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Length-based stock assessment of the pacific yellowtail emperor in the Southern Sulawesi, Indonesia

  • I Nyoman Suyasa (Department Fisheries Resources Management, Jakarta Technical University of Fisheries (Poltek AUP)) ;
  • Alifah Fitam Rakhma Sari (Department Fisheries Resources Management, Jakarta Technical University of Fisheries (Poltek AUP)) ;
  • Siska Agustina (Fisheries Resource Center of Indonesia) ;
  • Rian Prasetia (Fisheries Resource Center of Indonesia) ;
  • Ratna Suharti (Department Fisheries Resources Management, Jakarta Technical University of Fisheries (Poltek AUP)) ;
  • Toni Ruchimat (Department Fisheries Resources Management, Jakarta Technical University of Fisheries (Poltek AUP)) ;
  • Budy Wiryawan (Fisheries Resource Center of Indonesia) ;
  • Irfan Yulianto (Fisheries Resource Center of Indonesia)
  • Received : 2022.11.29
  • Accepted : 2023.02.10
  • Published : 2023.03.31

Abstract

Pacific yellowtail emperor, Lethrinus atkinsoni Seale, 1910, is one of the most targeted reef fish species in Southern Sulawesi, Indonesia. Therefore, assessing its stock is important to understand the condition of the population, providing valuable inputs for sustainable fisheries management in the area. Here we assess the stock condition of L. atkinsoni in Southern Sulawesi, Indonesia, using the length-based spawning potential ratio model. A total of 4,887 individuals were collected from commercially small-scale fishers from January to October 2022. The total length, sex, and gonad maturity of the individuals were examined. We observed that the fish length ranged from 10.5 to 39.5 cm, with an average length of 23.3 cm. The sex ratio was equal (1:1.2) between male and female individuals. Length at first maturity and length at first capture were 23.4 and 19.6 cm, respectively. In addition, we observed a growth coefficient of 0.45/year, with an asymptotic length of 41.14 cm and natural mortality of 0.6/year. Based on these life history parameters, we observed the spawning potential ratio (SPR) value of 12%, indicating an unsustainable fishery level (SPR of < 30%). Further concerns related to the sustainability of the species and strategy to rebuild stock of the L. atkinsoni in Southern Sulawesi are of utmost importance.

Keywords

Acknowledgement

We thank local fishers and traders in the Tarupa, Rajuni, and Latondu villages in Southern Sulawesi, Indonesia, for their support in conducting data collection.

References

  1. Agustina S, Hartati ID, Gunar ANF, Sudarman, Muchtar I, Rahmayanti R, et al. Technical report on reef fisheries conditions in the Taka Bonerate National Park. Bogor: Wildlife Conservation Society; 2021.
  2. Agustina S, Panggabean AS, Natsir M, Retroningtyas H, Yulianto I. Yield-per-recruit modelling as biological reference points to provide fisheries management of leopard coral grouper (Plectropomus leopardus) in Saleh Bay, West Nusa Tenggara. IOP Conf Ser: Earth Environ Sci. 2019;278:012005.
  3. Alonzo SH, Mangel M. The effects of size-selective fisheries on the stock dynamics and sperm limitation in sex-changing fish. Fish Bull. 2004;102:1-13.
  4. Ault JS, Smith SG, Luo J, Monaco ME, Appeldoorn RS. Lengthbased assessment of sustainability benchmarks for coral reef fishes in Puerto Rico. Environ Conserv. 2008;35:221-31. https://doi.org/10.1017/S0376892908005043
  5. Campbell SJ, Kartawijaya T, Yulianto I, Prasetia R, Clifton J. Co-management approaches and incentives improve management effectiveness in the Karimunjawa National Park, Indonesia. Mar Policy. 2013;41:72-9. https://doi.org/10.1016/j.marpol.2012.12.022
  6. Carpenter KE, Allen GR. FAO Species Catalogue. Vol. 9. Emperor Fishes and Large-Eye Breams of the World (Family Lethrinidae). An Annotated and Illustrated Catalogue of Lethrinid Species Known to Date. FAO Fisheries Synopsis No. 125, 1989;9:118.
  7. Collie JS, Gislason H. Biological reference points for fish stocks in a multispecies context. Can J Fish Aquat Sci. 2001;58:2167-76. https://doi.org/10.1139/f01-158
  8. Currey LM, Williams AJ, Mapstone BD, Davies CR, Carlos G, Welch DJ, et al. Comparative biology of tropical Lethrinus species (Lethrinidae): challenges for multi-species management. J Fish Biol. 2013;82:764-88. https://doi.org/10.1111/jfb.3495
  9. Ebisawa A. Reproductive and sexual characteristics in the pacific yellowtail emperor, Lethrinus atkinsoni, in waters off the Ryukyu Islands. Ichthyol Res. 1999;46:341-58. https://doi.org/10.1007/BF02673977
  10. Effendie MI. Biologi perikanan. Yogyakarta: Yayasan Pustaka Nusatama; 1997.
  11. Fatma, Mallawa A, Najamuddin, Zainuddin M, Ayyub FR. A study of brown-marbled grouper (Epinephelus fuscoguttatus) population dynamics in Takabonerate National Park Waters, South Sulawesi, Indonesia. Biodiversitas. 2021;22:4298-307. https://doi.org/10.13057/biodiv/d221022
  12. Food and Agriculture Organization of the United Nations [FAO]. The state of world fisheries and aquaculture 2020: sustainability in action. Rome: FAO; 2020.
  13. Froese R. Life-history strategies of recent fishes: a meta-analysis [Ph.D. dissertation]. Kiel: Christian-Albrecht University of Kiel; 2005.
  14. Froese R, Pauly D. Lethrinus atkinsoni Seale 1910, pacific yellowtail Emperor [Internet]. Fishbase. 2022 [cited 2022 Nov 17]. https://www.fishbase.se/summary/1854
  15. Gislason H, Daan N, Rice JC, Pope JG. Size, growth, temperature and the natural mortality of marine fish. Fish Fish. 2010;11:149-58. https://doi.org/10.1111/j.1467-2979.2009.00350.x
  16. Hordyk A, Ono K, Valencia S, Loneragan N, Prince J. A novel length-based empirical estimation method of spawning potential ratio (SPR), and tests of its performance, for smallscale, data-poor fisheries. ICES J Mar Sci. 2015;72:217-31. https://doi.org/10.1093/icesjms/fsu004
  17. Indonesian Ministry of Marine Affairs and Fisheries [MMAF]. The decision of the Indonesian minister of marine and fisheries number 19 in 2022: estimation of potential fish resources, number of fish catches allowed, and utilization rate of fish resources in the fisheries management areas of the Republic of Indonesia [Internet]. MMAF. 2022 [cited 2022 Oct 27]. https://kkp.go.id/an-component/media/upload-gambar-pendukung/DitJaskel/peraturan/Kepmen%20KP%20Nomor%2019%20Tahun%202022%20tentang%20Estimasi%20Potensi%2C%20JTB%20dan%20Tingkat%20Pemanfaatan%20SDI%20di%20WPPNRI.pdf
  18. Kenney JF, Keeping ES. Mathematics of statistics: part 2. New York, NY: D. van Nostrand Princeton; 1951. p. 330-32.
  19. Klein M, van Beveren E, Rodrigues D, Serrao EA, Caselle JE, Goncalves EJ, et al. Small scale temporal patterns of recruitment and hatching of Atlantic horse mackerel (L.) at a nearshore reef area. Fish Oceanogr. 2018;27:505-16. https://doi.org/10.1111/fog.12269
  20. Lagler KE, Bardach JE, Miller RR. Ichthylogy. New York, NY: John Wiley and Sons; 1962.
  21. Malik MDA, Kholilah N, Kurniasih EM, Sembiring A, Pertiwi NPD, Ambariyanto A, et al. Biodiversity of cryptofauna (decapods) and their correlation with dead coral Pocillopora sp. volume at Bunaken Island, North Sulawesi. IOP Conf Ser: Earth Environ Sci. 2018;116:012053.
  22. Mayunar. The economically important reef fishes for export and its potential commodities for aquaculture. Oseana. 1996;21:23-31.
  23. Mildenberger TK, Taylor MH, Wolff M. TropFishR: an R package for fisheries analysis with length-frequency data. Methods Ecol Evol. 2017;8:1520-27. https://doi.org/10.1111/2041-210X.12791
  24. Muhidin, Pardede S, Apriliano VJ, Rizki PH. Status of reef ecosystem in Taka Bonerate National Park in 2019. Bogor: Wildlife Conservation Society-Indonesia Program; 2021.
  25. Nikolskii GV. The ecology of fishes. London: Academic Press; 1963.
  26. Panuluh GD, Refah B, Arifin M, Tavo MH, Yulianto S. Marine protected area management: case study of the Jinato Island, Taka Bonerate National Park. In: Seminar Nasional Tantangan dan Peluang Pengelolaan Perikanan Kelautan Berkelanjutan Menyongsong Sustainable Development Goals (SDG's); 2019; Malang.
  27. Pauly D. Fish population dynamics in tropical waters: a manual for use with programmable calculators. Manila: International Center for Living Aquatic Resources Management; 1984.
  28. Pauly D. On the interrelationships between natural mortality, growth parameters, and mean environmental temperature in 175 fish stocks. ICES J Mar Sci. 1980;39:175-92. https://doi.org/10.1093/icesjms/39.2.175
  29. Prihatiningsih, Muchlis N, Pane ARP, Herlisman, Hartati ST. Reproductive and growth of pacific yellowtail emperor (Lethrinus atkinsoni Seale, 1910) in Wakatobi waters, Southeast Sulawesi. Bawal. 2021;13:111-22.
  30. Restiangsih YH, Amri K. Biological aspects and food habits of skipjack tuna (Katsuwonus pelamis) in flores sea and adjacent waters. Bawal. 2019;10:187-96.
  31. Restiangsih YH, Muchlis NDN. Biological aspects of pink ear emperor, Lethrinus lentjan (Lacepede, 1802) in Bangka and adjacent waters. J Iktiologi Indones. 2019;19:115-26.
  32. Rizal M, Munandar, Jaliadi. Characteristics of reef fishing landed in landing fish Ujong Baroh in Aceh Regency. J Perikanan Terpadu. 2018;1:53-65.
  33. Rumania AG, Mosse JW, Ongkers OTS. Population parameters of some reef fishes in the East Seram sub-district waters. Agrikan: J Agro Fish. 2020;12:360-8. https://doi.org/10.29239/j.agrikan.12.2.360-368
  34. Sari I, Ichsan M, White A, Raup SA, Wisudo SH. Monitoring small-scale fisheries catches in Indonesia through a fishing logbook system: challenges and strategies. Mar Policy. 2021;134:104770.
  35. Sparre P, Venema CS. Introduction to tropical fish stock assessment: part I: manual. Rome: FAO; 1998.
  36. Udupe KS. Statistical method of estimating the size at first maturity in fishes. Fishbyte. 1986;4:8-10.
  37. Utama FG, Atmadipoera AS, Purba M, Sudjono EH, Zuraida R. Analysis of upwelling event in Southern Makassar strait. IOP Conf Ser: Earth Environ Sci. 2017;54: 012085.
  38. West G. Methods of assessing ovarian development in fishes: a review. Austral J Mar Freshw Res. 1990;41:199-222. https://doi.org/10.1071/MF9900199
  39. Wiyono ES. Reorientation of small-scale fisheries management [Internet]. 2011 [cited 2022 Nov 10]. http://repository.ipb.ac.id/handle/123456789/53708
  40. Wootton RJ. Energetics of reproduction. In: Tytler P, Calow P, editors. Fish energetics: new perspectives. Dordrecht: Springer. p. 231-54.
  41. Young PC, Martin RB. Evidence for protogynous hermaphroditism in some lethrinid fishes. J Fish Biol. 1982;21:475-84.  https://doi.org/10.1111/j.1095-8649.1982.tb02853.x