The spatiotemporal dynamics of Tribolium castaneum (Herbst): Adult flight and gene flow

Ridley, A. W., Hereward, J. P., Daglish, G. J., Raghu, S., Collins, P. J. and Walter, G. H. (2011) The spatiotemporal dynamics of Tribolium castaneum (Herbst): Adult flight and gene flow. Molecular Ecology, 20 8: 1635-1646. doi:10.1111/j.1365-294X.2011.05049.x


Author Ridley, A. W.
Hereward, J. P.
Daglish, G. J.
Raghu, S.
Collins, P. J.
Walter, G. H.
Title The spatiotemporal dynamics of Tribolium castaneum (Herbst): Adult flight and gene flow
Formatted title
The spatiotemporal dynamics of Tribolium castaneum (Herbst): Adult flight and gene flow
Journal name Molecular Ecology   Check publisher's open access policy
ISSN 0962-1083
1365-294X
Publication date 2011-04-01
Sub-type Article (original research)
DOI 10.1111/j.1365-294X.2011.05049.x
Volume 20
Issue 8
Start page 1635
End page 1646
Total pages 12
Place of publication Oxford, U.K.
Publisher Wiley-Blackwell Publishing
Collection year 2012
Language eng
Formatted abstract
Tribolium castaneum (Herbst) has been used as a model organism to develop and test important ecological and evolutionary concepts and is also a major pest of grain and grain products globally. This beetle species is assumed to be a good colonizer of grain storages through anthropogenic movement of grain, and active dispersal by flight is considered unlikely. Studies using T. castaneum have therefore used confined or walking insects. We combine an ecological study of dispersal with an analysis of gene flow using microsatellites to investigate the spatiotemporal dynamics and adult flight of T. castaneum in an ecological landscape in eastern Australia. Flying beetles were caught in traps at grain storages and in fields at least 1 km from the nearest stored grain at regular intervals for an entire year. Significantly more beetles were trapped at storages than in fields, and almost no beetles were caught in native vegetation reserves many kilometres from the nearest stored grain. Genetic differentiation between beetles caught at storages and in fields was low, indicating that although T. castaneum is predominantly aggregated around grain storages, active dispersal takes place to the extent that significant gene flow occurs between them, mitigating founder effects and genetic drift. By combining ecological and molecular techniques, we reveal much higher levels of active dispersal through adult flight in T. castaneum than previously thought. We conclude that the implications of adult flight to previous and future studies on this model organism warrant consideration.
Keyword Autecology
Dispersal
Insect pest
Microsatellites
Migration
Rust red flour beetle
Tenebrionidae
Aggregation pheromone
Population-structure
Stored products
Helicoverpa-armigera
Movement behavior
Sperm precedence
Beetles
Coleoptera
Tenebrionidae
Migration
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Biological Sciences Publications
 
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Created: Sat, 03 Sep 2011, 03:12:32 EST by Gail Walter on behalf of School of Biological Sciences