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  • bark beetle  (5)
  • Springer  (5)
  • 1980-1984  (5)
  • 1970-1974
  • 1920-1924
  • 1980  (5)
  • 1971
Collection
Keywords
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  • Springer  (5)
Years
  • 1980-1984  (5)
  • 1970-1974
  • 1920-1924
Year
  • 1
    Electronic Resource
    Electronic Resource
    Pheromonal attraction and allomonal interruption ofIps pini in California by the two enantiomers of ipsdienol (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 703-717 
    Details
    ISSN: 1573-1561
    Keywords: Scolytidae ; bark beetle ; Ips pini ; pheromone ; ipsdienol ; enantiomer ; interruption ; allomone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Air containing volatile compounds from around maleIps pini boring in ponderosa pine logs from California was condensed, fractionated by GC, and assayed in the laboratory and field. The only fraction that showed consistent activity in laboratory assays contained a single compound identified as ipsdienol (2-methyl-6-methylene-2,7-octadien-4-ol). Synthetic racemic ipsdienol showed no activity in either the laboratory or field. However, (−)-ipsdienol, the naturally occurring enantiomer, was attractive toI. pini in the laboratory and field, whereas (+)-ipsdienol interrupted the response ofI. pini to a natural source of attraction in field tests. (−)-Ipsdienol is a major component of the attractant pheromone of this species, since its level of activity in laboratory assays was quantitatively comparable to that of the condensed volatiles, and it was as attractive as maleI. pini boring in ponderosa pine in the field. (+)-Ipsdienol is a component of the pheromone of the competing species,I. paraconfusus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987680
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  • 2
    Electronic Resource
    Electronic Resource
    Interspecific inhibition of the response of the bark beetles,Dendroctonus brevicomis andIps paraconfusus, to their pheromones in the field (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 149-164 
    Details
    ISSN: 1573-1561
    Keywords: Dendroctonus brevicomis ; Ips paraconfusus ; Pinus ponderosa ; bark beetle ; exo-brevicomin ; frontalin ; myrcene ; verbenone ; trans-verbenol ; attractants ; inhibition ; pheromones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Ponderosa pine logs infested withIps paraconfusus males inhibited the attraction ofDendroctonus brevicomis in the field to either attractive logs cut from a ponderosa pine tree under attack byD. brevicomis or to their synthetic pheromones,exo-brevicomin, frontalin, and myrcene. Logs cut from trees under attack byD. brevicomis inhibited the response ofI. paraconfusus to logs infested with maleI. paraconfusus.Exo-brevicomin, frontalin, and myrcene did not inhibit their response but verbenone did. Verbenone was found in maleD. brevicomis dissected from attractive logs under attack during the same time the response ofI. paraconfusus was inhibited by these logs.Trans-verbenol andexo-brevicomin were found in femaleD. brevicomis while verbenone,trans-verbenol, and frontalin were found in maleD. brevicomis in relatively large amounts near the beginning of the aggregation phase of host colonization. All of these compounds had decreased at a similar rate 5 days later. This gradual decrease inexo-brevicomin and frontalin probably caused the observed reduction in attraction. The ecological significance of these compounds in relation to termination of the aggregation phase ofD. brevicomis and reduction of interspecific competition is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987534
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of chemically mediated behavior on host tree colonization by four cohabiting species of bark beetles (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 395-414 
    Details
    ISSN: 1573-1561
    Keywords: Coleoptera ; Scolytidae ; bark beetle ; Dendrocionus ; Ips ; pheromone ; colonization ; attraction ; inhibition ; behavioral interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Chemically mediated behavioral interactions among four species of Scolytidae cohabitingPinus taeda in east Texas appear to be significant in delineating breeding areas within trees and in influencing the sequence of colonization.Dendroctonus frontalis usually arrived first and was not attracted to logs occupied by any of the threeIps species (I. avulsus, I. calligraphus, andI. grandicollis). The response ofI. avulsus to conspecific males was enhanced by the simultaneous presence of actively boring maleI. grandicollis. The response ofIps calligraphus was inhibited in areas whereI. avulsus was also present, but, in turn,I. calligraphus inhibited the response ofI. grandicollis and attractedI. avulsus. Ips grandicollis was strongly inhibited by the simultaneous presence of femaleD. frontalis or maleI. calligraphus, and in turn, maleI. grandicollis inhibitedD. frontalis. The result of this highly interactive olfactory system is that host trees are colonized very rapidly and that, in the process, disadvantageous reproductive interactions are minimized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402917
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  • 4
    Electronic Resource
    Electronic Resource
    Pheromone production by the bark beetle,Ips paraconfusus, in the nonhost, white fir (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 979-987 
    Details
    ISSN: 1573-1561
    Keywords: Ips paraconfusus ; pheromones ; nonhost ; Abies concolor ; Pinus ponderosa ; ipsenol ; ipsdienol ; bark beetle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract MaleI. paraconfusus confined to artificial entrance tunnels in white fir logs produced the pheromone compounds ipsenol and ipsdienol in their hindguts. The hindguts were attractive to females in a laboratory olfactometer and the male infested logs were attractive in field bioassay. The amount of pheromones produced and the amount of feeding and boring activity is much less in white fir than in ponderosa pine. There were no pheromones detected in the hindguts of recently emerged, unfed males.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994655
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of verbenone andtrans-verbenol on the response ofDendroctonus brevicomis to natural and synthetic attractant in the field (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 997-1013 
    Details
    ISSN: 1573-1561
    Keywords: Pinus ponderosa ; Dendroctonus brevicomis ; verbenone ; trans-verbenol ; tree protection ; bark beetle ; pheromones ; interruptant ; Coleoptera ; Scolytidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Verbenone andtrans-verbenol were investigated as candidate interruptants for use as tree protectants. Verbenone andtrans-verbenol, pheromones released byDendroctonus brevicomis during host colonization, reduced the trap catch ofD. brevicomis near sources of the attractant composed ofexo-brevicomm, frontalin, and myrcene. Catch reduction at some trap positions was greater at a high release rate than at a low release rate oftrans-verbenol alone and of the combination of verbenone plustrans-verbenol. Verbenone also reduced catches at traps baited with attractive bolts from trees under attack byD. brevicomis. Attempts to use verbenone to protect living trees fromD. brevicomis attack were inconclusive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994657
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