Assessing moth migration and population structuring in Helicoverpa annigera (Lepidoptera : Noctuidae) at the regional scale: Example from the Darling Downs, Australia

Scott, Kirsten D., Lawrence, Nicole, Lange, Corinna L., Scott, Leon J., Wilkinson, Kendle S., Merritt, Melissa A., Miles, Melina, Murray, David and Graham, Glenn C. (2005) Assessing moth migration and population structuring in Helicoverpa annigera (Lepidoptera : Noctuidae) at the regional scale: Example from the Darling Downs, Australia. Journal of Economic Entomology, 98 6: 2210-2219.


Author Scott, Kirsten D.
Lawrence, Nicole
Lange, Corinna L.
Scott, Leon J.
Wilkinson, Kendle S.
Merritt, Melissa A.
Miles, Melina
Murray, David
Graham, Glenn C.
Title Assessing moth migration and population structuring in Helicoverpa annigera (Lepidoptera : Noctuidae) at the regional scale: Example from the Darling Downs, Australia
Journal name Journal of Economic Entomology   Check publisher's open access policy
ISSN 0022-0493
1938-291X
Publication date 2005-12
Sub-type Article (original research)
Volume 98
Issue 6
Start page 2210
End page 2219
Total pages 10
Editor John T. Trumble
Place of publication Lanham, MD, United States
Publisher Entomological Society of America
Collection year 2005
Language eng
Subject 270203 Population and Ecological Genetics
300299 Crop and Pasture Production not elsewhere classified
770804 Control of pests and exotic species
Abstract Analysis of gene flow and migration of Helicoverpa armigera (Hubner) in a major cropping region of Australia identified substantial genetic structuring, migration events, and significant population genotype changes over the 38-mo sample period from November 1999 to January 2003. Five highly variable microsatellite markers were used to analyze 916 individuals from 77 collections across 10 localities in the Darling Downs. The molecular data indicate that in some years (e.g., April 2002-March 2003), low levels of H. armigera migration and high differentiation between populations occurred, whereas in other years (e.g., April 2001-March 2002), there were higher levels of adult moth movement resulting in little local structuring of populations. Analysis of populations in other Australian cropping regions provided insight into the quantity and direction of immigration of H. armigera adults into the Darling Downs growing region of Australia. These data provide evidence adult moth movement differs from season to season, highlighting the importance of studies in groups such as the Lepidoptera extending over consecutive years, because short-term sampling may be misleading when population dynamics and migration change so significantly. This research demonstrates the importance of maintaining a coordinated insecticide resistance management strategy, because in some years H. armigera populations may be independent within a region and thus significantly influenced by local management practices; however, periods with high migration will occur and resistance may rapidly spread.
Keyword Entomology
Microsatellite
Molecular Biology
Resistance Management
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2006 Higher Education Research Data Collection
School of Biological Sciences Publications
 
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Created: Wed, 15 Aug 2007, 07:09:23 EST