Rhabdom Changes in the Shrimp, Palaemonetes
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Cell Biology
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The fine structure of the principal compound eye of the shrimp, Palaemonetes, was studied under conditions of light and dark adaptation. Ommatidium the situation in other decapod crustaceans. Light and dark adapted eyes differ in that the rhabdom changes its shape; morphological evidence suggests a possible sequence of events involving production, utilization, and degradation of photoreceptor membrane, a discontinuous process occurring only during changes from light to dark and dark to light. A hypothesis of membrane turnover is proposed.
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