Table 3 The sizes of oocytes at various stages of vitellogenesis in the brown bullhead (Ameiurus nebulosus).

From: Annual gonadal cycle of the invasive catfish brown bullhead Ameiurus nebulosus from an oxbow lake of Vistula river, Poland

Size oocytes [µm]

Beginning of previtellogenesis

Finally previtellogenesis

Beginning of vacuolisation

First occurrence of the yolk

Completed vitellogenesis

Mean ± SD range

182.09±36.27a

83.48-245.33

339.91±65.62 b

246.04-475.99

654.73±84.70c

476.78-816.88

958.42±174.01d

820.64-1622.26

2247.06±253.01e

1705.04-3078.99

  1. SD = standard deviation; Values marked with different superscript letters show significant differences between the features (P < 0.05, ANOVA Kruskal–Wallis test).
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