Journal
JOURNAL OF FISH BIOLOGY
Volume 77, Issue 10, Pages 2454-2459Publisher
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1095-8649.2010.02800.x
Keywords
discriminant functions; hatchery; roach; stocking
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Hatchery-reared and wild roach Rutilus rutilus were correctly classified to their rearing environment in a discriminant function using data on their scale circuli patterns. The discriminant function was then used to classify recaptured R. rutilus by their origin (hatchery-reared and wild) during a riverine stocking evaluation. At 8 and 18 months post-stocking, 10 and 7% of fish captured in the vicinity of the stocking site were classified as hatchery-reared.
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