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  • Associative learning  (1)
  • Halictidae  (1)
  • 1
    Electronic Resource
    Electronic Resource
    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
    Keywords: Key words Proboscis extension reflex ; Associative learning ; Social insects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100710000068
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  • 2
    Electronic Resource
    Electronic Resource
    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
    Keywords: Lasioglossum zephyrum ; Halictidae ; Hymenoptera ; macrocyclic lactones ; sex pheromones ; kin recognition pheromones ; Dufour's gland
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012144
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    Paper (German National Licenses)
    Fulltext
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