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Response of Tribolium castaneum and Rhyzopertha dominica to various resources, near and far from grain storage

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Ahmad, F., Ridley, A. W., Daglish, G. J., Burrill, P. R. and Walter, G. H. (2013) Response of Tribolium castaneum and Rhyzopertha dominica to various resources, near and far from grain storage. Journal of Applied Entomology, 137 (10). pp. 773-781. ISSN 0931-2048

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Article Link: http://dx.doi.org/10.1111/jen.12065


Tribolium castaneum (Herbst) and Rhyzopertha dominica (F.) are common cosmopolitan pests of stored grain and grain products. We evaluated the relative attraction of T.castaneum and R.dominica to wheat, sorghum and cotton seeds in the field, near grain storage facilities and well away from storages in southern and central Queensland using multiple trapping techniques. The results show that T.castaneum is more strongly attracted to linted cotton seed relative to wheat, whereas R.dominica did not respond to cotton seed at all and was attracted only to wheat. Significantly more adults of T.castaneum (10-15 times) were attracted to traps placed on the ground, near grain storage, than to equivalent traps that were suspended (1.5m above the ground) nearby. These results suggest that Tribolium beetles detect and respond to resources towards the end of their dispersal flight, after which they localize resources while walking. By contrast R.dominica was captured only in suspended traps, which suggests they fly directly onto resources as they localize them. The ability of both species to colonize and reproduce in isolated resource patches within the relatively short time of 1month is illustrated by the returns from the traps deployed in the field (at least 1km from the nearest stored grain) even though they caught only a few beetles. The results presented here provide novel insights about the resource location behaviours of both T.castaneum and R.dominica. In particular, the relationship of T.castaneum with non-cereal resources that are not conventionally associated with this species suggests an emphasis on these other resources in investigating the resource location behaviour of these beetles. This new perspective on the ecology of T. castaneum highlights the potential role of non-cereal resources (such as the lint on cotton seed) in the spread of grain pest infestations.

Item Type:Article
Business groups:Biosecurity Queensland
Additional Information:Biosecurity Queensland Ahmad, F. Ridley, A. W. Daglish, G. J. Burrill, P. R. Walter, G. H. Australian Government's Cooperative Research Centres Program; Pakistan Higher Education Commission We are thankful to Michelle Rafter and Valerie Ooi for help in sexing beetles. We would like to thank the farming enterprises and GrainCorp Australia for allowing the research to be conducted on their land. A.R., G.D., P.B. and G.W. would like to acknowledge the support of the Australian Government's Cooperative Research Centres Program, and F.A. is thankful for the funding provided by the Pakistan Higher Education Commission for his PhD studies. Wiley-blackwell Hoboken
Keywords:colonization cotton lint dispersal fungi ground traps resource location behaviour suspended traps herbst coleoptera-tenebrionidae stored-product insects bostrichidae food pheromone dynamics beetles wheat seeds
Subjects:Plant pests and diseases
Plant culture > Field crops
Live Archive:10 Apr 2014 07:15
Last Modified:03 Sep 2021 16:49

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