ベーリング海大陸傾斜面浅部の底延縄にかかつた底魚類の分布様式-VI : 緩やかな斜面上の分布

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1. This report dealt with the distribution of groundfishes hooked along a gang of setline of ca. 13.7km long laid on April 30, 1962, from 60°47N to northward along the 179°48E line. 2. The tendency of bathymetric difference in the density of the groundfishes was found even in the distribution of them hooked along a gang laid on a very easy gradient sloping from 280m to 370m deep, although this tendency did not take the form of simple gradient of density being modified seriously by the schooling habits of fish. 3. Usually, the groundfishes, especially those of high economic value, were distributed more densely along the outer edge of the plateau than in other zones, but the present example provided with no evidence in support of such a structure as this. 4. This suggests that the very obtuse inflection of bottom gradient like this may not be the symptom of a good locality of setting the gears, because the weak inflection like this was not enough distinct to modify the distribution of the groundfishes.
公益社団法人日本水産学会の論文