Egg incubation temperature influences the population-specific outmigration rate of juvenile brown trout Salmo trutta.

The difference in timing of the outmigration relative to time of release between the two releases, tested as the proportion outmigrating during the first month after release versus later, showed a highly significant difference in timing of the outmigration between the two releases ( χ 1 2 = 10.4, P < 0.001; Figure 3 ).

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