Abstract
The behavior of 118 spruce bark beetles, Ips typographus,was observed on trees under colonization. Most individuals were followed from when they landed until they entered or left the tree. Both males and females spent most time inspecting crevices and searching for a place to start boring or for a hole to enter. These behaviors accounted for 87 and 70% of all behavioral acts recorded for males and females, respectively. Females entered galleries with males only after a period of pushing at the gallery entrance. Males spent on average 3 min and females 4 min on the bark before entering or leaving the tree. Thirty-three percent of the beetles eventually entered the tree, 31% flew away, 35% dropped from the host, and one beetle was eaten by a predator. The results are discussed in relation to the question of mate choice in bark beetles and to studies on attack dynamics of spruce bark beetle populations.
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Paynter, Q.E., Anderbrant, O. & Schlyter, F. Behavior of male and female spruce bark beetles,Ips typographus, on the bark of host trees during mass attack. J Insect Behav 3, 529–543 (1990). https://doi.org/10.1007/BF01052016
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DOI: https://doi.org/10.1007/BF01052016