Body metal concentrations and glycogen reserves in earthworms (Dendrobaena octaedra) from contaminated and uncontaminated forest soil.
Stress originating from toxicants such as heavy metals can induce compensatory changes in the energy metabolism of organisms due to increased energy expenses associated with detoxification and excretion processes. These energy expenses may be reflected in the available energy reserves such as glycogen. In a field study the earthworm, Dendrobaena octaedra, was collected from polluted areas, and from unpolluted reference areas. If present in the environment, cadmium, lead and copper accumulated to high concentrations in D. octaedra. In contrast, other toxic metals such as aluminium, nickel and zinc appeared to be regulated and kept at low internal concentrations compared to soil concentrations. Lead, cadmium and copper accumulation did not correlate with glycogen reserves of individual worms. In contrast, aluminium, nickel and zinc were negatively correlated with glycogen reserves. These results suggest that coping with different metals in earthworms is associated with differential energy demands depending on the associated detoxification strategy.
Holmstrup
Martin
M
National Environmental Research Institute, Aarhus University, Department of Terrestrial Ecology, Vejlsøvej 25, DK-8600 Silkeborg, Denmark. Electronic address: martin.holmstrup@dmu.dk.
Sørensen
Jesper G
JG
National Environmental Research Institute, Aarhus University, Department of Terrestrial Ecology, Vejlsøvej 25, DK-8600 Silkeborg, Denmark.
Overgaard
Johannes
J
Zoophysiology, Department of Biological Sciences, Aarhus University, Building 131, DK-8000 Aarhus C, Denmark.
Bayley
Mark
M
Zoophysiology, Department of Biological Sciences, Aarhus University, Building 131, DK-8000 Aarhus C, Denmark.
Bindesbøl
Anne-Mette
AM
National Environmental Research Institute, Aarhus University, Department of Terrestrial Ecology, Vejlsøvej 25, DK-8600 Silkeborg, Denmark; Zoophysiology, Department of Biological Sciences, Aarhus University, Building 131, DK-8000 Aarhus C, Denmark.
Slotsbo
Stine
S
National Environmental Research Institute, Aarhus University, Department of Terrestrial Ecology, Vejlsøvej 25, DK-8600 Silkeborg, Denmark.
Fisker
Karina V
KV
National Environmental Research Institute, Aarhus University, Department of Terrestrial Ecology, Vejlsøvej 25, DK-8600 Silkeborg, Denmark.
Maraldo
Kristine
K
National Environmental Research Institute, Aarhus University, Department of Terrestrial Ecology, Vejlsøvej 25, DK-8600 Silkeborg, Denmark.
Waagner
Dorthe
D
National Environmental Research Institute, Aarhus University, Department of Terrestrial Ecology, Vejlsøvej 25, DK-8600 Silkeborg, Denmark; Zoophysiology, Department of Biological Sciences, Aarhus University, Building 131, DK-8000 Aarhus C, Denmark.
Labouriau
Rodrigo
R
Aarhus University, Faculty of Agricultural Sciences, Department of Genetics and Biotechnology, Research Centre Foulum, Blichers Allé 20, P.O. Box 50, DK-8830 Tjele, Denmark.
Asmund
Gert
G
National Environmental Research Institute, Aarhus University, Department of Arctic Environment, Frederiksborgvej 399, DK-4000 Roskilde, Denmark.
D000818:Animals; D006003:Glycogen / Q000378:metabolism*; D019216:Metals, Heavy / Q000378:metabolism*; D009835:Oligochaeta / Q000187:drug effects* / Q000378:metabolism*; D012989:Soil Pollutants / Q000633:toxicity*
D019216:Metals, Heavy; D012989:Soil Pollutants; D006003:Glycogen