Key Laboratory of Silkworm and Mulberry Genetic Improvement Ministry of Agriculture Jiangsu University of Science and Technology Zhenjiang 212018 China;
Sericultural Research Institute Chinese Academy of Agricultural Sciences Zhenjiang 212018 China;
Animal Science and Technology College Henan University of Science and Technology Luoyang 471003 China;
School of Information Science and Technology Xiamen University Xiamen 361005 China;