Data/hora: 02/06/2024 03:46:14

Provedor de dados: 	Institutional Archive of Ifreme (ArchiMer)	
País: 	France	
Título: 	Activite mecanique comparee des huitres portugaises et des Ciones, Epibiontes.	
Autores: 	Le Borgne-david, A.	
Data: 	1972-03	
Ano: 	1972	
Palavras-chave: 	Stimulation; Rhythm; Temperature; Crassostrea angulata; Portuguese oyster.	
Resumo: 	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.	
Tipo: 	Text	
Idioma: 	Francês	
Identificador: 	http://archimer.ifremer.fr/doc/1972/publication-2052.pdf	
Editor: 	ISTPM	
Relação: 	http://archimer.ifremer.fr/doc/00000/2052/	
Formato: 	application/pdf	
Fonte: 	Revue des Travaux de l'Institut des Pêches Maritimes (0035-2276) (ISTPM), 1972-03 , Vol. 36 , N. 3 , P. 285-291	
Fonte: 	Ifremer