An unexpected diversity of photoreceptor classes in the Longfin squid, Doryteuthis pealeii
Kingston, Alexandra C. N.
Wardill, Trevor J.
Hanlon, Roger T.
Cronin, Thomas W.
MetadataShow full item record
KeywordExtraocular photoreceptors; Phototransduction; Light detection; Opsin; Retinochrome; Parolfactory vesicles
Cephalopods are famous for their ability to change color and pattern rapidly for signaling and camouflage. They have keen eyes and remarkable vision, made possible by photoreceptors in their retinas. External to the eyes, photoreceptors also exist in parolfactory vesicles and some light organs, where they function using a rhodopsin protein that is identical to that expr essed in the retina. Furthermore, dermal chromatophore organs contain rhodopsin and other components of phototransduction (including retinochrome, a photoisomerase first found in the retina), suggesting that they are photoreceptive. In this study, we used a modified whole - mount immunohistochemical technique to explore rhodopsin and retinochrome expression in a number of tissues and organs in the longfin squid, Doryteuthis pealeii. We found that fin central muscles, hair cells (epithelial primary sensory neu rons), arm axial ganglia, and sucker peduncle nerves all express rhodopsin and retinochrome proteins. Our findings indicate that these animals possess an unexpected diversity of extraocular photoreceptors and suggest that extraocular photoreception using v isual opsins and visual phototransduction machinery is far more widespread throughout cephalopod tissues than previously recognized.
Data are arranged into 12 Zip files, one for each figure (Figures 1 - 6) and one for each supporting figure (S1 - 6). Each Zip file includes the original images used for figures and supporting figures. Scale bars in all figures and supporting figures are 25μ
Suggested CitationDataset: Kingston, Alexandra C. N., Wardill, Trevor J., Hanlon, Roger T., Cronin, Thomas W., "An unexpected diversity of photoreceptor classes in the Longfin squid, Doryteuthis pealeii", 2015-07-10, DOI:10.1575/1912/7383, https://hdl.handle.net/1912/7383
The following license files are associated with this item:
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 3.0 United States
Showing items related by title, author, creator and subject.
Prolonged calcium influx after termination of light-induced calcium release in invertebrate photoreceptors Gomez, Maria del Pilar; Nasi, Enrico (Rockefeller University Press, 2009-08-31)In microvillar photoreceptors, light stimulates the phospholipase C cascade and triggers an elevation of cytosolic Ca2+ that is essential for the regulation of both visual excitation and sensory adaptation. In some organisms, ...
Dissecting the determinants of light sensitivity in amphioxus microvillar photoreceptors : possible evolutionary implications for melanopsin signaling Ferrer, Camilo; Malagon, Gerardo; Gomez, Maria del Pilar; Nasi, Enrico (Society for Neuroscience, 2012-12-12)Melanopsin, a photopigment related to the rhodopsin of microvillar photoreceptors of invertebrates, evolved in vertebrates to subserve nonvisual light-sensing functions, such as the pupillary reflex and entrainment of ...
Melanopsin-expressing amphioxus photoreceptors transduce light via a phospholipase C signaling cascade Angueyra, Juan Manuel; Pulido, Camila; Malagon, Gerardo; Nasi, Enrico; Gomez, Maria del Pilar (Public Library of Science, 2012-01-03)Melanopsin, the receptor molecule that underlies light sensitivity in mammalian ‘circadian’ receptors, is homologous to invertebrate rhodopsins and has been proposed to operate via a similar signaling pathway. Its downstream ...