| Autre(s) titre(s) |
Comparative mechanical activity of Portuguese oysters and epibiont sea-squirts. |
| Type |
Article |
| Date |
1972-03 |
| Langue(s) |
Français |
| Auteur(s) |
Le Borgne-David A |
| Source |
Revue des Travaux de l'Institut des Pêches Maritimes (0035-2276) (ISTPM), 1972-03 , Vol. 36 , N. 3 , P. 285-291 |
| Keyword(s) |
Stimulation, Rhythm, Temperature, Crassostrea angulata, Portuguese oyster |
| Résumé en anglais |
The Portuguese oyster (Crassostrea angulata) and the sea-squirt Ciona intestinalis are both filter-feeders and compete for space in the oyster beds. Valve movement in oysters and shortening and elongation in Ciona were recorded on a smoked drum. Oysters showed a slow (3 one half min) spontaneous opening/closing rhythm, which was speeded up by stimulatory (vitamin) substances and increased in amplitude by toxic accumulated waste substances, or sudden change in temperature. Ciona showed a regular contraction rhythm of similar to 1 min and single sharp shortening after a strong light stimulus or a food particle touch stimulus to the oral tentacles. The neural ganglion discharges spikes 3 times faster than in the dark, after light stimulation. Filtration rates of the 2 organisms seem to be similar. |
| Texte intégral |
| Fichier |
Pages |
Taille |
Accès |
| publication-2052.pdf |
7 |
448 KB |
Libre accès |
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