EsturgeonV1, Main, Merge, bibRecord, 001901

An action spectrum for the light-dependent inhibition of swimming behavior in newly hatched white sturgeon, Acipenser transmontanus

Identifieur interne : 001901 ( Main/Merge ); précédent : 001900; suivant : 001902

An action spectrum for the light-dependent inhibition of swimming behavior in newly hatched white sturgeon, Acipenser transmontanus

Auteurs : E. R. Loew [États-Unis] ; A. J. Sillman [États-Unis]

Source :

Vision research : (Oxford) [ 0042-6989 ] ; 1998.

RBID : Pascal:98-0116288

Descripteurs français

Pascal (Inist)
- Nage, Locomotion, Animal nouveau né, Stimulus lumineux, Pigment visuel, Longueur onde, Sensibilité spectrale, Photorécepteur, Phototactisme, Vision, Etude en laboratoire, Acipenser transmontanus, Acipenseridae.

English descriptors

KwdEn :
- Acipenser transmontanus, Laboratory study, Light stimulus, Locomotion, Newborn animal, Photoreceptor, Phototaxis, Spectral sensitivity, Swimming, Vision, Visual pigment, Wavelength.

Abstract

Newly hatched white sturgeon (Acipenser transmontanus) yolk-sac larvae are negatively phototactic, photokinetic and geotactic-seeking cover in the substrate during daylight hours. If cover is unavailable and the light intensity is low, they move into the water column and alternate periods of rapid, upward swimming with periods of quiescence during which they sink. In the dark they swim almost continuously. A flash of light inhibits swimming activity totally for a period dependent on the light intensity. Using this observation, we obtained an action spectrum for swimming inhibition for 30 newly hatched larvae. This action spectrum is best fit by a single visual pigment with absorbance maximum at 537 nm. The lack of red sensitivity fits well with previous work showing that red-sensitive photoreceptor cells are absent in young sturgeon. The possible significance of red insensitivity is discussed from both ecological and practical standpoints.

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Pascal:98-0116288

Le document en format XML

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<orgName type="university">Université Cornell</orgName>
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<term>Newborn animal</term>
<term>Photoreceptor</term>
<term>Phototaxis</term>
<term>Spectral sensitivity</term>
<term>Swimming</term>
<term>Vision</term>
<term>Visual pigment</term>
<term>Wavelength</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Nage</term>
<term>Locomotion</term>
<term>Animal nouveau né</term>
<term>Stimulus lumineux</term>
<term>Pigment visuel</term>
<term>Longueur onde</term>
<term>Sensibilité spectrale</term>
<term>Photorécepteur</term>
<term>Phototactisme</term>
<term>Vision</term>
<term>Etude en laboratoire</term>
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<front><div type="abstract" xml:lang="en">Newly hatched white sturgeon (Acipenser transmontanus) yolk-sac larvae are negatively phototactic, photokinetic and geotactic-seeking cover in the substrate during daylight hours. If cover is unavailable and the light intensity is low, they move into the water column and alternate periods of rapid, upward swimming with periods of quiescence during which they sink. In the dark they swim almost continuously. A flash of light inhibits swimming activity totally for a period dependent on the light intensity. Using this observation, we obtained an action spectrum for swimming inhibition for 30 newly hatched larvae. This action spectrum is best fit by a single visual pigment with absorbance maximum at 537 nm. The lack of red sensitivity fits well with previous work showing that red-sensitive photoreceptor cells are absent in young sturgeon. The possible significance of red insensitivity is discussed from both ecological and practical standpoints.</div>
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An action spectrum for the light-dependent inhibition of swimming behavior in newly hatched white sturgeon, Acipenser transmontanus

An action spectrum for the light-dependent inhibition of swimming behavior in newly hatched white sturgeon, Acipenser transmontanus

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri