Table 1 Analysis of European hake spawning dynamics.

TL range (cm)	Batch fecundity (thousands of oocytes)			Oocyte stage	Potential fecundity			Accumulated number of batches			Spawning season duration (in months)
TL range (cm)	SP1	SP2	SP3	Oocyte stage	SP1	SP2	SP3	SP1	SP2	SP3	SP1	SP2	SP3
40–50	—	—	142	VTO	—	—	283	—	—	2	—	—	0.3
				+ EVTO	—	—	567	—	—	4	—	—	0.5
				+CA	—	—	850	—	—	6	—	—	0.8
				+PVO4c	—	—	1417	—	—	10	—	—	1.3
				+PVO4b	—	—	1700	—	—	12	—	—	1.6
				+PVO4a	—	—	3401	—	—	24	—	—	3.2
				+PVO1-3	—	—	10202	—	—	72	—	—	9.6
50–60	125	177	128	VTO	249	353	255	2	2	2	0.3	0.3	0.3
				+EVTO	498	706	511	4	4	4	0.5	0.5	0.5
				+CA	995	1059	766	8	6	6	1.1	0.8	0.8
				+PVO4c	1742	1764	1277	14	10	10	1.9	1.3	1.3
				+PVO4b	2737	2823	2042	22	16	16	2.9	2.1	2.1
				+PVO4a	3981	4235	3064	32	24	24	4.3	3.2	3.2
				+PVO1-3	7713	8469	9702	62	48	76	8.3	6.4	10
60–70	306	188	157	VTO	612	375	313	2	2	2	0.3	0.3	0.3
				+EVTO	1225	749	626	4	4	4	0.5	0.5	0.5
				+CA	1837	1498	1253	6	8	8	0.8	1.1	1.1
				+PVO4c	3062	2622	1879	10	14	12	1.3	1.9	1.6
				+PVO4b	4900	4869	3758	16	26	24	2.1	3.5	3.2
				+PVO4a	6737	6742	5323	22	36	34	2.9	4.8	4.5
				+PVO1-3	11637	11985	12525	38	64	80	5.1	8.5	11
70–80	393	290	462	VTO	786	579	924	2	2	2	0.3	0.3	0.3
				+EVTO	1572	1158	1847	4	4	4	0.5	0.5	0.5
				+CA	2357	2317	2771	6	8	6	0.8	1.1	0.8
				+PVO4c	3929	3475	3694	10	12	8	1.3	1.6	1.1
				+PVO4b	7072	6950	5541	18	24	12	2.4	3.2	1.6
				+PVO4a	9430	9845	9236	24	34	20	3.2	4.5	2.7
				+PVO1-3	14930	18532	22166	38	64	48	5.1	8.5	6.4

Females, collected from the Galician shelf from December 2011 to November 2012, were divided into four size categories (TL) and each female assigned to a spawning season. Batch fecundity (BF) was estimated as the average of NO_VTO and NO_EVTO. The number of potential batches at each oocyte stage was estimated as (NO_i/BF) × 2. The accumulated number of batches, is the sum of batches from oocyte stage VTO backwards to PVO1-3. The potential fecundity was estimated by multiplying batch fecundity and accumulated potential number of batches. The duration of each spawning season was estimated as the product of accumulated batches and spawning frequency, assumed to be typically every four days for all seasons.

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