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
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 popula...
| Published in: | Izvestiya TINRO |
|---|---|
| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | Russian |
| Published: |
Transactions of the Pacific Research Institute of Fisheries and Oceanography
2014
|
| Subjects: | |
| Online Access: | https://doi.org/10.26428/1606-9919-2014-178-124-134 https://doaj.org/article/b5772f9acaa54bbc9c5dfe418eb97d38 |
| Summary: | 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. |
|---|