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Modeling cold tolerance in the mountain pine beetle (Dendroctonus ponderosae)

Dates

Publication Date
Start Date
2001
End Date
2030

Citation

Régnièrea, J., Bentz, B. 2007. Modeling cold tolerance in the mountain pine beetle, Dendroctonus ponderosae. http://dx.doi.org/10.1016/j.jinsphys.2007.02.007.

Summary

Cold-induced mortality is a key factor driving mountain pine beetle( Dendroctonus ponderosae) population dynamics. In this species, the supercooling point (SCP) is representative of mortality induced by acute cold exposure. Mountain pine beetle SCP and associated cold-induced mortality fluctuate throughout a generation, with the highest SCPs prior to and following winter. Using observed SCPs of field-collected D. ponderosae larvae throughout the developmental season and associated phloem temperatures, we developed a mechanistic model that describes the SCP distribution of a population as a function of daily changes in the temperature-dependent processes leading to gain and loss of cold tolerance. It is based on the changing proportion [...]

Contacts

Process Contact :
Meade Krosby
Metadata Contact :
Meade Krosby
Originator :
Jacques Régnièrea, Barbara Bentz

Attached Files

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Change in probability of mountain pine beetle survival.lpk 114.62 KB

Purpose

Our objective was to develop a process-based model of its cold tolerance that follows the general physiological principles of cold hardiness

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