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Spectral sensitivity of photoreceptors in an Australian marsupial, the tammar wallaby (Macropus eugenii)

Hemmi, Jan; Maddess, Ted; Mark, R F

Description

Microspectrophotometric measurements on the rod photoreceptors of the tammar wallaby showed that they have a peak absorbance at 501 nm. This indicates that macropod marsupials have a typical mammalian rhodopsin. An electroretinogram-based study of the photoreceptors confirmed this measurement and provided clear evidence for a single middle wavelength-sensitive cone pigment with a peak sensitivity at 539 nm. The electroretinogram did not reveal the presence of a short-wavelength-sensitive cone...[Show more]

dc.contributor.authorHemmi, Jan
dc.contributor.authorMaddess, Ted
dc.contributor.authorMark, R F
dc.date.accessioned2015-12-13T23:15:43Z
dc.identifier.issn0042-6989
dc.identifier.urihttp://hdl.handle.net/1885/89023
dc.description.abstractMicrospectrophotometric measurements on the rod photoreceptors of the tammar wallaby showed that they have a peak absorbance at 501 nm. This indicates that macropod marsupials have a typical mammalian rhodopsin. An electroretinogram-based study of the photoreceptors confirmed this measurement and provided clear evidence for a single middle wavelength-sensitive cone pigment with a peak sensitivity at 539 nm. The electroretinogram did not reveal the presence of a short-wavelength-sensitive cone pigment as was expected from behavioural and anatomical data. Limitations of the electroretinogram in demonstrating the presence of photopigments are discussed in relation to similarly inconsistent results from other species.
dc.publisherPergamon-Elsevier Ltd
dc.sourceVision Research
dc.subjectKeywords: rhodopsin; visual pigment; animal experiment; animal tissue; article; electroretinogram; female; in vitro study; male; marsupial; microspectrophotometry; nonhuman; photoreceptor; priority journal; spectral sensitivity; Animals; Electroretinography; Macrop Cones; Electroretinogram (ERG); Microspectrophotometry (MSP); Rods; Vision
dc.titleSpectral sensitivity of photoreceptors in an Australian marsupial, the tammar wallaby (Macropus eugenii)
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume40
dc.date.issued2000
local.identifier.absfor110906 - Sensory Systems
local.identifier.ariespublicationMigratedxPub18922
local.type.statusPublished Version
local.contributor.affiliationHemmi, Jan, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationMaddess, Ted, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationMark, R F, College of Medicine, Biology and Environment, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage591
local.bibliographicCitation.lastpage599
local.identifier.doi10.1016/S0042-6989(99)00210-2
dc.date.updated2015-12-12T08:44:48Z
local.identifier.scopusID2-s2.0-0033966069
CollectionsANU Research Publications

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