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http://dx.doi.org/10.35399/ISK.33.1.6

Spawning Period and Sex Inversion of Black Seabream Acanthopagrus schlegelii Collected off the Coast of Tongyeong, Korea  

Lee, Hae Won (Fisheries Resources Research Center, National Institute of Fisheries Science)
Jeong, Jae Mook (Fisheries Resources Research Center, National Institute of Fisheries Science)
Yu, Hyo Jae (Fisheries Resources Research Center, National Institute of Fisheries Science)
Hwang, Kang Seok (Fisheries Resources Research Center, National Institute of Fisheries Science)
Oh, Si Eun (Fisheries Resources Research Center, National Institute of Fisheries Science)
Song, Se Hyun (Fisheries Resources Management Division, National Institute of Fisheries Science)
Publication Information
Korean Journal of Ichthyology / v.33, no.1, 2021 , pp. 37-42 More about this Journal
Abstract
This study sought to reveal spawning period and sex inversion of black seabream, Acanthopagrus schlegelii collected off the coast of Tongyeong, Korea. The monthly gonodosomatic index (GSI) showed the same pattern of between both sexes, and it was estimated that black seabream spawned once a year (between April and May). Histological examination revealed the transition from male to female sex, size of fork length bisexual gonad with ovarian (primary hermaphrodite; progress from male to female, MF) was seen at 20.5 to 39.6 cm and bisexual gonad with testicular (post hermaphrodite; female development and Male degeneration, FM) was seen at 26.4 to 50.2 cm. The egg diameters was in the range of 0.02 to 0.60 mm, with the smallest average egg diameter of 0.09 mm in February, the highest average egg diameters of 0.43 mm in August, and the range of fecundity was number of eggs 277,148 (33.9 cm) to 2,772,421 (34.1 cm).
Keywords
Black seabream; Acanthopagrus schlegelii; gonadal development; sex inversion; spawning period;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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