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Article: Nursery-phase culture of green sea urchin Strongylocentrotus droebachiensis using "on-bottom" cages.(Report)
- Article from:
- Journal of Shellfish Research
- Article date:
- August 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 National Shellfisheries Association, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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ABSTRACT Sea urchin hatchery techniques are well established, but cost effective grow-out strategies are still under development. Juvenile green sea urchins (Strongylocentrotus droebaehiensis) with a test diameter of less than 15 mm are vulnerable to predation when released into the wild and mortality can be high; therefore a protected nursery phase is required. This study investigated the feasibility of a cost effective on-bottom nursery cage system to provide protection at this stage. Wild-caught juvenile urchins (average diameter 7.93 [+ or -] 0.65 mm) were held in specially designed high-density polyethylene (HDPE) mesh tubes, 50 per tube, at two lease sites in ...