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Table 1 Classification of gonadal samples based on histology

From: Small-scale transcriptomics reveals differences among gonadal stages in Asian seabass (Lates calcarifer)

Sex type Index Gonadal maturation stage Histological criterion Number of samples
Female F1 Pre-vitellogenesis Mostly pre-vitellogenic oocytes 4
F3 Vitellogenesis Vitellogenic oocytes more than half of section 7
F4 Atretic Presence of atretic oocytes 6
Male M1 Testis gonia Mostly gonia 3
M2 Spermatogenesis Mostly spermatocytes and spermatids 2
M3 Spermiation Mostly spermatozoa 6
M4 Post-spawning Absence of spermatozoa in testicular lobules 2
   Total number of samples 30