FN Archimer Export Format PT J TI Evidence for a genetic sex determination in Cnidaria, the Mediterranean red coral (Coralliumrubrum) BT AF PRATLONG, M. HAGUENAUER, A. CHENESSEAU, S. BRENER, K. MITTA, Guillaume TOULZA, E. BONABAUD, M. RIALLE, S. AURELLE, D. PONTAROTTI, P. AS 1:1,2;2:1;3:1;4:3;5:3;6:3;7:4;8:4;9:1;10:2; FF 1:;2:;3:;4:;5:PDG-DRV-RA-DRIM;6:;7:;8:;9:;10:; C1 Aix Marseille Univ, Avignon Univ, CNRS, IRD,IMBE, Marseille, France. Aix Marseille Univ, CNRS, Cent Marseille, I2M, Marseille, France. Perpignan Via Domitia Univ, Univ Montpellier, IFREMER, CNRS,IHPE UMR 5244, Perpignan, France. UMS BioCampus MGX Montpellier GenomiX, Inst Genom Fonctionelle, 141 Rue Cardonnille, F-34094 Montpellier 05, France. C2 UNIV AIX MARSEILLE, FRANCE UNIV AIX MARSEILLE, FRANCE IFREMER, FRANCE CNRS, FRANCE SI MONTPELLIER SE PDG-DRV-RA-DRIM UM IHPE IN WOS Ifremer jusqu'en 2018 DOAJ copubli-france copubli-univ-france IF 2.504 TC 11 UR https://archimer.ifremer.fr/doc/00382/49367/49769.pdf LA English DT Article DE ;genetic sex determination;Corallium rubrum;RAD-sequencing;Cnidaria AB dSexual reproduction is widespread among eukaryotes, and the sex-determining processes vary greatly among species. While genetic sex determination (GSD) has been intensively described in bilaterian species, no example has yet been recorded among non-bilaterians. However, the quasi-ubiquitous repartition of GSD among multicellular species suggests that similar evolutionary forces can promote this system, and that these forces could occur also in non-bilaterians. Studying sex determination across the range of Metazoan diversity is indeed important to understand better the evolution of this mechanism and its lability. We tested the existence of sexlinked genes in the gonochoric red coral (Corallium rubrum, Cnidaria) using restriction site-associated DNA sequencing. We analysed 27 461 single nucleotide polymorphisms (SNPs) in 354 individuals from 12 populations including 53 that were morphologically sexed. We found a strong association between the allele frequencies of 472 SNPs and the sex of individuals, suggesting an XX/XY sex-determination system. This result was confirmed by the identification of 435 male-specific loci. An independent test confirmed that the amplification of these loci enabled us to identify males with absolute certainty. This is the first demonstration of a GSD system among non-bilaterian species and a new example of its convergence in multicellular eukaryotes. PY 2017 PD MAR SO Royal Society Open Science SN 2054-5703 PU Royal Soc VL 4 IS 3 UT 000398107700025 DI 10.1098/rsos.160880 ID 49367 ER EF