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  • 2-heptanol  (1)
  • Associative learning  (1)
  • Halictidae  (1)
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  • 1
    Digitale Medien
    Digitale Medien
    Differences in performance on a reversal learning test and division of labor in honey bee colonies (2000)
    Springer
    Animal cognition 3 (2000), S. 119-125 
    Details
    ISSN: 1435-9456
    Schlagwort(e): Key words Proboscis extension reflex ; Associative learning ; Social insects
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract We studied the association between honey bee (Apis mellifera) division of labor and performance on an olfactory reversal-learning test. Manipulations of colony age structure and flight experience were used to test whether differences in performance are associated with age, current behavioral state, or flight experience. Nurse bees showed significantly faster rates of extinction to a learned odor than did foragers. This difference was associated primarily with differences in behavioral state, rather than age; it was seen when comparing nurses and foragers from typical colonies and normal-age nurses and precocious foragers from single-cohort colonies. Differences in extinction rate were not related to differences in flight experience; there was no difference between foragers and foraging-age bees denied flight experience. These results suggest that changes in learning and memory occur in association with division of labor. We speculate on the possible functional significance of the difference in extinction rate between nurses and foragers.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100710000068
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Mandibular glands of stingless bees (Hymenoptera: Apidae): Chemical analysis of their contents and biological function in two species ofMelipona (1983)
    Springer
    Journal of chemical ecology 9 (1983), S. 1465-1472 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Melipona ; Hymenoptera ; Apidae ; mandibular glands ; 2-heptanol ; skatole ; nerol ; undecane ; alarm response ; stingless bees
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Workers ofMelipona fasciata andM. interrupta triplaridis respond to their respective mandibular gland extracts with alarm recruitment and defensive behavior. Workers rapidly exit from the nest entrance, land on an intruding object, and bite with the mandibles while vibrating the flight muscles. These behaviors are accompanied by the release of the contents of the mandibular glands. Colonies of both species exhibited greater response to their own mandibular gland extracts than to those of other stingless bee species. Chemical analysis identified 2-heptanol as the major component in hexane extracts of each species. Undecane was a constituent of both species; skatole and nerol were identified only in extracts ofM. i. triplaridis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00988512
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  • 3
    Digitale Medien
    Digitale Medien
    Identification and bioassay of macrocyclic lactone sex pheromone of the halictine beeLasioglossum zephyrum (1985)
    Springer
    Journal of chemical ecology 11 (1985), S. 1447-1456 
    Details
    ISSN: 1573-1561
    Schlagwort(e): Lasioglossum zephyrum ; Halictidae ; Hymenoptera ; macrocyclic lactones ; sex pheromones ; kin recognition pheromones ; Dufour's gland
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract The macrocyclic lactones found in the Dufour's gland of the halictine beeLasioglossum zephyrum are female sex pheromones. Octadecanolide, eicosanolide, docosanolide, and tetracosanolide, as well as monounsaturated homologs of each, are components of the Dufour's gland secretion of this species. Furthermore, a series of odd-carbon-numbered saturated and unsaturated hydrocarbons and isopentenyl docosanoate occur in extracts of the Dufour's gland and of whole females. Two different mixtures of all four synthetic lactones, and additionally a treatment consisting of the natural extract, elicit higher response levels than two of the lactones separately or either of the controls.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01012144
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