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Spectral sensitivity and purkinje shift in the retina of the lemon shark negaprion brevirostris


, : Spectral sensitivity and purkinje shift in the retina of the lemon shark negaprion brevirostris. Vision Research 17(7): 787-792

Spectral sensitivity of the lemon shark, N. brevirostris, was determined using the ERG [electroretinogram] 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 .lambda.max [wavelength for maximum absorption] 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. There may be a cone input influencing scotopic spectral sensitivity.

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Accession: 006459850

PMID: 898685

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Related references

Cohen, J.L.; Gruber, S.H., 1977: Spectral sensitivity and Purkinje shift in the retina of the lemon shark, Negaprion brevirostris (Poey). Spectral sensitivity of the lemon shark, N. brevirostris, was determined using the ERG [electroretinogram] from the intact animal under scotopic and photopic conditions. A Purkinje shift was found upon moderate light adaptation. The peak of the sc...

Gruber, S.H., 1963: Cones In The Retina Of The Lemon Shark (Negaprion Brevirostris). Vision Research 61: 397-399

Cohen J.L.; Gruber S.H., 1985: Spectral input to lemon shark negaprion brevirostris ganglion cells. Extracellular recordings have been made from ganglion cells of the lemon shark retina: ON, OFF and ON-OFF units were recorded. Spectral sensitivity measurements under dark-adapted conditions reveal a .lambda.max of 519-522 nm. This may be due to 2...

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Cohen, JL., 1980: Functional organization of the retina of the lemon shark (Negaprion brevirostris, Poey): an anatomical & electrophysiological approach. Dissertation Abstracts International B Sciences and Engineering, 414: 1201-1202

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Motta, P.J.; Wilga, C.A.D., 1995: Anatomy of the feeding apparatus of the lemon shark, Negaprion brevirostris. The anatomy of the feeding apparatus of the lemon shark, Negaprion brevirostris, is investigated by gross dissection, computer axial tomography, and histological staining. The muscles and ligaments of the head associated with feeding are described...

Cohen, Joel L., 1990: Adaptations for scotopic vision in the lemon shark (Negaprion brevirostris). The Journal of Experimental Zoology supp5 : 84