Abstract
Bark beetles,Ips typographus andPityogenes chalcographus, attracted by synthetic or natural pheromone to Norway spruce logs,Picea abies, preferred to colonize uninfested logs rather than logs occupied by these beetles, probably as a means of avoiding intra-and interspecific competition. The aggregation pheromone components ofP. chalcographus, chalcogran and methyl (E, Z)-2,4-decadienoate, inhibited the attraction response ofI. typographus to its pheromone components (methyl butenol andcis-verbenol), while the converse was not true. However, verbenone released from colonized bark inhibited pheromonal response ofP. chalcographus.
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Byers, J.A. Avoidance of competition by spruce bark beetles, Ips typographus and Pityogenes chalcographus. Experientia 49, 272–275 (1993). https://doi.org/10.1007/BF01923539
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DOI: https://doi.org/10.1007/BF01923539