TRACS Slidecast 1 - Dr Charlie Huveneers (Part 1)
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Transcript of TRACS Slidecast 1 - Dr Charlie Huveneers (Part 1)
The advances of tagging technology
to investigate shark ecology
Dr. Charlie Huveneers
SARDI – Aquatic Sciences
Flinders University
Tagging technology
• Satellite tags (large-scale)
– Position
– Position/depth/temperature
• Archival satellite tags (large-scale)
– Light/depth/temperature
• Acoustic tags (fine- and large-scale)
Satellite tagging
• 20,000 km in 9 months
Mako shark
Pop-up satellite archival tags
South Australian whaler shark fishery
• ‘Bronze whaler’ fishery in South Australia
– ~100 tonnes/year (state fishery)
– ~40 tonnes/year (Commonwealth)
– ~43 tonnes/year (recreational)
• Important fishery during the summer months
• Marine Scalefish Fishery triggers
– 2008 (5 incl. 3rd highest effort, 3rd lowest
CPUE)
– 2009 (4)
• Whalers, especially duskies, potentially susceptible to extensive fishing
• Dusky whaler listed in EPBC Act priority assessment list
• Unknown catch composition (sex, size, and species)
• Unknown connectivity between stocks (WA to NSW)
• Unknown resilience of bronze whaler
• Unknown suitability of management regulations
Dietary analysis of by-catch species from a commercial rock lobster fishery
Acoustic telemetry
© Andrew Fox / Rodney Fox Shark Expeditions
Acoustic receiver
CoastNo detection
Organism detected
Receiver locations
AATAMS