Publication Abstract

Role of feeding and sediment on the swimming activity of juvenile sole, Solea solea, settlement in experimental conditions

G. Champalbert, C. MacQuart-Moulin and B.R. Howell

Three types of experiments were carried out:- in horizontal rectangular tanks of different sizes and visual observations; - in shallow cylindrical tanks and video-recordings; - in vertical cylindrical transparent tanks set up with horizontal infrared barriers, connected with a computer giving automatic recordings during long duration experiments. Several types of sediments of bright and dark colors were tested: mud, fine sand, sand, fine gravel, coarse gravel and black or white hard bottom. Several types of food were given to the juveniles according to their size: pelagic food (alive Artemia nauplii) or benthic food (alive small polychaetes or freshly chopped pieces of nereids) was offered at different concentrations during the day and at night. Frozen food was also offered. No differential survival rate according to the substratum appeared from metamorphosis to juveniles 30 mm in length.

Reference:

G. Champalbert, C. MacQuart-Moulin and B.R. Howell, 1992. Role of feeding and sediment on the swimming activity of juvenile sole, Solea solea, settlement in experimental conditions. Oceanis, 18(1): 41-43.