Following the Spanish research plan approved by the SC-CCAMLR XXXII, during the second year of the multi-year research survey in Divisions 58.4.1 and 58.4.2, the F/V Tronio has returned to the same places surveyed in the 2012/13 season, as well as expanded the experience westwards to the 58.4.1D and 58.4.1C SSRUs.
A prospective estimation of the local biomass (BLOC) of one localized area that was visited for the commercial Spanish fleet along five seasons in the SSRU 58.4.1C is made, together with the estimation of the total Biomass in the entire SSRU using a depletion model.
There have been some Antarctic toothfish recaptured that would allow, in successive years, to estimate the local abundance by tag-recapture models.
The IEO is starting the process of reading otoliths with ageing purposes, data to be added in order to carry out a robust assessment of Dissostichus eleginoides stock in these divisions.
Results of other data collected such as fish by-catch, incidental catch of benthic taxa or otoliths collection for ageing purposes are also presented.