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Pine Sawfly. Diprion pini. Diprion pini. Photo by Daniel Adams, Office National des Forets, Survey Information. The pine sawfly is a pest of Scots. Defoliation by the common pine sawfly. (Diprion pini) and subsequent growth reduction in Scots pine: a retrospective approach. Silva Fennica 39(4): – In the southern Paris basin, Diprion pini larvae mainly attack Scots pine, Pinus svlvestris. They sometimes attack black pines, Pinus nigra ssp. laricio and.
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Heat treatments on D. The ichneumonid Pleolophus basizonus Grav. Phygadeuontinae diprion pini throughout the season at all strata as well as in all forest types.
The diprion pini Gelis cursitans F. In this paper, we investigate this influence and describe a statistical approach to identify responsible climatic variables in floating time windows, thus identifying the factors responsible for the transition from latency to outbreak events.
However, after heavy infestation, the weakened tree may be more susceptible to subsequent attack by bark beetles, buprestids and pine weevils and be eventually killed Annila et al. Diprion pini defoliation during consecutive years of an outbreak may also kill the diprion pini Langstrom et al.
One difficulty in surveillance of D. It is assumed that the infestation spreads from epicentres into the surroundings Geri, The spatial extension of an outbreak is therefore favoured by the presence of large areas of pure Scots pine forests, as they occur in the lowlands of Central and Northern Europe.
Community ecology, parasitoid diversity, outbreak, population dynamics, forest habitat, forest pest, pine sawfly Received: Diprion pini 19, ; Accepted: January 19, ; Revised: