Northern Pelagic Shark Tagging Data 1983-1985 (releases), 1983-1997 (recaptures), tropical waters of Australia

doi:10.15468/dqrnhr

Northern Pelagic Shark Tagging Data 1983-1985 (releases), 1983-1997 (recaptures), tropical waters of Australia

Citation

Northern Pelagic Shark Tagging Data 1983-1985 (releases), 1983-1997 (recaptures) (1997) CSIRO Northern Pelagic Fish Stock Research Project. https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/4980d04a-9329-4b16-a13d-03b96e6c8660 https://doi.org/10.15468/dqrnhr accessed via GBIF.org on 2025-06-24.

Description

Between February 1983 and May 1985, some 10 500 sharks of 23 species were fin-tagged off northern Australia. Tagging concentrated on the commercially important Carcharhinus tilstoni and C. sorrah. Most recaptures were made in 1984 and 1985, but returns continued until May 1997. In all 579 tags (5.5%) were recovered. Tag shedding was estimated to be low (0.025 year1 for C. tilstoni) and tagging mortality was significantly lower for sharks caught by handline than by gillnet. Australian gillnetters, Taiwanese gillnetters (fishing in the Australian Fishing Zone) and Australian prawn trawlers accounted for most of the returns. The maximum distance between the release and recapture positions was over 1100 km, but most returns were made within 50 km of the tagging site. Nearly all of the releases were in inshore waters fished by Australian vessels. Although substantial numbers of recaptures were made by the offshore Taiwanese fishery, when fishing effort was considered, relatively few sharks appeared to move from inshore to offshore waters. This dataset contains the release and recapture information for all tag events and was collected as part of the CSIRO Northern Pelagic Fish Stock Research Project.

Taxonomic Coverages

Sharks

Carcharhinus amblyrhynchos
rank: species
Carcharhinus amboinensis
rank: species
Carcharhinus brevipinna
rank: species
Carcharhinus coatesi
rank: species
Carcharhinus fitzroyensis
rank: species
Carcharhinus macloti
rank: species
Carcharhinus sorrah
rank: species
Carcharhinus tilstoni
rank: species
Eusphyra blochii
rank: species
Galeocerdo cuvier
rank: species
Rhizoprionodon acutus
rank: species
Rhizoprionodon taylori
rank: species
Sphyrna lewini
rank: species
Sphyrna mokarran
rank: species

Geographic Coverages

Kimberleys to Great Barrier Reef, Australia

Bibliographic Citations

Contacts

Data Officer
originator
position: Manager
CSIRO National Collections and Marine Infrastructure Data Centre
Hobart
AU
email: data-requests-hf@csiro.au
homepage: https://research.csiro.au/ncmi-idc/

Data Officer
metadata author
position: Manager
CSIRO National Collections and Marine Infrastructure Data Centre
Hobart
AU
email: data-requests-hf@csiro.au
homepage: https://research.csiro.au/ncmi-idc/

OBIS Australia Node manager
publisher
position: OBIS Australia Data Manager
CSIRO National Collections and Marine Infrastructure Data Centre
Castray Esplande
Hobart
7000
Tasmania
AU
email: obisau@csiro.au
homepage: http://www.obis.org.au

Data Officer
administrative point of contact
position: Manager
CSIRO National Collections and Marine Infrastructure Data Centre
Hobart
AU
email: data-requests-hf@csiro.au
homepage: https://research.csiro.au/ncmi-idc/