Search   in
between years and
Reproductive strategy and fecundity of meagre Argyrosomus regius Asso, 1801 (Pisces: Sciaenidae): implications for restocking programs
María del Mar Gil, Amalia Grau, Gualtiero Basilone, Rosalia Ferreri and Miguel Palmer

Because the meagre (Argyrosomus regius) is not currently found around the Balearic Islands (western Mediterranean), the Balearic government is carrying out a restocking programme to recover its population. The success of this programme is critically dependent on improved knowledge of the meagre’s life cycle, and particularly its reproductive biology. Data on key reproductive parameters based on both reared and wild specimens are reported here. Histological examinations and gonadosomatic indices from 342 reared specimens demonstrated that 1) the potential reproductive season ranged from April to June and peaked in May, and 2) length at maturity (L50) was 49.3 cm for males and 57.2 cm for females, age at maturity (A50) was 2.7 years for males and 3.5 years for females, and weight at maturity (W50) was 1396 g for males and 1892 g for females. Histological examinations of 37 wild fish from Cádiz (SW Spain) demonstrated that the meagre has determinate fecundity. The annual potential fecundity of reared females ranged from 0.9 to 4.2 million oocytes, which is exponentially dependent upon female size.

Keywords: Argyrosomus regius, length at maturity, age at maturity, reproductive season, potential fecundity, Mediterranean Sea
Contents of this volume Sci. Mar. 77(1) : 105-118 Back PDF
Please, send comments to
ICM (CSIC) - Passeig Marítim de la Barceloneta, 37-49. E-08003 Barcelona (Spain)