Table 2 M. mactroides. Monthly SST (°C), values of oocyte size (μm), mean oocyte size \( (\bar{x}), \) number of females (f), number of measured oocytes (o), and stages of oocyte development (according to Table 1)
Year | Month | SST (°C) | Oocyte size (μm) | \( \bar{x} \) ± SD (μm) | f | o | Stage of development |
|---|---|---|---|---|---|---|---|
2005 | Jan | 21 | – | – | – | – | Sexual rest |
Feb | 21 | – | – | – | – | Sexual rest | |
Mar | 20 | – | – | – | – | Sexual rest | |
Apr | 17 | – | – | – | – | Sexual rest | |
May | 14 | 29–30 | 29.00 ± 1.06 | 3 | 60 | Ripe | |
Jun | 13 | 23–49 | 27.83 ± 1.19 | 3 | 30 | Active | |
Jul | 12 | 12–43 | 36.80 ± 1.03 | 3 | 90 | Cytolysed | |
Aug | 13 | 10–53 | 26.85 ± 0.55 | 17 | 289 | Active | |
Sep | 15 | 15–48 | 32.43 ± 1.36 | 11 | 316 | Active and spawning | |
Oct | 16 | 18–45 | 31.30 ± 1.27 | 6 | 208 | Ripe | |
Nov | 19 | 8–58 | 30.95 ± 2.16 | 10 | 273 | Spawning | |
Dec | 21 | 8–47 | 16.01 ± 1.56 | 3 | 25 | Cytolysed | |
2006 | Jan | 22 | – | – | – | – | Sexual rest |
Feb | 23 | – | – | – | – | Sexual rest | |
Mar | 21 | – | – | – | – | Sexual rest | |
Apr | 20 | 16–44 | 33.17 ± 4.27 | 3 | 54 | Active and ripe | |
May | 15 | 23–45 | 34.66 ± 0.90 | 3 | 28 | Ripe | |
Jun | 13 | 13–43 | 33.16 ± 2.08 | 3 | 90 | Spawning and cytolysed | |
Jul | 12 | 13–45 | 36.01 ± 2.02 | 3 | 60 | Cytolysed | |
Aug | 11 | 10–53 | 25.70 ± 2.71 | 10 | 286 | Ripe | |
Sep | 13 | 10–55 | 30.53 ± 2.80 | 10 | 325 | Ripe | |
Oct | 17 | 13–59 | 33.61 ± 0.87 | 13 | 454 | Ripe | |
Nov | 20 | 8–45 | 24.21 ± 2.95 | 5 | 208 | Spawning | |
Dec | 22 | 13–51 | 32.37 ± 2.43 | 7 | 195 | Spawning |