FEEDING BY FAR EAST FLOUNDERS (PLEURONECTIFORMES)
Yu. P. Diakov
FLOUNDERS, FEEDING, INTENSITY, FOOD COMPOSITION, FOOD SIMILARITY
The article presents analyzed and generalized information on the base of numeral home and foreign publications on the dynamics of feeding intensity, index of fullness and food composition of Pleuronectiformes in the Bering Sea, Seas of Okhotsk and of Japan, Pacific Ocean waters adjacent Kamchatka and Kuril Islands. It also gives comparative characterization of feeding peculiarities of one habitat species in different locations of Far East seas. Some similarity in temporal variations of feeding activity is demonstrated for smile flounders of the Bering Sea and Sea of Japan, and different traits to the dynamics demonstrated by flounders of the Okhotsk Sea are observed. It is found that geographically labile character of feeding is typical for the Bering flounders. Halibuts, longhead dab, flatheaded flounder, starry flounder, Alaska plaice and smile flounder can be attributed to the most conservative species in their preference to major feeding objects.
DISTRIBUTION AND SEASONAL MIGRATIONS OF FLOUNDERS IN KARAGINSKY AND OLUTORSKY GULFS
A. O. Zolotov
THE WESTERN PART OF THE BERING SEA, FLOUNDERS, DISTRIBUTION, MIGRATIONS, SPAWNING
On the basis of the ground trawling surveys data executed per 1959–2008 the seasonal and bathymetric distribution of eight commercial species of flatfishes from the northeast shelf of Kamchatka is analysed. The time and a direction of seasonal migrations are determined. The areas and the periods of spawning is specified.