Retinal Topography in Reef Teleosts. II. Some Species with Prominent Horizontal Streaks and High-Density Areae

Shaun Patrick Collin, J. D. Pettigrew

    Research output: Contribution to journalArticle

    Abstract

    The retinal ganglion cell layer of five species of reef teleosts was studied from Nissl-stained whole-mounts and the distribution of neural elements determined quantitatively. Iso-density contour maps of neurons in the ganglion cell layer revealed a temporal area centralis (ranging from 3.5 to 8.3 x 104 cells/mm2) which often extended into a horizontal streak (ranging from 1.4 to 5.0 x 104 cells/mm2) across the retinal meridian. Species possessing a marked horizontal streak were found to inhabit open water and perceive their environment with an uninterrupted view of sand-water horizon. The behavioural significance of these horizontal areas of acute vision is also discussed.
    Original languageEnglish
    Pages (from-to)283
    Number of pages295
    JournalBrain, Behaviour and Evolution
    Volume31
    DOIs
    Publication statusPublished - 6 Feb 1988

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