Genomic DNA was obtained from the testis of a single C. milii caught in Tasmania, Australia, and used to prepare libraries with inserts of different sizes. Sequencing was conducted on the Roche 454 GS FLX Titanium platform (for shotgun fragments and 3-kilobase and 8-kilobase inserts) and the ABI3730 instrument (for plasmid, fosmid and BAC ends). The C. milii genome was assembled using CABOG v6.1. PolyA-selected RNA from ten tissues of C. milii (brain, gills, heart, intestine, kidney, liver, muscle, ovary, spleen and testis) and the spleen and thymus of G. cirratum were sequenced on the Illumina GAIIx platform. Transcripts were assembled de novo using Trinity r2011-07-13. MicroRNA genes were identified by deep sequencing of small RNA from 16 tissues (brain, blood, eye, gills, heart, intestine, kidney, liver, muscle, ovary, pancreas, rectal gland, skin, spleen, testis and uterus) on the Illumina GAIIx platform. Annotation of the genome was carried out using the Ensembl gene annotation pipeline which integrated ab initio gene predictions and evidence-based gene models. The gene set can be viewed at http://esharkgenome.imcb.a-star.edu.sg/ . Annotation of protein domains in the C. milii proteome was carried out by searching it against the Pfam v26 database using HMMER v3.0. Zebrafish spp1 was knocked down using morpholinos or the CRISPR/Cas9 system. Methods are described in detail in individual sections of the Supplementary Information.
All animals were cared for in strict accordance with National Institutes of Health (USA) guidelines. The protocol was approved by the Institutional Animal Care and Use Committee of the Biological Resource Centre, A*STAR (protocol #100520).
All animals were cared for in strict accordance with National Institutes of Health (USA) guidelines. The protocol was approved by the Institutional Animal Care and Use Committee of the Biological Resource Centre, A*STAR (protocol #100520).