Journal
ENVIRONMENTAL POLLUTION
Volume 145, Issue 1, Pages 339-347Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2006.03.002
Keywords
Formicidae; Gerridae; Myrmeleontidae; odonata; steel factory; tvarminne
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Heavy metal concentrations of different predatory insects were studied near by a steel factory and from control sites. Waterstriders (Gerridae), dragon fly larvae (Odonata), antlion larvae (Myrmeleontidae) and ants (Formicidae) were analyzed by AAS. In most cases the metal concentrations were higher near the factory, but e.g. waterstriders had higher cadmium concentrations in control area. Discriminant analysis clearly reveals that all these insect groups can be used as heavy metal indicators. However, the commonly used ants were the least effective in indicating the differences between the factory and control sites. Waterstriders are good in detecting differences in iron and manganese, but seem to be poor in accumulating nickel and lead. Antlions are efficient in detecting differences in iron. Antlions and ants are effective in accumulating manganese; as well antlions are efficient in accumulating cadmium. Waterstriders are poor in accumulating lead, but antlions and ants are effective. (c) 2006 Elsevier Ltd. All rights reserved.
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