1. Estimate biological parameters (growth and natural mortality) required to medel optimal size for two species of Moreton Bay bug

2. Identify physical evidence of the practice of scrubbing ovigerous female bugs, develop expertise in the identificaiton of scrubbed bugs, and model the effects of this practice on yield from the stocks of the two species

3. Determine if a third species is present in the trawl fishery of Mackay and if necessary, its contribution to total bug landings. Initiate attaining of population parameters necessary for optimising the harvesting of the resource.