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  • Coleoptera  (11)
  • Springer  (11)
  • American Chemical Society
  • Cambridge University Press
  • International Union of Crystallography (IUCr)
  • 1985-1989  (11)
  • 1980-1984
  • 1965-1969
  • 1945-1949
  • 1987  (11)
Collection
Keywords
Publisher
  • Springer  (11)
  • American Chemical Society
  • Cambridge University Press
  • International Union of Crystallography (IUCr)
Years
  • 1985-1989  (11)
  • 1980-1984
  • 1965-1969
  • 1945-1949
Year
  • 1
    Electronic Resource
    Electronic Resource
    Cardenolide biosynthesis in chrysomelid beetles (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 460-462 
    Details
    ISSN: 1420-9071
    Keywords: Biosynthesis ; cardenolides ; Coleoptera ; chrysomelid beetles ; [23-14C]-cholesterol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Labeling experiments have shown that the chrysomelid beetleChrysolina coerulans is able to biosynthesize its own defensive cardenolides from cholesterol, via a pathway involving a C21 intermediate, as in plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01940455
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  • 2
    Electronic Resource
    Electronic Resource
    Misleading the Colorado potato beetle with an odor blend (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1139-1146 
    Details
    ISSN: 1573-1561
    Keywords: Colorado potato beetle ; Leptinotarsa decemlineata ; Coleoptera ; Chrysomelidae ; Solanum tuberosum ; Lycopersicon hirsutum f.glabratum ; chemoattraction ; masking ; mixed cropping ; olfactory orientation ; searching behavior
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Walking tracks of Colorado potato beetles,Leptinotarsa decemlineata Say, were recorded on a locomotion-compensator in response to wind, odors of host plantsSolanum tuberosum L. and nonhost plantsLycopersicon hirsutum f.glabratum C.H. Mull, and to mixtures of these plant species. Host-plant odor induced positive anemotactic responses in starved females, whereas odor of the nonhostL. hirsutum was neither repellent nor attractive. The attractiveness of host-plant odor, however, was neutralized in the odor blend of plant species. Masking the attractive host-plant odor will hinder the beetle's searching for host-plant patches, and this principle may be exploited in pest control by mixed cropping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020544
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  • 3
    Electronic Resource
    Electronic Resource
    Interruption of response ofDendroctonus brevicomis to attractive pheromone by release of pheromone at several rates and spacings (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 85-97 
    Details
    ISSN: 1573-1561
    Keywords: Dendroctonus brevicomis ; Coleoptera ; Scolytidae ; bark beetle ; western pine beetle ; pheromone ; interruption ; behavior ; release device
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The number of western pine beetles,Dendroctonus brevicomis, trapped at the center of three 90 × 90-m plots was reduced during a 16-hr period after surrounding an attractive source ofexo-brevicomin, frontalin, and myrcene with 16, 48, or 168 sources of the same attractant. Compounds were released from the center of the plot at 1 mg/16 hr/compound, and from the surrounding sources at 4–280 mg/16 hr/compound. About half of these amounts was released between 1530 hr and 1930 hr, the period of peak beetle flight. No treatment differences were apparent in reduction of catch within the range of release rates and spacings tested. When compounds were released continuously from 168 stations for 17 days, catch at the center of a plot was generally lower than catch before or after this period, but fluctuated daily. More beetles were caught on traps hung on ponderosa pines within a plot and the number of these traps catching beetles was greater when compounds were released from all stations than from only the center station. Beetles caught on traps were attracted into the plots from the surrounding forest, but appeared to be dispersed within the plot when compounds were released from many stations.D. brevicomis attacked at least 91 trees in the plots, of which 25 were killed during two summers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020353
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  • 4
    Electronic Resource
    Electronic Resource
    Extractives of seeds of the meliaceae: Effects onSpodoptera frugiperda (J.E. Smith),Acalymma vittatum (F.), andArtemia salina Leach (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 99-111 
    Details
    ISSN: 1573-1561
    Keywords: Spodoptera frugiperda ; Lepidoptera ; Noctuidae ; Acalymma vittatum ; Coleoptera ; Chrysomelidae ; brine shrimp ; Artemia salina ; insecticides ; antifeedants ; Meliaceae ; neem ; limonoids ; azadiractin ; seeds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Hexane and ethanol extracts of seeds from 22 species of plants of the family Meliaceae from a number of countries were prepared. The extracts were submitted to antifeedant and toxicity bioassays utilizing fall armyworm [Spodoptera frugiperda (J.E. Smith)] (Lepidoptera: Noctuidae) larvae and striped cucumber beetle [Acalymma vittatum (F.)] (Coleoptera: Chrysomelidae) adults. Toxicity tests were also performed with brine shrimp,Anemia salina Leach. Feeding inhibition and mortality produced by some of these extracts were comparable to and, in certain cases, slightly greater than the effects produced by comparable neem (Azadiracta indica A. Juss.) seed preparations. Brine shrimp toxicity data do not extrapolate to insect activity, and vice versa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020354
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  • 5
    Electronic Resource
    Electronic Resource
    Semiochemicals produced by western balsam bark beetle,Dryocoetes confusus Swaine (Coleoptera: Scolytidae) (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 823-836 
    Details
    ISSN: 1573-1561
    Keywords: Semiochemicals ; pheromones ; enantiomers ; western balsam bark beetle ; Dryocoetes confusus ; Coleoptera ; Scolytidae ; exo- andendo-brevicomin ; trans-verbenol ; verbenone ; myrtenol ; trans-pinocarveol ; cis- andtrans-p-menthen-7-ol ; 3-caren-10-ol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The most prominent beetle-produced volatiles identified in the abdominal extracts of maleDryocoetes confusus Swaine after they had bored for 24 hr in logs of subalpine fir,Abies lasiocarpa (Hook.) Nutt. were:exo andendo-brevicomin,trans-verbenol, verbenone, myrtenol,trans-pinocarveol,cis- andtrans-p-menthen-7-ol, 3-caren-10-ol, and several monoterpenes and sesquiterpenes. Myrtenol was the only conspicuous compound in extracts from males that had been exposed toA.lasiocarpa resin volatiles for 24 hr. Laboratory bioassays indicated that both (−)- and (+)-exo-brevicomin were attractive to femaleD. confusus, and that the (−) enantiomer did not inhibit response to its antipode. Results from field trapping experiments indicated that bothero-brevicomin and myrtenol are aggregation pheromones forD. confusus.exo-Brevicomin baits were effective in causing attack byD. confusus on baited and surrounding trees, suggesting that this pheromone may have utility in manipulating populations of the beetle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020163
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  • 6
    Electronic Resource
    Electronic Resource
    Defensive chemistry of the flour beetleTribolium brevicornis (LeC): (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1707-1723 
    Details
    ISSN: 1573-1561
    Keywords: Biosynthesis ; Coleoptera ; Tenebrionidae ; Tribolium brevicornis ; prostaglandin ; allomones ; synthetase inhibitor ; defensive secretion ; 2′-hydroxy-4′-methoxyacetophenone ; 2′-hydroxy-4′-methoxypropiophenone ; methyl 2,5-dihydroxy-6-methylbenzoate ; methyl 2,5-dihydroxy-6-efhylbenzoate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The defensive secretion ofTribolium brevicornis contains 12 organic components, including quinones, hydroquinones, hydrocarbons, aromatic ketones, and aromatic esters. The two ketones, 2′-hydroxy-4′-methoxyacetophenone and 2′-hydroxy-4′-methoxypropiophenone, and the two esters, methyl 2,5-dihydroxy-6-methylbenzoate and methyl 2,5-dihydroxy-6-ethylbenzoate, represent ca. 0.25% of the biomass of the beetles. Mass spectral and NMR analyses were used to elucidate the structures of all components. The ketones are potent prostaglandin synthetase inhibitors (PSI), and the esters are suspected to be PSI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00980212
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  • 7
    Electronic Resource
    Electronic Resource
    Monoterpene metabolism in female mountain pine beetles,Dendroctonus ponderosae Hopkins, attacking ponderosa pine (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1455-1480 
    Details
    ISSN: 1573-1561
    Keywords: Dendroctonus ponderosae ; mountain pine beetle ; Coleoptera ; Scolytidae ; monoterpene metabolism ; monoterpene alcohols ; pheromones ; allylic hydroxylation ; anti-Markovnikov hydration ; Pinus ponderosa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Abdominal volatiles of female mountain pine beetles,Dendroctonus ponderosae Hopkins, fed in ponderosa pine,Pinus ponderosa Dougl. ex Laws, and in lodgepole pine,P. contorta var.latifolia Engelmann, were analyzed by gas chromatography and coupled gas chromatography-mass spectrometry and were found to comprise host oleoresin components and beetle-produced alliylic alcohols, aldehydes, and ketones derived from host monoterpenes. Neitherexo- andendo-brevicomin nor frontalin were detected. Three metabolic pathways are proposed to account for the distribution of beetle-produced monoterpene alcohols. The first pathway involves hydroxylation of monoterpene substrates on allylic methyl groups which areE to a methylene or vinyl group. This oxidation pathway is indiscriminate with respect to substrate and probably functions to detoxify monoterpenes. A second pathway, which hydroxylates theendo-cyclic methyleneE to a vinyl methyl group of bicyclic monoterpenes to give almost exclusively thetrans alcohol, is hypothesized to be involved in pheromone production. A third detoxification pathway involves anti-Markovnikov addition of water to theexo-cyclic double bond of β-phellandrene to give predominantlytrans-2-p-menthen-7-ol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012291
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  • 8
    Electronic Resource
    Electronic Resource
    Influence of pheromone chirality on response byOryzaephilus surinamensis andOryzaephilus mercator (Coleoptera: Cucujidae) (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1525-1542 
    Details
    ISSN: 1573-1561
    Keywords: Oryzaephilus surinamensis ; Oryzaephilus mercator ; aggregation pheromone ; macrolide lactone ; (Z)-3-dodecen-11-olide ; (Z,Z)-3,6-dodecadien-11-olide ; (Z,Z)-5,8-tetradecadien-13-olide ; (Z, Z)-3,6-dodecadienolide ; (Z)-5-tetradecen-13-olide ; enantiomers ; racemate ; chirality ; aggregation behavior ; Coleoptera ; Cucujidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The response of the sawtoothed grain beetle,Oryzaephilus surinamensis (L.), and the merchant grain beetle,O. mercator (Fauvel), to synthetic racemic and chiral macrolide aggregation pheromones was assessed in pitfall olfactometers.O.mercator utilizes theR enantiomers of (Z)-3-dodecen-11-olide and (Z,Z)-3,6-dodecadien-11-olide.O. surinamensis utilizes theR enantiomers of (Z,Z)-3,6-dodecadien-11-olide and the Synergist (Z,Z)-5,8-tetradecadien-13-olide in combination with achiral (Z,Z)-3,6-dodecadienolide. For both species, the racemates of the respective chiral pheromones were effective attractants. The respectiveS enantiomers were inactive for both species and had no effect on the biological activity of the active antipodes. No diel periodicity in responsiveness to pheromones was detected inOryzaephilus spp. reared either on a 12∶12 light-dark photoperiod or in darkness. Nonpheromone macrolides, naturally released in trace amounts byOryzaephilus spp., did not affect the aggregation response of either species to its pheromones when these additional macrolides were combined with the pheromone mixtures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012295
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  • 9
    Electronic Resource
    Electronic Resource
    Factors contributing to resistance of exotic maize populations to maize weevil,Sitophilus zeamais (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 751-762 
    Details
    ISSN: 1573-1561
    Keywords: Sitophilus zeamais ; Coleoptera ; Curculionidae ; maize weevil ; maize ; resistance ; antifeedant ; sugar content ; hardness ; phenolic content ; ferulic acid ; p-coumaric acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Factors contributing to resistance of maize to infestation by the corn weevilSitophilus zeamais were investigated in four populations of indigenous and improved maize from Belize. Resistance was related to the antifeedant properties of grain as well as sugar content and mechanical hardness. Grain extracts of all populations of maize significantly reduced insect feeding on treated artificial diets when compared to control diets. Consumption of treated diets was negatively correlated with phenolic content of the grain extract. An analysis by GC-MS indicated that ferulic acid andp-coumaric acid were the principal phenolics present in the extracts, and insect feeding was strongly deterred when pure substances were added to insect diets. Fluorescence associated with ferulic acid and related compounds in grain sections was located in the pericarp and aleurone layer and was especially intense in the most resistant grain variety.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020157
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  • 10
    Electronic Resource
    Electronic Resource
    Analysis of long-range reproductive behavior of maleDiabrotica virgifera virgifera leconte andD. Barberi Smith and Lawrence to stereoisomers of 8-methyl-2-decyl propanoate under laboratory conditions (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1331-1341 
    Details
    ISSN: 1573-1561
    Keywords: Diabrotica virgifera virgifera ; Diabrotica barberi ; Coleoptera ; Chrysomelidae ; sex pheromone ; 8-methyl-2-decyl propanoate ; flight-tunnel bioassays
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Behavioral analysis of male attraction to stereoisomers of 8-methyl-2-decyl propanoate was conducted withDiabrotica virgifera virgifera andD. barberi using a flight tunnel.D. barberi males were attracted to the 2R,8R isomer only, and the response was inhibited by the addition of 2S,8R.D. v. virgifera males were also attracted to the 2R,8R isomer and were neither attracted nor inhibited by any of the other isomers. Males attracted to the lures displayed a series of behaviors characterized by a slow hovering flight upwind towards the odor source. While significant numbers of males of both species landed on the pheromone lure, none attempted copulation, indicating that other cues are necessary to induce this behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012280
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