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Maturity and Spawning of Marbled Sole Pleuronectes yokohamae in the Southern Sea of Korea  

Seo, Youn-Il (South west Sea Fisheries Research Institute, NFRDI)
Joo, Hyu (South west Sea Fisheries Research Institute, NFRDI)
Lee, Sun-Kil (South west Sea Fisheries Research Institute, NFRDI)
Kim, Hee-yong (South west Sea Fisheries Research Institute, NFRDI)
Ko, Joon-Chul (South west Sea Fisheries Research Institute, NFRDI)
Choi, Mun-Sung (South west Sea Fisheries Research Institute, NFRDI)
Kim, Joo-Il (NFRDI)
Oh, Tag-Yun (NFRDI)
Publication Information
Korean Journal of Ichthyology / v.22, no.2, 2010 , pp. 83-89 More about this Journal
Abstract
We studied the maturity and spawning of Marbled sole Pleuronectes yokohamae from May 2006 to April 2007 in the Southern Sea of Korea. We analyzed monthly changes in maturity stages, gonadosomatic index (GSI), egg diameters, fecundity (F), total length (TL) at 50% group maturity, and sex ratio. The spawning period was November to February, and the main spawning period was December to January. The fecundity ranged from 75,155 eggs at 17.8 cm(TL) to 1,307,195 eggs at 36 cm (TL), and the relationship between TL and F was $F=3.656TL^{3.518}$ ($R^2$=0.872). The TL at first maturity was 17.8 cm and at 100% maturity, 32 cm. Thus, TL at 50% group maturity was estimated to be 19.8 cm. For sex ratio by length class, males were slightly predominant at sizes under 25 cm TL, but females were 100% at greater than 32 cm TL.
Keywords
Pleuronectes yokohamae; marbled sole; maturity; spawning;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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