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A TEMPERATURE-DRIVEN DEVELOPMENTAL MODEL FOR THE PARASITE BRACON MELLITOR (HYMENOPTERA: BRACONIDAE)1,2

Published online by Cambridge University Press:  31 May 2012

Carl S. Barfield
Affiliation:
Department of Entomology, and Biosystems Research Division, Department of Industrial Engineering, Texas A & M University, College Station, Texas 77843
Peter J. H. Sharpe
Affiliation:
Department of Entomology, and Biosystems Research Division, Department of Industrial Engineering, Texas A & M University, College Station, Texas 77843
Dale G. Bottrell
Affiliation:
Department of Entomology, and Biosystems Research Division, Department of Industrial Engineering, Texas A & M University, College Station, Texas 77843

Abstract

The influence of temperature on the development of immature stages of Bracon mellitor Say, a braconid parasite of the boll weevil, Anthonomus grandis Boheman, was studied at a series of constant and variable temperatures. Resulting developmental rates and times were compatible with recent advances in the theory of thermal responses exhibited by poikilotherms. Mean development times recorded were in close agreement with predictions calculated from a previously derived absolute reaction rate development model.

Bracon mellitor cohort developmental data were also checked against a prototype stochastic cohort development model. In this comparison, observed and predicted probability distributions agreed for constant and variable day/night temperature regimes but showed some differences under sinusoidal temperature regimes.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1977

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