3.THE CHARACTERISTICS OF REPRODUCTION CYCLE OF THE HAIRTAIL, TRICHIURUS HAUMELA (PISCES, TRICHIURIDAE) POPULATIONS IN SPRING-SUMMER AND AUTUMN SPAWNING IN THE EAST CHINA SEA
4.Based on investigation and monitoring data of hairtail,Trichiurus haumela in the East China Sea and with maths-patten and previous research result,the study was conducted on calculating stock -biomass,allowable catch, and maximum sustainable yield(MSY) of hairtail,analysing the resources status,ascertaining total allowable catch,and discussing the feasibility of implementing quota catch system of hairtail in the East China Sea.
6.According to the seasonal variation analysis, the fishing seasons of Amberjack (Seriola dumerili), Yellow-fin trevally (Caranx ignobilis), Blue-striped runner (Elagatis bipinnulatus), Big-eyed scad (Trachurops macrophthalmus), Korean mackerel (Scomberomorus koreanus), Chinese mackerel (S. sinensis), Hairtail (Trichiurus haumela), Unicorn filefish (Aluterus monoceros), Angel sharks (Scoliodon walbeemii), Round scad (Decapterus maruadsi) and Small spot pompano (Trachinotus baillonii) were significantly affected by different types of set-net construction.