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  • 1
    Electronic Resource
    Electronic Resource
    Seasonal variation in laboratory response to behavioral chemicals of the southern pine beetle (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 641-652 
    Details
    ISSN: 1573-1561
    Keywords: Dendroctonus frontalis ; Coleoptera ; Scolytidae ; seasonal variation ; pheromone content ; environmental parameters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The response ofDendroctonus frontalis to an attractant mixture (frontalin,trans-verbenol, and loblolly pine turpentine) was measured in the laboratory over a four-year period. Beetle response was highest in late winter and early spring, and lowest in midsummer and early fall. Males consistently responded higher than females. Female beetles displayed significantly higher responses in early morning and late afternoon than in the middle of the day. Analysis of beetle pronotal width and fat content revealed a high degree of correlation between these two parameters in female beetles, but there was no correlation of response with either fat content or pronotal width for either sex. There was no evident relationship between mean monthly beetle response and total amounts of frontalin andtrans-veibenol found in hindgut extracts. Daily temperature in months both during which beetles were bioassayed and immediately prior to bioassay was highly correlated to response to the attractant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989633
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Bark-beetle pheromones (1977)
    Springer
    Journal of chemical ecology 3 (1977), S. 657-666 
    Details
    ISSN: 1573-1561
    Keywords: Pheromones ; bark beetles ; Dendroctonus frontalis ; southern pine beetle ; bioassays ; microbial metabolites ; isoamyl alcohol ; isoamyl acetate ; 2-phenylethanol ; 2-phenylethyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The two major yeasts isolated from the southern pine beetle,Dendroctonus frontalis Zimmerman, areHansenula holstii Wickerham andPichia pinus (Hoist) Phaff; a third yeast,P. bovis van Uden et do Carmo-Sousa, has been isolated far less frequently. The main volatile metabolites produced by these yeasts are isoamyl alcohol, isoamyl acetate, 2-phenylethanol, and 2-phenylethyl acetate.We have found that certain of these compounds, particularly the esters, can greatly, enhance the attractiveness of a mixture of frontalin:trans-verbenol: turpentine (1:1:12), at certain limiting concentrations, to walking beetles in a laboratory bioassay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988065
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Southern pine beetle: Olfactory receptor and behavior discrimination of enantiomers of the attractant pheromone frontalin (1982)
    Springer
    Journal of chemical ecology 8 (1982), S. 873-881 
    Details
    ISSN: 1573-1561
    Keywords: Enantiomers ; bark beetle ; pheromone ; Dendroctonus frontalis ; Coleoptera ; Scolytidae ; southern pine beetle ; electrophysiology ; olfaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In laboratory and field bioassays, the response ofDendroctonus frontalis was significantly greater to the mixture of (1S, 5R)-(−)-frontalin andalpha-pinene than to (1R,5S)-(+)-frontalin andalpfa-pinene. Electro-physiological studies revealed that antennal olfactory receptor cells were significantly more responsive to (1S, 5R)-(−)-frontalin than to (1R, 5S)-(+)-frontalin. Both enantiomers stimulated the same olfactory cells which suggests that each cell possesses at least two types of enantiomer-specific acceptors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994788
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    Paper (German National Licenses)
    Fulltext
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