Abstract
The main objectives of this study were to estimate the age and growth of reared Atlantic bluefin tuna and to reveal possible differences in growth between reared and wild specimens. A total of 806 specimens, ranging from 102 to 284 cm in length, were sampled from a Greek tuna farm in the Mediterranean Sea. The first spine of the first dorsal fin was used to estimate the age. Estimated ages ranged from 3 to 20 years, and the reproducibility of the ageing method was high. The proportion of the mean number of missing annuli per age due to vascularization ranged from 27.8 to 40.0%, with an average loss of 33.5%. No significant differences in the number of missing annuli were observed between 6–month and 18–month reared specimens of the same age group. The von Bertalanffy growth model was fitted a) to mean FL-at-age data and b) to mean RW-at-age data, and the growth equations found were: Lt = 296.6[1 – e(−0.114) (t + 1.026)] and Wt = 591.6[1 – e(−0.100)(t + 1.755)]3. Our results showed that the rearing process accelerates the growth of the Atlantic bluefin tuna and this was also evident in the calcified structure. In comparison with previous studies of growth in wild bluefin tuna from the Mediterranean Sea, mean weights at age of the reared fish were higher than those from wild fish in all age groups and lengths at age of the reared bluefin tuna were higher in younger fish, up to 6 years old.
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REFERENCES
Abascal, F.J., Medina, A., De La Serna, J.M., et al., Tracking bluefin tuna reproductive migration into the Mediterranean Sea with electronic pop-up satellite archival tags using two tagging procedures, Fish. Ocean., 2016, vol. 25, pp. 54–66. https://doi.org/10.1111/fog.12134
Ailloud, L.E., Lauretta, M.V., Hanke, A.R., et al., Improving growth estimates for Western Atlantic bluefin tuna using an integrated modeling approach, Fish. Res., 2017, vol. 191, pp.17–24. https://doi.org/10.1016/j.fishres.2017.02.013
Akaike, H., Information theory and an extension of the maximum likelihood principle, Proceedings of the Second International Symposium on information theory, Petrov B.N. and Csaki F. Eds., Budapest: Akademiai Kiado, 1973, pp. 267–281. https://doi.org/10.1007/978-1-4612-1694-0_15
Beamish, R.J., and Fournier, D.A., A method of comparing the precision of a set of age determinations, Can. J. Fish. Aquat. Sci., 1981, vol. 38, pp. 982–983. https://doi.org/10.1139/f81-132
Block, B.A., Teo, S.L.H., Walli, A., et al., Electronic tagging and population structure of Atlantic bluefin tuna, Nature, 2005, vol. 434, pp. 1121–1127. https://doi.org/10.1038/nature03463
Campana, S.E., Accuracy, precision and quality control in age determination, including a review of the use and abuse of age validation methods, J. Fish Biol., 2001, vol. 59, pp. 197–242. https://doi.org/10.1111/j.1095-8649.2001.tb00127.x
Cayré, P., and Diouf, T., Croissance de la thonine, Euthynnus alleteratus (Rafinesque 1810), e´tablie a` partir de coupes transversals du premier rayon de la nageoire dorsale, Document Scientifique, no. 75, Dakar: Centre de Recherches océanographiques de Dakar-Thiaroye (C.R.O.D.T.), 1980.
Cayré, P., and Diouf, T., Estimating age and growth of little tunny (Euthynnus alleteratus) off the coast of Senegal using dorsal spines sections, Proceedings of the International Workshop on Age Determination of Oceanic Pelagic Fishes: Tunas, Billfishes and Sharks, Prince E.D. and Pulos L.M. Eds., US Dept. Commer. NOAA Tech. Rep. NMFS, 1983, vol. 8, pp. 105–110.
Chang, W.Y.B., A statistical method for evaluating the reproducibility of age determination, Can. J. Fish. Aquat. Sci., 1982, vol. 39, pp. 1208–1210. https://doi.org/10.1139/f82-158
Compeán-Jiménez, G., and Bard, F.X., Growth increments on dorsal spines of eastern Atlantic bluefin tuna (Thunnus thynnus, L.) and their possible relation to migrations patterns, Proceedings of The International Workshop on Age Determination of Oceanic Pelagic Fishes: Tunas, Billfishes and Sharks, Prince E.D. and Pulos L.M. Eds., US Dept. Commer. NOAA Tech. Rep. NMFS, 1983, vol. 8, pp. 77–86. https://doi.org/10.1111/j.1439-0426.2009.01191.x
Corriero, A., Desantis, S., Deflorio, M., et al., Histological investigation on the ovarian cycle of the eastern Atlantic bluefin tuna (Thunnus thynnus L.), J. Fish Biol., 2003, vol. 63, pp. 108–119. https://doi.org/10.1046/j.1095-8649.2003.00132.x
Cort, J.L., Age and growth of the bluefin tuna (Thunnus thynnus) of the North-East Atlantic, SCRS/1990/66, Collective Volume of Scientific Papers, ICCAT, 1991, vol. 35, no. 2, pp. 213–230.
El-Kebir, N.K., Rodriguez-Cabello, C., and Tawi, M.Y.O., Age estimation of bluefin tuna (Thunnus thynnus, L.) caught by traps in Libyan waters based on spine reading, SCRS/2001/135, Collective Volume of Scientific Papers, ICCAT, 2002, vol. 54, no. 2, pp. 641–648.
Farrugia, A., and Rodriguez-Cabello, C., Preliminary study on the age estimation of bluefin tuna (Thunnus thynnus, L.) around the Maltese Islands, SCRS/00/108, Collective Volume of Scientific Papers, ICCAT, 2001, vol. 52, no. 2, pp. 771–775.
Fromentin, J.M., and Lopuszanski, D., Migration, residency, and hominh of bluefin tuna in the western Mediterranean Sea, ICES J. Mar. Sci., 2014, vol. 71, no. 3, pp. 510–518. https://doi.org/10.1093/icesjms/fst157
Fromentin, J.M., and Powers, J.E., Atlantic bluefin tuna: Population dynamics, ecology, fisheries and management, Fish Fish., 2005, vol. 6, pp. 281–306. https://doi.org/10.1111/j.1467-2979.2005.00197.x
Gompertz, B., On the nature of the function expressive of the law of human mortality and on a new mode of determining the value of life contingencies, Philos. Trans. R. Soc. Lond., 1825, vol. 115, pp. 515–585. https://doi.org/10.1098/rspl.1815.0271
Jackson, G.D., and Choat, J.H., Growth in tropical cephalopods: An analysis based on statolith microstructure, Can. J. Fish. Aquat. Sci., 1992, vol. 49, pp. 218–228. https://doi.org/10.1139/f92-026
Jobling, M., Environmental factors and rates of development and growth, in Handbook of Fish Biology and Fisheries, Hart P.J.B. and Reynolds J.D. Eds., Malden: Blackwell Sci. Ltd., 2002, vol. 1, pp. 97–122. https://doi.org/10.1002/9780470693803.ch5
Landa, J., Rodríguez-Marín, E., Lastra, P., et al., Growth of bluefin tuna (Thunnus thynnus) in the North-eastern Atlantic and Mediterranean based on back-calculation of dorsal spine annuli, Fish. Res., 2015, vol. 170, pp. 190–198. https://doi.org/10.1016/j.fishres.2015.06.002
Luque, P.L., Rodríguez-Marín, E., Landa, J., et al., Direct ageing of Thunnus thynnus from the east Atlantic Ocean and western Mediterranean Sea using dorsal fin spines, J. Fish Biol., 2014, vol. 84, no. 6, pp. 1876–1903. https://doi.org/10.1111/jfb.12406
Megalofonou, P., and de Metrio, G., Age estimation and annulus-formation in dorsal spines of juvenile bluefin tuna, Thunnus thynnus, from the Mediterranean Sea, J. Mar. Biol. Assoc. UK, 2000, vol. 80, pp. 753–754. https://doi.org/10.1017/S0025315400002678
Metian, M., Pouil, S., Boustany, A., and Troell, M., Farming of Bluefin tuna—reconsidering global estimates and sustainability concerns, Rev. Fish. Sci. Aquac., 2014, vol. 22, pp. 184–192. https://doi.org/10.1080/23308249.2014.907771
Milatou, N., and Megalofonou, P., Age structure and growth of bluefin tuna (Thunnus thynnus, L.) in the capture-based aquaculture in the Mediterranean Sea, Aquaculture, 2014, vol. 424–425, pp. 35–44. https://doi.org/10.1016/j.aquaculture.2013.12.037
Milatou, N., Dassenakis, M., and Megalofonou, P., Mercury concentrations in rearedAtlantic bluefin tuna and risk assessment for the consumers: To eat or not to eat? Food Chem., 2020, vol. 331, Article 127267. https://doi.org/10.1016/j.foodchem.2020.127267
Murua, H., Rodríguez-Marín, E., Neilson, J.D., et al., Fast versus slow growing tuna species: age, growth, and implications for population dynamics and fisheries management, Rev. Fish Biol. Fish., 2017, vol. 27, pp. 733–773. https://doi.org/10.1007/s11160-017-9474-1
Mylonas, C.C., De la Gándara, F., Corriero, A., and Belmonte Ríos, A., Atlantic Bluefin tuna (Thunnus thynnus) farming and fattening in the Mediterranean Sea, Rev. Fish. Sci., 2010, vol. 18, pp. 266–280. https://doi.org/10.1080/10641262.2010.509520
Pauly, D., Gill size and temperature as governing factors in fish growth: a generalization of von Bertalanffy`s growth formula, PhD Thesis, Berichte aus dem Institute für Meereskundem; University of Kiel, 1979.
Pauly, D., and Munro, J.L., Once more on the comparison of growth in fish and invertebrates, Fishbyte, 1984, vol. 2, no. 1, p. 21.
Restrepo, V.R., Diaz, G.A., Walter, J.F., et al., Updated estimate of the growth curve of Western Atlantic bluefin tuna, Aquat. Living Resour., 2010, vol. 23, pp. 335–342. https://doi.org/10.1051/alr/2011004
Ricker, W.E., Computation and interpretation of biological statistics of fish populations, J. Fish. Res. Board Can., 1975, vol. 191, pp. 1–382.
Rodríguez-Marín, E., Olafsdottir, D., Valeiras, J., et al., Ageing comparison from vertebrae and spines of bluefin tuna (Thunnus thynnus) coming from the same specimen, SCRS/2005/109, Collective Volume of Scientific Papers, ICCAT, 2006, vol. 59, no. 3, pp. 868–876
Rodríguez-Marín, E., Clear, N., Cort, J.L., et al., Report of the 2006 ICCAT workshop for bluefin tuna direct ageing, SCRS/2006/157, Collective Volume of Scientific Papers, ICCAT, 2007, vol. 60, no. 4, pp. 1349–1392.
Rodríguez-Marín, E., Luque, P.L., Busawon, D., et al., An attempt of validation of Atlantic bluefin tuna (Thunnus thynnus) ageing using dorsal fin spines, Report of the 2013 Bluefin Tuna Meeting on Biological Parameters Review, SCRS/2013/081, Tenerife: The International Commission for the Conservation of Atlantic Tunas, 2013, pp. 11−12.
Rodríguez-Marín, E., Di Natale, A., Quelle, P., et al., Report of the age calibration exchange within the Atlantic Wide Research Programme for bluefin tuna (GBYP), Report of the 2014 Bluefin Tuna Meeting on Stock Assessment, SCRS/2014/150, Madrid: The International Commission for the Conservation of Atlantic Tunas, 2014, p. 115.
Rooker, J.R., Alvarado Bremer, J.R., Block, B.A., et al., Life history and stock structure of Atlantic bluefin tuna (Thunnus thynnus), Rev. Fish. Sci., 2007, vol. 15, pp. 265–310. https://doi.org/10.1080/10641260701484135
Santamaria, N., Bello, G., Corriero, A., et al., Age and growth of Atlantic bluefin tuna, Thunnus thynnus, (Osteichthyes: Thunnidae), in the Mediterranean Sea, J. Appl. Ichthyol., 2009, vol. 25, pp. 38–45. https://doi.org/10.1111/j.1439-0426.2009.01191.x
Santamaria, N., Bello, G., Pousis, C., et al., Fin spine bone resorption in Atlantic bluefin tuna, Thunnus thynnus, and comparison between wild and captive-reared specimens, PLoS ONE, 2015, vol. 10, Article e0121924. https://doi.org/10.1371/journal.pone.0121924
Sparre, P., Computer programs for fish stock assessment. Length-based fish stock assessment (LFSA), FAO Fish. Tech. Pap., Rome: FAO, 1987 no. 101, Suppl. 2.
Susca, V., Corriero, A., Bridges, C.R., and De Metrio, G., Study of the sexual maturity of female bluefin tuna: purification and partial characterization of vitellogenin and its use in an enzyme-linked immunobsorbent assay, J. Fish Biol., 2001, vol. 58, pp. 815–831. https://doi.org/10.1111/j.1095-8649.2001.tb00533.x
Tzoumas, A., Ramfos, A., de Metrio, G., et al., Weight growth of Atlantic Bluefin tuna (Thunnus thynnus, L. 1758) as a result of a 6–7 months fattening process in Central Mediterranean, SCRS/2009/135, Collective Volume of Scientific Papers, ICCAT, 2010, vol. 65, no. 3, pp. 787–800.
Von Bertalanffy, L., A quantitative theory of organic growth, Hum. Biol., 1938, vol. 10, pp. 181–213.
Wilson, S.G. Jonsen, I.D., Schallert, R.J., et al., Tracking the fidelity of Atlantic bluefin tuna released in Canadian waters to the Gulf of Mexico spawning grounds, Can. J. Fish. Aquat. Sci., 2015, vol. 72, pp. 1700–1717. https://doi.org/10.1139/cjfas-2015-0110
ACKNOWLEDGMENTS
This study is part of a PhD thesis that was conducted at the Department of Biology, National and Kapodistrian University of Athens. We would like to express our most sincere thanks to Mr. G. Apostolopoulos, Mrs. Z. Kotsiri, Mr. N. Providakis, and Mr. I. Theodorou for the readings of a number of spines as inexperienced readers.
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Milatou, N., Megalofonou, P. Direct Ageing and Growth using Dorsal Fin Spines of Bluefin Tuna Thunnus thynnus (Scombridae) Reared in Sea Cages and a Comparison with Wild Populations. J. Ichthyol. 63, 479–492 (2023). https://doi.org/10.1134/S0032945223030086
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DOI: https://doi.org/10.1134/S0032945223030086