Zinc Effects on the Embryos and Larvae of the Sharptooth Catfish, Clarias gariepinus (Burchell, 1822)

Viljoen, Alta; Steyn, G.J.; Vuren, J.H.J. van; Wade, PW

doi:10.1007/s00128-003-0085-2

Cited by 4 publications

(3 citation statements)

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“…This fish species is widely distributed in many eastern and southern African countries. Although some studies related to environmental pollution have been conducted in C. gariepinus (Timmers et al, 1988;Theron et al, 1991;Lien et al, 1997;Nguyen et al, 1999;Datta and Kaviraj, 2003;Mbongwe et al, 2003;Viljoen et al, 2003), limited information on the potential use of this fish species in environmental pollution monitoring programmes is available.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Gill Filament-Based EROD Assay in African Sharptooth Catfish (Clarias gariepinus) as a Monitoring Tool for Waterborne PAH-Type Contaminants

et al. 2005

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The ability of African sharptooth catfish (Clarias gariepinus) in inducing cytochrome P-450 class 1A (CYP1A) and glutathione S-transferase (GST) biomarkers was determined in liver and gill filaments after 4 days of waterborne exposure to the polycyclic aromatic hydrocarbon, benzo[a]pyrene (B[a]P). Male (n=6) and female (n=6) fish were exposed to B[a]P added to the water (30 microg/l) corresponding to 5 mg/kg total body weight. Five female and six male fish, exposed to acetone alone added to the water served as controls. The 7-ethoxyresurufin-O-deethylase (EROD) activity was measured in hepatic microsomes and gill filaments. In addition, GST activity was determined in the hepatic cytosolic fraction and fluorescent aromatic compounds (FACs) in bile and biliverdin. Benzo[a]pyrene strongly induced EROD activities in gill filaments of both sex. Levels of FACs per ml of bile were 17-fold higher in exposed fish compared to the controls. Correlations between induction of EROD activities in gill filaments and liver and between induction of EROD activities in gill filaments and levels of biliary FACs metabolites were strong. GST activities in the hepatic cytosolic fraction were similar amongst the treated and control groups. This is the first report on studies determining EROD activities in gill filaments and hepatic tissue, FACs in bile and GST in hepatic tissues of C. gariepinus after waterborne exposure to B[a]P. The findings suggest that the gill filament-based EROD assay in C. gariepinus can be used to monitor the pollution of AhR agonists in aquatic ecosystems in eastern and southern African countries.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Gill Filament-Based EROD Assay in African Sharptooth Catfish (Clarias gariepinus) as a Monitoring Tool for Waterborne PAH-Type Contaminants

et al. 2005

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“…Certain of these non-essential trace metals, for example cadmium, are major contaminants of aquatic environments (Munger et al, 1999) that are toxic towards aquatic organisms (Witeska et al, 1995) even at concentration found in natural waters (Pelgrom et al, 1994). The most important heavy metals in water pollution are zinc, copper, lead, cadmium, mercury, nickel and chromium (Abel, 1989;Seymore, 1994;Viljoen, 1999). Metal uptake by aquatic organisms is a two-phased process, firstly involving rapid adsorption or surface binding, followed by slower transport into the cell interior.…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of Heavy Metals in Organs of Fresh Water Fish Clarias Batrachus (Mangur)

Kapil,

Sachin,

P. V.

2022

The Scientific Temper

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The present study is to determine the bioaccumulation of heavy metals invarious organs of the fresh water fish Clarias batrachus exposed to heavy metalcontaminated water system. The experimental fish were exposed to Cr, Ni, Cd andPb concentrations for periods of 48 days.the heavy metals Cd, Pb, Ni & Cr wereassayed using atomic absorption spectrophotometery and the result were givenas μg/g dry Wt. The accumulation of heavy metals gradually increases in liverduring the heavy metals exposure period. The heavy metal accumulation in thegills was in the order of Pb>Cd>Ni>Cr, the heavy metal accumulation in the liverwas in the order of Pb>Cd>Ni>Cr. The bioaccumulation in kidney and flesh tissueswas in the order of Pb>Cd>Cr>Ni and Cr>Pb>Cd>Ni.

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“…Al momento, la pesquería de bagre en la región se encuentra aprovechada al máximo sostenible sólo en el estado de Tabasco, alcanzando una captura anual aproximada de 4.000 ton (Secretaria de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación, 2004). Contaminantes persistentes, bioacumulables y tóxicos han sido encontrados en otras especies de bagre (Achura & Osakwe, 2003;Adhikari, 2003;Cizdziel et al, 2003;Elia et al, 2003;Shukla et al, 2003;Viljoen et al, 2003;Agbozu et al, 2007). En A. felis su presencia se encuentra poco estudiada.…”

Section: Introductionunclassified

Metales pesados en tejido muscular del bagre Ariopsis felis en el sur del golfo de México (2001-2004)

Vázquez¹,

Florville-Alejandre²,

Herrera³

et al. 2008

Lat. Am. J. Aquat. Res.

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RESUMEN.Se analizó el contenido de metales pesados en tejido muscular del bagre, Ariopsis felis en el sur del golfo de México durante el período [2001][2002][2003][2004]. La investigación fue efectuada buscando establecer un marco de referencia ambiental para este organismo. La concentración metálica siguió el orden: Hg < Co < Pb < Ni < V < Cr. Fue observado un decremento en contenido de cobalto y vanadio, incremento en contenido de níquel, mercurio y cromo, y ausencia de estos comportamientos para contenido de plomo. Análisis de varianza de una sola vía confirman variación temporal significativa sólo en cobalto, mercurio, plomo y vanadio. Se determinaron coeficientes de correlación lineal significativos (p ≤ 0,05) para Co-V, Cr-Ni, Cr-Pb, Co-Hg, Ni-V y V-Pb. Las tres primeras asociaciones mostraron correlación positiva y las restantes correlación negativa. El análisis factorial reveló agrupamiento de los metales estudiados en función de su origen. Niveles de metales inferiores a los establecidos en normas nacionales e internacionales fueron encontrados en tejido muscular de A. felis del sur del golfo de México. Palabras clave: Ariopsis felis, bagre, metales, normas ambientales, sonda de Campeche, golfo de México. Heavy metals in muscular tissue of the catfish, Ariopsis felis, in the southern Gulf of Mexico (2001-2004)ABSTRACT. We analyzed the heavy metal content in the muscular tissue of the catfish, Ariopsis felis, in the southern Gulf of Mexico between 2001 and 2004. The research was done in order to establish an environmental frame of reference for this organism. The metal concentration was as follows: Hg < Co < Pb < Ni < V < Cr. Cobalt and vanadium contents were found to decrease and those of nickel, mercury, and chromium to increase; however, neither of these trends was observed for the lead content. One-way analyses of variance confirm significant temporal variation only for cobalt, mercury, lead, and vanadium. Significant linear correlation coefficients (p ≤ 0.05) were found for Co-V, Cr-Ni, Cr-Pb, Co-Hg, Ni-V, and V-Pb. The first three associations showed positive correlations, whereas the remaining ones had negative correlations. A factor analysis grouped the studied metals depending on their origins. The metal levels found in the muscular tissue of A. felis from the southern Gulf of Mexico were lower than those set by national and international regulations.

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Zinc Effects on the Embryos and Larvae of the Sharptooth Catfish, Clarias gariepinus (Burchell, 1822)

Cited by 4 publications

References 0 publications

Evaluation of the Gill Filament-Based EROD Assay in African Sharptooth Catfish (Clarias gariepinus) as a Monitoring Tool for Waterborne PAH-Type Contaminants

Evaluation of the Gill Filament-Based EROD Assay in African Sharptooth Catfish (Clarias gariepinus) as a Monitoring Tool for Waterborne PAH-Type Contaminants

Bioaccumulation of Heavy Metals in Organs of Fresh Water Fish Clarias Batrachus (Mangur)

Metales pesados en tejido muscular del bagre Ariopsis felis en el sur del golfo de México (2001-2004)

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