Sampling information of hadal snailfish, and phylogenetic relationships and population structure of resequenced individuals.
(A) PCA of eight hadal snailfish and five Tanaka’s snailfish. PC, principal component. MHS denotes Mariana hadal snailfish, YHS denotes Yap hadal snailfish, TS denotes Tanaka’s snailfish. (B) Neighbor-joining tree analysis of 8 hadal snailfish and 5 Tanaka’s snailfishusing SNPs detected in whole-genome resequencing data. (C) Ancestry results from Admixture under the k = 5 model. (D) Maximum likelihood trees constructed with 13 genes encoding mitochondria in these species, where KHS01-KHS03 were constructed using 2 mitochondrial genes (co1 and cytb) and manually merged with other species. Divergence times are shown in each node, and the color of each branch represents the survival depth of the species. KHS denotes Notoliparis kermadecensis. (E) Sampling information of hadal snailfish and Tanaka’s snailfish. Blue represents the ocean, the darker the color, the deeper the depth, depth data from GEBCO Compilation Group (2020) GEBCO 2020 Grid (doi:10.5285/a29c5465-b138-234d-e053-6c86abc040b9).