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Spatial resolution ...
Spatial resolution and sensitivity of the eyes of the stingless bee, Tetragonula iridipennis
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- Jezeera, M. Asmi (author)
- Indian Institute of Science Education and Research, Thiruvananthapuram
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- Tichit, Pierre (author)
- Stockholm University,Lunds universitet,Stockholms universitet,Zoologiska institutionen,Lund University, Sweden,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups
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- Balamurali, G. S. (author)
- Indian Institute of Science Education and Research, Thiruvananthapuram
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- Baird, Emily (author)
- Stockholm University,Stockholms universitet,Zoologiska institutionen
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- Kelber, Almut (author)
- Lund University,Lunds universitet,Syngruppen,Forskargrupper vid Lunds universitet,Lund Vision Group,Lund University Research Groups
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- Somanathan, Hema (author)
- Indian Institute of Science Education and Research, Thiruvananthapuram
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(creator_code:org_t)
- 2021-11-05
- 2022
- English.
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In: Journal of Comparative Physiology A. Sensory, neural, and behavioral physiology. - : Springer Science and Business Media LLC. - 0340-7594 .- 1432-1351. ; 208:2, s. 225-238
- Related links:
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Subject headings
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- Stingless bees are important pollinators in the tropics. The tremendous variation in body size makes them an excellent group to study how miniaturization affects vision and visual behaviours. Using direct measurements and micro-CT, we reconstructed the eye structure, estimated anatomical spatial resolution and optical sensitivity of the stingless bee Tetragonula iridipennis. T. iridipennis is similar in size to the Australian stingless bee Tetragonula carbonaria and is smaller than honeybees. It has correspondingly small eyes (area = 0.56 mm2), few ommatidia (2451 ± 127), large inter-facet (3.0 ± 0.6°) and acceptance angles (2.8°). Theoretical estimates suggest that T. iridipennis has poorer spatial resolution (0.17 cycles degree−1) than honeybees, bumblebees, and T. carbonaria. Its optical sensitivity (0.08 µm2 sr), though higher than expected, is within the range of diurnal bees. This may provide them with greater contrast sensitivity, which is likely more relevant than the absolute sensitivity in this diurnal bee. Behaviourally determined detection thresholds for single targets using y-maze experiments were 11.5° for targets that provide chromatic contrast alone and 9.1° for targets providing chromatic and achromatic contrast. Further studies into microhabitat preferences and behaviour are required to understand how miniaturization influences its visual ecology.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Keyword
- Apidae
- Micro-CT
- Social bees
- Tropical bees
- Visual ecology
- Apidae
- Micro-CT
- Social bees
- Tropical bees
- Visual ecology
Publication and Content Type
- ref (subject category)
- art (subject category)
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