Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Retinal Resolving Power and Sensitivity of the Photopic System in Seven Haplochromine Species (Teleostei, Cichlidae)

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

Retinal parameters of the photopic system are determined in seven adult haplochromine cichlids. Resolving power is calculated as a function of the density of the twin-cones and the size of the eye-lens. The size of the twin-cones is considered to be a useful criterion to compare their sensitivity. Intra-retinal variation of the resolving power shows a negative correlation with the variation of the sensitivity of the photopic system. Interspecific variation of the resolving power and the sensitivity both show a positive correlation with the absolute eye-size. A maximum packing of the cones is approached in the examined species, except in Haplochromis microdon. Variation of the resolving power is discussed in relation with the theoretical value of the optical resolving power as calculated by OTTEN (1981). The significance of this variation is correlated with ecological data.

Affiliations: 1: Research- Group Ecological Morphology, Zoölogisch Laboratorium, University of Leiden, Postbus 9516, 2300 RA Leiden, The Netherlands


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Netherlands Journal of Zoology — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation