Histochemical demonstration of a rhodopsin-like substance in the eye of the arrow-worm, Spadella schizoptera (Chaetognatha).

Abstract

The presumed photoreceptive region of the arrow-worms of the species Sagitta crassa and Spadella schizoptera consists of perforated lamellae which are unique as the photoreceptive structure. The existence of a visual pigment in this region was demonstrated by a histofluorescent technique using Spadella schizoptera, whose presumed photoreceptive region was much larger than in Sagitta crassa. A specific fluorescence, indicative of the presence of retinal-based proteins, appeared only in the perforated lamellar region. The result suggests that the perforated lamellae contain a rhodopsin-like substance and could be the primary photoreceptive site.

Cite this paper

@article{Goto1988HistochemicalDO, title={Histochemical demonstration of a rhodopsin-like substance in the eye of the arrow-worm, Spadella schizoptera (Chaetognatha).}, author={Takahisa Goto and Michihiro C. Yoshida}, journal={Experimental biology}, year={1988}, volume={48 1}, pages={1-4} }