Discordance for genotypic sex in phenotypic female Atlantic salmon (Salmo salar) is related to a reduced sdY copy number

摘要

Histological assessment of phenotypic sex. Gonadal phenotypes observed amongst the 176 Tasmanian Atlantic salmon used in this study. ( ) testis with cells at all spermatogenic stages; ( ) testis in resting state, comprised of type A and type B spermatogonias, and sertoli cells; ( ) ovary almost entirely comprised of perinucleolar oocytes; ( ) ovary comprised equally by perinucleolar oocytes and cysts of oogonias and oocytes in meiotic prophase; ( ) ovary dominated by stromal tissue and cysts of oogonias and oocytes in meiotic prophase. Sga, type A spermatogonia; Sgb, type B spermatogonia; Sci, primary spermatocytes; Scii, secondary spermatocytes; Sd, spermatids; Sz, spermatozoa; St, sertoli cell; O, oogonias; M, oocytes in meiotic prophase; Cno, chromatin nucleolar oocyte; Po, perinucleolar oocyte; S, stromal cells.