School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
School of Agriculture Ludong University Yantai 264025 China;
Crassostrea gigas; UPLC-MS metabolomics; physiological indicators; melanin; shell color;