(1) To describe the relation between the fishing effort and the amount of catch the normal regression coefficient, calculated stochastically, is used in place of catch per unit effort. (2) A mathematical method for testing the significance of the difference as well as for estimating the ratio of these coefficients is divised.
Nippon Suisan Gakkaishi is an official journal of the Japanese Society of Fisheries Science written in Japanese only. The society publishes an English journal, Fisheries Science, as well, which accepts submissions from non-members of the society over the world. Detailed information is available in http://jsfs.jp/en/journals/fisheries-science.
