Abstract
Three species of sawflies ( Gilpinia pallida, Neodiprion sertifer and Diprion pini) were reared on 15 different Scots pine clones, which divided into three groups according to their needle Δ-3-carene contents. Foliar 3-carene content poorly explained the variation in sawfly performance; it only correlated significantly with female cocoon weight of D. pini. Needle moisture, N, Ca, Al and Na concentrations were the best indicators of sawfly success. The negative correlation of N with performance differed from earlier findings. However, because of interaction with other factors, it was difficult to assess a definite effect of any single nutrient.
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