Studies on the Coastal Fisheries Resources in Sendai Bay nad Adjacent Waters-I
Small Trawl Nets Resources
1976 Volume 42 Issue 12 Pages 1323-1332
Details
1976 Volume 42 Issue 12 Pages 1323-1332
In order to prepare materials for a re-evaluation of the coastal fisheries, the present state of the living resources taken by small trawl nets in Sendai Bay and adjacent waters was studied. Using the statistical data of catch and effort during 1957-1973, the following results were obtained.
1) Within less than two decades the fishing efforts of the small trawl nets in Sendai Bay have increased by 6-7 times.
2) The density of the total stock as the object of the small trawl nets in Sendai Bay shows a general tendency toward decline.
The stock levels of flounder and plaice, the commercially most important fishes in Sendai Bay, have greatly diminished since about 1965, falling into the overfished states.
4) The fluctuation in catch and CPUE of Pacific cod and Alaska pollack well reflects the fluctuation in their stocks.
