Feeding behaviour of the black pine beetle, Hylastes ater (Coleoptera: Scolytidae)

1 The feeding behaviour of Hylastes ater was investigated at 15 degrees C and 20 degrees C on a range of tree species. The role of an aggregation pheromone and the part played by olfactory cues in food selection was also investigated. 2 A distinct hierarchical preference at both 15 degrees C and 20 degrees C such that Pinus radiata > Pinus sylvestris > > Picea abies > > Rubus fruticosus Betula pendula was shown. 3 Feeding on P sylvestris led to the highest weight gain, closely followed by R radiata and R abies. Slightly elevated feeding was observed at 20 degrees C compared with 15 degrees C. 4 Reduced feeding in the presence of B. pendula suggests the possibility of an anti-feedant effect and predamaged wood was found to be less nutritious, possibly due to greater plant defences. 5 The role of an aggregation pheromone was not supported. Olfactory cues enabled the detection of woody hosts, although differentiation between host was not observed. 6 These results are likely to be important in helping to design an effective integrated control approach against this pest.