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Buzz-pollination in Neotropical bees: genus-dependent frequencies and lack of optimal frequency for pollen release.
Insect Sci
February 2020
Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
Over 50 genera of bees release pollen from flower anthers using thoracic vibrations, a phenomenon known as buzz-pollination. The efficiency of this process is directly affected by the mechanical properties of the buzzes, namely the duration, amplitude, and frequency. Nonetheless, although the effects of the former two properties are well described, the role of buzz frequency on pollen release remains unclear.
View Article and Find Full Text PDFIn Response to Xylocopa tranquebarica Fatal Stinging by Kularatne et al.
Wilderness Environ Med
September 2016
University Hospital of Patras, Achaia, Greece.
Redundant species, cryptic host-associated divergence, and secondary shift in Sennertia mites (Acari: Chaetodactylidae) associated with four large carpenter bees (Hymenoptera: Apidae: Xylocopa) in the Japanese island arc.
Mol Phylogenet Evol
November 2008
Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cho, Sakyo, Kyoto 606-8501, Japan.
Sennertia mites live as inquilines in the nests of carpenter bees and disperse as deutonymphs on newly emerged adult bees. Because their life cycle is tightly linked to that of the host bees, Sennertia may diverge in response to speciation in the hosts. However, the majority of Sennertia species are associated with several closely related carpenter bees, suggesting that host speciation may not be reflected in mite genetic structure.
View Article and Find Full Text PDFSeeing in the dark: vision and visual behaviour in nocturnal bees and wasps.
J Exp Biol
June 2008
Department of Cell and Organism Biology, Zoology Building, University of Lund, Helgonavägen 3, S-22362 Lund, Sweden.
In response to the pressures of predation, parasitism and competition for limited resources, several groups of (mainly) tropical bees and wasps have independently evolved a nocturnal lifestyle. Like their day-active (diurnal) relatives, these insects possess apposition compound eyes, a relatively light-insensitive eye design that is best suited to vision in bright light. Despite this, nocturnal bees and wasps are able to forage at night, with many species capable of flying through a dark and complex forest between the nest and a foraging site, a behaviour that relies heavily on vision and is limited by light intensity.
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