Reproductive strategies of common dentex Dentex dentex: management implications
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AuthorsGrau, A. (Amàlia); Saborido-Rey, F. (Fran); Pastor, E. (Elena); Palmer, M. (Miquel); Massutí, E. (Enric); Quetglas, A. (Antoni); Riera, I. (Inmaculada); Morales-Nin, B. (Beatriz)
The common dentex Dentex dentex is an iconic endangered species in the Mediterranean, where it is a target species that is sought after for small-scale, recreational and spearfishing fisheries. The reproductive biology of D. dentex in the natural environ¬ment is poorly known; therefore, the reproductive strategy of the species was assessed through a combination of reproductive traits and growth characteristics (estimated from length-at-age data), the size/age of sexual maturity and the energetic dynamics. A total of 358 wild fish, ranging in total length (LT) from 19 to 84.7 cm, was sampled at Mallorca Island (Western Mediterranean) from March 1996 to June 1999. The sex ratio was skewed towards females (1.361); however, the length composition was not different between sexes (p = 0.551). Three young immature individuals (< 28 cm LT, 0.8% individuals) were rudimentary hermaphrodites, offering support for classification as a late gonochoristic species. The age composition, determined based ...
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