Transboundary population structure of sardine, European hake and blackspot seabream in the Alboran Sea and adjacent waters – A multidisciplinary approach
This report stems from the "Transboundary population structure of sardine, European hake and blackspot seabream in the Alboran Sea and adjacent waters" (Transboran) research project carried out under the framework of the regional project CopeMed II of the Food and Agriculture Organization of the United Nations (FAO), in close collaboration with the General Fisheries Commission for the Mediterranean (GFCM).
Seven research institutions from five partner countries (Algeria, Italy, Morocco, Spain and Tunisia) joined forces on a comprehensive and multidisciplinary approach covering different techniques for stock identification and complemented by numerical modelling of hydrodynamic dispersal, spatial information on the fleets targeting the studied species, and field data from an ichthyoplankton survey. All of these disciplines provided information at various contrasting scales to take into account life cycle, demographic and evolutionary processes.
This report presents the main findings of the Transboran project, which show differentiation of sardine and European hake stocks between the northern and southern Alboran Sea and reveal a homogenous population structure for blackspot seabream across the study area. The results therefore support maintaining the current configuration of stocks within their respective geographical subareas (GSAs) for assessment and management purposes.
- Supplementary material on the methodology Part I – Transboran project sampling protocol
- Supplementary material on the methodology Part II – Final report on hydrodynamic modelling
- Supplementary material on the methodology Part III – Final report on hydrodynamic connectivity of European hake habitats
- Supplementary material on the methodology Part IV – Final report on connectivity patterns of blackspot seabream
- Supplementary material on the methodology Part V – Final report on European hake genetics
- Supplementary material on the methodology Part VI – Protocol for analysis of microsatellite loci in sardine
- Supplementary material on the methodology Part VII – Final report on sardine genetics
- Supplementary material on the methodology Part VIII – Final report on blackspot seabream genetics
- Supplementary material on the methodology Part IX – Microchemistry analysis of sardine otoliths
- Supplementary material on the methodology Part X – Microchemistry analysis of European hake otoliths
- Supplementary material on the methodology Part XI – Microchemistry analysis of blackspot seabream otoliths
- Supplementary material on the methodology Part XII – Analysis of European hake otolith shape
- Supplementary material on the methodology Part XIII – Analysis of sardine otolith shape
- Supplementary material on the methodology Part XIV – Final report on morphometric analyses of sardine and European hake
- Supplementary material on the methodology Part XV – Final report on meristic analyses of sardine and European hake
- Additional results Part I – TRANSBORAN-0220 Cruise ichthyoplankton report
- Additional results Part II – Quantification of matrices and calculation of stock differentiation indices for European hake
- Additional results Part III – Quantification of matrices and calculation of stock differentiation indices for sardine