Development of a Commercially Viable Cod and Haddock Aquaculture Industry in New England
|Steven Seretelli||University of Rhode Island|
|Amy Lapolla||University of Rhode Island|
|Myron Peck||University of Rhode Island|
|Elizabeth Fairchild||UNH - Department of Biological Sciences|
|Heather Hamlin||University of Maine|
|Bradd Baskerville-Bridges||University of Maine|
|C. Chatham||University of Maine|
|Nicholas J. King||UNH - Department of Biological Sciences|
|Deborah Ann Bidwell||UNH - Department of Biological Sciences|
|Robert Krauss||University of Rhode Island|
1) To maintain and manipulate cod and haddock broodstock
2) To prolong cod and haddock embryonic development
3) To assess juvenile diets
4) To develop and test microparticulate diets
5) To determine effects of DHA/EPA ratios and lecithin in diets
6) To test two different start-feeding diets
7) To test two different larval rearing systems
8) To determine the efficacy of feeding wild zooplankton
Broodstock cod and haddock will be collected aboard commercial fishing vessels. Photoperiod will be used to manipulate spawning cycles, and very low incubation temperatures will be used to prolong the development of some embryos. These two techniques, in combination, will ensure the availability of experimental embryos and larvae over most of the year.
A number of microparticulate weaning diets will be formulated based on the known nutritional requirements of marine fish larvae, and several formulated juvenile diets, designed for other species, will be purchased from manufacturers. All formulated diets will be assayed in feeding trials, with growth and survival used to determine diet effectiveness.
Two start-feeding diets (wild zooplankton and cultured zooplankton) will also be tested in feeding trials. Again, survival and growth will be used to judge effectiveness. Two larval rearing systems (semi-intensive and intensive) will also be evaluated by simultaneously rearing identical fish in both systems, and determining which provides the best growth and survival. The efficacy of using wild zooplankton as a start-feeding diet will be determined by the quantity and quality of available wild plankton, and the performance (growth and survival) of the fish fed this diet.
Marine finfish aquaculture has the potential to provide both high quality, fresh fish to the market, and career opportunities for displaced commercial harvesters. For a number of reasons, the two most prominent candidate species for commercial aquaculture in the Northeast U.S. are cod (Gadus morhua) and haddock (Melanogramus aeglefinus). The major biological impediments in New England include lack of information on broodstock collection and management, larval rearing systems, and first-feeding, weaning and juvenile diets. In this proposal we develop a coordinated research project designed to facilitate the development of cod and/or haddock aquaculture industries in New England.
Available from the National Sea Grant Library (use NHU number to search) or NH Sea Grant
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