1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China; 2. East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; 3. Marine Fisheries Research Institute of Jiangsu, Nanteng 226007, China
Abstract: The biological characteristics including body length, body weight, ovary maturity, and feeding intensity and spatial distribution, and relationships between temperature and spatial distribution in Chinese drum Miichthys miiuy were evaluated by the data collected from nekton resource survey along Jiangsu coastal areas in summer of 2006. The results showed that the Chinese drum stock comprised predominantly of immature individuals recruited in the same year, which were mainly distributed in the area of 121°30＇E～122°E、32°N-33°N, accounting for 87. 63% of total abundance, with the body length of 70 -280 mm and suitable temperature of 25 -27 ℃. The recruitments had body length of 364 -713 mm and gonad over stage IV. These individuals were mainly found in the south of the Haizhou Bay and the north of the Yangtze estuary at suitable temperature of 24 - 26 ℃. The individuals with the minimal body length of 364 mm （stage -6） were observed to spawn, maturity at 2 year old. The of Chinese drum had increase in feeding intensity with increase in size. The stock distributed apparently in aggregation, depending on the different sizes.
2008, Vol. 23 
