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  • 1
    Electronic Resource
    Electronic Resource
    Secondary attraction and field activity of beetle-produced volatiles inDendroctonus terebrans (1989)
    Springer
    Journal of chemical ecology 15 (1989), S. 1513-1533 
    Details
    ISSN: 1573-1561
    Keywords: Dendroctonus terebrans ; Coleoptera ; Scolytidae ; bark beetles ; pheromones ; primary attraction ; secondary attraction ; host selection ; frontalin ; exo-brevicomin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Controlled infestation ofDendroctonus terebrans (Olivier) on bolts of slash pine,Pinus ellionii Engelm. var.elliottii, elicited greater attraction of wild conspecifics than uninfested bolts. Secondary attraction was not apparent, however, to standing slash pines that had received volunteer attacks, when compared with attraction to unattacked but susceptible trees. Hindguts from in-flight or attacking femaleD. terebrans contained frontalin, and those from in-flight or attacking males containedexo-brevicomin.Trans-pinocarveol,cis-verbenol,trans-verbenol, myrtenal, verbenone, myrtenol, and other compounds were produced by both sexes during gallery construction in host trees. Synthetic frontalin, when deployed with a standard host odor mixture of turpentine and ethanol, was very attractive to maleD. terebrans in field-trapping experiments. The addition of eitherexo-brevicomin orendo-brevicomin to the frontalin-turpentine combination negated the attractive effect of frontalin for males.Trans-verbenol, myrtenol, and verbenone had little effect onD. terebrans behavior. Responses of females did not differ among treatments in any of the 11 field experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012380
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  • 2
    Electronic Resource
    Electronic Resource
    Aggregation pheromone of the deodar weevll,Pissodes nemorensis (Coleoptera: Curculionidae): Isolation and activity of grandisol and grandisal (1984)
    Springer
    Journal of chemical ecology 10 (1984), S. 1417-1423 
    Details
    ISSN: 1573-1561
    Keywords: Pissodes nemorensis ; deodar weevil ; Coleoptera ; Curculionidae ; aggregation pheromone ; grandisol ; grandisal ; synergism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The bark weevilPissodes nemorensis, a pest of pines and exotic cedars in the southeastern United States, utilizes a male-produced aggregation pheromone. The presumed pheromone components, grandisol (cis-2-isopropenyl-1-methylcyclobutaneethanol) and its corresponding aldehyde, grandisal, were isolated from extracts of male volatiles and male hindguts. A field test in northern Florida showed that the combination of grandisol, grandisal, and slash pine (Pinus elliottii) bolts acted synergistically to attract large numbers of male and femaleP. nemorensis. These components deployed in various paired combinations were not as attractive as the tripartite mixture. There was no evidence that flying weevils were attracted to unbaited pine bolts. The aggregation pheromone forP. nemorensis appears to be similar to that of a parapatric sibling species,P. approximatus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990312
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