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. 2021 Aug 9;22:609. doi: 10.1186/s12864-021-07838-1

Fig. 7.

Fig. 7

Description and histological illustrations of sex and gametogenetic stages used for RNA-sequencing and for RT-qPCR. Based on the criteria described by Heude-Berthelin et al. [34] and on the determination of sex phenotypes by Broquard et al. [10]. Stage 0, undifferentiated cells; stage 1, gonia proliferations; stage 2, gonia maturation; stage 3, ripe gonads with mainly spermatozoa and mature oocytes; some undifferentiated cells. Stages 0, 1 and 3 for RNA-sequencing; stages 0, 1, 2 and 3 for RT-qPCR. Go: gonia, OG: oogonia, PVO: pre-vitellogenic oocytes, SG: spermatogonia, SPC: spermatocytes, SPZ: spermatozoa, ST: storage tissue, T: gonadal tubule, VO: vitellogenic oocytes. Bars: 25 μm