Abstract
AbstractEmergence from brood logs, take‐off activity and the duration of tethered flight was recorded in the first laboratory generation of the bark beetle Ips typographus L. (Coleoptera: Scolytidae) from five locations (ca 300 km apart) in Sweden and Denmark. Beetles of northerly origin emerged later from brood logs. This pattern was associated with an increasing proportion on non‐fliers towards the north. After overwintering, both the rate of development of flight activity and the proportion of non‐fliers were the same among populations. Flight duration of fliers was similar among populations and appeared unaffected by outbreak conditions.
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