title: [Infrastructural study of photoreceptor organs in the larvae of two Syllidae (Annelida, Polycheta)].
abstract: The ultrastructure of the larval eyes of two Syllidae: Syllis amica (subfamily: Syllinae) and Odontosyllis ctenostoma (subfamily: Eusyllinae) were studied. These eyes are composed of a pigmented supportive cell and one or two sensory cells. A dense body, corresponding to a secreted lens, can be observed in the ocular cavity formed by the supportive cell. Such a structure present in O. ctenostoma adult eyes has never been described in S. amica adult eyes.
mesh_terms: D000818:Animals; D000845:Annelida / Q000502:physiology / Q000648:ultrastructure*; D007814:Larva / Q000648:ultrastructure; D008854:Microscopy, Electron; D010786:Photoreceptor Cells / Q000502:physiology / Q000648:ultrastructure*
vernacular_title: Etude infrastructurale des organes photorécepteurs chez les larves de deux Syllidiens (Annélides, Polychètes).