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Saddletail Snapper (2018)

Lutjanus malabaricus

  • Thor Saunders (Department of Primary Industry and Resources, Northern Territory)
  • Chad Lunow (Department of Agriculture and Fisheries, Queensland)
  • Fabian Trinnie (Department of Primary Industries and Regional Development, Western Australia)
  • Corey Wakefield (Department of Primary Industries and Regional Development, Western Australia)
  • Stephen Newman (Department of Primary Industries and Regional Development, Western Australia)

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Summary

Saddletail Snapper is a widespread species. It is fished across Australia’s north from Shark Bay in WA, to the east coast of QLD. Stocks in WA and northern Australia (NT and QLD) are sustainable. The QLD east coast stock is undefined.

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Stock Status Overview

Stock status determination
Jurisdiction Stock Fisheries Stock status Indicators
Western Australia North Coast Bioregion NDSMF, PFTIMF, PLF, PTMF Sustainable Catch, indicator species status
NDSMF
Northern Demersal Scalefish Managed Fishery (WA)
PFTIMF
Pilbara Fish Trawl (Interim) Managed Fishery (WA)
PLF
Pilbara Line Fishery (WA)
PTMF
Pilbara Trap Managed Fishery (WA)
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Stock Structure

Saddletail Snapper is a widespread Indo-Pacific species found from Shark Bay in Western Australia, across northern Australia to the east coast of Queensland [Newman, 2002]. Genetic studies indicate that the species is comprised of three biological stocks: the North Coast Bioregion biological stock, the Northern Australian biological stock (including the Timor Sea, Arafura Sea and the Gulf of Carpentaria) and the East coast of Queensland biological stock [Elliot 1996, Salini et al. 2006].

Here, assessments of stock status are presented at the biological stock level—North Coast Bioregion (Western Australia), Northern Australia (Northern Territory and Queensland) and East coast Queensland.

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Stock Status

North Coast Bioregion

Saddletail Snapper is caught primarily on the north-west coast of Western Australia as a component of the multispecies Pilbara Demersal Scalefish Fisheries (which includes the Pilbara Fish Trawl (Interim) Managed Fishery, the Pilbara Trap Managed Fishery and the Pilbara Line Fishery) in the Pilbara management region of the North Coast Bioregion; and the Northern Demersal Scalefish Managed Fishery (NDSMF) in the Kimberley management region of the North Coast Bioregion of Western Australia [Newman et al. 2018a]. Saddletail Snapper is assessed on the basis of the status of several indicator species (including Red Emperor and Goldband Snapper in the Kimberley region) considered to provide reliable indices of overall fishing pressure on the entire inshore demersal suite of species occurring at depths of 30–250 m [Newman et al. 2018b].

The major performance measures for these indicator species are estimates of spawning stock levels estimated using an integrated age-structured assessment. The target level of spawning biomass is 40 per cent of the unfished level. The limit level is 30 per cent of the estimate of initial spawning biomass [DPIRD 2017]. Indicator species assessments determined that the spawning biomass levels of each of the indicator species were greater than 40 per cent of the unfished level in the Pilbara Demersal Scalefish Fisheries in 2015, the year the last integrated assessment was undertaken. The spawning biomass levels of the indicator species were either greater than the target level or between the target level and the threshold level in the NDSMF in 2014 [Newman et al. 2018a]. The above evidence indicates that the biomass of this stock is unlikely to be depleted and that recruitment is unlikely to be impaired.

The catch of Saddletail Snapper in the Pilbara Demersal Scalefish Fisheries has been low and stable for the past five years (2013–17), ranging from 72–111 tonnes (t), with a mean annual catch of 85 t. The catch of Saddletail Snapper in the NDSMF has been stable for the past five years (2013–17), ranging from 89–166 t, with a mean annual catch of 116 t. The above evidence indicates that the current level of fishing mortality is unlikely to cause the stock to become recruitment impaired.

On the basis of the evidence provided above, the North Coast Bioregion (Western Australia) biological stock is classified as a sustainable stock.

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Biology

Saddletail Snapper biology [Fry and Milton 2009, Fry et al. 2009, McPherson et al. 1992, McPherson and Squire 1992, Carpenter and Niem 2001, Newman 2002, Newman et al. 2000]

Biology
Species Longevity / Maximum Size Maturity (50 per cent)
Saddletail Snapper Northern and Western Australia: 33 years, 680 mm SL East coast Queensland, 20 years; 1000 mm TL Northern and Western Australia: 9 years, Males 280 mm SL, Females 370 mm SL East coast Queensland: Females 576 mm FL
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Distributions

Distribution of reported commercial catch of Saddletail Snapper – confidential catch is not shown
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Tables

Fishing methods
Western Australia
Commercial
Hand Line, Hand Reel or Powered Reels
Otter Trawl
Unspecified
Fish Trap
Charter
Hook and Line
Recreational
Hook and Line
Management methods
Method Western Australia
Charter
Bag limits
Limited entry
Passenger restrictions
Spatial closures
Spatial zoning
Commercial
Effort limits
Gear restrictions
Limited entry
Spatial closures
Spatial zoning
Total allowable effort
Vessel restrictions
Indigenous
Laws of general application
Recreational
Licence (Recreational Fishing from Boat License)
Possession limit
Spatial closures
Active vessels
Western Australia
18 in Charter, 6 in NDSF, <3 in PFTIMF, 6 in PLF, <3 in PTMF
Charter
Tour Operator (WA)
NDSF
Northern Demersal Scalefish Fishery (WA)
PFTIMF
Pilbara Fish Trawl (Interim) Managed Fishery (WA)
PLF
Pilbara Line Fishery (WA)
PTMF
Pilbara Trap Managed Fishery (WA)
Catch
Western Australia
Commercial 277.92t in NDSMF, PFTIMF, PLF, PTMF
Charter 2.70 t
Indigenous Unknown
Recreational 1.58 t ± 0.584 t se
NDSMF
Northern Demersal Scalefish Managed Fishery (WA)
PFTIMF
Pilbara Fish Trawl (Interim) Managed Fishery (WA)
PLF
Pilbara Line Fishery (WA)
PTMF
Pilbara Trap Managed Fishery (WA)

Western AustraliaActive Vessels Data is confidential as there were fewer than three vessels in Pilbara Fish Trawl Interim Managed Fishery and Pilbara Trap Managed Fishery.

Western Australia – Recreational (Catch) Boat-based recreational catch is from 1 September 2015–31 August 2016. These data are derived from those reported in [Ryan et al. 2017].

Western Australia – Recreational (management methods) A Recreational Fishing from Boat Licence is required for the use of a powered boat to fish or to transport catch or fishing gear to or from a land-based fishing location.

Western Australia – Indigenous (management methods) Subject to the defence that applies under Section 211 of the Native Title Act 1993 (Cth), and the exemption from a requirement to hold a recreational fishing licence, the non-commercial take by Indigenous fishers is covered by the same arrangements as that for recreational fishing.

Northern Territory – Recreational (catch) Saddletail Snapper and Crimson Snapper catch were combined during the Northern Territory 2010 recreational fishing survey [West et al. 2012].

Northern Territory – Charter (management methods) In the Northern Territory, charter operators are regulated through the same management methods as the recreational sector but are subject to additional limits on license and passenger numbers.

Northern Territory – Indigenous (management methods) The Fisheries Act 1988 (NT), specifies that “…without derogating from any other law in force in the Territory, nothing in a provision of this Act or an instrument of a judicial or administrative character made under it limits the right of Aboriginals who have traditionally used the resources of an area of land or water in a traditional manner from continuing to use those resources in that area in that manner”.

Queensland – The reporting period for the commercial Coral Reef Fin Fish Fishery (Queensland) is financial year (2016–17).

Queensland – Indigenous (management methods) Under the Fisheries Act 1994 (Qld), Indigenous fishers in Queensland are entitled to use prescribed traditional and non-commercial fishing apparatus in waters open to fishing. Size and possession limits, and seasonal closures do not apply to Indigenous fishers. Further exemptions to fishery regulations may be applied for through permits.

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Catch Chart

Commercial catch of Saddletail Snapper - note confidential catch not shown
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References

  1. Carpenter, KE and Niem, VH 2001, (Eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol 5. Bony fishes part 3 (Menidae to Pomacentridae). Rome, FAO. 2001. pp 27913380.
  2. DPIRD 2017, North Coast demersal scalefish resource harvest strategy 2017–2021. Version 1.0. Fisheries Management Paper No. 285. Department of Primary Industries and Regional Development, Government of Western Australia, Perth, Australia. 35p.
  3. Elliot, NG 1996, Allozyme and mitochondrial DNA analysis of the tropical saddle-tail sea perch, Lutjanus malabaricus (Schneider), from Australian Waters. Marine and Freshwater Research, 47: 869–876.
  4. Fry, G and Milton, DA 2009, Age, growth and mortality estimates for populations of red snappers Lutjanus erythropterus and L. malabaricus from northern Australia and eastern Indonesia. Fisheries Science, 75: 1219–1229.
  5. Fry, G, Milton, DA, Van Der Velde, T, Stobutzki, I, Andamari, R, Badrudin and Sumiono, B 2009, Reproductive dynamics and nursery habitat preferences of two commercially important Indo–Pacific red snappers Lutjanus erythropterus and L. malabaricus. Fisheries Science, 75: 145–158.
  6. Leigh, GM and O'Neill, MF 2016, Gulf of Carpentaria Finfish Trawl Fishery: Maximum Sustainable Yield, Agri-Science Queensland, Department of Agriculture and Fisheries, Queensland.
  7. Martin, JM 2013, Stock assessment of Saddletail Snapper (Lutjanus malabaricus) in the Northern Territory Demersal and Timor Reef Fisheries, Northern Territory Department of Primary Industry and Fisheries, Darwin, unpublished report.
  8. McPherson, GR and Squire, L 1992, Age and growth of three dominant Lutjanus species of the Great Barrier Reef Inter-Reef Fishery. Asian Fisheries Science, 5: 25–36.
  9. McPherson, GR, Squire, L and O'Brien, J 1992, Reproduction of three dominant Lutjanus species of the Great Barrier Reef Inter-Reef Fishery. Asian Fisheries Science, 5: 15–24.
  10. Newman, SJ 2002, Growth rate, age determination, natural mortality and production potential of the scarlet sea perch, Lutjanus malabaricus Schneider 1801, off the Pilbara coast of north-western Australia, Fisheries Research, 58: 215–225.
  11. Newman, SJ, Brown, JI, Fairclough, DV, Wise, BS, Bellchambers, LM, Molony, BW, Lenanton, RCJ, Jackson, G., Smith, KA, Gaughan, DJ, Fletcher, WJ, McAuley, RB and Wakefield, CB 2018, A risk assessment and prioritisation approach to the selection of indicator species for the assessment of multi-species, multi-gear, multi-sector fishery resources. Marine Policy, 88: 11–22.
  12. Newman, SJ, Cappo, M, Williams, DM 2000, Age, growth, mortality rates and corresponding yield estimates using otoliths of the tropical red snappers, Lutjanus erythropterus, L. malabaricus and L. sebae, from the central Great Barrier Reef. Fisheries Research, 48: 1–14.
  13. Newman, SJ, Wakefield, C, Skepper, C, Boddington, D, Jones, R and Smith, E 2018, North Coast Demersal Resource Status Report 2017. pp. 127–133. In: Gaughan, D.J. and Santoro, K. (eds.). Status Reports of the Fisheries and Aquatic Resources of Western Australia 2016/17: The State of the Fisheries. Department of Primary Industries and Regional Development, Western Australia, Perth, Australia. 237p.
  14. Queensland Department of Agriculture and Fisheries 2018, Queensland Stock status Assessment Workshop Proceedings 2018. Species Summaries. 19–20 June 2018, Brisbane.
  15. Ryan, KL, Hall, NG, Lai, EK, Smallwood, CB, Taylor, S.M., Wise, BS 2017, Statewide survey of boat-based recreational fishing in Western Australia 2015/16. Fisheries research Report No. 287. Department of Primary Industries and Regional Development, Government of Western Australia, Perth. 
  16. Salini, J, Ovenden, J, Street, R, Pendrey, R, Haryantis and Ngurah 2006, Genetic population structure of red snappers (Lutjanus malabaricus Bloch and Schneider, 1801 and Lutjanus erythropterus Bloch, 1790) in central and eastern Indonesia and northern Australia. Journal of Fish Biology, 68(suppl. B): 217–234.
  17. Webley, J, McInnes, K, Teixeira, D, Lawson, A and Quinn, R 2015, Statewide Recreational Fishing Survey 2013-14, Queensland Department of Agriculture and Fisheries, Brisbane.

Downloadable reports

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