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- Title
Changes in spawning-stock structure and recruitment pattern of red mullet, Mullus barbatus, after a trawl ban in the Gulf of Castellammare (central Mediterranean Sea).
- Authors
Fiorentino, F.; Badalamenti, F.; D'Anna, G.; Garofalo, G.; Gianguzza, P.; Gristina, M.; Pipitone, C.; Rizzo, P.; Fortibuoni, T.
- Abstract
Fiorentino, F., Badalamenti, F., D’Anna, G., Garofalo, G., Gianguzza, P., Gristina, M., Pipitone, C., Rizzo, P., and Fortibuoni, T. 2008. Changes in spawning-stock structure and recruitment pattern of red mullet, Mullus barbatus, after a trawl ban in the Gulf of Castellammare (central Mediterranean Sea). – ICES Journal of Marine Science, 65: 1175–1183.The increase in biomass of red mullet, Mullus barbatus, in the Gulf of Castellammare (northwestern Sicily, central Mediterranean) after a 14-year trawl ban, prompted us to compare the spawning-stock structure and the recruitment pattern before and after the closure. Datasets obtained from three experimental trawl surveys were available before the ban (April and September 1985; April–May 1986) and four post-ban (September and November 2004; March and May 2005). Spawning-stock biomass increased significantly after the ban. Moreover, females at depths >50 m in the post-ban period were larger than those collected before the ban at the same depth. The recruitment pattern of the population also changed. Notably, recruit numbers increased and recruitment occurs over a broader period. The increase in biomass after the trawl ban seems to be the result of a combination of different processes, mainly associated with the lowering of fishing mortality. A positive trend in sea surface temperature in the area may have played a role too.
- Subjects
GULF of Castellammare (Italy); ITALY; MULLUS barbatus; MULLIDAE; SPAWNING; TRAWLING
- Publication
ICES Journal of Marine Science / Journal du Conseil, 2008, Vol 65, Issue 7, p1175
- ISSN
1054-3139
- Publication type
Article
- DOI
10.1093/icesjms/fsn104