South Korea: The orchard produces a manual for the process of maturation of sea squirt gonads

The National Academy of Fisheries Science announced on the 9th that it will produce and distribute a manual containing the characteristics of each gonad maturation process so that fishermen who produce artificial sea squirt seeds can easily know the spawning time of the mother sea squirt. Domestic sea urchin production in 2021 was 17,400 tons (44.1 billion won), which was lower than the average production of 30,000 tons (66.9 billion won) over the past five years due to death due to high temperature. In order to secure enough healthy artificial seeds, it is essential to accurately determine the spawning time of the mother sea squirt and produce seeds. In 2017, the Agricultural Institute published the , which contains the process of maturation and culture of sea urchin gonads. However, due to changes in the climate and aquaculture environment, the differences in spawning time and egg size have increased depending on the sea area or individual. In particular, ...