既往の資料に基づく北洋産鮭鱒の移動に関する新知見-I

紅鮭(Oncorhynchus nerka)

抄録

On the migration routes of red salmon, some reports have been made by previous authors, but analysis for seasonal and local changes of the routes have not been done. By the present study the following new findings are obtained.
Most of red appeared off Southern part of East coast of Kamchatka migrate northwards until the end of June. But after that time or early July, Southery migrants become to increase in number.
In the West coast of Kamchatka, there is such tendency that most ones migrate to North in offing, while in coastal waters most ones migrate towards South.