A spitting image: Specializations in archerfish eyes for vision at the interface between air and water

Temple, Shelby, Hart, Nathan S., Marshall, Justin N. and Collin, Shaun P. (2010) A spitting image: Specializations in archerfish eyes for vision at the interface between air and water. Proceedings of the Royal Society B - Biological Sciences, 227 1694: 2607-2615. doi:10.1098/rspb.2010.0345


Author Temple, Shelby
Hart, Nathan S.
Marshall, Justin N.
Collin, Shaun P.
Title A spitting image: Specializations in archerfish eyes for vision at the interface between air and water
Journal name Proceedings of the Royal Society B - Biological Sciences   Check publisher's open access policy
ISSN 0962-8452
1471-2954
Publication date 2010-09
Sub-type Article (original research)
DOI 10.1098/rspb.2010.0345
Volume 227
Issue 1694
Start page 2607
End page 2615
Total pages 9
Place of publication London, United Kingdom
Publisher The Royal Society Publishing
Collection year 2011
Language eng
Subject C1
170112 Sensory Processes, Perception and Performance
270502 Neurobiology
Abstract Archerfish are famous for spitting jets of water to capture terrestrial insects, a task that not only requires oral dexterity, but also the ability to detect small camouflaged prey against a visually complex background of overhanging foliage. Because detection of olfactory, auditory and tactile cues is diminished at air-water interfaces, archerfish must depend almost entirely on visual cues to mediate their sensory interactions with the aerial world. During spitting, their eyes remain below the water's surface and must adapt to the optical demands of both aquatic and aerial fields of view. These challenges suggest that archerfish eyes may be specially adapted to life at the interface between air and water. Using microspectrophotometry to characterize the spectral absorbance of photoreceptors, we find that archerfish have differentially tuned their rods and cones across their retina, correlated with spectral differences in aquatic and aerial fields of view. Spatial resolving power also differs for aquatic and aerial fields of view with maximum visual resolution (6.9 cycles per degree) aligned with their preferred spitting angle. These measurements provide insight into the functional significance of intraretinal variability in archerfish and infer intraretinal variability may be expected among surface fishes or vertebrates where different fields of view vary markedly. Copyright © The Royal Society 2011
Keyword Fish
Toxotes chatareus
Acuity
Colour vision
Opsin
Chromophore
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
Queensland Brain Institute Publications
School of Biomedical Sciences Publications
 
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Created: Mon, 12 Jul 2010, 11:37:31 EST by Bacsweet Kaur on behalf of School of Biomedical Sciences