基金supported by National Science & Technology Major Project(2009ZX09301-001)Natural Science Foundation of China(Nos.21072204,30730108,and 20721003)+3 种基金STCSM International Cooperation Project between SIMM/China and ICB/Italy(No.10540702900)Science Foundation for the Excellent Youth Scholars of Shanghai(ssc09001)Scientific Research Foundation for PhD of Shanghai Ocean Universitypartly founded by the NSFC-TRF International Cooperation Project(No.20911140471)