Production of Phase IIII Hybrid Striped Bass

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Production of Phase I-III Hybrid Striped Bass

• LaDon Swann
• Illinois-Indiana Sea Grant Program
• Purdue University and the University of Illinois
• Cooperative Extension Services

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Topics

• Biology
• Growth
• Spawning
• Fertilization
• Incubation
• Phase I Production
• Phase II Production
• Phase III Production

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Biology

• Original cross
• striped bass female (Morone saxatilits) X white
  bass male (M. chrysops)
• Reciprocal cross
• white bass female X striped bass male

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Biology

• Temperature
• survive
• 4-33C
• grow
• 15C
• optimal
• 25-27C

• Dissolved oxygen
• 6-12 ppm
• pH
• 7-8.5
• Alkalinity
• gt 100 ppm
• Salinity
• 0-25 ppt

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Biology

• Sexual Maturity (striped bass)
• Males
• some at two year
• all by five years
• Females
• some by two years
• all by six years

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Biology

• Sexual Maturity (white bass)
• Males
• some by one year
• all by two years
• Females
• some by one year
• all by two years

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Growth

• Striped Bass
• gt 70 pounds
• White Bass
• gt 5 pounds

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Spawning

• Temperature
• 65-68F
• Eggs
• 160,000 per pound of body weight per year
• semi-buoyant
• hatch in 2 days at 65-68F

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Spawning

• Collect broodstock
• Inject females one to two times
• Human chorionic gonadotropin
• 500 IU per lb. of fish
• May need to inject males

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Fertilization

• Wet method
• Strip eggs into small amount of water
• Immediately add sperm to eggs
• Mix to activate
• Tannic acid solution (150 ppm) for 7-12 minutes
  with aeration

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Fertilization

• Dry Method
• strip eggs into clean dry container
• Mix sperm
• Add water to activate
• Tannic acid solution (150 ppm) for 7-12 minutes
  with aeration

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Incubation

• McDonald hatching jar
• Tube within a tube
• 100,000-200,000 egg capacity
• Flow rate of 0.1-0.3 gallons per min.
• Hatch rate if 50 percent acceptable

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Phase I Production

• Pond preparation
• Fill two weeks prior to stocking
• Fertilize
• Organic fertilizer (cottonseed meal or alfalfa
  pellets)
• 200-500 pounds per acre two weeks before stocking
  and 25 pounds per acre per week after stocking.

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Phase I Production

• Pond preparation
• Fertilize
• Inorganic (ammonium nitrate and Phosphoric acid)
• Three times per week before and twice per week
  after stocking
• 25 pounds per acre

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Phase I Production

• Stocking
• 1-5 acre ponds
• 100,000 to 250,000 fry per acre
• 2-5 days old
• Survival
• 40-50 for original
• 10-25 for reciprocal

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Phase I Production

• Feeding
• Salmon starter diet (mash or 1 crumble after 14
  days
• Feed three times per day
• 3 pounds per acre

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Phase I Production

• Harvesting
• 30-45 days post-stocking
• seining and draining

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Phase II Production

• Stocking
• 1-5 acre ponds
• Grade Phase I
• 1 gram or larger
• 8,000 to 12,000 per acre

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Phase II Production

• Feeding
• 40-50 salmon starter
• 15-30 body weight per day, three times per day
• Reduce to 3-5 after two weeks
• Harvest
• Seining and draining
• Grade!!!!

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Phase III Production

• Pond Size
• 3 acres min. with 5 acres ideal
• Stocking
• Size
• 110-225 grams
• Rate
• 3,000-4,000 per acre

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Phase III Production

• Feeding
• 36 percent protein
• 1-3 percent body weight
• 21 FCR
• Harvest
• Seining and draining
• Size
• 1.5 to 2.0 pound market size