Reproduction characteristic in Net Cage Cultured Abalone, Haliotis discus hannai from Wando
Byeong-Hak Kim, Se Ra Yoo, Jung Jun Park, Yu Ri Shin and Mi Ae Jeon
South Sea Fisheries Research Institute, NIFS, Yeosu 59780, Korea Aquaculture Management Division, Aquaculture Research Institute, NIFS, Busan 46083, Korea
This study describes the reproduction characteristic in net cage cultured abalone, Haliotis discus hannai in Wando on 2016 and 2017. Sex ratio analysed female significantly higher than male (1:0.79-0.81). The spawning period was July to September on summer breeders. Atretic follicles were observed every month and the rate of occurrence was high at late active and ripe stage (from April to September). It is suggested that spawning disruption is caused by atretic follicle.
  
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