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Showing posts from October, 2011

RESISP (Recirculation Semi Intensive Seed Production)

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SISP (Semi Intensive Seed Production) had problem which hard to estimate survival due to microalgae bloom, only we knew when dry up. Thus, I improved the system that copepoda culture tank connect to larva tank which shallower than copepoda tank and copepoda culture water recirculate between tanks to give enough feeds, copepoda and phytoplankton and maintain smiler water quality as copepoda tank. Figure of system and comparison among ISP (Intensive Seed Production), SISP and RESISP are below. Table revised on Oct.25.

Scallop seed production by SISP

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Raw see water was introduced in 20 tons cylinder tank at Arturo Prat University Marine Science laboratory in Iquique Chile in September 22, 2011. Agriculture fertilizers, nitrate 159 g and phosphate 27 g, were applied at 20 tons of water volume at Day 1. Sea water supplied daily at approximately 10 % water exchange rate. Phytoplankton were bloomed and water color turned to green. Copepoda observed at density of 0.2 ind/ml at Day 20. Scallop larvae (Day 1, 16 million approximately) stocked and installed juvenile collectors, 24 bags, at Day 21 in October 13.