Monitoring of commercial crab species on the shelf of Western Kamchatka in October-November 2020

Abstract

In the autumn of 2020, the crab fishery was monitored in the Sea of Okhotsk. The red king crab (Paralithodes camtschaticus), depth range 79-277 m, was studied in the Kamchatka-Kuril subzone. A the blue king crab (P. platypus) with a depth range of 163-177 m was studied in the West Kamchatka subzone. There were 4 types of crabs in the by-catch. Sampler-cone traps. The biological analysis consisted of a random sample of crabs taken from several traps. In crabs, physiological and biochemical parameters were studied, reflecting their relationship with the linocyclic cycles of crabs. In the Kamchatka-Kuril subzone, the stock of P. camtschaticus is in poor condition, and the population of the southern Tanner crab (Chionoecetes bairdi), on the contrary, it is intensively restored. In the West Kamchatka subzone, the condition of the blue king crab stock is satisfactory, and the snow crab (C. opilio) mainly consists of individuals who have long completed terminal molting, and they will be eliminated in the next two years.