On the growth of the blue king crab (Paralithodes platypus) population in the Peter the Great Bay of the sea of Japan

Koblikov, V.N.; Borilko, O. Yu.; Ponomaryov, Semyon

doi:10.1134/s1063074010070059

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“…The overall distribution of blue king crab was rather uneven and the species was most widespread over the northern part of the shelf of the studied area at depths of 35 to 225 m. In recent years it has also occurred in Peter the Great Bay [5]. Its densest aggregations reached 700 ind./km 2 , at the mean value of 12400 ind./km 2 .…”

Section: Blue King Crabmentioning

confidence: 92%

Diet and some ecological features of the most widespread commercial crab species in the northwestern Sea of Japan in early spring

Chuchukalo¹,

Nadtochy²,

Koblikov³

et al. 2011

Russ J Mar Biol

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Results of the study of feeding habits of the commercial crab species Chionoecetes opilio, Ch. japonicus, Paralithodes platypus, P. camtschaticus, and Erimacrus isenbeckii in early spring 2009 are pre sented. The composition, distribution, and quantitative characteristics of benthos in the areas of sampling are analyzed. The generalized pattern of distribution of the considered crabs is shown with the maximum and mean densities. These crabs were found to consume at least three to four single portions of food during 10-12 hours of daylight. The lowest feeding intensity was observed in the opilio snow crab in March and April. Cannibalism proved to be typical for all the studied crab species in the spring. It was most developed in the deepwater red snow crab, in whose diet representatives of the same species constituted a one third share. It was also noted that the diet of the studied crabs included a major proportion of crabs and shrimps, which was unusual for the feeding habits of the same species in other Far Eastern seas.

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Section: Blue King Crabmentioning

confidence: 92%