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School Mackerel (2020)

Scomberomorus queenslandicus

  • Alice Pidd (Department of Agriculture and Fisheries, Queensland)
  • Julian Hughes (Department of Primary Industries, New South Wales)
  • Paul Lewis (Department of Primary Industries and Regional Development, Western Australia)
  • Grant Johnson (Department of Primary Industry and Resources, Northern Territory)
  • Thor Saunders (Department of Industry, Tourism and Trade, Northern Territory)

Date Published: June 2021

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Summary

School Mackerel occurs in continental shelf waters across the northern and eastern coasts of Australia. One biological stock is sustainable, two are negligible and one is undefined.

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Stock Status Overview

Stock status determination
Jurisdiction Stock Stock status Indicators
Northern Territory Northern Australia Negligible Catch, Effort, Current and historical fishing pressure
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Stock Structure

School Mackerel occur in continental shelf waters, often associated with coastal embayments, across the northern and eastern coasts of Australia [Collette and Russo 1984]. Concurrent spawning of fish in geographically dispersed locations may indicate reproductive isolation. In addition, hydrological conditions within embayments may reduce mixing of pelagic eggs and larvae along the coastline. These characteristics result in a complex stock structure for School Mackerel [Begg et al. 1997, Begg et al. 1998a,b, Begg and Sellin 1998]. Off the east Australian coast, genetic dissimilarity, restricted movement patterns, concurrent spawning at multiple locations and regional differences in growth and otolith composition indicate the presence of at least two stocks between 16°S and 28°S [Begg et al. 1997, Begg et al. 1998a,b, Begg and Sellin 1998]. East coast stocks are considered to occupy the following latitudinal ranges: North Eastern Australia – Townsville (19°30’S) to Coen (14°00’S); Central Eastern Australia – Mackay (20°30’S) to Townsville (19°30’S); and South Eastern Australia – Tweed (28°00’S) to Mackay (20°30’S). Stock boundaries for the Northern Australia stock are less certain, spanning jurisdictions from Northern Queensland, across the Northern Territory, to Northern Western Australia.

Here, the assessment of stock status is presented at the biological stock level—Northern Australia, North Eastern Australia, Central Eastern Australia and South Eastern Australia.

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Stock Status

Northern Australia

School Mackerel is broadly distributed across northern Australia with components of this stock occurring in Western Australia, Northern Territory and Queensland [Begg et al. 1998a]. However, School Mackerel is not a major component of commercial or recreational landings. Stock status for the Northern Australia biological stock is reported as Negligible due to historically low catches across all jurisdictions, and the stock has not been the subject of targeted fishing.

The Western Australian Mackerel Managed Fishery predominantly targets Spanish Mackerel (Scomberomorus commerson) with gear, and in locations, not conducive to catching School Mackerel. Western Australian commercial and charter boat catches of School Mackerel in 2008–19 averaged less than 0.3 t and 0.5 t per year respectively. School Mackerel is not a major component of Western Australian recreational landings, with an estimated retained catch of 1.4 t (± 0.4 t se) in 2017–18 [Ryan et al. 2019]. In the Northern Territory there has been no reported recreational catch in recent years [Matthews et al. 2019] and the commercial catch has averaged 50 kg per year over the last 10 years, with a maximum harvest of 305kg in 2016. In Queensland Gulf of Carpentaria waters there is limited recreational catch and commercial catches have been <0.1 t per year for the last three years [QFISH 2020, Teixeira et al. 2021]. This low level of fishing is unlikely to be having a negative impact on the stock.

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Biology

School Mackerel biology [Begg 1996, Begg 1998, Begg and Hopper 1997, Begg and Sellin 1998, Begg et al. 1998a, Collette and Russo 1984, Munro 1943]

Biology
Species Longevity / Maximum Size Maturity (50 per cent)
School Mackerel 10 years, 1 180 mm TL, 11.2 kg Females 1–2 years, 60–510 mm TL Males 1–2 years, 410–460 mm TL
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Distributions

Distribution of reported commercial catch of School Mackerel
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Tables

Fishing methods
Northern Territory
Commercial
Gillnet
Charter
Hook and Line
Indigenous
Hook and Line
Recreational
Hook and Line
Management methods
Method Northern Territory
Charter
Gear restrictions
Limited entry
Possession limit
Spatial closures
Commercial
Limited entry
Spatial closures
Recreational
Gear restrictions
Possession limit
Spatial closures
Catch
Northern Territory
Commercial 1.00kg
Charter <0.1 t
Indigenous Unknown
Recreational 0

Queensland – recreational (catch) Estimated from Teixeira et al. [2021] (38 859 fish retained by QLD residents) and an average weight of 2 kg.

Queensland – Indigenous (management methods) for more information see https://www.daf.qld.gov.au/business-priorities/fisheries/traditional-fishing

New South Wales – Recreational (Catch) Murphy et al. [2020] 

New South Wales – Indigenous (management methods)  https://www.dpi.nsw.gov.au/fishing/aboriginal-fishing

Western Australia – Recreational (Catch) Statewide survey of boat-based recreational fishing in Western Australia 2017–18 [Ryan et al. 2019]. Shore- based catch (if any) largely unknown.

Western Australia – Recreational (Management methods) Boat-based recreational fishing licence required.

Western Australia – Charter (Catch) The charter catch is an estimate based on numbers of fish caught multiplied by an average weight.

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Catch Chart

Commercial catch of School Mackerel - note confidential catch not shown
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References

  1. Begg, G 1996, Species coexistence, stock structure and fisheries management of School (Scomberomorus queenslandicus) and Spotted mackerel (S. munroi) in Queensland east coast waters. Doctoral Thesis, University of Queensland, Brisbane, Australia.
  2. Begg, GA 1998, Reproductive biology of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in Queensland east-coast waters', Marine and Freshwater Research, 49(3): 261–270.
  3. Begg, GA and Hopper, GA 1997, Feeding patterns of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in Queensland east-coast waters', Marine and Freshwater Research, 48(7): 565–571.
  4. Begg, GA and Sellin, MJ 1998, Age and growth of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in Queensland east-coast waters with implications for stock structure, Marine and Freshwater Research, 49(2): 109–120.
  5. Begg, GA, Cameron, DS and Sawynok, W 1997, Movements and stock structure of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in Australian east-coast waters, Marine and Freshwater Research, 48(4): 295–301.
  6. Begg, GA, Cappo, M, Cameron, DS, Boyle, S, and Sellin, MJ 1998, Stock discrimination of school mackerel, Scomberomorus queenslandicus, and spotted mackerel, Scomberomorus munroi, in coastal waters of eastern Australia by analysis of minor and trace elements in whole otoliths, Fishery Bulletin, 96(4): 653–666.
  7. Begg, GA, Keenan, CP and Sellin, MJ 1998, Genetic variation and stock structure of school mackerel and spotted mackerel in northern Australian waters, Journal of Fish Biology, 53(3): 543–559.
  8. Collette, BB and Russo, JL 1984, Morphology, systematics, and biology of the Spanish mackerels (Scomberomorus, Scombridae), Fishery Bulletin, 82: 545–689.
  9. Litherland, L, Lewis, P, Johnson, G, Hughes, J, 2018, School Mackerel Scomberomorus queenslandicus, in Carolyn Stewardson, James Andrews, Crispian Ashby, Malcolm Haddon, Klaas Hartmann, Patrick Hone, Peter Horvat, Stephen Mayfield, Anthony Roelofs, Keith Sainsbury, Thor Saunders, John Stewart, Simon Nicol and Brent Wise (eds) 2018, Status of Australian fish stocks reports 2018, Fisheries Research and Development Corporation, Canberra.
  10. Lovett, R, Bessell-Browne, P, Litherland, L, Leigh, G, Campbell, A, O’Neill, MF 2019, Stock assessment of Queensland east coast school mackerel (Scomberomorus queenslandicus). Department of Agriculture and Fisheries, Queensland Government, Brisbane, Queensland
  11. Munro, ISR 1943, Revision of Australian species of Scomberomorus, Memoirs of the Queensland Museum, vol. 12, pp. 65–95.
  12. Murphy, JJ, Ochwada-Doyle, FA, West, LD, Stark, KE and Hughes JM, 2020, The Recreational Fisheries Monitoring Program. Survey of recreational fishing in 2017–18, Fisheries final report series 158, NSW Department of Primary Industries, Wollongong.
  13. Punt, AE, Butterworth, DS and Penney, AJ 1995, Stock assessment and risk analysis for the South Atlantic population of albacore Thunnus alalunga using an age structured production model’ South African Journal of Marine Science, 16(1): 287–310.
  14. QFish, Department of Agriculture and Fisheries, www.qfish.gov.au
  15. Ryan, KL, Hall, NG, Lai, EK, Smallwood, CB, Tate, A, Taylor, SM and Wise, BS 2019, State-wide survey of boat based recreational fishing in Western Australia 2017/18, Fisheries Research Report 297, Department of Primary Industries and Regional Development, Western Australia. 
  16. Taylor, S, Webley, J, McInnes, K 2012, 2010 Statewide Recreational Fishing Survey. Fisheries Queensland, Department of Agriculture and Fisheries.
  17. Teixeira, D, Janes, R, and Webley, J 2021, 2019–20 Statewide Recreational Fishing Survey Key Results. Project Report. State of Queensland, Brisbane.
  18. Webley, J, McInnes, K, Teixeira, D, Lawson, A and Quin, R 2015, Statewide Recreational Fishing Survey 2013-2014. Fisheries Queensland, Department of Agriculture and Fisheries.
  19. West, LD, Lyle, JM, Matthews, SR, Stark, KE and Steffe, AS 2012, Survey of Recreational Fishing in the Northern Territory, 2009–.10. Department of Primary Industry and Fisheries. Darwin
  20. West, LD, Stark, KE, Murphy, JJ, Lyle, JM and Ochwada-Doyle, FA 2015, Survey of recreational fishing in New South Wales and the ACT, 2013–14, Fisheries final report series 149, NSW Department of Primary Industries, Wollongong.

Downloadable reports

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