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Trials on Pacific oyster (Crassostrea gigas Thunberg) rearing in the middle Adriatic Sea by means of different trays
Roncarati, A.; Felici, A.; Dees, A.; Forlini, L.; Melotti, P. (2010). Trials on Pacific oyster (Crassostrea gigas Thunberg) rearing in the middle Adriatic Sea by means of different trays. Aquacult. Int. 18(1): 35-43
In: Aquaculture International. Springer: London. ISSN 0967-6120, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Roncarati, A.
  • Felici, A.
  • Dees, A.
  • Forlini, L.
  • Melotti, P.

Abstract
    The aim of this study was to compare the growth of juvenile Pacific oysters (mean weight 2.22 g; mean length 26.8 mm) reared with the suspended technique using three different types of trays fixed to long lines at a mussel farm located in the middle Adriatic Sea. Growth, mortality rate and quality traits of oysters cultured in a new type of tray (EXP) were compared to those of specimens reared in conventional trays (CON) and in “poches” (POC). Culture density was fixed at 0.03 oysters cm−2 in all the tray types. After 11 months of growth, oysters reared in all the tray types reached marketable size, weighing between 94.08 and 110 g without significant differences. Length (98.8–103.3 mm), width (61.1–70.5 mm) and height (31.6–34.1 mm) did not show significant variations. The condition index showed differences among EXP (93.17%) compared to CON (81%) and POC oysters (72.87%), and significant differences were found between those reared at the surface and the bottom, regardless of tray type. Concerning mortality, the EXP group (7.5%) recorded significantly smaller losses than CON (18.4%) trays and POC (31.6%).

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