Investigation of School and Gummy Shark Nursery Areas in South East Tasmania and South East Australia

• Other Authors: CSIRO O&A, Information & Data Centre (pointOfContact), CSIRO Oceans & Atmosphere - Hobart (hasAssociationWith), CSIRO/Oceans and Atmosphere (hasAssociationWith), Data Officer (AR), Hobart (processor)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: biota; Earth Science | Biological Classification | Animals/Vertebrates | Fish; Earth Science | Biosphere | Aquatic Ecosystems | Coastal Habitat; Field Surveys (acquisition and/or analysis); Logbook/Catch Data (acquisition and/or analysis); Coastal Waters (Australia) | Tasmania Coast; TAS; Coastal Waters (Australia) | Victoria Coast; VIC; Investigation of school and gummy shark nursery areas in south eastern Australia (FIRDC project no. 91/23; 93/061) 1991-1999; Henry Bay; antartic*; Squalus acanthias
• Online Access: https://researchdata.edu.au/investigation-school-gummy-east-australia/679194

Progress Code: completed Maintenance and Update Frequency: notPlanned Statement: Bottom-set gillnets 75m long comprising panels of 50, 75 and 102 mm stretch-mesh monofilament and several configurations of longlines were used (FRDC reports 91/23 and 93/061). In 1991-92 sites were restricted to Storm Bay, Frederick Henry Bay and Pittwater. From 1992-97 sampling was extended to a number of sites around Tasmania and Victoria. Credit We wish to thank the Fisheries Research and Development Corporation (FRDC) for funding the research. In addition, Terry Walker, Lauren Brown and Natalie Bridge (from MAFRI, Queenscliff) Credit Bruce Barker, Stephanie Davenport and Mark Green from CSIRO Division of Marine Research, Credit G. J. West and J. D. Stevens School shark pupping areas in inshore waters of Tasmania and Victoria identified by Olsen in the 1940s and 1950s were re-sampled using gillnets & longlines from 1991-97. Current catch rates are much lower at all sites and pups are apparently no longer present at some sites. Additional sampling of mainly inshore embayments in Tasmania and Victoria failed to locate significant new pupping grounds of school shark. Limited sampling in South Australia and Western Australia failed to catch school shark pups. Relatively few gummy shark pups were caught anywhere in this study; no significant pupping grounds were located and pupping appears to take place over scattered locations in inshore waters. Catch data includes a wide variety of sharks, rays and teleosts species, the most numerous being: Squalus megalops, Platycephalus bassensis, Squalus acanthias, Pseudophycis bachus, Aldrichetta forsteri, Mustelus antarticus, Callorhynchus milii, Galeorhinus galeus, Tracurus declivis, Cephaloscyllium laticeps, Neosebastes scorpaenoides, Platycephalus richardsoni, and Sillago bassensis. The fish catch data was taken from school shark nursery areas in Tasmania and Victoria, this study is split into 2 portions, first a 12 month study (91-92), followed by a multi-year study ...