Published on 22. March 2018 Predicting sustainable shark harvests when stock assessments are lacking Corey J A Bradshaw, Thomas A A Prowse, Michael Drew, Bronwyn M Gillanders, Steven C Donnellan, Charlie Huveneers, Handling editor: Anna Kuparinen ABSTRACT: Effective fisheries management generally requires reliable data describing the target species’ life-history characteristics, the size of its harvested