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Effects of sexual dimorphism on population parameters and exploitation ratios of blue marlin (Makaira nigricans) in the northwest Pacific Ocean

Published online by Cambridge University Press:  23 January 2013

Nan-Jay Su ,
Chi-Lu Sun ,
André E. Punt ,
Su-Zan Yeh ,
Wei-Chuan Chiang ,
Yi-Jay Chang  and
Hsiao-Yun Chang
Nan-Jay Su
Affiliation:
Institute of Oceanography, National Taiwan University, Taipei, 10617 Taiwan
Chi-Lu Sun*
Affiliation:
Institute of Oceanography, National Taiwan University, Taipei, 10617 Taiwan
André E. Punt
Affiliation:
School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98195, USA
Su-Zan Yeh
Affiliation:
Institute of Oceanography, National Taiwan University, Taipei, 10617 Taiwan
Wei-Chuan Chiang
Affiliation:
Eastern Marine Biology Research Center, Fisheries Research Institute, Taitung, 96143 Taiwan
Yi-Jay Chang
Affiliation:
Institute of Oceanography, National Taiwan University, Taipei, 10617 Taiwan
Hsiao-Yun Chang
Affiliation:
Institute of Oceanography, National Taiwan University, Taipei, 10617 Taiwan
*
a Corresponding author: chilu@ntu.edu.tw
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Abstract

Blue marlin are sexually dimorphic in size-at-age and other biological characteristics. However, few studies have examined the possible impact of sexual dimorphism on the population parameters and the ratios of fishing to total mortality (the exploitation ratios) for this species. We analyzed sex-specific catch-at-length data for blue marlin collected from the Taiwanese tuna longline fishery in the northwest Pacific Ocean, ranging between 100–311 cm in eye to fork length (EFL) for females and 100–236 cm EFL for males, and show that the proportion of females in the catch (the sex ratio) increases with length, with females reaching larger body sizes than males. Minor differences in fishery sex ratios among months were observed. Growth parameters, length structures, and natural mortality rates were estimated to differ between males and females, while fishing mortality rates were found to be similar. Nevertheless, the exploitation ratio for females was higher than that for males. We suggest that growth parameters and natural mortality rates should be sex-specific when assessments for sexually-dimorphic species such as blue marlin are conducted, and that management of blue marlin fisheries could be developed based on size limit regulations for large individuals.

Keywords

Sex-specific size dataSex ratioLength structureGrowth parameterMortality rateBillfishIstiophoridae
Type
Research Article
Information
Aquatic Living Resources , Volume 26 , Issue 1 , January 2013 , pp. 19 - 24
Copyright
© EDP Sciences, IFREMER, IRD 2013

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References

Beverton, R.J.H., 1992, Patterns of reproductive strategy parameters in some marine teleost fishes. J. Fish Biol. 41 (Suppl. B), 137–160. CrossRefGoogle Scholar
Beverton, R.J.H., Holt, S.J., 1956, A review of methods for estimating mortality rates in fish populations, with special reference to sources of bias in catch sampling. Rapp. P.-V. Réun. Cons. Int. Explor. Mer 140, 67–83. Google Scholar
Froese, R., Binohlan, C., 2000, Empirical relationships to estimate asymptotic length, length at first maturity and length at maximum yield per recruit in fishes, with a simple method to evaluate length frequency data. J. Fish Biol. 56, 758–773. CrossRefGoogle Scholar
Fry, G.C., Griffiths, S.P., 2010, Population dynamics and stock status of cobia, Rachycentron canadum, caught in Australian recreational and commercial coastal fisheries. Fish. Manage. Ecol. 17, 231–239. CrossRefGoogle Scholar
González-Armas, R., Klett-Traulsen, A., Hernández-Herrera, A., 2006, Evidence of billfish reproduction in the southern Gulf of California, Mexico. Bull. Mar. Sci. 79, 705–717. Google Scholar
Graves, J.E., McDowell, J.R., 2003, Stock structure of the world’s istiophorid billfishes : a genetic perspective. Mar. Freshw. Res. 54, 287–298. CrossRefGoogle Scholar
Hill, K.T., Cailliet, G.M., Radtke, R.L., 1989, A comparative analysis of growth zones in four calcified structures of Pacific blue marlin, Makaira nigricans. Fish. Bull. 87, 829–843. Google Scholar
Hinton M.G., 2001, Status of blue marlin in the Pacific Ocean. Stock Assessment Report 1, Inter-American Tropical Tuna Commission, La Jolla, CA, pp. 284–319.
Hufnagl, M., Temming, A., Siegel, V., Tulp, I., Bolle, L., 2010, Estimating total mortality and asymptotic length of Crangon crangon between 1955 and 2006. ICES J. Mar. Sci. 67, 875–884. CrossRefGoogle Scholar
Jensen, A.L., 1996, Beverton and Holt life history invariants result from optimal trade-off of reproduction and survival. Can. J. Fish. Aquat. Sci. 53, 820–822. CrossRefGoogle Scholar
Kleiber, P., Hinton, M.G., Uozumi, Y., 2003, Stock assessment of blue marlin (Makaira nigricans) in the Pacific using MUNTIFAN-CL. Mar. Freshw. Res. 54, 349–360. CrossRefGoogle Scholar
Kopf, R.K., Drew, K., Humphreys, R.L., 2010, Age estimation of billfishes (Kajikia spp.) using fin spine cross-sections : the need for an international code of practice. Aquat. Living Resour. 23, 13–23. CrossRefGoogle Scholar
Molony B., 2008, Fisheries biology and ecology of highly migratory species that commonly interact with industrialised longline and purse-seine fisheries in the western and central Pacific Ocean. Working Paper EB-IP-6, 4th Meeting of the Scientific Committee of the Western and Central Pacific Fisheries Commission (WCPFC-SC4), 11-22 August 2008, Port Moresby, Papua New Guinea.
Nakano, H., Matsunaga, H., Okamoto, H., Okazaki, M., 2003, Acoustic tracking of bigeye thresher shark Alopias superciliosus in the eastern Pacific Ocean. Mar. Ecol. Prog. Ser. 265, 255–261. CrossRefGoogle Scholar
Ottersen, G., Hjermann, D., Stenseth, N.C., 2006, Changes in spawning stock structure strengthen the link between climate and recruitment in a heavily fished cod (Gadus morhua) stock. Fish. Oceanogr. 15, 230–243. CrossRefGoogle Scholar
Patterson, K., 1992, Fisheries for small pelagic species : an empirical approach to management targets. Rev. Fish Biol. Fish. 2, 321–338. CrossRefGoogle Scholar
Pauly, D., 1980, On the interrelationships between natural morality, growth parameters and mean environmental temperatures in 175 fish stocks. J. Cons. Int. Explor. Mer 39, 175–192. CrossRefGoogle Scholar
Pauly, D., 1983, Length-converted catch curves : a powerful tool for fisheries research in the tropics (Part I). Fishbyte 1, 9–13. Google Scholar
Pine, W.E., Martell, S.J.D., Jensen, O.P., Walters, C.J., Kitchell, J.F., 2008, Catch-and-release and size limit regulations for blue, white, and striped marlin : the role of postrelease survival in effective policy design. Can. J. Fish. Aquat. Sci. 65, 975–988. CrossRefGoogle Scholar
Quinn T.J., Deriso R.B., 1999, Quantitative Fish Dynamics. Oxford, New York.
Rochet, M.J., Trenkel, V.M., 2003, Which community indicators can measure the impact of fishing? A review and proposals. Can. J. Fish. Aquat. Sci. 60, 86–99. CrossRefGoogle Scholar
Schaefer, K.M., 1996, Spawning time, frequency, and batch fecundity of yellowfin tuna, Thunnus albacares, near Clipperton Atoll in the eastern Pacific Ocean. Fish. Bull. 94, 98–112. Google Scholar
Skillman, R.A., Yong, M.Y.Y., 1976, Von Bertalanffy growth curves for striped marlin, Tetrapturus audax, and blue marlin, Makaira nigricans, in the central North Pacific Ocean. Fish. Bull. 74, 553–66. Google Scholar
Shannon, C.E., 1948, A mathematical theory of communication. Bell System Tech. J. 27, 379–423. CrossRefGoogle Scholar
Shimose, T., Yokawa, K., Saito, H., Tachihara, K., 2012, Sexual difference in the migration pattern of blue marlin, Makaira nigricans, related to spawning and feeding activities in the western and central North Pacific Ocean. Bull. Mar. Sci. 88, 231–249. CrossRefGoogle Scholar
Su, N.J., Sun, C.L., Punt, A.E., Yeh, S.Z., DiNardo, G., 2011a, Modelling the impacts of environmental variation on the distribution of blue marlin, Makaira nigricans, in the Pacific Ocean. ICES J. Mar. Sci. 68, 1072–1080. CrossRefGoogle Scholar
Su, N.J., Sun, C.L., Punt, A.E., Yeh, S.Z., DiNardo, G., 2011b, Evaluation of a spatially sex-specific assessment method incorporating a habitat preference model for blue marlin (Makaira nigricans) in the Pacific Ocean. Fish. Oceanogr. 20, 415–433. CrossRefGoogle Scholar
Su, N.J., Sun, C.L., Punt, A.E., Yeh, S.Z., DiNardo, G., 2012, Incorporating habitat preference into the stock assessment and management of blue marlin (Makaira nigricans) in the Pacific Ocean. Mar. Freshw. Res. 63, 565–575. CrossRefGoogle Scholar
Sun, C.L., Ehrhardt, N.M., Porch, C.E., Yeh, S.Z., 2002, Analyses of yield and spawning stock biomass per recruit for the South Atlantic albacore (Thunnus alalunga). Fish. Res. 56, 193–204. CrossRefGoogle Scholar
Sun, C.L., Chang, Y.J., Tszeng, C.C., Yeh, S.Z., Su, N.J., 2009, Reproductive biology of blue marlin (Makaira nigricans) in the western Pacific Ocean. Fish. Bull. 107, 420–432. Google Scholar
Thorson, J.T., Prager, M.H., 2011, Better catch curves : Incorporating age-specific natural mortality and logistic selectivity. Trans. Am. Fish. Soc. 140, 356–366. CrossRefGoogle Scholar
Wang, S.P., Sun, C.L., Yeh, S.Z., Chiang, W.C., Su, N.J., Chang, Y.J., Liu, C.H., 2006, Length distributions, weight-length relationships, and sex ratios at lengths for the billfishes in Taiwan waters. Bull. Mar. Sci. 79, 865–869. Google Scholar
Wilson, C.A., Dean, J.M., Prince, E.D., Lee, D.W., 1991, An examination of sexual dimorphism in Atlantic and Pacific blue marlin using body weight, sagittae weight, and age estimates. J. Exp. Mar. Biol. Ecol. 151, 209–225. CrossRefGoogle Scholar