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Ecotoxicology

, Volume 23, Issue 5, pp 757–766 | Cite as

Response of Tribolium castaneum to elevated copper concentrations is influenced by history of metal exposure, sex-specific defences, and infection by the parasite Steinernema feltiae

  • Paulina E. Kramarz
  • Anna Mordarska
  • Magdalena Mroczka
Article

Abstract

We studied how copper toxicity in the red flour beetle, Tribolium castaneum changed as a result of infection by the entomopathogenic nematode Steinernema feltiae. Measured traits were: respiration, growth and survival, as well as the concentrations of copper within beetle tissues and in its diet. By comparing F1 and F5 generation we were able to answer how long-term metal exposure changed the responses to both copper and the parasite. The beetles did accumulate copper; however, the results indicated that copper concentrations in beetle tissues were affected by nematode infection, the sex of the experimental animals, and the number of generations of exposure. Five generations of exposure to copper resulted in the highest dry body mass of infected beetles of both sexes; additionally, this group also had the lowest copper concentrations in their tissues. The only factor that had a significant effect on respiration was infection by nematodes: infected beetles of both sexes in both generational groups had significantly decreased respiration rates. Survival was lowest in nematode-infected animals of both sexes from both generations, regardless of exposure to copper. Our results confirm that an organism’s response to metal pollution is dependent on its health status and sex. We also found that the history of exposure to metal was equally important—we found enhanced resistance to copper intoxication after only five generations of exposure.

Keywords

Pre-exposure Metal toxicity Parasite Energy budget Biological control 

Notes

Acknowledgments

We thank Patrycja Gibas for assistance in the laboratory. We also thank Lindsay Higgins for the text editing and her comments on the manuscript. The project was supported by Grant No. NN304 027334 from the State Committee For Scientific Research and Jagiellonian University (DS/WBINOZ/INOŚ/747).

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Paulina E. Kramarz
    • 1
  • Anna Mordarska
    • 1
  • Magdalena Mroczka
    • 1
  1. 1.Institute of Environmental SciencesJagiellonian UniversityKrakówPoland

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