Fyke-net and gill-net size selectivities for yellow perch in Green Bay, Lake Michigan
North American Journal of Fisheries Management
By: J.A. Kraft and B. L. Johnson
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Abstract
We estimated a fyke-net selectivity function for yellow perch Perca flavescens in Green Bay, Lake Michigan, by comparing length-frequency distributions of yellow perch captured in fyke nets with different mesh sizes in 1986. Using a length--girth relationship for Green Bay yellow perch, we expressed selectivity as the ratio of girth (G) to effective mesh perimeter (P), which was 5a??7% less than nominal mesh perimeter. Then, fitting an existing gill-net selectivity function to the Green Bay yellow perch fishery, we found fyke-net and gill-net selectivities were similar, with similar G /P ratios, but fyke nets had smaller effective mesh perimeters and thus were more efficient at capturing smaller yellow perch for any given mesh size, The derived fyke-net selectivity function can be used to determine mesh sizes that minimize the sublegal catch of yellow perch in this fishery and could be applied to entrapment gear in other yellow perch fisheries, given data on the lengtha??girth relationships and effective mesh perimeters.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Fyke-net and gill-net size selectivities for yellow perch in Green Bay, Lake Michigan |
| Series title | North American Journal of Fisheries Management |
| Volume | 12 |
| Issue | 1 |
| Year Published | 1992 |
| Language | English |
| Contributing office(s) | Upper Midwest Environmental Sciences Center |
| Description | pp. 230-236 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | North American Journal of Fisheries Management |
| First page | 230 |
| Last page | 236 |
| Google Analytic Metrics | Metrics page |