Tristan Group Biomass Survey results of Jasus tristani including data from the 2022 season.

This paper reports the updated biomass indices (to include the 20221 season) obtained from the annual biomass survey at each island. The Tristan biomass has shown a steady increase since 2015. Survey results at Inaccessible and Gough have been steady over recent years, with a slight decline in 2022 at Inaccessible and a slight increase at Gough. The 2022 Nightingale survey has however declined to its lowest level since the OLIVA event in 2011, though this is similar to pre-OLIVA values. The percentage of females in the catch at Gough (around 25-35%) is much higher that at the other three islands (around 5-15%). The high percent females observed in the survey at Tristan in 2021 has not been repeated, with the 2022 value back within the normal range.