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Published byAngelina Powers Modified over 8 years ago
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Stocking Programs in North America Chapter 14
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Warmwater Species Largemouth bass41 states Channel catfish35 states Bluegill29 states Striped X white bass hybrids26 states Smallmouth bass22 states
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Coolwater Species >1 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?
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