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Record identifier : 565734
Personal Name - Primary Intelectual Responsibility : Best, Barbara J
Title and statement of responsibility : Bio-economic analysis of a predator control program: The Northern Pikeminnow Sport Reward Fishery [Thesis]
Publication, Distribution,Etc. : University of Washington, 2006
Language of the Item : eng
Dissertation of thesis details and type of degree : Ph.D.
Body granting the degree : , University of Washington
Summary or Abstract : The Northern Pikeminnow is a common native predator of juvenile salmon within the Columbia and Snake River Basins of Washington, Oregon, and Idaho. Federal hydropower dams have tipped the predator-prey balance such that pikeminnow control has been undertaken through a bounty fishery, known as the Northern Pikeminnow Sport Reward Fishery. In this dissertation, a model is developed for determining the optimal reward to offer recreational anglers so that the net benefits of pikeminnow control are maximized. Three sets of empirical information are required to implement the model: angler response to the reward (a harvest function), pikeminnow population parameters, and a function to evaluate the benefits of improved salmon populations. Angler response is estimated using 10 years of individual-level catch data in latent class regressions. An aggregate harvest function is then estimated from a series of simulated harvests derived from the individual responses. Biological parameters are estimated using a simple observation error model with a Beverton-Holt recruitment function. Finally, the benefits of reduced salmon predation are drawn from the literature. Results indicate that, given current survival conditions for salmon, the optimal reward lies approximately between $8.50 and $9.50 per fish. The reward currently offered for pikeminnow (top tier reward of $8 per fish) is thus within close range of the optimum..
Topical Name Used as Subject : Aquaculture, Fish production, Agricultural economics
Information of biblio record : TL
 
 
 
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