Analysis on migratory routine of Larimichthy polyactis

XU Zhao-Li，CHEN Jia-Jie

（Key Laboratory of Marine and Estuarine Fisheries Resources and Ecology， Ministry of Agriculture，East China Sea Fisheries Research Institute，Chinese Academy of Fisheries Sciences，Shanghai 200090，China）

This paper reviewed the migration of the Larimicht polyactis in Chinese coastal waters based on catch data，Abstract：

fish group movement and oceanographical background. We referred to the statistic results from over 10 major fishery companies from 1971 to 1982 and the study after 1965. The results showed that there are two migratory groups in the investigation area. The Yellow Sea and Bohai Sea groups overwintered near waters of 36° 00″ N，123° 00″ E in winter，then migrated towards the Bohai gulfs，Haiyang Island，Yalv estuary and Haizhou Gulf for spawning. After spawning，they feed in the middle of Bohai Sea from August to October，and then migrated again across the Chengshantou towards to the wintering ground in the Yellow Sea again. Another one is Yellow Sea and East China Sea （ECS） group，and its main wintering grounds，influenced by warm currents，were located at west of Juje，as well as mid and mid-southern of ECS. Their spawning migration past firstly through the waters of 32.00° N，123.3° to 124.3° E） in the middle of ECS towards to Zhoushan Fishing Ground，where they merged with another spawning group northwards from the southern nearshore，and then the mixed group spawned in Zhoushan partly. Another part moved to Estuary of Yangtze River and Lvsi Fish Ground to spawn. After spawning，fish groups continuously moved to Dasha Fishing Ground for feeding. After October，majority fishes in group migrated eastward back to wintering ground in offshore，some others move southwards via out side of forbidden fishing line to the mid-southern wintering ground in nearshore. Routine of spawning migration and wintering migration was different ways. In addition，apart from above major migration and spawning group，there were part groups from the outside of forbidden fishing line to coastal spawning ground in near. They migrated spawning to the closest islands，estuary and gulf then returning to where they left for feeding and wintering. [Journal of Fishery Sciences of China，2009，16（6）：931-940]

migration；fishing yields statistics；Yellow Sea；East China Sea；Bohai SeaLarimichty polyactis；Key words：