42 results match your criteria riverine catfish

The Glyptothorax catfishes of the Euphrates and Tigris with the description of a new species (Teleostei: Sisoridae).

Zootaxa 2021 May 12;4969(3):453491. Epub 2021 May 12.

Zoological Research Museum Alexander Koenig, Leibniz Institute for Animal Biodiversity, Adenauerallee 160, 53113 Bonn, Germany..

The Glyptothorax species inhabiting the Euphrates and Tigris drainages are reviewed and six species are recognised, one of which is described herein as new species. Glyptothorax armeniacus is endemic to headwater streams in the Euphrates drainage. Glyptothorax kurdistanicus is endemic to the upper Tigris downstream to the Lesser Zab drainage. Read More

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Seasonal analysis of food items and feeding habits of endangered riverine catfish Rita rita (Hamilton, 1822).

Braz J Biol 2021 4;82:e237040. Epub 2021 Jun 4.

King Saud University, College of Science, Department of Zoology, Riyadh, Saudi Arabia.

This investigation presents the food and feeding activity of and endangered riverine catfish Rita rita, during February 2017-January 2018. A total of 225 fish individuals was analyzed for stomach contents by characterizing the dominant food items and morphometric features. The results divulged ten major food items consumed, preferably fish scales and eggs, teleost fishes, copepods, cladocerans, rotifers, and mollusks. Read More

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Brown watersnakes (Nerodia taxispilota) as bioindicators of mercury contamination in a riverine system.

Sci Total Environ 2021 Feb 28;755(Pt 2):142545. Epub 2020 Sep 28.

University of Georgia's Savannah River Ecology Laboratory, Aiken, SC 29802, United States of America.

Mercury (Hg) is a contaminant that enters the environment through natural or anthropogenic means. Ecological risk assessments have examined Hg bioaccumulation and effects in many taxa, but little is known about Hg dynamics in reptiles, or their potential use as bioindicator species for monitoring Hg in aquatic systems. Numerous snake species, like North American watersnakes (Nerodia spp. Read More

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February 2021

Ammoglanis natgeorum, a new miniature pencil catfish (Siluriformes: Trichomycteridae) from the lower Atabapo River, Amazonas, Venezuela.

J Fish Biol 2020 Nov 28;97(5):1481-1490. Epub 2020 Sep 28.

Department of Ichthyology, American Museum of Natural History, New York, New York, USA.

A new species of the sand-dwelling catfish genus Ammoglanis is described from a marginal habitat of the lower Atabapo River, a left-bank blackwater tributary of the upper Orinoco River in Amazonas, Venezuela, adjacent to the border with Colombia. Ammoglanis natgeorum is distinguished from all congeners by trunk pigmentation pattern consisting of scattered ventral chromatophores concentrated around the anal-fin base and numerous additional meristic and anatomical characteristics. A. Read More

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November 2020

Evidence for population genetic structure in two exploited Mekong River fishes across a natural riverine barrier.

J Fish Biol 2020 Sep 27;97(3):696-707. Epub 2020 Jul 27.

Department of Biological Sciences, Old Dominion University, Norfolk, Virginia, USA.

Impacts of urban development on aquatic populations are often complex and difficult to ascertain, but population genetic analysis has allowed researchers to monitor and estimate gene flow in the context of existing and future hydroelectric projects. The Lower Mekong Basin is undergoing rapid hydroelectric development with around 50 completed and under-construction dams and 95 planned dams. The authors investigated the baseline genetic diversity of two exploited migratory fishes, the mud carp Henicorhynchus lobatus (five locations), and the rat-faced pangasiid catfish, Helicophagus leptorhynchus (two locations), in the Lower Mekong Basin using the genomic double digest restriction site-associated DNA (ddRAD) sequencing method. Read More

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September 2020

Evolutionary optimization of an anatomical suction cup: Lip collagen content and its correlation with flow and substrate in Neotropical suckermouth catfishes (Loricarioidei).

J Morphol 2020 06 5;281(6):676-687. Epub 2020 May 5.

Department of Biology, Wake Forest University, Winston-Salem, North Carolina, USA.

In riverine ecosystems, downstream drag caused by fast-flowing water poses a significant challenge to rheophilic organisms. In neotropical rivers, many members of a diverse radiation of suckermouth catfishes (Loricarioidei) resist drag in part by using modified lips that form an oral suction cup composed of thick flesh. Histological composition and morphology of this cup are interspecifically highly variable. Read More

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Transcriptomic responses to pollution in natural riverine environment in Rita rita.

Environ Res 2020 07 14;186:109508. Epub 2020 Apr 14.

ICAR- Central Inland Fisheries Research Institute, Fishery Resource and Environmental Management Division, Biochemistry Laboratory, Barrackpore, Kolkata, 700 120, India; ICAR-Fisheries Science Division, Krishi Anusandhan Bhawan II, Pusa, New Delhi, 110 012, India. Electronic address:

Aquatic pollution is one of the most common threats to the ecological health of aquatic ecosystems and its biota. Fish as lower vertebrates are excellent model to study the impact and responses of aquatic pollution. In fish, gill is the main organ indicator of whole animal health as it comes in contact with the surrounding water and absorbs many pollutants and contaminants; therefore, investigations on alterations in fish gill at transcriptome level could provide newer insights to the stress response mechanism(s) and pathways. Read More

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Effects of a low-head weir on multi-scaled movement and behavior of three riverine fish species.

Sci Rep 2020 04 22;10(1):6817. Epub 2020 Apr 22.

Australian Rivers Institute, Griffith University, Nathan, Queensland, 4111, Australia.

Despite providing considerable benefits to society, dams and weirs threaten riverine ecosystems by disrupting movement and migration of aquatic animals and degrading riverine habitats. Whilst the ecological impacts of large dams are well studied, the ecological effects of low-head weirs that are periodically drowned out by high flows are less well-understood. Here we examine the effects of a low-head weir on fine- and broad-scale movements, habitat use, and breeding behaviour of three species of native freshwater fish in the Nymboida River in coastal eastern Australia. Read More

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Population Genomics in (Heptapteridae, Siluriformes) Reveals Deep Divergence and Adaptation in the Neotropical Region.

Genes (Basel) 2020 01 17;11(1). Epub 2020 Jan 17.

Sección Genética Evolutiva, Facultad de Ciencias, UdelaR, Iguá 4225, Montevideo 11400, Uruguay.

, a Neotropical fish with hybridization between highly divergent mitochondrial DNA (mtDNA) lineages, represents an interesting evolutionary model. Previous studies suggested that there might be demographic differences between coastal lagoons and riverine environments, as well as divergent populations that could be reproductively isolated. Here, we investigated the genetic diversity pattern of this taxon in the Southern Neotropical Basin system that includes the La Plata Basin, Patos-Merin lagoon basin and the coastal lagoons draining to the SW Atlantic Ocean, through a population genomics approach using 2b-RAD-sequencing-derived single nucleotide polymorphisms (SNPs). Read More

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January 2020

Occurrence of microplastics in the Han River and riverine fish in South Korea.

Sci Total Environ 2020 Mar 21;708:134535. Epub 2019 Nov 21.

Department of Environmental Health Sciences, School of Public Health, Seoul National University, Seoul 08826, South Korea. Electronic address:

Microplastic pollution has been paid attention due to the possibly global threat to human health and ecosystem in recent years. In this study, we investigated the distribution of microplastics in the Han River and its tributaries, South Korea, and in six species of inhabiting fish, namely carp (C. carpio), crucian carp (C. Read More

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Climato-environmental influence on breeding phenology of native catfishes in River Ganga and modeling species response to climatic variability for their conservation.

Int J Biometeorol 2019 Aug 7;63(8):991-1004. Epub 2019 Jun 7.

ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata, West Bengal, 700120, India.

The main objectives of the present study were to quantify the environmental, especially temperature and rainfall, effects on breeding phenology of selected catfish species and to predict changes in breeding phenology of the selected species in relation to climatic variability for the Ganga River Basin. The study showed that changes in rainfall pattern may have the most profound effect on gonad maturation and breeding of Mystus tengara and Mystus cavasius followed by the effect of increased water temperature due to rising air temperature. Indication of region-specific adaptation was noticed in reproductive phenology of Eutropiichthys vacha based on local trends of warming climate. Read More

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Cryptic Lineages and a Population Dammed to Incipient Extinction? Insights into the Genetic Structure of a Mekong River Catfish.

J Hered 2019 08;110(5):535-547

Department of Biological Sciences, Old Dominion University, Norfolk, VA.

An understanding of the genetic composition of populations across management boundaries is vital to developing successful strategies for sustaining biodiversity and food resources. This is especially important in ecosystems where habitat fragmentation has altered baseline patterns of gene flow, dividing natural populations into smaller subpopulations and increasing potential loss of genetic variation through genetic drift. River systems can be highly fragmented by dams built for flow regulation and hydropower. Read More

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Assessment of Hg contamination by a Chlor-Alkali Plant in riverine and coastal sites combining Hg speciation and isotopic signature (Sagua la Grande River, Cuba).

J Hazard Mater 2019 06 25;371:558-565. Epub 2019 Feb 25.

Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), CNRS-UPPA-UMR-5254, Hélioparc, 2 Avenue du Président Pierre Angot, F-64053 Pau, France.

Chlor-alkali plants (CAP) are recognized as major sources of mercury (Hg) in the environment. In this work, Hg concentration, speciation and isotopic signature were determined in sediments and biota (fish and oyster) from Sagua La Grande River (SG River) and the adjacent coastal zone in the vicinity of a CAP (Cuba). High Hg concentrations in surface sediments (up to 5072 ng g), mainly occurring as inorganic Hg, decrease with the distance from the CAP along the SG River and seaward. Read More

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Expression patterns of heat shock protein genes in Rita rita from natural riverine habitat as biomarker response against environmental pollution.

Chemosphere 2018 Nov 23;211:535-546. Epub 2018 Jul 23.

ICAR- Central Inland Fisheries Research Institute, Fishery Resource and Environmental Management Division, Biochemistry Laboratory, Barrackpore, Kolkata 700 120, India. Electronic address:

River pollution is one of the principal environmental concerns and biomonitoring tools can play an important role in pollution assessment in the riverine environment. Heat shock proteins (Hsps) have been found to be suitable tools for monitoring stress response. In the present study, expression analyses of hsp genes (hsp27, hsp47, hsp60, hsp70, hsc70, and hsp90) and selected hsp-regulatory genes (hsf1, hyou1, ask1, jnk) were carried out by RT-qPCR in catfish Rita rita collected from selected stretches of river Ganga to investigate changes in their expression patterns as biomarker response. Read More

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November 2018

Expression patterns and mutation analysis of p53 in fish Rita rita from polluted riverine environment.

Mutat Res Genet Toxicol Environ Mutagen 2018 Aug 31;832-833:41-51. Epub 2018 May 31.

ICAR - Central Inland Fisheries Research Institute, Fishery Resource and Environmental Management (FREM) Division, Biochemistry Laboratory, Barrackpore, Kolkata, 700120, India.

The present study was undertaken to investigate the alterations in gene expression patterns and for mutation analysis of p53 in the riverine catfish Rita rita collected from polluted riverine habitat. The partial p53 gene sequence of Rita rita generated showed a high degree of similarities with the DNA binding domains of fishes, mice and human. Transcriptomic analysis, carried out by quantitative real-time Polymerase Chain Reaction (RT-qPCR), showed significant down-regulation of p53 in fishes collected from most of the polluted stretches. Read More

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Species-specific variations in reproductive traits of three yellow catfish species (Pelteobagrus spp.) in relation to habitats in the Three Gorges Reservoir, China.

PLoS One 2018 16;13(7):e0199990. Epub 2018 Jul 16.

State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei province, China.

The reproductive biology of three yellow catfish congeners was studied in the Three Gorges Reservoir of the Yangtze River, China. We compared reproductive traits among the lentic, transitional, and lotic zones. A total of 4502 individuals of the three species was collected, and the sex ratio, size at 50% maturity, spawning season, fecundity, and egg size were determined. Read More

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January 2019

Relation of contaminants to fish intersex in riverine sport fishes.

Sci Total Environ 2018 Dec 21;643:73-89. Epub 2018 Jun 21.

Department of Biological Sciences, North Carolina State University, Raleigh, NC 27606, USA.

Endocrine active compounds (EACs) are pollutants that have been recognized as an emerging and widespread threat to aquatic ecosystems globally. Intersex, the presence of female germ cells within a predominantly male gonad, is considered a biomarker of endocrine disruption caused by EACs. We measured a suite of EACs and assessed their associated impacts on fish intersex occurrence and severity in a large, regulated river system in North Carolina and South Carolina, USA. Read More

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December 2018

Genetic Diversity of an Imperiled Neotropical Catfish and Recommendations for Its Restoration.

Front Genet 2017 12;8:196. Epub 2017 Dec 12.

Laboratório de Genética de Organismos Aquáticos e Aquicultura, Unidade de Biotecnologia, Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes, Mogi das Cruzes, Brazil.

The long-whiskered catfish (Family Pimelodidae) is endemic to the Paraíba do Sul River basin in southeastern Brazil. This species was heavily exploited by artisanal fisheries and faces challenges posed by dams, introduced species, and deterioration of critical habitat. The remaining populations are small and extirpated from some locales, and the species is listed as critically endangered in Brazil. Read More

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December 2017

Headwater Capture Evidenced by Paleo-Rivers Reconstruction and Population Genetic Structure of the Armored Catfish () in the Serra do Mar Mountains of Southeastern Brazil.

Front Genet 2017 5;8:199. Epub 2017 Dec 5.

Department of Ecology and Evolutionary Biology, University of California, Irvine, Irvine, CA, United States.

Paleo-drainage connections and headwater stream-captures are two main historical processes shaping the distribution of strictly freshwater fishes. Recently, bathymetric-based methods of paleo-drainage reconstruction have opened new possibilities to investigate how these processes have shaped the genetic structure of freshwater organisms. In this context, the present study used paleo-drainage reconstructions and single-locus cluster delimitation analyses to examine genetic structure on the whole distribution of , a 'near threatened' armored catfish from the Fluminense freshwater ecoregion in Southeastern Brazil. Read More

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December 2017

Shift from slow- to fast-water habitats accelerates lineage and phenotype evolution in a clade of Neotropical suckermouth catfishes (Loricariidae: Hypoptopomatinae).

PLoS One 2017 7;12(6):e0178240. Epub 2017 Jun 7.

Department of Biology, University of Louisiana at Lafayette, Lafayette, LA, United States of America.

Identifying habitat characteristics that accelerate organismal evolution is essential to understanding both the origins of life on Earth and the ecosystem properties that are most critical to maintaining life into the future. Searching for these characteristics on a large scale has only recently become possible via advances in phylogenetic reconstruction, time-calibration, and comparative analyses. In this study, we combine these tools with habitat and phenotype data for 105 species in a clade of Neotropical suckermouth catfishes commonly known as cascudinhos. Read More

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September 2017

Effects of a Dam Reservoir on the Distribution of Heavy Metals in Two Chilean Native Freshwater Fish Species.

Bull Environ Contam Toxicol 2016 Jul 26;97(1):24-30. Epub 2016 May 26.

Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.

In order to determine the effect of a dam on metal concentrations in riverine fish species, we studied fish inhabiting the influent (Cachapoal River) and effluent (Rapel River) of the Rapel Reservoir in central Chile. Heavy metals were quantified in gills, liver and muscle of the catfish Trichomycterus areolatus and the silverside Basilichthys microlepidotus. Also, the bioaccumulation index (BAI) was estimated by considering heavy metal concentrations obtained from water and sediment. Read More

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De novo development and characterization of polymorphic microsatellite markers in a schilbid catfish, Silonia silondia (Hamilton, 1822) and their validation for population genetic studies.

Mol Biol Rep 2016 Feb 9;43(2):91-8. Epub 2016 Jan 9.

Network of Aquaculture Centres in Asia-Pacific, Bangkok, 10900, Thailand.

The stock characterization of wild populations of Silonia silondia is important for its scientific management. At present, the information on genetic parameters of S. silondia is very limited. Read More

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February 2016

Organochlorine compounds in European catfish (Silurus glanis) living in river areas under the influence of a chlor-alkali plant (Ebro River basin).

Sci Total Environ 2016 Jan 11;540:221-30. Epub 2015 Jul 11.

GRECO, Institute of Aquatic Ecology, University of Girona, E-17071 Girona, Catalonia, Spain.

European catfish, Silurus glanis, were used as sentinel organisms of the influence of recent and past discharges of organochlorine compounds (OCs) from a chlor-alkali plant located in the Ebro River. The fish concentrations of hexachlorobenzene (HCB), polychlorobiphenyls (PCBs) and DDTs were very high along the last 100 km of the river, including the irrigation channels, e.g. Read More

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January 2016

Proteomic profiling of white muscle from freshwater catfish Rita rita.

Fish Physiol Biochem 2015 Jun 26;41(3):789-802. Epub 2015 Mar 26.

Proteomics Unit, Biochemistry Laboratory, Fishery Resource and Environmental Management Division, ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata, 700 120, India,

Muscle tissues contribute 34-48 % of the total body mass in fish. Proteomic analysis enables better understanding of the skeletal muscle physiology and metabolism. A proteome map reflects the general fingerprinting of the fish species and has the potential to identify novel proteins which could serve as biomarkers for many aspects of aquaculture including fish physiology and growth, flesh quality, food safety and aquatic environmental monitoring. Read More

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Morphological observation and length-weight relationship of critically endangered riverine catfish Rita rita (Hamilton).

Pak J Biol Sci 2014 Jan;17(2):234-40

The experiment was conducted to investigate the morphological status of the critically endangered riverine catfish Rita rita using morphometric and meristic traits. About 158 species of Rita were collected from the old Brahmaputra river in Mymensingh district and were studied in the laboratory of the Fisheries Biology and Genetics Department, Bangladesh Agricultural University. Measurement of length and weight of Rita were recorded by using measuring scale and electric balance respectively. Read More

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January 2014

Hypoxia, blackwater and fish kills: experimental lethal oxygen thresholds in juvenile predatory lowland river fishes.

PLoS One 2014 11;9(4):e94524. Epub 2014 Apr 11.

Institute for Land, Water and Society, Charles Sturt University, Albury, New South Wales, Australia; School of Agricultural and Wine Sciences, Charles Sturt University, Wagga Wagga, New South Wales, Australia.

Hypoxia represents a growing threat to biodiversity in freshwater ecosystems. Here, aquatic surface respiration (ASR) and oxygen thresholds required for survival in freshwater and simulated blackwater are evaluated for four lowland river fishes native to the Murray-Darling Basin (MDB), Australia. Juvenile stages of predatory species including golden perch Macquaria ambigua, silver perch Bidyanus bidyanus, Murray cod Maccullochella peelii, and eel-tailed catfish Tandanus tandanus were exposed to experimental conditions of nitrogen-induced hypoxia in freshwater and hypoxic blackwater simulations using dried river red gum Eucalyptus camaldulensis leaf litter. Read More

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January 2015

Diminished metal accumulation in riverine fishes exposed to acid mine drainage over five decades.

PLoS One 2014 24;9(3):e91371. Epub 2014 Mar 24.

Austral Radioecology, Oyster Bay, NSW, Australia.

Bony bream (Nematalosa erebi) and black catfish (Neosilurus ater) were sampled from the fresh surface waters of the Finniss River in tropical northern Australia, along a metal pollution gradient draining the Rum Jungle copper/uranium mine, a contaminant source for over five decades. Paradoxically, populations of both fish species exposed to the highest concentrations of mine-related metals (cobalt, copper, lead, manganese, nickel, uranium and zinc) in surface water and sediment had the lowest tissue (bone, liver and muscle) concentrations of these metals. The degree of reduction in tissue concentrations of exposed populations was also specific to each metal and inversely related to its degree of environmental increase above background. Read More

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January 2015

Histopathology and bioaccumulation of heavy metals (Cr, Ni and Pb) in fish (Channa striatus and Heteropneustes fossilis) tissue: a study for toxicity and ecological impacts.

Pak J Biol Sci 2013 May;16(9):412-20

Aquatic Toxicological Research Laboratory, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh-202002 (U.P), India.

Abstract: The water samples were collected from the 22 km segment III of Yamuna River from Okhla barrage. This segment receives water from 17 sewage drains of Delhi, Western Yamuna Canal (WYC), upper Ganga canal via Najafgarh drain and Hindon cut canal. Hence, the water samples collected were used to determine the presence of Chromium, Nickel and Lead through Atomic Absorption Spectrophotometry. Read More

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Genetic divergence in wild population of endangered yellowtail catfish Pangasius pangasius (Hamilton-Buchanan, 1822) revealed by mtDNA.

Mitochondrial DNA 2015 Apr 10;26(2):182-6. Epub 2014 Jan 10.

National Bureau of Fish Genetic Resources (ICAR) , Lucknow, Uttar Pradesh , India.

Pangasius pangasius, an endangered freshwater fish species, is an important component of capture fishery from Indian rivers. Samples collected through commercial catches from three riverine populations were analyzed with cytb (307 bp) and ATPase6&8 (842 bp) regions for population variation and differentiation. The sequences of the both the mitochondrial regions revealed high haplotype and low nucleotide diversity. Read More

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Species compositions and ecology of the riverine ichthyofaunas in two Sulawesian islands in the biodiversity hotspot of Wallacea.

J Fish Biol 2013 Jun;82(6):1916-50

Centre for Fish and Fisheries Research, School of Biological Sciences and Biotechnology, Murdoch University, Perth, WA 6150, Australia.

This account of the riverine ichthyofaunas from the islands of Buton and Kabaena, off south-eastern mainland Sulawesi, represents the first detailed quantitative checklist and ecological study of the riverine fish faunas in the biological hotspot of Wallacea. The results are based on analysis of samples collected by electrofishing at a wide range of sites from July to September in both 2001 and 2002. While the fauna was diverse, with the 2179 fishes caught comprising 64 species representing 43 genera and 22 families, the catches were dominated by the Gobiidae (26 species and 25% by numbers), Eleotridae (seven species and 27% by numbers), Zenarchopteridae (three species and 22% by numbers) and Anguillidae (two species and 12% by numbers). Read More

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