 50 and the characteristic leuciscin karyotype pattern with 6–7 metacentric (m), 15–16 submetacentric (sm) and 3–4 subtelo- to a ...
... Ammonia-contaminated groundwater enters the Upper Colorado River from beneath the abandoned Moab Uranium Mill Tailings Pile near Moab, Utah. This reach of the Upper Colorado River was designated as critical habitat for four endangered fish species because it is one of the few existing areas with known spawning and rearing habitats. Un-ionized ammonia (NH₃) concentrations frequently exceed 1.00 mg/ ...
... Synthetic musk fragrances, which are contained in almost all scented consumer products, enter aquatic environment mainly by way of wastewater paths. To monitor contamination of the Vltava River by these relatively persistent chemicals in the surroundings of Prague industrialized agglomeration, chub (Leuciscus cephalus) was employed as a bioindicator. Validated gas chromatography-mass spectrometry ...
... Heat shock protein 90 (HSP90) is a highly conserved molecular chaperone important in the maturation of a broad spectrum of proteins. In order to evaluate the effect of copper (Cu2+) and cadmium (Cd2+) on the expression of HSP90 from Tanichthys albonubes (designated TaHSP90), the full-length complementary DNA (cDNA) of TaHSP90 was cloned using reverse transcription PCR and rapid amplification of cD ...
... Melanocortin 4 receptor (MC4R) has an important role in the regulation of energy homeostasis in both mammals and fish. In this study, MC4R was characterized in S. prenanti (Schizothorax prenanti) and designated as SpMC4R. SpMC4R cDNA is composed of 1004 nucleotides with a 978 nucleotide open reading frame encoding a protein of 326 amino acids. The SpMC4R contained predicted regions that were struc ...
... Spermatogenesis involves a series of cellular transformations and thousands of regulated genes. Previously, we showed that the triploid fish (3nBY) cannot produce mature spermatozoa. In the present study, evaluation of the testis microstructure revealed that germ cells of 3nBY could develop into round spermatids, but then degenerated, resulting in male infertility. In this study we comparatively a ...
Cyprinidae; Salmonidae; animal transport; biosecurity; disease occurrence; disease outbreaks; disease surveillance; disease transmission; fish; fish culture; industry; issues and policy; monitoring; prediction; risk; rivers; watersheds; zoning; England; Wales
Abstract:
... Disease poses a significant threat to aquaculture. While there are a number of factors contributing to pathogen transmission risk, movement of live fish is considered the most important. Understanding live fish movement patterns for different aquaculture sectors is therefore crucial to predicting disease occurrence and necessary for the development of effective, risk-based biosecurity, surveillanc ...
... Habitat use by four grazing fishes in a rainforest stream was determined by direct observation (snorkeling) and microhabitat measurements for individual fish. Significant species heterogeneity (P < 0.004) occurred along two principal component gradients of velocity, depth and substrate and most pairwise species contrasts were significant. Abundant Paracrossochilus acerus (Cyprinidae) occupied the ...
... The spontaneous locomotor behavior separated into day/night activity phases of two fish species Danio rerio and Leucaspius delineatus was recorded and quantified continuously under sublethal long-term exposure to microcystin-LR in tanks. Microcystin-LR was applied in concentrations of 0.5, 5, 15, and 50 microgram L-1. By using an automated video-monitoring and object-tracing system, the average mo ...
Cyprinidae; Salmonidae; biomass; community structure; developmental stages; fish; fish communities; fisheries management; geography; multivariate analysis; rivers; species diversity; surveys; taxonomy
Abstract:
... Studies attempting to describe fish community structure in shallow riverine environments typically rely on electrofishing and/or visual (snorkelling) surveys, but few have addressed the relative efficiencies of these two methods at estimating fish density and biomass across wide ranges of geography, taxonomy and life history stages. Multiple paired electrofishing and visual surveys were conducted ...
Cyprinidae; Misgurnus anguillicaudatus; body size; diploidy; females; fish; growth performance; habitats; longevity; males; sex ratio; tetraploidy; watersheds; China; Yangtze River
Abstract:
... Diploids and tetraploids of the cyprinid loach Misgurnus anguillicaudatus coexist in many natural habitats in Asia. However, little is known about the biological and ecological differences between these two ploidy forms. We examined age, body size and growth rates of fish in a mixed ploidy population of M. anguillicaudatus in the Yangtze River basin in China. The sex ratios of both diploid and tet ...
... 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 ...
Cichlidae; Cyprinidae; arid lands; biomass; body condition; correlation; dissolved oxygen; drought; dry season; fish; fish communities; fish health; freshwater ecosystems; land use; livelihood; nutrients; refuge habitats; rivers; water quality; Africa
Abstract:
... The ecology of dryland rivers is under-studied in Africa. During seasonal droughts, these rivers cease flowing resulting in disconnected pools that restrict the movement of aquatic species. Few studies have focussed on the conditions of these refugia or their effect on fish. We investigated the influence of pool size and water quality on the abundance and composition of fish, including body condit ...
... MicroRNAs (miRNAs) are a kind of small single-strand RNA molecules with lengths of 18–25nt, which do not encode any proteins. They play an essential role in gene expression regulation by binding to their target genes, leading to translational repression or transcript degradation. In this study, 23 miRNAs were predicted from five cyprinidae fishes by using a bioinformatics-based gene search based o ...
... Concentration of heavy metals in aquatic animals mainly occurs due to industrial contamination. In this study, the concentrations of four heavy metals (cadmium, lead, mercury, and arsenic) in organs of two cyprinid fish and in water collected from three sections of the Kor River, Iran were determined using the inductively coupled plasma method. Pathological and hormonal changes due to metal contam ...
Greenfield, Ben K.; Teh, Swee J.; Ross, John R. M.; Hunt, Jennifer; Zhang, GuoHua; Davis, Jay A.; Ichikawa, Gary; Crane, David; Hung, Silas S. O.; Deng, DongFang; Teh, Foo-Ching; Green, Peter G.
DDT (pesticide); body condition; chlordane; cytoplasmic inclusions; dieldrin; fish; gonads; health status; histopathology; human health; kidneys; lipid content; liver; metals; pollutants; polychlorinated biphenyls; rivers; trace elements; California
Abstract:
... Sacramento splittail (Pogonichthys macrolepidotus) is a species of special concern in California, due to multiple anthropogenic stressors. To better understand the potential impact of contaminant exposure, adult splittail were captured from the Sacramento-San Joaquin River Delta (California, USA) and analyzed for histopathology and contaminant exposure. Organochlorine contaminants (PCBs, DDTs, die ...
Food and Agriculture Organization; Labeo rohita; brain; chromium; copper; fish; fish farms; gills; iron; kidneys; lead; liver; manganese; muscles; nickel; pollution; rivers; skin (animal); zinc; India
Abstract:
... In the present paper, accumulation of zinc (Zn), iron (Fe), copper (Cu), chromium (Cr), nickel (Ni), manganese (Mn) and lead (Pb) was determined in different tissues (skin, muscles, liver, gills, kidney and brain) of rohu (Labeo rohita) collected from the River Ganga in Varanasi, India. Concentrations of Cu (except gills), Fe and Cr (except brain for Cr) in most of the tissues were above the permi ...
... The aim of the present study was to know the cyclic changes in gonadal maturation and to investigate the various developmental stages of oocytes and testicular germ cells of snow trout, Schizopyge niger. A total of 316 fish specimens were procured from three sites of river Jhelum during November 2016 to October 2017 and the histological analysis of their gonad was carried out. The results of the p ...
... Pseudochondrostoma duriense and Pseudochondrostoma polylepis hybridize extensively with Achondrostoma oligolepis in natural populations. In this first survey, karyotypes were comparatively analyzed by C-, AgNOR- and CMA₃-banding procedures in pure (non-introgressed) fish specimens. Leuciscinae pattern was evidenced in the three species: metacentrics and submetacentrics dominance, a big subtelo/acr ...
Dimitris Tsaparis; Ioannis Konstantinidis; Anja Palandacic; Eleni Kalogianni; Maria Th. Stoumboudi; Roberta Barbieri; Leonidas Vardakas; Nicholas Koutsikos; Costas S. Tsigenopoulos
... The freshwater ichthyofauna of Greece is characterized by high diversity and endemism and faces various conservation challenges. Despite significant efforts, mainly with traditional assessment methods, the precise taxonomic status and geographic range of some of the currently acknowledged fish species remain insufficiently explored. Here, the results of the first comprehensive DNA barcoding survey ...
Daphnia; Scenedesmus; body length; defensive behavior; egg masses; fish; foods; herbivores; life history; neonates; predation; risk
Abstract:
... Daphnia hyalina x galeata (Dhg) and D. pulicaria (Dp) are ready to pay greater costs in terms of predation risk avoidance at high rather than at low food levels. Such costs are easier to assess in Daphnia than in large long-lived and difficult-to-handle herbivores, since they can be precisely determined in a few-day experiment as the reduced growth (P=A-R) resulting from diminished assimilation (A ...
Cyprinidae; effluents; fish; fish communities; fishermen; industry; physicochemical properties; rivers; species diversity; water quality; Pakistan
Abstract:
... In a recently published study we observed that effluents from marble industry affected physicochemical characteristics of River Barandu in District Buner, Pakistan. These changes in water quality due to marble effluents may affect fish community. The present study was therefore conducted to evaluate the impacts of marble industry effluents on fish communities in River Barandu using abundance, rich ...
Cyprinidae; Eubothrium; drainage systems; fish; freshwater; lakes; new species; parasitism; British Columbia
Abstract:
... A new species of Eubothrium is described from northern squawfish from lakes in northern British Columbia. Morphologically, Eubothrium tulipai differs from other Eubothrium species in the shapes of the scolex, ovary, and cirrus sac. The new species differs from E. rugosum and E. salvelini, the two other freshwater species located in the Fraser drainage system, in the protuberant, powerful bothria, ...
... The structural details of some muscles, ligaments, aponeurotic structures, and osteological features of the pharyngeal jaw apparatus of ember parrotfish Scarus rubroviolaceus were studied. During the preparation, the evidence of the presence of a palatal organ in this species, which is convergently similar to that of benthic fish species of Cyprinidae and Catostomidae, has been found. The indirect ...
... The aim of this study was to evaluate Copper (Cu), Zinc (Zn), Selenium (Se), Chromium (Cr) and Cadmium (Cd) concentrations in liver, muscle, gills and kidney tissues of Capoeta trutta collected from four sites of Keban Dam Lake, Turkey. The highest heavy metal level in all tissues was for Zn, while Cd was the lowest. The lowest heavy metal levels were generally found at Station 4 (Agin) for all ti ...
water quality criteria; ammonia; central nervous system; toxicity; analysis of variance; fecundity; pH; egg production; fish; Pimephales promelas; temperature; ammonium nitrogen; mortality
Abstract:
... Ammonia can cause adverse reproductive and mortality effects in individual fish by interacting with the central nervous system. The last published study that assessed the effects of ammonia on fathead minnow reproduction was a lifecycle study conducted in 1986. Our study's main goal was to re-evaluate ammonia toxicity on fathead minnow Pimephales promelas reproduction using a 20-day fecundity flow ...
Cyprinidae; alleles; economic valuation; fish; heterozygosity; loci; microsatellite repeats; population genetics; population structure; rivers; China
Abstract:
... Osteochilus salsburyi (Cypriniformes, Cyprinidae) is a small-sized fish of significant economic value. In this study, thirteen polymorphic microsatellite markers were developed in O. salsburyi and were examined on twenty individuals collected from the Wanquan River in the Hainan Island. The number of alleles (NA), polymorphism information content, observed and expected heterozygosity per locus ran ...
... Caryophyllaeus laticeps (Pallas 1781) (Cestoda: Caryophyllidea) is a monozoic tapeworm of cyprinid fishes with a distribution area that includes Europe, most of the Palaearctic Asia and northern Africa. Broad geographic distribution, wide range of definitive fish hosts and recently revealed high morphological plasticity of the parasite, which is not in an agreement with molecular findings, make th ...
Cyprinidae; alleles; fish; genetic markers; genetic variation; linkage disequilibrium; loci; microsatellite repeats; population structure; Yangtze River
Abstract:
... In the present study, we developed 16 polymorphic microsatellite loci in Rhinogobio ventralis, an endemic cyprinid fish in the upper reaches of the Yangtze River. The polymorphism of each locus was assessed in 32 individuals collected from Jiangjin section of the Yangtze River. A total of 126 alleles were detected and the number of alleles per locus ranged from 2 to 16. The observed and expected h ...
... Phylogenetic tree using mitochondrial genes and nuclear genes have long been used for augmenting biological classification and understanding evolutionary processes in different lineage of life. But a basic question still exists for finding the most suitable gene for constructing robust phylogenetic tree. Much of the controversy appears due to monophyletic, paraphyletic and polyphyletic clade makin ...
... The diet composition and feeding habits of the Eurasian otter (Lutra lutra) were studied by post mortem examination of individuals (n = 236) found dead in Hungary in order to test the dietary differences between sample types (stomach and rectum), calculation methods and different factors. A relationship was found between the summarized wet weight (W) and occurrence number (O) of food remains detec ...
... From May to August 2004, the available food base and diet of two cyprinid species, eurytopic roach, represented by 75 small specimens, and rheophilic dace, represented by 37 small specimens, were investigated in seasonal patches of submersed aquatic macrophytes (SAM) in the impounded lowland Warta River, Poland. The aim of the study was to recognize spatial and temporal patterns in the feeding of ...
... The aim of this study was to evaluate whether the enzyme-linked immunosorbent assay (ELISA) anti-Adda technique could be used to monitor free microcystins (MCs) in biological samples from fish naturally exposed to toxic cyanobacteria by using receiver operating characteristic (ROC) curve software to establish an optimal cut-off value for MCs. The cut-off value determined by ROC curve analysis in t ...
... During a survey on fishes from Hungarian freshwaters, the occurrence of eight Myxobolus species was registered in roach (Rutilus rutilus L.). Most species had a specific location within the fish host. Of the known species infecting roach, the intramuscularly developing species Myxobolus pseudodispar was found to be the most common. Besides Myxobolus intimus and Myxobolus diversicapsularis infectin ...
... Considerable differences in karyotypes of Tribolodon hakonensis from Primorye and the rivers of the Sea of Okhotsk drainage were demonstrated. These differences raise doubts that these fishes belong to one species and point to the necessity of more precise definition of the species status of the southern form of T. hakonensis. The karyological evidence is consistent with the data of mtDNA PCR-RFLP ...
... Exposure to estrogenic endocrine disrupting chemicals (EDCs) induces a range of adverse effects, notably on reproduction and reproductive development. These responses are mediated via estrogen receptors (ERs). Different species of fish may show differences in their responsiveness to environmental estrogens but there is very limited understanding on the underlying mechanisms accounting for these di ...
... Big Spring spinedace (Lepidomeda mollispinis pratensis) is a cyprinid whose entire population occurs within a section of Meadow Valley Wash, Nevada. Other spinedace species have suffered population and range declines (one species is extinct). Managers, concerned about the vulnerability of Big Spring spinedace, have considered habitat restoration actions or translocation, but they have lacked data ...
Cyprinidae; fish; habitats; lakes; latitude; rivers; solar energy; species diversity; Siberia
Abstract:
... The species composition of cyprinid fish in the subarctic region of Siberia has been analyzed. It is shown that only 10 out of 20 cyprinid species living in the reservoirs of Siberia have been registered in rivers and lakes of the Siberian subarctic region. The abundance of these species has been relatively low due to the adverse habitat conditions in high latitudes, mainly because of the lack of ...
... Bitterling fishes deposit their eggs on the gills of living mussels using a long ovipositor. We examined whether ovipositor length (OL) and egg shape correlated with differences in host mussel species in the family Unionidae among populations of the tabira bitterling (Acheilognathus tabira) in Japan. Bitterling populations that use mussels in the sub‐family Anodontinae possessed longer ovipositors ...
... The Black and Caspian Seas have experienced alternating periods of isolation and interconnection over many Milankovitch climate oscillations and most recently became separated when the meltwater overflow from the Caspian Sea ceased at the end of the last glaciation. Climate-induced habitat changes have indisputably had profound impacts on distribution and demography of aquatic species, yet uncerta ...
... A diversity of evolutionary processes can be responsible for generating and maintaining biodiversity. Molecular markers were used to investigate the influence of Plio-Pleistocene climatic oscillations on the evolutionary history of taxa restricted to the freshwaters of a classical glacial refugium. Population genetic, phylogenetic and phylogeographical methods allowed the inference of temporal dyn ...