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Solitary behavior in a high-altitude population of the social sweat bee Halictus rubicundus (Hymenoptera: Halictidae)
- G. C. Eickwort, J. Eickwort, J. Gordon, M. A. Eickwort, W. Wcislo
- BiologyBehavioral Ecology and Sociobiology
- 17 April 1996
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, eussocial behavior when the species then extended their ranges southward in North America.
An Anatomically Constrained Model for Path Integration in the Bee Brain
A complete circuit for path integration and steering in the central complex of the bee brain is proposed, with anatomically identified neurons suggested for each processing step, and the receptive fields of the newly discovered speed neurons can support path integration for the holonomic motion typical of bee flight.
Nocturnal Vision and Landmark Orientation in a Tropical Halictid Bee
- E. Warrant, A. Kelber, Anna Gislén, Birgit Greiner, W. Ribi, W. Wcislo
- Medicine, BiologyCurrent Biology
- 10 August 2004
Despite the scarcity of photons, Megalopta is able to visually orient to landmarks at night in a dark forest understory, an ability permitted by unusually sensitive apposition eyes and neural photon summation.
Floral resource utilization by solitary bees (Hymenoptera: Apoidea) and exploitation of their stored foods by natural enemies.
The evolution of resource specialization (including parasitism) in bees presents excellent opportunities to investigate phenotypic mechanisms responsible for evolutionary change.
Social interactions and behavioral context in a largely solitary bee, Lasioglossum (Dialictus) figueresi (Hymenoptera, Halictidae)
- W. Wcislo
- BiologyInsectes Sociaux
- 1 August 1997
Females paired with a bee taken from the same nest were less likely to be aggressive than a bee paired with one from a different nest, suggesting familiarity (possibly kinship) can modulate aggressive behavior.
The evolution of nocturnal behaviour in sweat bees, Megalopta genalis and M. ecuadoria (Hymenoptera: Halictidae): an escape from competitors and enemies?
- W. Wcislo, L. Arneson, Kari Roesch, V. Gonzalez, Adam R. Smith, Hermógenes Fernández
- 1 November 2004
Overall nest survivorship rates were comparable to those for diurnal relatives, but rates of cell parasitism for Megalopta (< < 5%) were substantially lower than they are for day-flying relatives, offering some support for the hypothesis that the evolution of nocturnal behaviour enables escape from natural enemies.
Ecological traits and evolutionary sequence of nest establishment in fungus‐growing ants (Hymenoptera, Formicidae, Attini)
A comparative survey of nest-founding behaviour in Attini is presented, based on 441 foundress nests of 20 species in eight attine genera, suggesting that the behavioural mechanisms used to isolate the incipient garden may have been key innovations in the early evolution of attine fungiculture.
Behavior and Phenology of a Specialist Bee (Dieunomia) and Sunflower (Helianthus) Pollen Availability
The phenological relationships between nesting behavior of a specialist, solitary bee, Dieunomia triangulifera, and the flowering of its primary pollen source, Helianthus annuus, were studied for 3 yr at a site in northeastern Kansas to suggest that resource limitation is important in shaping patterns of provisioning behavior in D. triangulatea.
Sensilla numbers and antennal morphology of parasitic and non-parasitic bees (Hymenoptera : Apoidea)
- W. Wcislo
Compared antennal forms and sensilla of 114 species of bees, representing all major lineages, were compared to ascertain the relationship between sensory structures and behavior, finding similarities in search behavior of males (both parasitic and non-parasitic) and parasitic females, which in general may be more dependent on longer-range olfactory cues.