Body metal concentrations and glycogen reserves in earthworms (Dendrobaena octaedra) from contaminated and uncontaminated forest soil

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

  • Biostatistik
  • Institut for Jordbrugsproduktion og Miljø
  • Institut for Plantebeskyttelse og Skadedyr
  • Jord og Næringsstoffer
  • Plantepatologi og Entomologi
  • Afdeling for Terrestrisk Økologi
  • Zoofysiologi, Biologisk Institut
  • Biologisk Institut
  • Center for Kvantitativ Genetik og Genomforskning
  • Kvantitativ Genetik og Bioinformatik
  • Afdeling for Arktisk Miljø

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.

Detoxification and accumulation of cadmium and lead by earthworms carries little energetic expenses whereas strict internal regulation of aluminium and nickel has energetic costs.


Udgivelsesdato: January 2011
OriginalsprogEngelsk
TidsskriftEnvironmental Pollution
Vol/bind159
Nummer1
Sider (fra-til)190-197
Antal sider8
ISSN0269-7491
DOI
StatusUdgivet - 2011

Se relationer på Aarhus Universitet Citationsformater

ID: 4338551