Growth and Survival Rates and Feed Utilization of Orange-spotted grouper Epinephelus coioides Cultured at Different Stocking Densities in Floating Net Cage

Öz

Epinephelus coioides, commonly known as orange-spotted grouper, has potential aquaculture prospects due to its scarcity in the wild and marketability in semi-tropical and tropical regions. A floating net cage system has been demonstrated to be a technically and commercially feasible method of raising fish, allowing for a much higher stocked density of fish. In this study, orange-spotted grouper (E. coioides) was cultivated in a floating net cage fed with trash fish (Decapterus sp. and Sardinella sp.) to determine the effect of stocking density on survival rate (SR) and specific growth rate (SGR). In addition, feed conversion ratio (FCR) and feed intake (FI) were also investigated. Three stocking densities: 20 fish/m3, 30 fish/m3, and 40 fish/m3, were used in the study. Results showed that E. coioides cultured at a stocking density of 20 fish/m3 in a floating net cage gained the highest SGR and SR significantly (p<0.05). FI was significantly lesser (p<0.05) at a stocking density of 30 fish/m3, while FCR was significantly lower (p<0.05) at a stocking density of 40 fish/m3. Thus, this study suggests that a smaller stocking density of 20 fish/m3 is more effective to be used in the culture of grouper E. coioides in a floating net cage.

Anahtar Kelimeler

• Epinephelus coioides
• floating net cage
• growth
• orange-spotted grouper
• stocking density

Kaynakça

1. Aypa, S.M., Baconguis, S.R. (2000) Philippines: mangrove-friendly aquaculture. In: Primavera, J.H., Garcia, L.M.B., Castaños, M.T., Surtida, M.B. (Eds.), Mangrove-friendly aquaculture: Proceedings of the workshop on mangrove-friendly aquaculture organized by the SEAFDEC Aquaculture Department, January 11-15, 1999, Iloilo City, Philippines. pp. 41–56.
2. Baliao, D. D., Franco, N. M., Jamon, N. R. S. (2000) Grouper culture in floating net cages. Aquaculture Department, Southeast Asian Fisheries Development Center.
3. Bardach, J. E., Ryther, J. H., McLarney, W. O. (1972) Aquaculture. The farming and husbandry of freshwater and marine organisms. John Wiley & Sons, Inc.
4. BFAR (2019) Philippine fisheries profile 2018. PCA Compound, Elliptical Road, Quezon City Philippines
5. Bichi, A., Yelwa, S. (2010) Incidence of piscine parasites on the gills and gastrointestinal tract of Clarias gariepinus (teugels) at Bagauda fish farm, Kkano. Bayero Journal of Pure and Applied Sciences, 3(1).
6. Boyd, C. E. (2022) A low feed conversion ratio is the primary indicator of efficient aquaculture. Retrieved from: http://www.globalseafood.org/advocate/a-low-feed-conversion-ratio-is-the-primary-indicator-of-efficient-aquaculture/ November 11, 2022.
7. Cache, A. G. (1976). A general review of cage culture and its application in, Africa. FAO Technical Conference on Aquaculture, Kyoto, Japan, 26 May-2 June 1976. In Tech. Pap. No. FIR: AQ/Conf/76/E (Vol. 72, p. 33).
8. Chua, T. E., Teng, S. K. (1979) Relative growth and production of the estuary grouper Epinephelus salmoides under different stocking densities in floating net-cages. Marine biology, 54(4): 363-372.

9. Coche, A. G. (Ed.). (1994) Aquaculture development and research in Sub-Saharan Africa: national reviews (No. 23). Food & Agriculture Org.
10. Edwards, P. (2000) Aquaculture, poverty impacts and livelihoods. London, UK: Overseas Development Institute.
11. FAO (2020) The State of World Fisheries and Aquaculture 2020; Food and Agriculture Organization: Rome, Italy, 2020.
12. Fry, J. P., Mailloux, N. A., Love, D. C., Milli, M. C., Cao, L. (2018) Feed conversion efficiency in aquaculture: do we measure it correctly?. Environmental Research Letters, 13(2): 024017.
13. Fujiya, M. (1976). Yellowtail (Seriola quinqueradiata) farming in Japan. Journal of the Fisheries Board of Canada, 33(4), 911-915.
14. Fukuhara, O. (1989) A review of the culture of grouper in Japan. Bull. Nansei Reg. Fish. Res. Lab, 22, 47-57.
15. Galzote, G. V., Abrera, E. C. (2007) Growth and yield of the grouper Epinephelus coioides fed 'trash fish' at different rates and frequencies in floating net cages. In T. U. Bagarinao (Ed.), Research Output of the Fisheries Sector Program (Vol. 2. Reports on Fisheries and Aquaculture, pp. 25-27). Quezon City, Philippines: Bureau of Agricultural Research, Department of Agriculture.
16. Howard, K. T. (1974) Trials on rearing systems for marine flatfish cultivation. Fish Farming Int, 3.
17. Hseu, J. R. (2002) Effects of size difference and stocking density on cannibalism rate of juvenile grouper Epinephelus coioides. Fisheries science, 68(6):1384-1386.
18. Kader, M. A., Bulbul, M., Asaduzzaman, M., Abol-Munafi, A. B., Noordin, N. M., Ikhwanuddin, M., Ali, M. E. (2017) Effect of phospholipid supplements to fishmeal replacements on growth performance, feed utilization and fatty acid composition of mud crab, Scylla paramamosain (Estampador 1949). J Sustain Sci Manag, 2017, 47-61.
19. Khalil, L. F., Polling, L. (1997) Check list of the helminth parasites of African freshwater fishes (Ed. 2).
20. Kohno, H., Duray, M., Juario, J. (1988) State of grouper (lapu-lapu) culture in the Philippines. SEAFDEC Asian Aquaculture, 10(2): 4-9.
21. Komatsu, K., Kitanishi, K. (2015) Household Protein Intake and Distribution of Protein Sources in the Markets of Southern Ghana: A Preliminary Report. African Study Monographs.51(3): 157-173.
22. Merino, G., Barange, M., Blanchard, J. L., Harle, J., Holmes, R., Allen, I., Rodwell, L. D. (2012). Can marine fisheries and aquaculture meet fish demand from a growing human population in a changing climate? Global Environmental Change, 22(4), 795-806.
23. Pierre, S., Gaillard, S., Prévot‐D'Alvise, N., Aubert, J., Rostaing‐Capaillon, O., Leung‐Tack, D., Grillasca, J. P. (2008) Grouper aquaculture: Asian success and Mediterranean trials. Aquatic Conservation: Marine and freshwater ecosystems, 18(3): 297-308.
24. Pomeroy, R. S. (2002) The status of grouper culture in Southeast Asia. SPC Live Reef Fish Information Bulletin, (10): 22-26.
25. Powell, M. R. (1972) Cage and raceway culture of striped bass in brackish water in Alabama. In Proceeding of the 26th Annual Conference of the Southeastern Association of Games and Fish Commissions (pp. 553-565).
26. Salari, R., Saad, C. R., Kamarudin, M. S., Zokaeifar, H. (2012) Effects of different stocking densities on tiger grouper juvenile (Epinephelus fuscoguttatus) growth and a comparative study of the flow-through and recirculating aquaculture systems. African Journal of Agricultural Research, 7(26): 3765-3771.
27. Samad, A. P. A., Hua, N. F., Chou, L. M. C. (2014) Effects of stocking density on growth and feed utilization of grouper (Epinephelus coioides) reared in recirculation and flow-through water system. African Journal of Agricultural Research, 9(9): 812-822.
28. Shao, T., Chen, X., Zhai, D., Wang, T., Long, X., Liu, Z. (2019) Evaluation of the effects of different stocking densities on growth and stress responses of juvenile hybrid grouper♀ Epinephelus fuscoguttatus×♂ Epinephelus lanceolatus in recirculating aquaculture systems. Journal of Fish Biology, 95(4): 1022-1029.
29. Tacon, A. (2001) Increasing the contribution of aquaculture for food security and poverty alleviation. In R.P. Subasinghe, P. Bueno, M.J. Phillips, C. Hough, S.E. McGladdery & J.R. Arthur, eds. Aquaculture in the Third Millennium. Technical Proceedings of the Conference on Aquaculture in the Third Millennium, Bangkok, Thailand, 20-25 February 2000. pp.63-72. NACA, Bangkok and FAO, Rome.
30. Tahiluddin, A. B., Terzi, E. (2021b) A review of reported bacterial diseases and antibiotic use in tilapia culture in the Philippines. Acta Nat. Sci, 2(2): 141-147.
31. Tahiluddin, A.B., Kadak, A.E. (2022) Traditional fish processing techniques applied in the Philippines and Turkey. Menba Kastamonu University Faculty of Fisheries Journal, 8(1):50-58
32. Tahiluddin, A.B., Terzi, E. (2021a) An overview of fisheries and aquaculture in the Philippines. Journal of Anatolian Environmental and Animal Sciences, 6(4): 475-486.
33. Teng, S. K., Chua, T. E. (1978). Effect of stocking density on the growth of estuary grouper, Epinephelus salmoides Maxwell, cultured in floating net-cages. Aquaculture, 15(3): 273-287.