Walleye pollock Dynamics of the walleye pollock biomass in the Sea of Okhotsk

• Main Authors: Boris N. Kotenev, Оleg А. Bulatov
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Okhotsk; Kamchatka; Theragra chalcogramma
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.360.34; http://www.pices.int/publications/scientific_reports/Report36/291-295-Dynamics-of-walleye-pollok.pdf

Walleye pollock (Theragra chalcogramma) is the most valuable fish species in the Sea of Okhotsk. The Russian pollock fishery started in the 1960s and the first considerable landings (35,000 t) occurred in 1962 (Fadeev and Vespestad, 2001). The epoch of large-scale exploitation of pollock resources began in 1965, when the landings totaled 293,000 t. Since then landings had been increasing and in 1968 attained an impressive total of 675,000 t. The first historical maximum was marked in 1975 when 1,300,000 t of pollock were landed. In those years the fishery was exclusively concentrated in the eastern part of the sea, off western Kamchatka. Then landings started to decrease, reaching a low of 482,000 t in 1981. The second period of large