
TY  - JOUR
A1  - Scott, K. D. 
A1  - Wilkinson, K. S. 
A1  - Merritt, M. A. 
A1  - Scott, L. J. 
A1  - Lange, C. L. 
A1  - Schutze, M. K. 
A1  - Kent, J. K. 
A1  - Merritt, D. J. 
A1  - Grundy, P. R. 
A1  - Graham, G. C. 
T1  - Genetic shifts in <emph type="2">Helicoverpa</emph> <emph type="2">armigera</emph> H&#252;bner (Lepidoptera: Noctuidae) over a year in the Dawson/Callide Valleys
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 2003
VL  - 54
IS  - 8
SP  - 739
EP  - 744
KW  - molecular markers, migration, molecular biology, resistance management.
UR  - https://doi.org/10.1071/AR02164 
N2  - Microsatellites were used to analyse 68 collections of Helicoverpa armigera in the Dawson/Callide Valleys in central Queensland. The study aimed to evaluate the genetic structure in this region over a 12-month period (September 2000&#8211;August 2001). The results detected genetic shifts in H. armigera collections, with genetic changes occurring month by month. Collections in any month were genetically distant from the preceding month&#39;s collections. There was no observed difference between collections of H. armigera from the Biloela region and those found in the Theodore region of central Queensland. The data support the current area-wide management strategies for H. armigera by reinforcing the importance and contribution of local management practices. The study also indicates a need for the continuation of regional or Australia-wide approaches to management of the low levels of immigration that are occurring, and for future high pest pressure years. 
ER  -

