The United Nations Convention on the Law of the Sea called the marine constitution came into effect in our country on the day of the sea in 1996, and an gExclusive Economic Zonehwas set at a range of 200 nautical miles off our country. Consequently, setting up and managing TAC (Total Allowable Catch) of living resources in this water has become our duty in accordance with the convention.

In the Pacific Ocean off the Tohoku district (Mixed water region), many economically important fishery resources are distributed: pelagic fishes such as saury, sardine, mackerel and squid, and demersal fishes such as cod, theadfin, flatfish, rockfish and tanner crab. In the TAC system, fishery research institutes are required to estimate the stock level and its trends of these species and to compute the ABC (Allowable Biological Catch) of these stocks each year with accuracy.

This branch is located in Hachinohe which is one of the most important landing ports for the fisheries in the Mixed water region, and two sections were established from October 1998 on: Stock Assessment Section and Fisheries Biology Section. These sections investigate sustainable utilization measures of the fishery resources including ABC estimation, catch forecast, and harmonization between the marine ecosystem and fisheries in cooperation with the other institutes of the Fisheries Agency, prefectural fisheries experimental stations and universities.

Sorting of fishes on the deck of R/V Wakataka-Maru.

Stock investigation on the research vessel.

Otolith sample from a Pacific cod of 80 cm in total length caught in Mutsu Bay.

Stock measurement by quantitative echo-sounder.

Catch trends of pelagic fishes in the Mixed water region.

Japanese version is here

The Organization of TNFRI