SciELO - Scientific Electronic Library Online

 
vol.36 número5A survey of Vibrio cholerae O1 and O139 in estuarine waters and sediments of Beira, MozambiqueThe defouling of membranes using polymer beads containing magnetic micro particles índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google

Compartir


Water SA

versión On-line ISSN 1816-7950
versión impresa ISSN 0378-4738

Resumen

CRAFFORD, D  y  AVENANT-OLDEWAGE, A. Bioaccumulation of non-essential trace metals in tissues and organs of Clarias gariepinus (sharptooth catfish) from the Vaal River system: strontium, aluminium, lead and nickel. Water SA [online]. 2010, vol.36, n.5, pp.621-640. ISSN 1816-7950.

This is the first paper reporting on results obtained in a metal bioaccumulation study in the Vaal River system. It discusses concentrations of four non-essential elements (strontium, aluminium, lead and nickel) in water, sediment and various fish tissues. A second paper will report on concentration levels of the remaining five essential trace metals (chrome, copper, iron, manganese and zinc) studied. While heavy metals did accumulate in C. gariepinus tissues, no clear trends emerged with regard to differences between localities (Vaal Dam and Vaal River Barrage) or surveys. The highest non-essential element metal concentrations were generally recorded in gill (filaments and arches), followed by muscle, liver and lastly skin. This general trend appears to be in agreement with trends observed by other workers and reported in the literature. Variability in tissue metal concentrations in C. gariepinus within locality and seasons observed in this study is also reflected in results from available literature. This accentuates the importance of factors that influence the concentrations and bioavailability of trace metals.

Palabras clave : Heavy metal pollution; bioaccumulation; Clarias gariepinus; Vaal River Barrage; Vaal Dam; strontium; aluminium; lead; nickel.

        · texto en Inglés     · Inglés ( pdf )