Nocturnal Vision and Landmark Orientation in a Tropical Halictid Bee

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Nocturnal Vision and Landmark Orientation in a Tropical Halictid Bee

BACKGROUND Some bees and wasps have evolved nocturnal behavior, presumably to exploit night-flowering plants or avoid predators. Like their day-active relatives, they have apposition compound eyes, a design usually found in diurnal insects. The insensitive optics of apposition eyes are not well suited for nocturnal vision. How well then do nocturnal bees and wasps see? What optical and neural a...

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Ocellar adaptations for dim light vision in a nocturnal bee.

Growing evidence indicates that insect ocelli are strongly adapted to meet the specific functional requirements in the environment in which that insect lives. We investigated how the ocelli of the nocturnal bee Megalopta genalis are adapted to life in the dim understory of a tropical rainforest. Using a combination of light microscopy and three-dimensional reconstruction, we found that the reti...

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Is Nocturnal Foraging in a Tropical Bee an Escape From Interference Competition?

Temporal niche partitioning may result from interference competition if animals shift their activity patterns to avoid aggressive competitors. If doing so also shifts food sources, it is difficult to distinguish the effects of interference and consumptive competition in selecting for temporal niche shift. Bees compete for pollen and nectar from flowers through both interference and consumptive ...

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Nocturnal bees learn landmark colours in starlight

Honeybees, like humans and most other vertebrates, are colour-blind in dim light. Bees are primarily day-active and have apposition compound eyes, the typical eye design of diurnal insects. Most bees are trichromats with photoreceptors sensitive in the UV, blue and green [1]. While their diurnal colour vision was established almost 100 years ago, honeybees are known to be colour-blind in moonli...

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Supplemental Data : Moving observers , relative retinal motion and the detection of object movement

References 1. Brooke, M.D., Hanley, S., and Laughlin, S.B. (1999). The scaling of eye size with body mass in birds. Proc. R. Soc. Lond. B. Biol. Sci. 266, 405–412. 2. Jander, U., and Jander, R. (2002). Allometry and resolution of bee eyes (Apoidea). Arth. Struct. Dev. 30, 179–193. 3. Land, M.F., and Nilsson, D.-E. (2001). Animal Eyes. (Oxford: Oxford University Press). 4. Warrant, E.J., Kelber,...

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ژورنال

عنوان ژورنال: Current Biology

سال: 2004

ISSN: 0960-9822

DOI: 10.1016/j.cub.2004.07.057