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The red king crab, Paralithodes camtschatica Tilesius 1815, in the Barents Sea life history and future stock progress Kongekrabbe i Barentshavet - livshistorie og framtidsutsikter






Fauna (Oslo): 491: 20-33

The red king crab, Paralithodes camtschatica Tilesius 1815, in the Barents Sea life history and future stock progress Kongekrabbe i Barentshavet - livshistorie og framtidsutsikter

Adult red king crabs, Paralithodes camtschatica, were transferred in a number of some thousands from their natural habitat in the Northern Pacific to the Barents Sea by Sovjet scientists between 1961 and 1969. The population in the Barents Sea in the Russian Extended Economic Zone is now (1995) estimated to be at least 500.000 individuals. The ecological impact of this transplantation experiment is not yet fully understood. Research on the stomach content of P. camtschatica captured in the Bering Sea and in the Barents Sea shows that this species has a wide feeding niche. Limitations in possible prey types will probably not be a major factor determining the future stock size and distribution in the Barents Sea, physical factors as temperature and bottom topography may be more important. Although little is known about the ecology of this species in its new distribution range, commercial fisheries may be of future interest both in Northern Norway and along the Kola peninsula of Russia. Manipulation of natural ecosystems violates international conventions on environmental conservation and may reduce the local biological diversity, and should therefore generally be avoided.

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Accession: 038799728



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