Overview 1. Yellow perch : great species for Great Lakes aquaculture - PDF document

5/22/2018 Solving Key Biological Problems Limiting the Expansion of the Yellow Perch Aquaculture Industry Terence P. Barry Aquaculture Research Laboratory Department of Animal Sciences Overview 1. Yellow perch : great species for Great Lakes aquaculture 2. Key biological problems with yellow perch aquaculture • larval fish production • slow growth 3. Innovations to help solve these problems larval fish production • polyculture system with marine rotifers • lasers slow growth • genetic manipulation using CRISPR-Cas9 • growth-promoting pheromone 1

5/22/2018 Aquaculture Human Population Growth World Fish Production Resource Efficient Production 2

5/22/2018 Climate Friendly Production Market for Fish in the Great Lakes Region 65 million people 15 lbs fish consumed/person/yr market size = 975 million lbs 3

5/22/2018 Yellow Perch is an Excellent Aquaculture Species • Large market & high prices • Excellent biological attributes Yellow Perch Market • Market size : ~50 million lbs/yr • US supply from wild catch : ~15 million lbs/yr • Supply from imports : ~2 million lbs/yr • Aquaculture potential : 33 million lbs/yr • Current aquaculture production : 0.2 million lbs/yr • Wholesale value of yellow perch in the round : ~$3/lb • Retail value of yellow perch fillets : ~$15/lb 33 million x $15 x (0.45*) = $223 million *fillet yield 4

5/22/2018 Favorable Biological Attributes • Readily accepts formulated diets • Lower on the food chain • Relatively disease resistant • Stress tolerant • Large number of offspring • Tolerant of high densities • Tolerant of poor water quality • Wide temperature range • Good flesh yield • Meat has excellent freezing and storage qualities Production Methods RAS Ponds Cost of production: ~$2.60/lb Cost of production: ~$2.10/lb 5

5/22/2018 Key Problems Larval yellow perch are small and difficult to rear • Early stages require live feeds • Poor overall survival Slow growth to market size • It takes 2-3 years to grow a fish to market size in ponds and over 1 year in RAS under optimal environmental conditions Larval Fish Production Pond Production 6

5/22/2018 Larval Fish Production Intensive Culture Indoors Induced spawning Live feeds Dry diets Polyculture with Marine Rotifers 7

5/22/2018 Lasers to Stimulate Feeding on Dry Diets Problem: Slow growth 8

5/22/2018 Endocrine Growth Axis in Vertebrates 17 Genetic Manipulation using CRISPR-Cas9 9

5/22/2018 Growth-Promoting Pheromone Accidental discovery Growth-Promoting Pheromone 10

5/22/2018 Growth-Promoting Pheromone Experimental Design Growth-promoting pheromone 11

5/22/2018 Implications More Information Dr. Terence P. Barry Aquaculture Research Laboratory 660 N Park St. Madison, WI 53706 uwaquaculture.com 12