Visual pigments, cone oil droplets and ocular media in four species of estrildid finch

Hart, N. S., Partridge, J. C., Bennett, A. T. D. and Cuthill, I. C. 2000, Visual pigments, cone oil droplets and ocular media in four species of estrildid finch, Journal of comparative physiology a-sensory neural and behavioral physiology, vol. 186, no. 7-8, pp. 681-694.


Title Visual pigments, cone oil droplets and ocular media in four species of estrildid finch
Author(s) Hart, N. S.
Partridge, J. C.
Bennett, A. T. D.
Cuthill, I. C.
Journal name Journal of comparative physiology a-sensory neural and behavioral physiology
Volume number 186
Issue number 7-8
Start page 681
End page 694
Publisher Springer
Place of publication Berlin, Germany
Publication date 2000-09
ISSN 0340-7594
1432-1351
Keyword(s) colour vision
microspectrophotometry
photoreceptor
retina
bird
Summary A microspectrophotometric study was conducted on the retinal photoreceptors of four species of bird: cut-throat finches (Amadina fasciata), gouldian finches (Erythrura gouldiae), white-headed munias (Lonchura maja) and plum-headed finches (Neochmia modesta). Spectral characteristics of the photoreceptors in all four species were very similar. Rods contained a medium-wavelength-sensitive visual pigment with a wavelength of maximum absorbance at 502-504 nm. Four spectrally distinct types of single cone contained a visual pigment with wavelength of maximum absorbance at either 370-373 nm (ultraviolet-sensitive), 440-447 nm (short-wavelength-sensitive); 500 nm (medium-wavelength-sensitive) or 562-565 nm (long-wavelength-sensitive). Oil droplets in the ultraviolet-sensitive single cones showed no detectable absorption between 330 nm and 800 nm. Oil droplets in the short-, medium-, and long-wavelength-sensitive single cones had cut-off wavelengths at 415-423 nm, 510-520 nm and 567-575 nm, respectively. Double cones contained the visual pigment with wavelength of maximum absorbance at 562-565 nm observed in long-wavelength-sensitive single cones. Only the principal member of the double cone pair contained an oil droplet (P-type, cut-off wavelength at 414-489 nm depending on species and retinal location). Spectral transmittance of the intact ocular media of each species was measured along the optic axis. Wavelengths of 0.5 transmittance for all species were very similar (316-318 nm).
Language eng
Field of Research 059999 Environmental Sciences not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2000, Springer-Verlag
Persistent URL http://hdl.handle.net/10536/DRO/DU:30022772

Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 48 times in TR Web of Science
Scopus Citation Count Cited 46 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 329 Abstract Views  -  Detailed Statistics
Created: Thu, 28 Jan 2010, 10:09:41 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.