Stock assessments conducted in South Georgia waters include Bayesian age-structured integrated assessment model (Hillary et al., 2006; Hoshino et al., 2011). The last reported stock assessment was conducted in 2009 (See SC-CAMLR-XXVIII). CCAMLR performs CASAL based stock assessments for toothfish in AREA 48.3 within South Georgia waters. CCAMLR sets TACs/quotas for each subarea with GSGSSI allocating individual vessel quotas within the overall CCAMLR quota in South Georgia waters.
Patagonian toothfish stock in South Georgia waters appears to be healthy and overfishing is not occurring.
Current fishing levels are likely to lead towards Bmsy. CCAMLR intends to maintain SSB above 50% of unfished levels (probability 0.5) to ensure probability of SSB being below 20% of unfished levels (with probability not greater than 0.1).
Shust and Kozlov (2006) study has highlighted changes in size composition of the catches of toothfish Dissostichus eleginoides off South Georgia due to longterm long-line fishing in the region resulting in decrease in average size of toothfish over the years, with long-line catches in division 48.3 (South Georgia and Shag Rocks) increasingly dominated by a high percentage of immature fish alluding to decrease in abundance of large sized toothfish in South Georgia waters.