Immersed or non immersed oyster raising frame - has separate compartments for oysters and larvae with velvet covered plates

摘要

For raising the larvae of oysters a velvet material is supported in a semi closed structure. This structure has a section (A) in which the oysters are housed, and an adjacent section (B) with pockets (3) forming the larvae holders, each with the textile material supported by tubes, forming plates for easy handling. In the first section, the plates (1) are horizontal and in the second the pockets are vertical. Water can flow in and out along a linear or sinusoidal path. Inside the first section is a vertical supply tube (2) for sea water, with a deflector. In an alternative system, instead of circulating the sea water through tubes, the whole assembly is submerged, and the water passes through holes (9) in the bottom and a pumping system without supply tubes is used.