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Stock-recruitment relationship of Willowy flounder Tanakius kitaharai from the western Sea of Japan

Journal of National Fisheries University Volume 62 Issue 1 Page 31-38
published_at 2013-09
62-1-31-38.pdf
[fulltext] 1.15 MB
Title
日本海西部海域産ヤナギムシガレイの再生産関係
Stock-recruitment relationship of Willowy flounder Tanakius kitaharai from the western Sea of Japan
Creators Imai Chifumi
Creators Michine Atsushi
Creators Murayama Tatsurou
Source Identifiers [PISSN] 0370-9361
Creator Keywords
sea water temperature Tanakius kitaharai virtual population analysis willowy flounder
The western Sea of Japan stock of willowy flounder Tanakius kitaharai was analysed for stockrecruitment relationship using virtual population analysis. The biomass of spawning females increased from 417 t in 1998 to 1174 t in 2007, being stable at a high level in later years. Variation in recruitment (number of age 1 fish) were small, ranging from 16 .4 million in 1998 to 21.2 million in 2009. The Ricker type stock-recruitment model, R^^^=51.1 Pe^{-0.000945P}, was derived. An index of year class strength was evaluated from the relative distance from the Ricker curve, RR=(R-R^^^)/R^^^. Significant positive correlations were observed between RR and both sea water temperatue of the spawning ground and season. It was considered that recruitment success of willowy flounder may be enhanced by high temperatures.
Languages jpn
Resource Type departmental bulletin paper
Publishers National Fisheries University
Date Issued 2013-09
File Version Version of Record
Access Rights open access
Relations
[ISSN]0370-9361