Polarization sensitivity as a visual contrast enhancer in the Emperor dragonfly larva, Anax imperator
Journal of Experimental Biology, ISSN: 0022-0949, Vol: 218, Issue: 21, Page: 3399-3405
2015
- 16Citations
- 52Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations16
- Citation Indexes16
- 16
- CrossRef12
- Captures52
- Readers52
- 52
Article Description
Polarization sensitivity (PS) is acommon feature of invertebrate visual systems. In insects, PS is well known for its use in several different visually guided behaviours, particularly navigation and habitat search. Adult dragonflies use the polarization of light to find water but a role for PS in aquatic dragonfly larvae, a stage that inhabits a very different photic environment to the adults, has not been investigated. The optomotor response of the larvae of the Emperor dragonfly, Anax imperator Leach 1815, was used to determine whether these larvae use PS to enhance visual contrast underwater. Two different light scattering conditions were used to surround the larval animals: A naturalistic horizontally polarized light field and a non-naturalistic weakly polarized light field. In both cases these scattering light fields obscured moving intensity stimuli that provoke an optokinetic response in the larvae. Animals were shown to track the movement of a square-wave grating more closely when it was viewed through the horizontally polarized light field, equivalent to a similar increase in tracking ability observed in response to an 8% increase in the intensity contrast of the stimuli. Our results suggest that larval PS enhances the intensity contrast of a visual scene under partially polarized lighting conditions that occur naturally in freshwater environments.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84962850005&origin=inward; http://dx.doi.org/10.1242/jeb.122507; http://www.ncbi.nlm.nih.gov/pubmed/26385333; https://journals.biologists.com/jeb/article/doi/10.1242/jeb.122507/262104/Polarization-sensitivity-as-a-visual-contrast; https://dx.doi.org/10.1242/jeb.122507; https://jeb.biologists.org/content/218/21/3399; http://research-repository.uwa.edu.au/en/publications/polarization-sensitivity-as-a-visual-contrast-enhancer-in-the-emperor-dragonfly-larva-anax-imperator(69e542af-1f30-4c16-a31e-e379453736ff).html; https://research-repository.uwa.edu.au/en/publications/polarization-sensitivity-as-a-visual-contrast-enhancer-in-the-emp; http://jeb.biologists.org/content/218/21/3399; http://jeb.biologists.org/content/218/21/3399.abstract; http://jeb.biologists.org/content/218/21/3399.full.pdf; https://research-repository.uwa.edu.au/en/publications/polarization-sensitivity-as-a-visual-contrast-enhancer-in-the-emperor-dragonfly-larva-anax-imperator(69e542af-1f30-4c16-a31e-e379453736ff).html; http://jeb.biologists.org/lookup/doi/10.1242/jeb.122507; https://jeb.biologists.org/content/218/21/3399.abstract; https://jeb.biologists.org/content/jexbio/218/21/3399.full.pdf; http://jeb.biologists.org/cgi/doi/10.1242/jeb.122507; https://research-repository.uwa.edu.au/en/publications/69e542af-1f30-4c16-a31e-e379453736ff
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