Electrophysiological and Behavioral Responses of Dendroctonus valens (Coleoptera: Curculionidae: Scolytinae) to Four Bark Beetle Pheromones

The red turpentine beetle, Dendroctonus valens LeConte (Coleoptera: Curculionidae: Scolytinae), has caused extensive mortality of Pinus tabuliformis Carrière in north central China. The electrophysiological and behavioral activities of the four bark beetle pheromones, frontalin, exobrevicomin, trans...

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Bibliographic Details
Published in:Environmental entomology 2009-04, Vol.38 (2), p.472-477
Main Authors: Zhang, Longwa, Clarke, Stephen R, Sun, Jianghua
Format: Article
Language:English
Subjects:
aggregation pheromones
Animals
bark beetle phermone
bark beetles
Behavior, Animal - drug effects
Biological and medical sciences
Bridged Bicyclo Compounds, Heterocyclic - pharmacology
carene
CHEMICAL ECOLOGY
China
cis-verbenol
Coleoptera
Coleoptera - drug effects
Coleoptera - physiology
Control
Curculionidae
Dendroctonus valens
Electrophysiology
exobrevicomin
Female
frontalin
Fundamental and applied biological sciences. Psychology
host plants
host volatiles
insect behavior
insect pheromones
Integrated pest control
kairomones
Male
Monoterpenes - pharmacology
olfactometry
pheromone blends
pheromone traps
Pheromones - pharmacology
Phytopathology. Animal pests. Plant and forest protection
Pinus
Pinus tabuliformis
Protozoa. Invertebrates
red turpentine beetle
Scolytidae
Scolytinae
Sexual Behavior, Animal
trans-verbenol
trapping
volatile compounds
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Summary:The red turpentine beetle, Dendroctonus valens LeConte (Coleoptera: Curculionidae: Scolytinae), has caused extensive mortality of Pinus tabuliformis Carrière in north central China. The electrophysiological and behavioral activities of the four bark beetle pheromones, frontalin, exobrevicomin, trans-verbenol, and cis-verbenol, singly or in combination with host-produced kairomones, were tested on red turpentine beetles. Both sexes showed a consistent electrophysiological response to the four test compounds. In Y-tube olfactometer bioassays, walking red turpentine beetles selected the host compound (+)-3-carene over any of the test compounds, but significantly higher numbers chose each tested pheromone over a blank control. The four compounds, tested singly or in combination, were not attractive to red turpentine beetles in field trapping studies in 2006 and 2007 and also did not significantly increase trap catch when combined with (+)-3-carene. Frontalin, alone or in combination with exo-brevicomin and trans-verbenol, significantly reduced the attractiveness of (+)-3-carene in 2006 but not in 2007. The possible roles of the pheromones in host and mate finding and selection are discussed.
ISSN:0046-225X
1938-2936
DOI:10.1603/022.038.0221