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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of ethology 5 (1987), S. 17-27 
    ISSN: 1439-5444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Behavioral observations ofTrigona (Lepidotrigona) ventralis hoozana revealed the following ethological features: (1) Cell construction and food provisioning in cells are semisynchronous, and ovipositions are always batched. (2) The queen displays a peculiar behavior, “repeated turnings”, in front of the provisioned cells. (3) The queen often violently solicits workers food and, unlike other studied taxa, workers feed the queen rather frequently. (4) Worker oviposition is frequent when the colony is queen-right. An ethological diagnosis ofLepidotrigona is given with comparisons to other stingless bee taxa.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1439-5444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Social behaviour of females of the Australian paper wasps,Ropalidia sp. nr.variegata (V) andR. gregaria gregaria (G) was observed near Darwin, the Northern Territory, Australia. Both species constructed multiple combs after the emergence of the first progeny. Frequency of intranidal dominance acts in speciesV on the post-emergence nests was significantly higher than that on the pre-emergence nests, while the frequency was constantly high in speciesG throughout the pre- and post- emergence periods. Some females ofG were specialized, at least on single days, to perform the particular task of water collection. In both species the dominant female tended to occupy the largest comb and subordinate females smaller combs. InG, not only the top-ranked female but also low-ranked ones oviposited, and a small proportion of eggs laid by the latter survived at least until the end of observation. InV, each colony had only 1 inseminated female which had highly developed ovaries, suggesting that subordinate females do not mate despite the presence of males. Such a limitation of mating to a single female in a colony has not been described previously in primitively eusocial wasps.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1439-5444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1439-5444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In southern Taiwan, most colonies (13 out of 14) ofParapolybia varia were founded by multiple females. Several females were present at the founding and increased up to 25 about one week after it. Observations on 2 pre-emergence colonies (in a total of 21 h) and those on 4 postemergence colonies (in 62 h) revealed the following facts: In the pre-emergence period, the top-ranking female dominated all others like a despot. Some females attending from the founding also dominated other females who joined later. Interactions among females gradually decreased in frequency after the founding and became milder. The top-dominant rarely left the nest and monopolized most of ovipositions by physically disturbing the subordinates' attempts to oviposit. Differential oophagy was not observed even when the subordinates succeeded in laying (6 cases). After the emergence of workers, the subordinate associates gradually disappeared and the colonies became monogynous (one egg-layer or queen per colony). Monogyny was also confirmed in October on 3 big colonies which had already produced reproductive forms. Eighty-six percent of females (n=50) taken from nests of early stage containing nothing or eggs alone were inseminated and 66% of them had well developed ovaries, while 90% of those (n=20) from more developed nests containing mature larvae and/or pupae were inseminated and only 25% had developed ovaries. This suggests that the ovaries of the subordinates had possibly, though not completely, degenerated through dominance interactions.
    Type of Medium: Electronic Resource
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