Open AccessMorphometric criterion of sexual and functional maturity; forecasting of stocks and recruitment for snow crab <i>Chionoecetes opilio</i> in the southern part of the Primorye subarea
Author(s) -
А. Г. Слизкин,
В. Н. Кобликов
Publication year - 2014
Publication title -
izvestiâ tinro/izvestiâ tihookeanskogo naučno-issledovatelʹskogo rybohozâjstvennogo centra
Language(s) - English
Resource type - Journals
eISSN - 2658-5510
pISSN - 1606-9919
DOI - 10.26428/1606-9919-2014-178-124-134
Subject(s) - snow , stock (firearms) , sexual maturity , population , stock assessment , fishery , biology , ecology , geography , physical geography , demography , meteorology , fishing , archaeology , sociology
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.