Table 4 Comparisons between some parameters of Lithophaga lithophaga from the Mediterranean and the Adriatic Seas
| Â | Bay of Bizerte (Northern Tunisia) | Area of Split (middle Adriatic) | |
|---|---|---|---|
Total wet weight (with intervalvular water) | Negative allometry | Isometric growth | |
Sex ratio | 1.13:1 | 1.3:1 | |
Reproductive period | Resting stage | From December to March (T between 11.5 and 16.8 °C) | During the cold season, from December to early April (T < 14 °C) |
Proliferation of the gonad and differentiation of the gametes | In early April and May (T between 18.2 and 20 °C) | In April, May and June (T between 14 and 20 °C) | |
Advanced gametogenesis | From June to July (T > 26 °C) | From June to beginning of July (T > 20 °C) | |
Maturation and spawning | Late July, end of August and early September (T between 25.1 and 35 °C) | Early July, August and late September (T between 22 and 27 °C) | |
Spent stage | November (T < 20 °C) | November (T < 20 °C) | |