当前位置： SCI文献检索 > ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY期刊下所有文献 > Goldmining and mercury contamination of the piscivorous fish Hoplias aimara in French Guiana (Amazon basin).

Goldmining and mercury contamination of the piscivorous fish Hoplias aimara in French Guiana (Amazon basin).

Abstract：

:Mercury contamination of 35 freshwater fish species collected from the upper part of the Petit-Saut hydroelectric reservoir (French Guiana) was analyzed in relation to their food regimes. Results showed marked biomagnification: the ratio between extreme Hg concentrations in the muscle from piscivorous species (14.3 microg/g, dry weight (dw) for Acestrorhynchus guianensis) and herbivorous species (0.02 microg/g, dw for Myleus ternetzi) was 715. The piscivorous species Hoplias aimara was selected to define the relationships between biometric criteria and Hg accumulation. The probability of catching a H. aimara exceeding the WHO safety limit (2.5 microg Hg/g, dw) was computed from the kernel density estimator of mercury concentrations in the muscle: for fish weighing over 1 kg (fish usually consumed), the probability was 0.93. From these results, H. aimara could be considered an indicator of mercury biomagnification in the foodwebs and a potential risk to human populations that include this fish in their diet.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Durrieu G,Maury-Brachet R,Boudou A

doi

10.1016/j.ecoenv.2004.05.004

keywords:

subject

Has Abstract

pub_date

2005-03-01 00:00:00

pages

315-23

issue

3

eissn

0147-6513

issn

1090-2414

pii

S0147651304000739

journal_volume

60

pub_type

杂志文章

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