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. 2021 Apr 22;12:2395. doi: 10.1038/s41467-021-22604-3

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a The life cycle of E. sinensis. Adult crabs attain sexual maturity in estuaries followed by egg hatching and then upstream migration of megalopae to rivers and lakes. b The genome landscape of E. sinensis. From outer to inner circles: b1, marker distribution on 73 linkage groups at Mb scale; b2, protein-coding genes located on anchored scaffolds; b3, distribution of high- (>60%) and low-GC (<20%) contents in 200-bp regions across the genome within a 100-kb sliding window; b4, microsatellite distribution (1–6 bp) across the genome drawn in 100-kb sliding windows; b5, SNP density of resequenced individuals drawn in 100-kb sliding windows within a 50-kb step, with polymorphism hotspot regions (P < 0.05) colored in red. The genomic visualization was created using the program Circos. c Demographic histories of mitten crab reconstructed using PSMC model. The period of the last glacial maximum (LGM, ~18,000–22,000 years ago) is shown as a gray bar. g (generation time) = 2 years; µ (neutral mutation rate per generation) = 2.5 × 10⁻⁸.