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Article Dans Une Revue Bulletin of Marine Science Année : 2016

Catch variation and demographic structure of common dentex (Sparidae) exploited by Mediterranean artisanal fisheries

Résumé

The common dentex Dentex dentex (Linnaeus, 1758) is an iconic marine coastal fish found in the Mediterranean Sea. Despite its ecological and economic importance, scientific data on its exploitation are still very scarce. The aim of this study is to: (i) analyze the relationship between the catch per unit effort (CPUE) and possible factors that might have caused the trends observed, (ii) study the temporal and spatial trends in CPUE, (iii) identify the spatial distribution of catches, and (iv) compare the size and age structure of catches. CPUE varies over spatial and temporal scales but shows annual stability. The study reveals that CPUE varies significantly as a function of month, strata and depth. Our results show a seasonal pattern of captures during the spawning period (May) and the associated size class is mainly composed of mature individuals. The length and age frequency histograms of the common dentex show that after the spawning period (June-September) exploitation is mostly made up of small/young and immature individuals. Our spatial approach reveals a heterogeneous catch distribution and identifies important exploitation areas. A combination of management tools and specific measures to safeguard the reproductive potential of this species should be promoted.
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Dates et versions

hal-01320665 , version 1 (26-05-2016)

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Michel Marengo, Anthony Pere, Bernard Marchand, Pierre Lejeune, Eric D H Durieux. Catch variation and demographic structure of common dentex (Sparidae) exploited by Mediterranean artisanal fisheries. Bulletin of Marine Science, 2016, ⟨10.5343/bms.2015.1041⟩. ⟨hal-01320665⟩
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