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Enhancement of attraction and trap catches of the old‐house borer, Hylotrupes bajulus (Coleoptera: Cerambycidae), by combination of male sex pheromone and monoterpenes
Author(s) -
Reddy Gadi VP,
Fettköther Regina,
Noldt Uwe,
Dettner Konrad
Publication year - 2005
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.1044
Subject(s) - attraction , longhorn beetle , monoterpene , sex pheromone , pheromone , scots pine , kairomone , biology , botany , horticulture , toxicology , pinus <genus> , ecology , predation , philosophy , linguistics
Monoterpenoid compounds extracted from wood of Scots pine, Pinus sylvestris L, synergized the attraction of the old‐house borer, Hylotrupes bajulus (L), to the male pheromone (3 R )‐3‐hydroxy‐2‐hexanone ((3 R )‐ketol) + 1‐butanol. Glasshouse experiments using ground traps baited with extracts derived from Scots pine wood or the monoterpenes (+)‐α‐pinene, (−)‐verbenone, (−)‐ trans ‐pinocarveol and (+)‐terpinen‐4‐ol attracted significantly more H bajulus females, but caught fewer of them, than the synthetic pheromone mixture alone. Traps baited with higher concentrations of the monoterpene mixture attracted fewer females than those baited with lower dosages, whilst very high concentrations of the mixture (6–10 vials) caught no insects. However, a combination of (3 R )‐ketol + 1‐butanol or (±)‐3‐ketol + 1‐butanol with monoterpenes resulted in the capture of significantly more females than either the sex pheromone or the monoterpene mixture alone. Traps baited with a blend of the male's sex pheromone or the monoterpenes attracted significantly more, but caught fewer, males than females. Here again, a combination of the above blends enhanced the attraction of males significantly when compared with the attractancy of either of the compounds/mixtures used alone. Copyright © 2005 Society of Chemical Industry