Micronecton en Méditerranée occidentale et proche Atlantique : données quantitatives et comparaisons. Les eaux méditerranéennes en Atlantique nord-est et la migration estivale des jeunes germons (Thunnus alalunga), corrélations apparentes

1 - The authors study and compare the biovolumes of 69 samples taken with the Isaacs-Kidd midwater trawl during the Polymède expedition on the N. O. "Jean Charcot" (May and June, 1970) in the western Mediterranean and in the vicinity of Cap Finisterre. 2 - The authors, having assembled the measurements of physical oceanographers, have prepared a diagram of the deep-current issuing from the Mediterranean into the Atlantic North- East. It is possible to superimpose on this diagram the route used by the young albacore (Thunnus alalunga) during their annual summer migration. This correspondance suggests an inter-relation between the two phenomena provided by intermediate trophic levels. [NOT CONTROLLED OCR]