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  • 1
    Electronic Resource
    Electronic Resource
    N,N-dimethyluracil and actinidine, two pheromones of the ponerine antMegaponera foetens (Fab.) (Hymenoptera: Formicidae) (1995)
    Springer
    Journal of chemical ecology 21 (1995), S. 1947-1955 
    Details
    ISSN: 1573-1561
    Keywords: Megaponera foetens ; Formicidae ; poison gland ; pygidial gland ; trail pheromone ; recruitment pheromone ; N,N-dimethyluracil ; 1,3-dimethyl-2,4(1H,3H)-pyrimidinedione ; actinidine ; electroantennogram
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract By means of gas chromatographic, mass spectrometric, and micro-preparative methodsN,N-dimethyluracil and actinidine were identified as two ethologically active compounds in the ponerine antMegaponera foetens. The synthesized poison gland compoundN,N-dimethyluracil released trail-following behavior, whereas actinidine, found in the pygidial gland, stimulated ants to leave the nest, possibly in an alarm reaction. Biological activity of the synthetic samples were confirmed by behavioral experiments and electroantennogram responses with worker antennae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02033854
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  • 2
    Electronic Resource
    Electronic Resource
    Trail Pheromone of Myrmicine Ant Pristomyrmex pungens (1997)
    Springer
    Journal of chemical ecology 23 (1997), S. 1025-1034 
    Details
    ISSN: 1573-1561
    Keywords: Ants ; Myrmicinae ; poison gland ; trail pheromone ; 6-n-pentyl-2-pyrone ; monoterpenes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The myrmicine ant Pristomyrmex pungens marks recruitment trails with poison gland secretions. The effective trail pheromone compound is 6-n-pentyl-2-pyrone. Poison gland components were identified by means of gas chromatographic coupled mass spectrometry. The biological activity was examined in trail-following experiments as well as in gas chromatographic coupled electroantennograms. In addition to 6-n-pentyl-2-pyrone, a number of monoterpenes were found in the poison gland secretion, i.e., α-pinene, camphene, β-pinene, myrcene, α-phellandrene, α-terpinene, and limonene. The terpenoid compounds increased the trail-following response only slightly when offered together with 6-n-pentyl-2-pyrone. In contrast to the latter component, synthetic monoterpenes elicited no orientation behavior in trail-following bioassays.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:JOEC.0000006386.14952.d7
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  • 3
    Electronic Resource
    Electronic Resource
    Mellein, a Trail Pheromone Component of the Ant Lasius fuliginosus (1997)
    Springer
    Journal of chemical ecology 23 (1997), S. 779-792 
    Details
    ISSN: 1573-1561
    Keywords: Ant ; Formicinae ; Lasius fuliginosus ; hindgut ; trail pheromone ; 3,4-dihydro-8-hydroxyisocoumarin ; mellein ; 2,3-dihydro-3,5-dihydroxy-6-methyl-4-H-pyran-4-one
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 3,4-Dihydro-8-hydroxy-3-methylisocoumarin (mellein) and 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one are among the volatile constituents identified from the hindgut of the formicine ant Lasius (Dendrolasius) fuliginosus Mellein induces trail-following behavior in worker ants of this species and evokes electrophysiological responses from their antennae. The trail-following activity released by (R)-(−)-mellein is significantly higher than that elicited by its (S)-(+) antipode, or the racemic mixture. The above-mentioned pyranone is found also in the honeydew of aphids, the customary diet of this ant species. The pyranone also evokes some trail-following behavior, but its activity is far less pronounced than that of mellein. Apparently, extra pheromone components are present in the hindgut, since the activity of these two constituents, either individually or as a mixture, does not completely account for the total activity released by a hindgut extract containing similar amounts of these two compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:JOEC.0000006410.35938.49
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  • 4
    Electronic Resource
    Electronic Resource
    Host Attractants for Red Weevil, Rhynchophorus ferrugineus: Identification, Electrophysiological Activity, and Laboratory Bioassay (1998)
    Springer
    Journal of chemical ecology 24 (1998), S. 425-437 
    Details
    ISSN: 1573-1561
    Keywords: Host attractants ; Rhynchophorus ferrugineus ; coconut pest ; γ-nonanoic lactone ; 4-hydroxy-3-methoxystyrene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A steam distillate from the freshly cut young bark of coconut palm Cocos nucifera was analyzed by gas chromatography, combined gas chromatography–electroantennographic detection (GC-EAD) and GC-MS to detect host attractants for the curculionid weevil Rhynchophorus ferrugineus, one of the major coconut pests in Sri Lanka. A twin FID peak consisting of a minor and a major component was shown to possess electrophysiological (EAG) activity. The minor peak was identified as γ-nonanoic lactone 1, while the major peak was identified as 4-hydroxy-3-methoxystyrene 2. In an EAG assay the synthetic racemic nonanoic lactone 1 did not elicit a considerable response in the antenna of R. ferrugineus, whereas the laboratory synthesized 2 showed activity. In a laboratory bioassay using a Y-type olfactometer, synthetic 1 and 2 elicited moderate attractant properties to R. ferrugineus, whereas a 1:1 mixture of the compounds showed increased attraction over that of the individual compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022304601123
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