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Pine shoot beetle, Tomicus piniperda (Col., Scolytidae), responses to common green leaf volatiles
Author(s) -
Poland T. M.,
Haack R. A.
Publication year - 2000
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1046/j.1439-0418.2000.00448.x
Subject(s) - green leaf volatiles , biology , hexanal , shoot , botany , horticulture , bark (sound) , insect , pest analysis , herbivore , ecology , food science
We tested the hypothesis that green leaf volatiles (GLVs) disrupt the response of overwintered pine shoot beetles, Tomicus piniperda (L.) to multiple‐funnel traps baited with the attractive host volatile α‐pinene. A combination of four GLV alcohols, 1‐hexanol ( E )‐2‐hexen‐1‐ol ( Z )‐2‐hexen‐1‐ol, and ( Z )‐3‐hexen‐1‐ol, caused 54 and 36% reduction in the number of pine shoot beetles captured in two separate trapping experiments. Similarly, a combination of the four alcohols plus two GLV aldehydes, hexanal and ( E )‐2‐hexenal, caused 38% reduction in the number of pine shoot beetles captured compared with α‐pinene alone. A blend of the two GLV aldehydes was not disruptive. None of the four GLV alcohols nor the two GLV aldehydes were disruptive when tested individually. The finding that the blend of four GLV alcohols reduced attraction of T. piniperda supports the general hypothesis that GLVs common to nonhost angiosperms are disruptive to conifer‐attacking bark beetles (Scolytidae).