3.1 Genome survey analysis
A male shrimp (F. chinensis ) was sequenced using the Illumina HiSeq platform, and 125.99 Gb raw data were obtained. The K-mer analysis (Figure S1) revealed that the genome size was 1,384.88 Mb, with 54.79% repetitive sequences, and the genome heterozygosity was 1.04% (Table 1). The first six comparison species using 10,000 high quality reads randomly were all homologous comparisons (Table S1), which indicates an absence of exogenous contamination in our sample.