This stock assessment builds on previous assessments that estimated the biomass at 5-10% and 9% in 2016 and 2018 respectively. This assessment estimated the biomass to be 15% in 2021. It includes updates to the input data but keeps the methodology in line with the 2018 assessment

Wortmann, Joanne

English

This assessment estimates the status of saucer scallops in the main fishing grounds of the Queensland Southern Inshore fishery. The stock assessment data inputs included total harvests, standardised catch rates and fishery independent density estimates. The model used data from 1956 to 2020.



Analyses suggested that spawning biomass in 2020 fell to around 12 per cent of the unfished level. The report presents recommendations on fishing effort levels to begin rebuilding the stock to levels consistent with 40 per cent of unfished biomass

Queensland DAF eResearch Archive

Stock Assessment of Ballot's saucer scallop (Ylistrum balloti) in Queensland, Australia

http://era.daf.qld.gov.au/8091/1/Ballot%27s%20saucer%20scallop%20stock%20assessment%20report%202021.pdf

Stock Assessment of Ballot's saucer scallop (Ylistrum balloti) in Queensland, Australia

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Queensland DAF eResearch Archive