FLOW-THROUGH SYSTEMS FOR CULTURING GREAT SCALLOP LARVAE

S. Andersen, G. Burnell, Ø. Bergh-2000
Aquaculture International, 8 (2/3): 249-257
Abstract:
Rearing of great scallop (Pecten maximus L.) larvae was tested in static and flow-through systems in order to improve intensive rearing methods and avoid bacterial problems. The static systems were: standard 300 litre tanks (STD) and standard tanks supplied with an antibacterial agent (STD+A). The flow-through systems were: 500 l down-welling tanks (FLOW) and a 4700 l up-welling tank (SILO). Bacterial counts ranked the systems in the following order SILO < FLOW < STD+A < STD. In spite of low bacterial numbers, increased larval survival was not demonstrated in the FLOW system compared to the STD system. The highest survival on day 17 (>90%) and day 22 (52%) after fertilisation was obtained in the SILO system. The type of rearing system did not affect larval growth.

(Institute of Marine Research, Austevoll Aquaculture Research Station, N-5392 Storebø, Norway)
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