Wigger, Horst
[Author]
;
Walter Stickan (Redaktion)
[Other];
Horst Wittmann, Kurt Fahrner (Kamera und Schnitt)
[Other];
Bernd Fietz (Ton)
[Other];
Michael Wagner (Graphik und Trick)
[Other];
Klaus Kemner (Tonmischung)
[Other]
Bark Beetle Predator and Six-toothed Bark Beetle - Aspects of a Predator-Prey-Relationship
Description:
The bark-beetle Pityogenes chalcographus is responsible for enormous damage in spruce tree plantations. Scent traps often capture the natural predator Nemosoma elongatum. The film examines the biology and ecology of the predator-prey relationship