Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (1997) 121, 261-269

D. Scholz, A. Tchabi, C. Borgemeister, R.H. Markham, H.-M. Poehling and A. Lawson (1997)
Host-finding behaviour of Prostephanus truncatus (Horn) (Col., Bostrichidae): primary attraction or random attack?
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 121 (5), 261-269
Abstract: Host-finding behaviour of Prostephanus truncatus was evaluated in a four-choice olfactometer for reactions to odours of maize, cassava chips, wheat, cowpea (a non-host plant), and woody plant species in which reproduction has been observed, and of organisms associated with maize stores. P. truncatus reacted in general to odours from starchy commodities and to some of the woody plants. Beetles did not respond to volatiles from cowpea or organisms associated with maize stores, but did react to the aggregation pheromone produced by single male P. truncatus (secondary attraction). P. truncatus raised on cassava and emigrants from maize responded as strongly to maize odours as beetles raised on maize, whereas P. truncatus trapped with pheromone traps showed reduced or no reactions. Stored commodities seem to elicit short-range arrestment, but not primary attraction at long range. However, stored products might only be attacked facultatively by P. truncatus, co-evolved primary attraction could possibly exist to the native host-plant complex.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Christian Borgemeister, Hans-Michael Poehling, Richard H. Markham

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Prostephanus truncatus	Stored grain
	Prostephanus truncatus	Stored animal feeds/cassava