SEASONAL VARIATIONS ON THE BIOCHEMICAL COMPOSITION AND LIPID CLASSES OF THE GONADAL AND STORAGE TISSUES OF CRASSOSTREA GIGAS (THUNBERG, 1794) IN RELATION TO THE GAMETOGENIC CYCLE

Variations in biochemical composition and lipid classes in relations to the gametogenic cycle were studied in digestive gland, labial palps and gonad in the Pacific oyster Crassostrea gigas from the Western Atlantic coast of France over 1 y. Variations in the weight of the soft body parts, gonad development and spawning depended on environmental conditions, mainly on nutrients availability. The main energy reserve is the glycogen, showing a...