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Martin Pastoors PFA horse mackerel research 27/6/2017
Martin Pastoors
PFA horse mackerel research
27/6/2017
Develop new information on horse mackerel
Stock identity
Stock indicators
Genetic analysis
Chemical analysis
Vessel quality analysis
Vessel catch rates
New survey data
Genetic samples during spawning time (2015-2016)
Genetic plan 2017
• Collect one more year of genetic samples
• Analyse genetic material, based on HER6a techniques
Can we use commercial CPUE as indicator of abundance for horse mackerel?
Data: skipper’s ‘diaries’ (haul by haul)
Vessels involved
Decoding the diary entries
Conclusions
• More work needed on analysis of commercial catch rates
• To do:
– Hire post-doc to carry out geospatial analysis (2017)
Conclusions
Stock identity
Stock indicators
Genetics
Potentially powerful method; One more year of dataCarry out analysis
Chemical analysis
Discontinued
Batch analysis
Check progress.
Vessel catch rates
Increasing number of catch histories available. Hire geospatial modeller
New survey data
French CGFS included in assessment.
