Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (1994) 67, 8-13

H. Wigger (1994)
Die Reaktion der Fraßkapazität des Borkenkäferräubers Nemosoma elongatum L. (Col., Ostomidae) im Imaginalstadium auf unterschiedliches Beuteangebot in künstlichen Gängen
[Response of adult feeding capacity of the bark beetle predator Nemosoma elongatum L. (Col., Ostomidae) to different prey quantities in artificial galleries]
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 67 (1), 8-13
Abstract: Feeding capacity of adult N. elongatum was tested at different prey quantities of the bark beetle Pityogenes chalcographus L. (Scolytidae) in artificial galleries. Maximum feeding capacity of 2.P. chalcographus/day was observed when 3 prey items/day were offered. There was no increase in prey consumption with further increase of prey quantities, i. e. there was no functional response. Possible reasons for restricted feeding capacity are discussed. It is suggested that N. elongatum adults exhibit a 'threshold strategy' which tends to reach an optimum feeding level instead of a maximum food intake. The consequences of restricted feeding capacity for limiting bark beetle populations are discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Pityogenes chalcographus
Nemosoma elongatum (predator)	Pityogenes chalcographus