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Bull Environ Contam Toxicol. 2007 Nov;79(5):504-7. Epub 2007 Jul 26.

Susceptibility of a carabid beetle, Pterostichus oblongopunctatus fab., from a gradient of heavy metal pollution to additional stressors.

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1
School of Biology, Ridley Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK. m.m.lagisz@ncl.ac.uk

Abstract

Insects inhabiting contaminated areas show increased susceptibility to other stressors, the purpose of this study was to investigate whether this phenomenon had a genetic basis. We investigated changes in susceptibility to food deprivation and insecticide (dimethoate) treatment of the ground beetle Pterostichus oblongopunctatus originating from four populations situated along a metal pollution gradient. To determine whether the increased susceptibility to additional stressors found in field-exposed animals from chronically metal-polluted sites had a genetic basis, our research was conducted on the second generation of laboratory-reared animals. There was no difference in susceptibility to the additional stressors indicating that the differences between populations observed in earlier studies do not have a genetic basis.

PMID:
17653615
DOI:
10.1007/s00128-007-9248-x
[Indexed for MEDLINE]
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