Comportement de Crassostrea angulata Lmk. sous des conditions experimentales de milieu. Resistance aux basses salinites.

Portuguese oysters, C. angulata from brood ponds at Arcachon (salinity 27-28ppt) were exposed to lowered salinities and their valve activity continuously recorded. Down to 2 ppt, normal activity was resumed within 24 hours, between 8 and 11%, oysters, survived and adapted slowly, below 8%, oysters died. Sexually mature oysters are more susceptible and may die at 10 to 8% salinity, perhaps because the gonad is full of gametes. Oysters from different localities probably respond differently to changed salinity.

Auteurs du document :

His, Edouard

Obtenir le document :

ISTPM

Mots clés :

Arcachon, Salinities, Crassostrea angulata, Portuguese oysters

Thème (issu du Text Mining) :

MILIEU NATUREL, INFORMATION - INFORMATIQUE

Date :

1972-03

Format :

text/xml