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Project
Title: Finfish
Hatchery and Marine Education Center
PIs: Brandy
M.M. Wilbur,
MIT Sea Grant; Clifford Goudey, MIT Sea Grant
Project Website: http://web.mit.edu/seagrant/edu/hatchery/
Project
Summary: Farm raising fish
for consumption is not a new concept, but there are not
many marine fish species that are commercially available.
MIT Sea Grant recognized the need to aid in the development
of aquaculture in Massachusetts and started a Boston Aquaculture
Initiative Program to deal with these issues. In January
of 1998, MIT Sea Grant's Marine Finfish Hatchery began
operation in the Charlestown Navy Yard. In 2003, the hatchery
moved north to our new aquaculture facility, located at
the Gloucester Maritime Heritage Center. |
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Aquaculture at the MIT Sea Grant Finfish Hatchery
Gloucester
Maritime Heritage Center
All About
Aquaculture
Fish Life
Cycle
Species raised
at the Finfish Hatchery Table Top Recirculating System
Facilities
overview
Systems
Overview
The
hatchery consists of two independent culture systems, six 100-gallon
hatching/larval-rearing tanks and two 500-gallon grow-out
tanks,
and a live feed culture room. Each system demonstrates state-of-the-art
recirculating technology. Harbor water is pumped in at high tide, if needed,
and filtered and aerated to keep excellent water quality. Initially
the
eggs are hatched in the hatching tanks and then the larvae
are fed a live feed diet consisting of zooplankton such as rotifers
and Artemia.
Eventually the fish are weaned onto a dry pellet feed that
promotes
growth.
The live feed culture room consists of 5 tanks and an Artemia
hatching cone. The tanks are used to culture rotifers and Aretmia
that are
fed to the larvae. The Artemia hatching cone is used to hatch
Artemia to feed the older larvae.
The hatching tanks house the fish from hatching until they
grow large enough to be weaned to a dry feed diet. The point
at which
the fish
are moved into the grow out systems is dependent on the fish’s
point in the life cycle, which is in turn dependent on the
size of the fish. The hatching tanks are dark so that the
amount of light
that gets into the tanks while the fish are hatching can
be controlled. State-of-the-art recirculating technology
is used
to filter the water
in the hatching tanks.
Once the larvae metamorphose into juveniles, they are weaned
onto a dry pellet diet that is commercially available and are
moved
from the larval tanks to the grow-out system. The grow-out tanks
are larger
and allow more space for the fish to grow. The water in the grow-out
tanks is filtered using state-of-the-art
recirculating technology.
Determining when the fish can handle these changes is key to
rearing a species not previously reared in captivity. The data
collected
from the hatchery (growth rates, weight, feed conversions, and
environmental conditions) will determine whether or not a particular
species has
commercial potential. The hatchery is involved in several research
projects related to the aquaculture industry.
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