Rhopalium development in Aurelia aurita ephyrae
Rhopalia of developing ephyrae were examined using the SEM and TEM at 24 h intervals following strobilation induction. Kinocilia are shorter in the ephyra stage than in polyps. A few ephyra-type kinocilia are found in rhopalia as early as 24 h after induction, before a distinct rhopalium is seen....
| Veröffentlicht in: | Hydrobiologia. - 1989. - 216-217(1991) vom: 28. Juni, Seite 45-9 |
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| 1. Verfasser: | |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1991
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| Zugriff auf das übergeordnete Werk: | Hydrobiologia |
| Schlagworte: | Journal Article Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. NASA Discipline Developmental Biology NASA Discipline Number 00-00 NASA Discipline Number 40-20 NASA Program Flight NASA Program Space Biology Non-NASA Center |
| Zusammenfassung: | Rhopalia of developing ephyrae were examined using the SEM and TEM at 24 h intervals following strobilation induction. Kinocilia are shorter in the ephyra stage than in polyps. A few ephyra-type kinocilia are found in rhopalia as early as 24 h after induction, before a distinct rhopalium is seen. By 72 h, the shorter kinocilia predominate and are almost as numerous as in ephyrae (120 h). Many of the kinocilia are associated with mechanoreceptor cells (MR) found in the rhopalia. These MR cells are compared to those reported for medusae. Although newly released ephyrae lack a touch plate, the MR cells in their rhopalia along with the statocyst and neuromuscular system apparently enable these organisms to detect and respond to gravity |
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| Beschreibung: | Date Completed 20.09.1995 Date Revised 27.10.2019 published: Print Citation Status MEDLINE |
| ISSN: | 0018-8158 |