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  • Coleoptera  (3)
  • Springer  (3)
  • Blackwell Science Ltd
  • International Union of Crystallography
  • 2000-2004
  • 1995-1999  (1)
  • 1990-1994  (2)
  • 1935-1939
Collection
Keywords
Publisher
  • Springer  (3)
  • Blackwell Science Ltd
  • International Union of Crystallography
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Abiotic mortality factors of the coffee berry borer (Hypothenemus hampei) (1994)
    Springer
    Entomologia experimentalis et applicata 71 (1994), S. 201-209 
    Details
    ISSN: 1570-7458
    Keywords: Hypothenemus hampei ; coffee berry borer ; abiotic mortality ; Coleoptera ; Scolytidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mortality of the coffee berry borer was studied under controlled laboratory conditions in Tapachula, Mexico. For adult female borers subjected to a range of relative humidities (RH) without food at 25°C, the longest mean survival time (20 days) was obtained at 93.5% RH. Adult borer survival was also studied at a range of temperatures for a fixed relative humidity (93.5% RH); at 20°C mean survival time was 28 days. Fecundity and mortality of borer stages in berries was studied for a range of humidities at 25°C. Maximum fecundity was obtained at 90 and 93.5% RH. Immature stages were ejected from the berry at 84% RH and above, which is interpreted as a form of brood hygiene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02426404
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  • 2
    Electronic Resource
    Electronic Resource
    Male-produced aggregation pheromone ofCarpophilus mutilatus (Coleoptera: Nitidulidae) (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 107-118 
    Details
    ISSN: 1573-1561
    Keywords: Carpophilus mutilatus ; sap beetle ; Coleoptera ; Nitidulidae ; aggregation pheromone ; hydrocarbon ; triene ; date ; host volatiles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Males ofCarpophilus mutilatus Erichson produce an aggregation pheromone to which both sexes respond. The pheromone includes two hydrocarbon components, (3E,5E,7E)-5-ethyl-7-methyl-3,5,7-undecatriene (1) and (3E,5E,7E)-6-ethyl-4-methyl-3,5,7-decatriene (2). These were emitted in a 10∶1 ratio and in a total amount of ca. 5 ng per feeding male per day. All tested doses of1 and2, from 0.03 to 30 ng, were more attractive than controls in wind-tunnel tests, but there was no evidence of synergism between these trienes. Dramatic synergism between the pheromone and a food-type coattractant occurred in the field, however. In a date garden in southern California, traps with a combination of synthetic1 and fermenting whole-wheat bread dough attracted 22 times more beetles than dough by itself and 295 times more than1 by itself. Volatile collections from males also contained three oxygenated compounds that were absent from females. One of these was tetradecanal (ca. 5 ng per male per day), but the structures of the other two are presently undetermined (0.8 and 1.1 ng per male per day). No function for these was demonstrated. One compound originating in the artificial diet, 2-phenylethanol, was particularly attractive in the wind-tunnel bioassay, as was the chromatographic solvent, methanol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987476
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  • 3
    Electronic Resource
    Electronic Resource
    Electrophysiologically and Behaviorally Active Volatiles of Buffalo Gourd Root Powder for Corn Rootworm Beetles (1999)
    Springer
    Journal of chemical ecology 25 (1999), S. 51-66 
    Details
    ISSN: 1573-1561
    Keywords: Coleoptera ; Chrysomelidae ; buffalo gourd root powder ; Cucurbita foetidissima ; Diabrotica virgifera virgifera ; D. undecimpunctata howardi ; D. barberi ; attractants ; solid-phase microextraction ; gas chromatography–electroantennography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The dried, powdered roots of buffalo gourd, Cucurbita foetidissima, were tested in a cornfield and shown to attract adult northern and southern corn rootworm beetles. Coupled gas chromatography–electroantennography (GC-EAG) analyses of headspace samples of the root powder showed several GC-EAG-active compounds on the antennae of female northern, southern, and western corn rootworms. Among other techniques, solid-phase microextraction and GC-mass spectrometry identified the following GC-EAG-active compounds: hexanol, nonanal, 1-octen-3-ol, benzaldehyde, benzyl alcohol, (E)-3-octen-2-one, (E,E)-3,5-octadien-2-one, and (E,Z)-3,5-octadien-2-one. EAG dose–response studies of several of the identified root powder volatiles also were performed and compared with results from known attractants. Field tests of synthetic root powder volatiles in commercial cornfields showed that northern corn rootworm adults were attracted to (E,E)-3,5-octadien-2-one. The antennae of the Diabrotica species and the field tests showed specificity for different geometrical isomers of 3,5-octadien-2-one, with a behavioral preference for (E,E)-3,5-octadien-2-one. In addition, we have shown that the efficacy of buffalo gourd root powder as a feeding stimulant and arrestant can be enhanced for northern and western corn rootworm adults by augmenting buffalo gourd root powder with additional (E,E)-3,5-octadien-2-one.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1020885032397
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