Mulberry-silkworm food chain--a templet to assess heavy metal mobility in terrestrial ecosystems.

Abstract:

:Assessment of the food chain mobility of heavy metals in the natural ecosystem receives more attention nowadays. In the present study, mulberry-silkworm food chain has been focused as a templet to assess the biomobility of heavy metals in soil-higher plant-insect hierarchy. Both in the case of Cd and Cu treatments, higher mobility was observed in the level-1 (soil-root) followed by level-3 (leaf-larva), level-4 (larvae-faecal) and level-2 (root-leaf). Consequently, roots accumulated more amounts of Cd and Cu, with a limited transport to the leaves. Among the two metals (Cd and Cu) tested, in the plant, the transfer potential of Cd exceeds that of Cu. Whereas in the case of leaf-larval transfer, Cu precedes over Cd. Accumulation of Cd and Cu in all the levels (1-4) tested showed a concentration dependent increase, except in the level 4 (larva-faecal) of Cd treatment where a declining trend was noticed.

journal_name

Environ Monit Assess

authors

Prince SP,Senthilkumar P,Subburam V

doi

10.1023/a:1010715606097

subject

Has Abstract

pub_date

2001-07-01 00:00:00

pages

231-8

issue

3

eissn

0167-6369

issn

1573-2959

journal_volume

69

pub_type

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