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  • 1
    Electronic Resource
    Electronic Resource
    Multiple maternity and multiple paternity in first generation brood from single foundress colonies of the sweat beeDialictus zephyrus (Hymenoptera: Halictidae) (1987)
    Springer
    Insectes sociaux 34 (1987), S. 131-135 
    Details
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Resume L'électrophorèse en gel d'amidon de 8 enzymes codées par différents loci a permis de déduire, chez l'Abeille primitivement eusocialeDialictus zephyrus, les génotypes de 31 fondatrices, apparemment solitaires, et de leur couvain de première génération. 13% des sociétés renfermaient une descendance provenant de plus d'une femelle et 23% la descendance soit de plus d'une femelle, soit d'une seule femelle fécondée à deux reprises. Ainsi, un total de 36% des sociétés apparemment fondées par une femelle unique contenaient des descendants de première génération qui ne pouvaient provenir d'une femelle, fécondée une fois pour toutes.
    Notes: Summary Genotypes for 31 apparent, single foundresses and their first generation brood in the primitively eusocial sweat beeDialictus zephyrus were inferred from starch-gel electrophoresis of 8 enzyme coding loci. Thirteen percent of the colonies contained the progeny of more than one female, and an additional twenty-three percent contained the progeny of either more than one female or a single, twice-mated female. Thus a total of thirty-six percent of colonies apparently founded by a single female contained first generation brood which were not the progeny of one, singly-mated female.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02223831
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  • 2
    Electronic Resource
    Electronic Resource
    Associations of Mites with Social Insects (1990)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 35 (1990), S. 469-488 
    Details
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.en.35.010190.002345
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Foraging and Mating Behavior in Apoidea (1980)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 25 (1980), S. 421-446 
    Details
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.en.25.010180.002225
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Mite Pests of Honey Bees (1982)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 27 (1982), S. 229-252 
    Details
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.en.27.010182.001305
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  • 5
    Electronic Resource
    Electronic Resource
    Exocrine secretions of bees (1985)
    Springer
    Journal of chemical ecology 11 (1985), S. 353-361 
    Details
    ISSN: 1573-1561
    Keywords: Bees ; Hymenoptera ; Halictidae ; Dufourea ; Dufour's gland ; mandibular gland ; exocrine products ; unsaturated ketones ; aliphatic esters ; citral ; nest cell provisions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The volatile components of the Dufour's gland extracts ofDufourea novaeangliae were analyzed by gas chromatography-mass spectroscopy. The following were identified: a series of five bis-homologous unsaturated ketones ranging from C10 to C18, a series of nine bis-homologous hexanoates ranging from C8 to C24, a series of three bis-homologous octanoates ranging from C8 to C12, and hexanoic, hexadecanoic, and octadecanoic acids. The ketones are all new natural products reported for bees. Several of these unsaturated ketones were also identified in extracts of the provision masses from their nest cells. Male mandibular gland extracts contained citral.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411422
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  • 6
    Electronic Resource
    Electronic Resource
    Macrocyclic lactones and isopentenyl esters in the Dufour's gland secretion of halictine bees (Hymenoptera: Halictidae) (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 319-331 
    Details
    ISSN: 1573-1561
    Keywords: Bees ; exocrine products ; mass spectrometry ; Agapostemon ; Augochlora ; Augochlorella ; Augochloropsis ; Dialictus ; Evylaeus ; Halictus ; Lasioglossum ; macrocyclic lactones ; isopentenyl esters ; Dufour's gland
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The volatile components of the Dufour's gland secretion of female halictid bees have been examined in 18 Nearctic species belonging toAgapostemon, Augochlora, Augochlorella, Augochloropsis, Dialictus, Evylaeus, Halictus, andLasioglossum. Nine saturated and unsaturated macrocyclic lactones ranging from C18 to C26 have been identified. Four of these compounds, the saturated C26 and the unsaturated C20, C22, and C24 lactones, are new natural products reported for halictine bees. A series of eight esters containing branched C5-alkenols and fatty acids has been identified in several species. The cell linings and pollen ball inAugochlora pura pura contain the same major lactones as the Dufour's gland. A discussion of the significance of the Dufour's gland secretion for apoid systematics and its function in the Halictidae is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00995755
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Solitary behavior in a high-altitude population of the social sweat bee Halictus rubicundus (Hymenoptera: Halictidae) (1996)
    Springer
    Behavioral ecology and sociobiology 38 (1996), S. 227-233 
    Details
    ISSN: 1432-0762
    Keywords: Key wordsHalictus rubicundus ; High-altitude ; population ; Solitary behavior ; Leucophora ; Holarctic distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In the subalpine region of the Rocky Mountains of Colorado, United States, Halictus rubicundus has a solitary life cycle, but it is social in other parts of its known range. The brood is protandrous, with a nearly equal investment in the sexes. Productivity averages 6.5 offspring per foundress female, similar to the second brood of social nests in New York, but less than the combined productivity of both New York broods. Leucophora sp. (Diptera: Anthomyiidae) is the principal cause of brood mortality in Colorado. Foundress females in about half the nests survive until brood emerge as adults. Retention of these foundresses decreases offspring mortality by 68%. Comparable abilities to express solitary behavior with a single brood may characterize other eusocial halictine lineages that have successfully invaded high altitudes in the Rocky Mountains. The apparent inability to do this may help explain the absence of other eusocial halictine bees and polistine wasps at high altitudes, despite their success at lower elevations in the same mountains. Presence or absence of this ability may help explain latitudinal distributions of these lineages in North America. Holarctic distributions of lineages with eusocial behavior can be explained by migration as solitary populations from Eurasia to North America across Pleistocene Bering land bridges, with re-expression of double-brooded, eusocial behavior when the species then extended their ranges southward in North America.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002650050236
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