Mixed stock analysis of Lake Michigan's Lake Whitefish Coregonus clupeaformis commercial fishery
| Autor: | Ryan T. Andvik, Scott P. Hansen, Randall M. Claramunt, Justin A. VanDeHey, Brian L. Sloss, Daniel A. Isermann |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Coregonus clupeaformis Ecology biology 010604 marine biology & hydrobiology Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Fishery Management zones Geography Bay Ecology Evolution Behavior and Systematics Stock (geology) Genetic composition |
| Zdroj: | Journal of Great Lakes Research. 42:660-667 |
| ISSN: | 0380-1330 |
| Popis: | Lake whitefish ( Coregonus clupeaformis ) support the primary commercial fishery in Lake Michigan. Discrete genetic stocks of lake whitefish have been identified and tagging data suggest stocks are mixed throughout much of the year. Our objectives were to determine if (1) differential stock harvest occurs in the commercial catch, (2) spatial differences in genetic composition of harvested fish were present, and (3) seasonal differences were present in the harvest by commercial fisheries that operate in management zones WI-2 and WFM-01 (Green Bay, Lake Michigan). Mixed stock analysis was conducted on 17 commercial harvest samples (n = 78–145/sample) collected from various ports lake-wide during 2009–2010. Results showed significant mixing with variability in stock composition across most samples. Samples consisted of two to four genetic stocks each accounting for ≥ 10% the catch. In 10 of 17 samples, the stock contributing the largest proportion made up |
| Databáze: | OpenAIRE |
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