Evidence of difference in landings and discards patterns in the English Channel and North Sea Rajidae complex fishery

Bycatch species such as skates and rays are for most of them not subject to analytical stock assessment. However, their life history characteristics increased vulnerability fisheries. In the English Channel North Sea area, three main landed Rajidae Raja clavata, brachyura montagui. The current management measure is a global TAC, common all species. Data process assessment available these species, particularly discards data. A Bayesian multispecies biomass production model, following separately landings was applied stocks. This model provided proxies reference points (MSY BMSY) per All stocks were depleted in 1990 now rebuilding. rebuilding speeds different within complex, R. clavata being fastest slowest. Furthermore, proportion differ between highlighting specific fishing strategies. Differences vulnerabilities complex might be caused by variability parameters well pattern differences. second factor, usually considered data limited assessment, relevant highly discarded chondrichthyans when choosing new methodology asses