Oral Presentation Australian Society of Fish Biology and Oceania Chondrichthyan Society Conference 2016

Crossing paths and time budgets: pelagic sharks and human activities in Spencer Gulf and the Great Australian Bight (#162)

Paul J Rogers 1 , Micheal Drew 1
  1. SARDI Aquatic Sciences, Henley Beach, SA, Australia

Functional co-existence between humans and large marine predators invloves complex social and practical challenges for the community, industries, and managers of marine resources, threatened and protected species. In 2015, we investigated the time budgets of individual white sharks (Carcharodon carcharias) and bronze whalers (Carcharhinus brachyurus) in gulf and continental shelf areas used by commercial fisheries, fin-fish aquaculture, cage-dive tourism, and the community during recreational activities. Satellite (10, C. carcharias) and acoustic telemetry (134, both spp.) were used at finfish aquaculture leases, in areas used by commercial fisheries, at long-nosed fur seal and Australian sea lion colonies and haul-outs, and hypothesised migration paths and bathymetric features linking these areas and habitats. Bronze whalers and white sharks exhibited dissimilar seasonal patterns of visitation and short-term residency at offshore islands and reefs along isobaths adjacent to fur seal and Australian sea lion colonies, and areas frequented by teleost prey. New data describing the fine- and large-scale movements of white sharks will be presented, which will assist with the ongoing resolution of multi-jurisdictional, regional, and industry-specific management processes.