After 18-21 days, the weevils were extracted from the cages using an adapted vacuum-cleaner and counted.
Estimated mean values for weevils on logs, adjusted pro rata are shown for comparison but not included in the analysis.
The weevils were moved to new containers with fresh pine pieces every seventh day.
Corresponding numbers of weevils were removed from the control cages and the ryegrass replaced as necessary.
In contrast, in the outdoor treatments the weevils fed mainly (68-79%) on the exposed surfaces of the pine pieces.
Analyses of total weevil counts showed significant differences among treatments (see below).
Only a single first instar larvae was found per weevil larva.
These pre-reproductive weevils feed for a period before hibernating in the ground.
