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<br />3. Operate and maintain experimental marshes for highest <br />production of northern pike, consistent with survival to <br />recruitment into the fishable population. <br />4. Develop procedures for management of each of the <br />experimental spawning marshes. <br />S. Determine the most productive and least costly method <br />of marsh utilization for spawning. 1/ <br />6. Make management determinations from literature <br />review and from consultations. <br />6. Refine management criteria where necessary by <br />field experiments. <br />S. Determine the time and method of fingerling release <br />from the marsh. 1/ <br />6. Make management determinations from literature <br />review and from consultations. <br />6. Refine management criteria where necessary by <br />field experiments. <br /> <br />1/ 1. Should adult spawners be used? <br />a. Should free access by spawners be <br />allowed? <br />b. Should selected numbers, sizes, and sex <br />ratios of spawners be stocked? <br />c. Should adults be removed after spawning? <br />d. What should be the source of the spawners? <br />2. Should marshes be used for rearing only? <br />a. Should fertilized eggs or fry be stocked? <br />b. If fry, what age should be stocked? <br />c. If eggs or fry, what should be the stocking <br />density? <br />d. If eggs or fry what should be the manner of <br />introduction? <br /> <br />1/ 1. Should young of the year be allowed to emigrate to <br />the lake at will? <br />2. Considering cannibalism, marsh food supply, <br />fingerling size, physico-chemical conditions in the <br />marsh and conditions in receiving lake system, when <br />is the best time for fingerling harvest if <br />controlled? <br />3. Should marsh be drained and young of the year <br />flushed to the lake without handling? <br />4. Should young of the year be trapped and distributed <br />in receiving lake? <br /> <br />18 <br />