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Journal of Radioanalytical and Nuclear Chemistry

, Volume 269, Issue 2, pp 267–270 | Cite as

Stable isotope tracer marking of individual boll weevils

  • W. D. James
  • A. T. Showler
  • J. K. Westbrook
  • J. S. Armstrong
Article

Summary

Stable isotope markers have been used to study animal nutrition for several decades and more recently to study the foraging and cultural habits of imported fire ants. In this work, we have extended that effort to evaluate the potential for marking boll weevils, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), with the rare earth element samarium to aid in studies of insect invasion and pest eradication protocols. Neutron activation analysis (NAA) was performed on the marked boll weevils as well as plant material from the cotton squares on which the insects were fed. Samarium levels in non-dosed insects average about 20 ng/g or about 100 pg total element per insect. Our computed average determination limit was 36 pg samarium/weevil. The determination limit for cotton plant squares and leaves averaged 3.5 ng/g and 8.2 ng/g, respectively. These initial results indicate the NAA method is capable of identifying individual marked insects which have assimilated 1 ng of samarium, a ten-fold increase in content over average blank values.

Keywords

Neutron Activation Analysis Control Chart Samarium Cotton Plant Boll Weevil 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Akadémiai Kiadó 2006

Authors and Affiliations

  • W. D. James
    • 1
  • A. T. Showler
    • 2
  • J. K. Westbrook
    • 3
  • J. S. Armstrong
    • 4
  1. 1.Center for Chemical Characterization and Analysis, Texas A&M University
  2. 2.US Department of Agriculture-Agricultural Research Services
  3. 3.US Department of Agriculture-Agricultural Research Services
  4. 4.US Department of Agriculture-Agricultural Research Services

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