Biology of Finfish and Shellfish

Observation

Size group (in mm)	Stage I Immature %	Stage II Maturing %	Stage III and IV mature and spawning / partially spent %
101-110	70	20	10
111-120	55	25	20
121-130	40	35	25
131-140	38	30	32
141-150	10	40	50
151-160	16	20	64
161-170	0	20	80
171-180	0	5	95
181-190	0	0	100
191-200	0	0	100
201-210	0	0	100
211-220	0	0	100
221-230	0	0	100
231-240	0	0	100
241-250	0	0	100
251-260	0	0	100
261-270	0	0	100
271-280	0	0	100
281-290	0	0	100
291-300	0	0	100
301-310	0	0	100
311-320	0	0	100
321-330	0	0	100
331-340	0	0	100

Since 50% maturity was recorded first in the class interval 141-150. Hence 141mm is the length at first maturity of Loligo duvauceli.