図3 (IMAGE)

Kobe University

図3

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A and B: The relationship between the size of fish in fall (October) and the probability of smoltification for the hatchery groups. C and D: Size groupings for fish recaptured from natural streams. In A and B, the vertical dashed line shows the size (=threshold size) at which the probability of smoltification is 50%.

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田中達也

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