Host tree unsuitability recognized by pine shoot beetles in flight
1989; Birkhäuser; Volume: 45; Issue: 5 Linguagem: Inglês
10.1007/bf01952042
ISSN0014-4754
AutoresJohn A. Byers, Boel Lanne, Jan Löfqvist,
Tópico(s)Insect-Plant Interactions and Control
ResumoIn spring, the landing rate of flying European pine shoot beetles,Tomicus piniperda L., on injured Scots pine diminishes as colonization continues. This is due to olfactory cues that indicate progressive host degradation. Verbenone was shown to play a role in the beetle's recognition of this unsuitability of a formerly suitable host, since the compound was increasingly released from colonized tree sections as they aged, but not from uninfested sections. Also, the release of verbenone at natural rates in the forest inhibited the attraction of beetles to host monoterpenes.
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