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CA-02-01-004
Yellow perch (Perca flavescens): Broodstock, feed development
and commercial production
The yellow perch is a freshwater fish that is highly-prized for its firm,
white flesh. At present, yellow perch production in Canada comes mainly
from commercial fisheries; efficient culture methods for this species
have not been developed. The main objectives of this research are to study,
develop and improve yellow perch culture methods and transfer this technology
to the aquaculture sector. The main focus of the research is to develop
a genetically-diverse broodstock, optimize feeding and husbandry techniques,
and establish flesh quality guidelines. Our broodstock selection program
currently has 1400 adults (70 % female). Methods to improve handling of
broodstock, including hand spawning and egg incubation have been developed.
Egg hatching success has been improved but more work is needed to increase
feeding success and survival of the young. Research to determine optimum
rearing temperatures and the timing of the change from live feed to commercial
feeds is ongoing. High quality, nutrient dense, larval feeds have been
tested but improvements in feed delivery during the first six weeks after
hatch will require additional research. Variation in size is still quite
high and grow out experiments have been done by manipulating light and
grading to optimize growth. A recirculation system for intensive grow-out
is being tested. Although still in the early stages the yellow perch industry
considers intensive aquaculture using recirculation systems as the preferred
approach for grow out. Pond culture is being considered for fry (up to
7.5 cm in length) during the warmest summer months. To date, 9000 juvenile
yellow perch have been transferred to producers in Manitoba for grow-out.
Research is continuing on establishing industry guidelines on fillet quality,
and a fish processing facility is being established in rural Manitoba.
This research has made significant advances toward the development of
yellow perch as an economically-viable culture species and will accelerate
diversification in the Canadian aquaculture industry.
Project Start Date: April 1, 2002
Project Completion Date: March 31, 2005
For further information please contact: DFO project leader: Mike Papst
(E-mail: PapstM@dfo-mpo.gc.ca) or Regional ACRDP Coordinator: Doug
Geiling (E-mail: geilingd@dfo-mpo.gc.ca).
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