Reproduction of the Shotted halibut in the southern Korean waters

H. Cha, Sukyung Kang, J. Choi, T. Oh, Young-il Seo
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引用次数: 4

Abstract

was investigated based on the samplescaptured in South Korean waters from January 2008 to December 2009. Gonadosomatic index began toincrease in December , and reached maximum between January to March . After spawning it began todecrease from May . Reproductive season was estimated to January -April , with peak in February . Fecunditywas proportional to the size of the female , with the clutch size varying from 170,000 eggs in the smallestfemale (total length , 28.9 cm ) to 1,300,000 eggs in the largest (total length , 41.5 cm ). Size at 50% sexualmaturity (TL 50), determined from mature females , was 28.8 cm . Annual reproductive cycles of this speciescould be divided into six successive stages ; immature stage (May -October ), nucleolus stage (November -January ), yolk vesicle stage (January -February ), vitellogenic and ripe stage (January -April ) and spent stage(April -May ).Keywords: Maturation , Spawning , Annual reproductive cycle , Shotted halibut , Southern Korean waters
韩国南部海域的大比目鱼的繁殖
根据2008年1月至2009年12月在韩国水域捕获的样本进行调查。促性腺指数在12月开始上升,1 - 3月达到最大值。产卵后,从5月开始减少。繁殖季节为1 - 4月,2月为繁殖高峰。繁殖力与雌性的大小成正比,卵的大小从最小的雌性的17万个蛋(全长28.9厘米)到最大的130万个蛋(全长41.5厘米)不等。在50%性成熟(TL 50)时,由成熟雌性测定的大小为28.8厘米。该物种的年繁殖周期可分为六个连续的阶段;未成熟期(5 - 10月)、核仁期(11 - 1月)、卵黄囊期(1 - 2月)、卵黄成熟期(1 - 4月)和花期(4 - 5月)。关键词:成熟,产卵,年繁殖周期,大比目鱼,韩国南部水域
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