Stocking Programs in North America Chapter 14

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Stocking Programs inNorth AmericaChapter 14
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Warmwater Species

• Largemouth bass 41 states
• Channel catfish 35 states
• Bluegill 29 states
• Striped X white bass hybrids 26 states
• Smallmouth bass 22 states

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Coolwater Species

• gt1 billion stocked per year
• 95 walleye
• Northern pike (mostly fry)
• Muskellunge
• Tiger muskellunge

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Coldwater Species

• Trout, inland salmon
• 250 million/year
• 50 fingerlings, 33 catchables, 17 fry
• 122 million rainbow trout

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Anadromous Species

• Pacific salmon
• Atlantic salmon
• Striped bass
• 900 million/year

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Introductory Stocking

• Introductions of
• non-natives

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Enhancement Stocking

• Maintenance - recruitment failure
• Supplemental - augment natural recruitment

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Why Stock?

• Introduce new species (sport, commercial)
• Introduce new forage
• Biological control
• Start/maintain put-grow-take fishery
• Supplement year-class
• Satisfy public, political pressure

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Why Stock?

• Mitigate situation
• Start/maintain put-take fishery
• Re-establish extirpated species
• Establish trophy fishery
• Increase angler satisfaction
• Redistribute fishing pressure

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What Species?

• Purpose?

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What Size?

• Cost-benefit analysis

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What Number?

• Goal, demand

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When, Where?

• Biology, survival, demand

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What Quality?

• Genetics
• Parasites
• Physiology
• Handling

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Overall Evaluation

• Is it worth the time and money?