Fisheries College, Ocean University of China, Qingdao 266003, P. R. China
基金项目:
supported by the Natural Science Foun-dation of Shandong Province,China(No.ZR2009DQ011); the New Teacher Special Fund of Doctor of the Ministry of Education of China(No.20090132120006); the Postdoctoral Innovative Projects of Shandong Province,China(No.200702039)