Spectral sensitivity and purkinje shift in the retina of the lemon shark, Negaprion brevirostris (Poey)

Joel L. Cohen; Samuel H. Gruber; Duco I. Hamasaki

doi:10.1016/0042-6989(77)90120-1

Spectral sensitivity and purkinje shift in the retina of the lemon shark, Negaprion brevirostris (Poey)

Joel L. Cohen, Samuel H. Gruber, Duco I. Hamasaki

Marine Biology and Fisheries

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Spectral sensitivity of the lemon shark, Negaprion brevirostris (Poey), was determined using the ERG from the intact animal under scotopic and photopic conditions. A Purkinje shift was found upon moderate light adaptation. The peak of the scotopic spectral sensitivity function did not match the λ_max of the pigment. Recordings from the isolated retina and eyecup preparation were made to see if the pre-retinal media or tapetum lucidum influenced spectral sensitivity. Only the tapetum had a slight effect. We hypothesize the presence of a cone input influencing scotopic spectral sensitivity.

Original language	English (US)
Pages (from-to)	787-792
Number of pages	6
Journal	Vision Research
Volume	17
Issue number	7
DOIs	https://doi.org/10.1016/0042-6989(77)90120-1
State	Published - 1977

ASJC Scopus subject areas

Ophthalmology
Sensory Systems

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AB - Spectral sensitivity of the lemon shark, Negaprion brevirostris (Poey), was determined using the ERG from the intact animal under scotopic and photopic conditions. A Purkinje shift was found upon moderate light adaptation. The peak of the scotopic spectral sensitivity function did not match the λmax of the pigment. Recordings from the isolated retina and eyecup preparation were made to see if the pre-retinal media or tapetum lucidum influenced spectral sensitivity. Only the tapetum had a slight effect. We hypothesize the presence of a cone input influencing scotopic spectral sensitivity.

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Spectral sensitivity and purkinje shift in the retina of the lemon shark, Negaprion brevirostris (Poey)

Abstract

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