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http://dx.doi.org/10.7837/kosomes.2011.17.4.367

Biological Properties of Common Squid in the Yellow Sea of Korea  

Choi, Kwang-Ho (Fisheries Resources Research Division, Korea National Fisheries Research and Development Institute)
Kwon, Dae-Hyeon (Fisheries Resources & Environment Division, West Sea Fisheries Research Institute)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.17, no.4, 2011 , pp. 367-373 More about this Journal
Abstract
We investigated the biological characteristics of the squid, Todarodes pacificus Steenstrup through the samples caught monthly in the Yellow Sea($32^{\circ}$ 30'N, $122^{\circ}E-37^{\circ}$ 30'N, $127^{\circ}E$) from 1985 to 1987. Monthly mantle length frequency were separated into Autumn spawning group and winter spawning group with Tanaka's method(1956) to determine the main group of the squids caught in the Yellow Sea. The ratio of winter spawning group was higher than that of autumn spawning group. Monthly gonadosomatic index of females increased on July in 1985, on October in 1986, and October in 1987 and decreased later in each year. That of males increased on June in 1985, on July in 1986, and June in 1987. The length of 50% group maturity of female was 20.7 cm mantle length(ML) in 1985, 17.9 cm ML in 1986, and 17.2 cm ML in 1987. The ratio of female was higher than that of male in the group over 24 cm ML, and the ratio of male was higher than that of female in the group under 24 cm ML. We concluded that the length of 50% group maturity of squids was affected by the density of the population status.
Keywords
Todarodes Pacificus; Biological characteristics; Group maturity; Spawning and maturity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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