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Modelling transfer to animals accounting for trans-generational factors

Published online by Cambridge University Press:  09 January 2012

J. Barescut,
D. Lariviere,
T. Stocki,
J.E. Brown,
A. Hosseini and
C. Seymour
J.E. Brown
Affiliation:
Norwegian Radiation Protection Authority, P.O. Box 55, N-1332 Østeras, Norway
A. Hosseini
Affiliation:
Norwegian Radiation Protection Authority, P.O. Box 55, N-1332 Østeras, Norway
C. Seymour
Affiliation:
McMaster University, Canada, Hamilton, Ontario L8S4L8, Canada
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Abstract

The FASTer-lite model is multi-compartmental model that can be used to simulate transfer through a simple terrestrial food-chain. The model uses allometric relationships to describe dietary intake rates and radionuclide biological half-lives; the latter were mostly derived from published literature. This type of conventional modelling, for simulating the transfer of radionuclides to representative animals such as birds, results in the observation that activity concentrations associated with ecological compartments approach an equilibrium after a certain time interval. Whilst this approach has validity, however, it is not biologically plausible as it ignores reproduction. In this study we calculate how activity concentrations may vary if transfer to eggs and subsequent growth dilution occurring within juvenile birds is accounted for.

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