Lamprey vision: Photoreceptors and organization of the retina

Nov 13, 2019Seminars in cell & developmental biology

Lamprey Vision: Light-Sensing Cells and Retina Structure

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Circadian BiologyCircadian Biology on OpenScience ↗PubMed ↗DOI ↗

Abstract

The lamprey, an agnathan vertebrate that split from other vertebrates 500 million years ago, exhibits similarities in phototransduction with other vertebrates.

  • Rod and cone photoreceptors in lamprey share remarkable biochemical and physiological similarities with those in mammals.
  • The fundamental mechanism of light sensation likely emerged very early in vertebrate evolution during the late Cambrian.
  • Some retinal characteristics are similar across vertebrates and may reflect ancient traits, while others differ significantly.
  • Differences in ganglion cell morphology between lamprey and other vertebrates could offer insights into diverse visual detection mechanisms.

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