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Ultraviolet photopigment sensitivity and ocular media transmittance in gulls, with an evolutionary perspective
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Physiology and Developmental Biology, Evolutionary Organism Biology. (Avian vision)
School of Biological Sciences, University of Bristol.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology. (Avian vision)
2009 (English)In: Journal of Comparative Physiology A. Sensory, neural, and behavioral physiology, ISSN 0340-7594, E-ISSN 1432-1351, Vol. 195, no 6, 585-590 p.Article in journal (Refereed) Published
Abstract [en]

Gulls (Laridae excluding Sternidae) appear to be the only shorebirds (Charadriiformes) that have a short wavelength sensitive type 1 (SWS1) cone pigment opsin tuned to ultraviolet (UV) instead of violet. However, the apparent UV-sensitivity has only been inferred indirectly, via the interpretation that the presence of cysteine at the key amino acid position 90 in the SWS1 opsin confers UV sensitivity. Unless the cornea and the lens efficiently transmit UV to the retina, gulls might in effect be similar to violet-sensitive birds in spectral sensitivity even if they have an ultraviolet sensitive (UVS) SWS1 visual pigment. We report that the spectral transmission of the cornea and lens of great black-backed Larus marinus and herring gulls L. argentatus allow UV-sensitivity, having a λ value, 344 nm, similar to the ocular media of UV sensitive birds. By molecular sequencing of the second α-helical transmembrane region of the SWS1 opsin gene we could also infer that 15 herring gulls and 16 yellow-legged gulls L. michahellis, all base-pair identical, are genetically UV-sensitive.

Place, publisher, year, edition, pages
2009. Vol. 195, no 6, 585-590 p.
Keyword [en]
Larus argentatus, Larus marinus, Larus michahellis, SWS1 opsin gene, Ocular media spectral transmittance
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-120019DOI: 10.1007/s00359-009-0433-8ISI: 000266584100006OAI: oai:DiVA.org:uu-120019DiVA: diva2:302189
Available from: 2010-03-04 Created: 2010-03-04 Last updated: 2010-07-27Bibliographically approved

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Håstad, OlleÖdeen, Anders

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