Mayer, I. and Shackley, S.E. and Witthames, P.R. (1990) Aspects of the reproductive biology of the bass, Dicentrarchus labrax L. II. Fecundity and pattern of oocyte development. J. Fish Biol., pp. 141-148
| Species | Development state | Trait | Primary Data | Secondary Data |
| Dicentrarchus labrax | Egg | Oocyte diameter | The postvitellogenic oocytes rapidly increasing volume by about 250% until they reach the hyaline stage 1.0-1.1 mm | 1.05 mm |
| Dicentrarchus labrax | Egg | Egg size after water-hardening | 1.2 | 1.2 mm |
| Dicentrarchus labrax | Egg | Egg Buoyancy | Small pelagic eggs | Pelagic |
| Dicentrarchus labrax | Female | Relative fecundity | 273-538 [Also 293-358, or 492-955] | 405.5 thousand eggs/kg |
| Dicentrarchus labrax | Female | Absolute fecundity | 290-2000.043 | 1145.02 thousand eggs |
| Dicentrarchus labrax | Female | Oocyte development | Bass shows group-synchronous oocyte development, at least two populations ('clutches') of oocytes can be distinguished in the ovary | Group-synchronous |
| Dicentrarchus labrax | Female | Onset of oogenesis | Recruitment of primary oocytes into secondary (vitellogenic) growth, continues through August and September, by the end of which time the ovaries have reacehd maturity stage III. From mid-October, oocyte development starts to accelerate. | ['August', 'September', 'October'] |
| Dicentrarchus labrax | Female | Resting period | From June to early August, oocyte development is minimal | 3.0 months |
| Dicentrarchus labrax | Spawning conditions | Spawning season | April-May [Nothern Bristol Channel] | ['April', 'May'] |
| Dicentrarchus labrax | Spawning conditions | Spawning season | Main spawning period : April-May | ['April', 'May'] |
| Dicentrarchus labrax | Spawning conditions | Spawning release | Fractional spawner [Once spawning has started, successive clutches appear to be recruited in quick succession from the large hetegogeneous population of smaller secondary oocytes. The first cluth contained 30-50% of the total number of seconday oocytes and that successive clutches contained relatively fewer oocytes. Spawn three or four seperate clutches in quick succession, successive clutches containing fewer oocytes. No secondary oocytes are 'held over' for the subsequent reproductive season.] | Total |