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  • queens  (1)
  • social wasps  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Comb cutting inRopalidia plebeiana: a new process of colony fission in social wasps (Hymenoptera: Vespidae) (1991)
    Springer
    Insectes sociaux 38 (1991), S. 105-110 
    Details
    ISSN: 1420-9098
    Schlagwort(e): Hymenoptera ; social wasps ; sociotomy ; behaviour ; Ropalidia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Females of an Australian polistine wasp,Ropalidia plebeiana, often use their mandibles to cut their nest-comb in spring, dividing it into two or more completely independent nests. Prior to the division, each of the major egg layers, often with some subordinates, tended to occupy a different part of a single comb. These females gnawed cells in the intermediate zone between such “territories”, and ultimately divided the comb. Many other females also built new nests near the nest aggregations, but addition of new nests by comb cutting represented 34.8 % of the increase in nest number. This method of colony fission is so far unknown in any eusocial Hymenoptera.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01240960
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Queen brood reared in worker cells by the social wasp,Vespula germanica (F.) (Hymenoptera: Vespidae) (1993)
    Springer
    Insectes sociaux 40 (1993), S. 181-190 
    Details
    ISSN: 1420-9098
    Schlagwort(e): Cells ; queens ; caste differentiation ; queen control ; Vespula
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary The rearing of queen brood from worker cells in the nests ofVespula germanica (F.) in Australia was found at all stages of the colony cycle from early summer to autumn. Worker cells used to rear queens were 17% wider at their open ends than cells used for worker production, and in all other respects their dimensions were greater. The volume of a worker cell used for queen nearing was 21% larger than cells used for rearing workers but half the volume of a normal queen cell. Queen pupae reared in worker cells were significantly smaller than those reared in queen cells of the same nest. The spatial distribution of queen pupae in worker comb tended to be random although some evidence of nonrandom clustering was noted. The significance of this phenomenon is discussed in relation to caste differentiation and queen-control of gyne initiation and production. It is concluded that the phenomenon is neither seasonal nor due to some intrinsic component of the colony's annual cycle, and that it is unlikely to be an emergency queen-rearing response. Development of queens in worker cells may have occurred during favourable feeding regimes, perhaps determined by the benign Australian environment.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01240706
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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