Fig. 2

SEM images of semi-buoyant and adhesive eggs in C. alburnus at three time stages of unfertilized (Un-FE), and 0, and 30 min post fertilization (0 min-FE and 30 min-FE). a-f show images of semi-buoyant eggs (white scale bar = 250 μm, black scale bar = 10 μm); g-l show images of adhesive eggs (white scale bar = 250 μm, black scale bar = 10 μm). White arrows indicate micropyle (M). Black stars indicate vestibule (V). MC, micropylar canal; S, sperm; FP, fertilization plug