Publication: Fine structure of the retina of black bass, Micropterus salmoides. Centrarchidae, Teleostei
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Date
1999
Authors
García, M. ; De Juan, J.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
The structure of light- and dark-adapted
retina of the black bass, Micropterus salmoides has been
studied by light and electron microscopy. This retina
lacks blood vessels at all levels. The optic fiber layer is
divided into fascicles by the processes of Miiller cells
and the ganglion cell layer is represented by a single row
of voluminous cells. The inner nuclear layer consists of
two layers of horizontal cells and bipolar, amacrine and
interplexiform cells. In the outer plexiform layer we
observed the synaptic terminals of photoreceptor cells,
rod spherules and cone pedicles and terminal processes
of bipolar and horizontal cells. The spherules have a
single synaptic ribbon and the pedicles possess multiple
synaptic ribbons. Morphologically, we have identified
three types of photoreceptors: rods, single cones and
equal double cones which undergo retinomotor
movements in response to changes in light conditions.
The cones are arranged in a square mosaic whereas the
rods are dispersed between the cones.
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