Morphometric criterion of sexual and functional maturity; forecasting of stocks and recruitment for snow crab Chionoecetes opilio in the southern part of the Primorye subarea

• Published in: Izvestiya TINRO
• Main Authors: Alexey G. Slizkin, Valery N. Koblikov
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Transactions of the Pacific Research Institute of Fisheries and Oceanography 2014
• Subjects: крабы-стригуны; морфометрический критерий; широкопалые самцы (шпс); узкопалые самцы (упс); пополнение; запас; Aquaculture. Fisheries. Angling; SH1-691; Chionoecetes opilio; Snow crab
• Online Access: https://doi.org/10.26428/1606-9919-2014-178-124-134; https://doaj.org/article/b5772f9acaa54bbc9c5dfe418eb97d38

Stocks of large-hand and narrow-hand males of snow crab opilio are assessed separately for the first time on the data collected in the Primorye subarea southward from Cape Zolotoy (47°20’ N) in 2010-2013. Results of the separate assessment change fundamentally the conception of this exploited population recruitment. There is proposed to calculate the recruitment of its commercial stock from the number of narrow-hand males with commercial size instead of former method based on the number of pre-recruits size groups, that means that the large-hand males only are considered as commercial ones but the large-size narrow-hand males are their reserve. Dynamics of the size composition is analyzed and several options for calculation of the commercial stock recruitment after the final moult are proposed.