%0 Journal Article
%T Tissue-specific Bio-accumulation of Metals in Fish during Chronic Waterborne and Dietary Exposures
%A M. Javed
%J Pakistan Veterinary Journal
%D 2012
%I University of Agriculture, Faisalabad
%X Juvenile (120-day) three fish species viz. Catla catla, Labeo rohita and Cirrhina mrigala were exposed to chronic sub-lethal concentrations (1/3rd of LC50/LD50) of waterborne and dietary copper (Cu), cadmium (Cd), zinc (Zn), nickel (Ni) and cobalt (Co), separately, in glass aquaria under constant water temperature (29oC), pH (7.5) and hardness (225 mgL-1) for 12 weeks. Waterborne and dietary exposures caused significantly variable accumulation of metals in three fish species that followed Zn>Ni>Cd>Co>Cu. Fish liver showed significantly higher tendency to accumulate Cu (69.64¡À25.35 ¦Ìg g-1), Cd (68.93¡À21.65 ¦Ìg g-1), Zn (91.46¡À29.53 ¦Ìg g-1), Ni (74.64¡À18.61 ¦Ìg g-1) and Co (22.65¡À20.56 ¦Ìg g-1), followed by that of kidney and gills, with significant differences while muscle and bones exhibited significantly least tendency to accumulate all metals. Labeo rohita (31.63¡À2.43 ¦Ìg g-1) and C. mrigala (31.43¡À13.70 ¦Ìg g-1) exhibited significantly higher ability to amass metals than that of C. catla (27.96¡À10.28 ¦Ìg g-1). Waterborne exposure caused significantly higher accumulation of metals in fish liver (72.69¡À27.91 ¦Ìg g-1), followed by that in kidney, gills, skin, muscle, fins and bones with the average concentrations of 45.14¡À18.70, 39.47¡À21.13, 30.81¡À12.64, 22.65¡À17.34, 22.23¡À11.74 and 12.14¡À6.25 ¦Ìg g-1, respectively. Dietary exposure resulted into significant escalation of metals in fish liver (58.23¡À32.44 ¦Ìg g-1) while it was lowest in bones. Waterborne exposure caused significantly higher accumulation of all metals in fish body than that of dietary treatments.
%K Metals
%K Fish
%K Bio-accumulation
%K Organs
%U http://pvj.com.pk/pdf-files/32_4/567-570.pdf