Temporal and spatial distribution of Miichthys miiuy in Jiangsu coastal waters

Based on the bottom trawl surveys in four seasons from 2006 to 2007,the temporal and spatial distribution of Miichthys miiuy resources was explored in the area inside bottom-trawl fishing forbidden zone line of Jiangsu sea area and the near zone. The results show that: (1) Miichthys miiuy is mainly distributed in the south of 34 00'N in Jiangsu sea area,and its main spawning area is located in the radiating sand ridges and the surrounding coastal waters during the spring spawning period; (2) the southern central sea area in Jiangsu Province is the transitional feeding ground for Miichthys miiuy in early development stages, there is a gradually decreased tendency of the juvenile groups in the zone; (3) Miichthys miiuy is mainly distributed in Jiangsu sea area in spring, summer and autumn, while it is seldom distributed in winter; (4) seafloor topography and physiognomy, tidal and current type and radiating sand ridge are important factors influencing the regional ecology which should be concerned.