Host-Finding Behavior of Dinoderus bifoveolatus (Coleoptera: Bostrichidae), an Important Pest of Stored Cassava: the Role of Plant Volatiles and Odors of Conspecifics

In cassava chips sampled on a local market in Cotonou, Republic of Benin, West Africa, Dinoderus bifoveolatus Wollaston was the predominant pest. In olfactometer experiments, cassava chips infested by male D. bifoveolatus were highly attractive to both sexes of the beetle, suggesting that male D. bi...

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Bibliographic Details
Published in:Annals of the Entomological Society of America 1999-09, Vol.92 (5), p.766-771
Main Authors: Borgemeister, Christian, Schäfer, Kerstin, Goergen, Georg, Awande, Symphorien, Setamou, Mamoudou, Poehling, Hans-Michael, Scholz, Dagmar
Format: Article
Language:English
Subjects:
Animal ethology
Benin
Biological and medical sciences
Bostrichidae
Dinoderus bifoveolatus
Fundamental and applied biological sciences. Psychology
Invertebrates
Medically important nuisances and vectors, pests of stored products and materials: population survey and control
Pests of stored products
Protozoa. Invertebrata
Psychology. Psychoanalysis. Psychiatry
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Summary:In cassava chips sampled on a local market in Cotonou, Republic of Benin, West Africa, Dinoderus bifoveolatus Wollaston was the predominant pest. In olfactometer experiments, cassava chips infested by male D. bifoveolatus were highly attractive to both sexes of the beetle, suggesting that male D. bifoveolatus produce an aggregation pheromone. Female D. bifoveolatus showed a significantly stronger response pattern than conspecific males. Sticky traps, baited with cassava chips harboring male D. bifoveolatus, set up in 2 regions of southern Benin, consistently caught considerable numbers of conspecifics. Trap catches differed significantly between the regions, and for 1 region also between the sites. The sex ratio of the trapped D. bifoveolatus was significantly female biased. Low numbers of 2 other bostrichids [i.e., Prostephanus truncatus (Horn) and Rhyzopertha dominica (F.)] were also recorded in the traps.
ISSN:0013-8746
1938-2901
DOI:10.1093/aesa/92.5.766