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  • 1
    Electronic Resource
    Electronic Resource
    Chemical recognition of queen cells by honey bee workersApis mellifera (Hymenoptera: Apidae) (1994)
    Springer
    Chemoecology 5-6 (1994), S. 6-12 
    Details
    ISSN: 1423-0445
    Keywords: chemical communication ; queen cells ; brood pheromone ; brood recognition ; fatty acid esters ; Hymenoptera ; Apidae ; Apis mellifera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Honey bee workers are able to nurse or to destroy and thus to recognize the capped queen cells containing a pupa. Fatty acid esters, especially methyl oleate, methyl palmitate and ethyl oleate were found in significant amounts on the queen pupal cuticle. Methyl oleate, the major component, along with smaller amounts of methyl linoleate and methyl linolenate, were involved in the recognition of queen cells by workers. In natural conditions of the colony, queen cells containing a paraffin pupal lure with methyl oleate were accepted 5.9 days by workers, releasing about 1.8 queen pupa equivalents during that period, when control cells (without ester) were kept only 2.1 days. Although these esters are non specific to honey bees, they are of great importance in social regulation of the honey bee colony.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01259967
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Semiochemical basis of infestation of honey bee brood byVarroa jacobsoni (1992)
    Springer
    Journal of chemical ecology 18 (1992), S. 2041-2053 
    Details
    ISSN: 1573-1561
    Keywords: Apis mellifera ; brood pheromone ; brood recognition ; capping behavior ; fatty acid ethyl ester ; fatty acid methyl ester ; kairomone ; Varroa jacobsoni
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Capping of workerApis mellifera cells is elicited by four fatty acid methyl esters (Methyl palmitate, methyl oleate, methyl linoleate, and methyl linolenate) that are present on the surface of the worker and drone larvae only a few hours before the cell is closed. The amount of the pheromone reaches its maximum value when the cell has just been capped, at 8.5 and at 10.25 days of age, respectively, for worker and drone larvae. Thereafter, the amount of the pheromone decreases to its initial level. These data suggest that the esters also have a role in the capping of the drone cells, the temporal signal allowing the worker bees to recognize the age of the larvae and then to do the appropriate behavior. Two pheromonal components, methyl palmitate and methyl linolenate, and the inactive ethyl palmitate are kairomones attractive toVarroa females. Their secretion by the larvae follows the same pattern of development as the pheromonal signal. The longer and greater kairomonal signal in drone larvae, compared to worker secretion, could explain the preference ofVarroa towards drone brood.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00981926
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    Paper (German National Licenses)
    Fulltext
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