Gummy sharks and school sharks are aged by counting growth-increment bands on the articular faces of vertebrae stained with alizarin red. The age data are required for application of age-structured fishery assessment models used by the Southern Shark Fishery Assessment Group for stock advice to the...
There is increasing worldwide concern about the ecological impacts of trawling. Reports of high levels of bycatch of fish and other species, habitat degradation, bad practices, stock depletion and perceptions of wastage and negative ecological impacts continue to fuel these concerns. ...