Patagonian toothfish in the South Indian Ocean outside CCAMLR waters: a preliminary analysis of the SIOFA Patagonian toothfish population

A descriptive analysis of the Patagonian toothfish (Dissostichus eleginoides) population using data collected from observers onboard  two Spanish fishing vessels, obtained between 2017 and May 2019, in international waters of the South Indian Ocean within the FAO areas 51.7 and 57.4 managed by SIOFA, adjacent to the Commission for the Conservation of Antarctic Marine Resources (CCAMLR) convention area is provided in this paper.

Different approaches have been made to define the TOP population features taking into account the depth, latitude, sex and geographic zone. Some differences between the two study areas have been found but differences in temporary distribution of the three surveys could have influenced the results.