development on <em>Sitophilus granarius</em> L. (Col.: Curculionidae) at low temperatures
The granary weevil Sitophilus granarius is an important pest in grain stores throughout temperate regions. The larval parasitoid Lariophagus distinguendus is a potential candidate for biological control of this pest. In cooler climates the successful use of this parasitoid depends on its ability to survive low temperatures during winter. Investigations have been carried out at the DPIL to determine development rates of L. distinguendus at temperatures down to 15°C. Furthermore, an investigation was set up to simulate conditions in a grain store during winter. Grain infested with S. granarius and L. distinguendus was gradually cooled to a target temperature of 5°C and maintained there for 15 weeks. The grain was then gradually transferred to room temperature and emergence of S. granarius and L. distinguendus was registered. Preliminary results of these investigations will be presented.
Integrated Protection of Stored Product Pests, Proceedings of the Conference in Poznan, Poland Aug. 20-23, 2007, 2008, p. 161-164
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Iobc Wprs Bulletin
Conference of the IOBC/wprs Working Group on Integrated Protection of Stored Product Pests, 2008