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  • 1
    Electronic Resource
    Electronic Resource
    Nepotism in the honey bee (1990)
    [s.l.] : Nature Publishing Group
    Nature 346 (1990), S. 707-708 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Page et al.{ recently claimed that honey bees working on queen cells bias the rearing of queens in favour of super-sisters rather than half-sisters. To test the statistical significance of the finding, Page et al. identified "nepotistic" subfamilies (those with highest ratio of adults on queen ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/346707b0
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  • 2
    Electronic Resource
    Electronic Resource
    Anarchy in the beehive (1994)
    [s.l.] : Nature Publishing Group
    Nature 371 (1994), S. 749-749 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] J.-M. C. is on sabbatical from Laboratoire de Neurobiologie Comparee des Invertebres, INRA CNRS URA 11290, La Guyonnerie, BP 23, 91440 Bures-sur-Yvette, France. SIR - Worker bees in eusocial Hymenoptera colonies often have functional ovaries which can produce fertile male eggs1. The sons of a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/371749a0
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  • 3
    Electronic Resource
    Electronic Resource
    Evolution of bee dances (1992)
    [s.l.] : Nature Publishing Group
    Nature 360 (1992), S. 305-305 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - von Frisch1 and his students are famous for their descriptions of the highly evolved dance 'language' in Apis which is used by worker bees throughout this genus to communicate the distance and direction of sources of food, water and nest sites. Because only minor variation in dance biology ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/360305a0
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  • 4
    Electronic Resource
    Electronic Resource
    Entomology Asian honeybees parasitize the future dead (2005)
    [s.l.] : Nature Publishing Group
    Nature 437 (2005), S. 829-829 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The queen of a honeybee colony has a reproductive monopoly because her workers' ovaries are normally inactive and any eggs that they do lay are eaten by their fellow workers. But if a colony becomes queenless, the workers start to lay eggs, stop policing and rear a last batch of males before ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/437829a
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  • 5
    Electronic Resource
    Electronic Resource
    Subfamily recognition and task specialisation in honey bees (Apis mellifera L.) (Hymenoptera: Apidae) (1994)
    Springer
    Behavioral ecology and sociobiology 34 (1994), S. 169-173 
    Details
    ISSN: 1432-0762
    Keywords: Key words: Honey bee – Kin recognition – Nepotism – Trophallaxis – Supersisters – Apis mellifera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary. A honey bee (Apis mellifera) queen mates with about ten haploid drones, thus producing colonies composed of about ten subfamilies of super-sisters. An increasing but controversial body of literature supports the views that: (1) Members of each subfamily within a colony can recognise each other, and distinguish super-sisters from half-sisters. (2) Members of each subfamily use this recognition information and increase the reproductive fitness of their own subfamily at the expense of half-sisters through behaviour termed nepotism. A mathematical model is developed that shows that task specialisation by subfamilies, and bees that repeatedly undertake the behaviour within subfamilies, can influence the numbers of interactions among super-sisters, relative to the numbers of interactions between half-sisters. The model is then evaluated using a data set pertaining to trophallaxis behaviour in a two-subfamily colony. It is concluded that with this data set, task specialisation and subfamily recognition were indeed confounded, suggesting that the apparent subfamily recognition could easily have been an artefact of task specialisation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00167741
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  • 6
    Electronic Resource
    Electronic Resource
    Intra-colonial foraging specialism by honey bees (Apis mellifera) (Hymenoptera:Apidae) (1992)
    Springer
    Behavioral ecology and sociobiology 30 (1992), S. 291-295 
    Details
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Colonies of honey bees with two identifiable subfamilies were established. Returning foragers were captured and killed at two different sampling times. The mean volume and per cent soluble solids of crop contents were determined for each subfamily, as was the mean weight of the pollen pellets. No significant differences in nectar volume or concentration were detected between subfamilies within colonies. However, in a few colonies, significant subfamily by sampling-time interactions were present, suggesting that in these colonies subfamilies differed in their nectar and pollen collecting behavior at different times of day. The plant genera worked by pollen foragers were also determined. In four of six colonies, bees of different subfamilies were found to be majoring on different plant species (Fig. 1). Implications of this intra-colonial variance in foraging behavior for colony fitness are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00170594
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  • 7
    Electronic Resource
    Electronic Resource
    Task specialization in a wild bee, Apis florea (Hymenoptera: Apidae), revealed by RFLP banding (1994)
    Springer
    Behavioral ecology and sociobiology 34 (1994), S. 25-30 
    Details
    ISSN: 1432-0762
    Keywords: Honey bee ; Subfamily ; RFLP ; Task specialization ; Dwarf honey bee ; Thailand ; Multiple mating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Workers in a wild in situ colony of the dwarf honey bee, Apis florea, were observed undertaking the following behavior: liquid foraging, pollen foraging, guarding, stinging, fanning and wagging abdomen. Bees of each behavioral class were separately collected and frozen. Collections were made over a period of 10 days. Random samples of brood and workers were also collected. DNA was extracted from each bee and “fingerprinted” using a probe of unknown sequence obtained from an A. mellifera genomic library. Patterns of fingerprints (Fig. 1) were dissimilar among behavioral classes (Tables 1 and 2), strongly suggesting a genetic component to division of labor in this species. This result supports similar findings in A. mellifera in a species that is not troubled by many of the experimental difficulties inherent in A. mellifera.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00175455
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  • 8
    Electronic Resource
    Electronic Resource
    Subfamily recognition and task specialisation in honey bees (Apis mellifera L.) (Hymenoptera : Apidae) (1994)
    Springer
    Behavioral ecology and sociobiology 34 (1994), S. 169-173 
    Details
    ISSN: 1432-0762
    Keywords: Honey bee ; Kin recognition ; Nepotism ; Trophallaxis ; Supersisters ; Apis mellifera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A honey bee (Apis mellifera) queen mates with about ten haploid drones, thus producing colonies composed of about ten subfamilies of super-sisters. An increasing but controversial body of literature supports the views that: (1) Members of each subfamily within a colony can recognise each other, and distinguish supersisters from half-sisters. (2) Members of each subfamily use this recognition information and increase the reproductive fitness of their own subfamily at the expense of half-sisters through behaviour termed nepotism. A mathematical model is developed that shows that task specialisation by subfamilies, and bees that repeatedly undertake the behaviour within subfamilies, can influence the numbers of interactions among super-sisters, relative to the numbers of interactions between half-sisters. The model is then evaluated using a data set pertaining to trophallaxis behaviour in a two-subfamily colony. It is concluded that with this data set, task specialisation and subfamily recognition were indeed confounded, suggesting that the apparent subfamily recognition could easily have been an artefact of task specialisation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00167741
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  • 9
    Electronic Resource
    Electronic Resource
    Levels of polyandry and intracolonial genetic relationships in Apis florea (1995)
    Springer
    Behavioral ecology and sociobiology 37 (1995), S. 329-335 
    Details
    ISSN: 1432-0762
    Keywords: Polyandry ; Microsatellite ; Multiple mating ; Relatedness ; Apis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract DNA was extracted from worker and drone pupae of each of five colonies of the dwarf honey bee Apis florea. Polymerase chain reactions (PCR) were conducted on DNA extracts using five sets of primers known to amplify microsatellite loci in A. mellifera. Based on microsatellite allele distributions, queens of the five colonies mated with at least 5–14 drones. This is up to 3 times previous maximum estimates obtained from sperm counts. The discrepancy between sperm count and microsatellite estimates of the number of matings in A. florea suggests that despite direct injection of semen into the spermatheacal duct, either A. florea drones inject only a small proportion of their semen, or queens are able to rapidly expel excess semen after mating. A model of sexual selection (first proposed by Koeniger and Koeniger) is discussed in which males attempt to gain reproductive dominance by increasing ejaculate volume and direct injection of spermatozoa into the spermatheca, while queens attempt to maintain polyandry by retaining only a small fraction of each male's ejaculate. It is shown, at least in this limited sample, that the effective number of matings is lower in A. florea than in A. mellifera.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00174137
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  • 10
    Electronic Resource
    Electronic Resource
    Task specialization in a wild bee, Apis florea (Hymenoptera: Apidae), revealed by RFLP banding (1994)
    Springer
    Behavioral ecology and sociobiology 34 (1994), S. 25-30 
    Details
    ISSN: 1432-0762
    Keywords: Key words: Honey bee – Subfamily – RFLP – Task specialization – Dwarf honey bee – Thailand – Multiple mating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Workers in a wild in situ colony of the dwarf honey bee, Apis florea, were observed undertaking the following behavior: liquid foraging, pollen foraging, guarding, stinging, fanning and wagging abdomen. Bees of each behavioral class were separately collected and frozen. Collections were made over a period of 10 days. Random samples of brood and workers were also collected. DNA was extracted from each bee and “ fingerprinted ” using a probe of unknown sequence obtained from an A. mellifera genomic library. Patterns of fingerprints (Fig. 1) were dissimilar among behavioral classes (Tables 1 and 2), strongly suggesting a genetic component to division of labor in this species. This result supports similar findings in A. mellifera in a species that is not troubled by many of the experimental difficulties inherent in A. mellifera.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002650050015
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