100,500 research outputs found

    The evolution of communal behavior in bees and wasps: an alternative to eusociality

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    William T. Wcislo, Simon M. Tierne

    A review of deviant phenotypes in bees in relation to brood parasitism, and a gynandromorph of Megalopta genalis (Hymenoptera: Halictidae)

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    Wcislo, W. T., Gonzalez, V. H., Arneson, L. (2004): A review of deviant phenotypes in bees in relation to brood parasitism, and a gynandromorph of Megalopta genalis (Hymenoptera: Halictidae). Journal of Natural History 38 (11): 1443-1457, DOI: 10.1080/0022293031000155322, URL: http://www.informaworld.com/openurl?genre=article&doi=10.1080/0022293031000155322&magic=crossref||D404A21C5BB053405B1A640AFFD44AE

    FIGS 1–3 in A review of deviant phenotypes in bees in relation to brood parasitism, and a gynandromorph of Megalopta genalis (Hymenoptera: Halictidae)

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    FIGS 1–3. (1) Wild-type female Megalopta genalis. (a) Head, width~4.16 mm; (b) labrum. (2) Wild-type male M. genalis. (a) Head, width~3.16 mm; (b) labrum. (3) Gynandromorph M. genalis. (a) Head, width~3.32 mm; (b) labrum.Published as part of Wcislo, W. T., Gonzalez, V. H. & Arneson, L., 2004, A review of deviant phenotypes in bees in relation to brood parasitism, and a gynandromorph of Megalopta genalis (Hymenoptera: Halictidae), pp. 1443-1457 in Journal of Natural History 38 (11) on page 1452, DOI: 10.1080/0022293031000155322, http://zenodo.org/record/525026

    Colony foundation, nest architecture and demography of a basal fungus-growing ant, Mycocepurus smithii (Hymenoptera, Formicidae)

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    Fernández-Marín, H., Zimmerman, J. K., Wcislo, W. T., Rehner, S. A. (2005): Colony foundation, nest architecture and demography of a basal fungus-growing ant, Mycocepurus smithii (Hymenoptera, Formicidae). Journal of Natural History 39 (20): 1735-1743, DOI: 10.1080/00222930400027462, URL: http://dx.doi.org/10.1080/0022293040002746

    Behavioural environments and niche construction: the evolution of dim-light foraging in bees

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    Most bees forage for floral resources during the day, but temporal patterns of foraging activity vary extensively, and foraging in dim-light environments has evolved repeatedly. Facultative dim-light foraging behaviour is known in five of nine families of bees, while obligate behaviour is known in four families and evolved independently at least 19 times. The light intensity under which bees forage varies by a factor of 10(8), and therefore the evolution of dim-light foraging represents the invasion of a new, extreme niche. The repeated evolution of dim-light foraging behaviour in bees allows tests of the hypothesis that behaviour acts as an evolutionary pacemaker. With the exception of one species of Apis, facultative dim-light foragers show no external structural traits that are thought to enable visually mediated flight behaviour in low-light environments. By contrast, most obligate dim-light foragers show a suite of convergent optical traits such as enlarged ocelli and compound eyes. In one intensively studied species (Megalopta genalis) these optical changes are associated with neurobiological changes to enhance photon capture. The available ecological evidence suggests that an escape from competition for pollen and nectar resources and avoidance of natural enemies are driving factors in the evolution of obligate dim-light foraging.William T. Wcislo and Simon M. Tierne

    Letter, [Author unclear] to Paulina T. Merritt

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    Handwritten letter to Paulina Merritt from an unknown author, October 1, 1876.

    Handwritten biographical information on Paulina T. McClung Merritt

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    A handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
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