Abstract
Juvenile southern bluefin tuna (SBT, Thunnus maccoyii), migrate down the coast of Western Australia reaching the southern coast at age-1. In these waters an acoustic survey for SBT schools was initiated to generate a fisheries-independent abundance index. A decline in this abundance index led to an acoustic tagging and monitoring project to determine if a change in migration route or timing could explain the decline. Five years of acoustic monitoring revealed interannual differences in key factors that could impact the abundance index. Acoustic tag data were used to demonstrate that (i) a high proportion of fish (~70%) may be too shallow for detection in the acoustic survey, and that interannual variation in (ii) inshore-offshore fraction (~30–70% each year) and (iii) residence time (12–37 days) will impact calculation of an index. These factors should be included in estimating an abundance index for SBT, together with a correction for (iv) the fraction of juvenile SBT that migrate to southern Western Australia. Collectively, these results illustrate how electronic tagging data can be used to improve understanding of abundance patterns necessary for sustainable management of this exploited species.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Caton, A.E. (1991) Review of aspects of southern bluefin tuna biology, population and fisheries. In: Shomura, R.S., Majkowski, J., and Langi, S. (eds.), Proceedings of the First FAO Expert Consultation on Interactions of Pacific Tuna Fisheries. Noumea, New Caledonia, pp. 296–343.
CCSBT (2007) Report of the Twelfth Meeting of the Scientific Committee. Available from http://www.ccsbt.org/docs/meeting_r.html
Cowling, A., Hobday, A.J., and Gunn, J. (2003) Development of a fishery-independent index of abundance for juvenile southern bluefin tuna and improvement of the index through integration of environmental, archival tag and aerial survey data. CSIRO Marine Research. FRDC Final Report 96/118 & 99/105.
Domingues, C.M., Maltrud, M.E., Wjpgfels, S.E., Church, J.A., and Tomczak, M. (2007) Simulated Lagrangian pathways between the Leeuwin Current System and the upper-ocean circulation of the southeast Indian Ocean. Deep-Sea Res II 54, 797–817.
Farley, J.H., and Davis, T.L.O. (1998) Reproductive dynamics of southern bluefin tuna, Thunnus maccoyii. Fish. Bull. 96, 223–236.
Gunn, J.S., Davis, T.L.O., Polacheck, T., Betlehem, A., and Sherlock, M. (1995) The application of archival tags to study SBT migration, behavior and physiology 1995 Southern Bluefin Tuna Recruitment Monitoring Workshop Report No. RMWS/95/8. CSIRO Marine Laboratories Hobart, Australia.
Eveson, P., Bravington, M., and Farley, J. (2007) Aerial Survey: updated index of abundance and preliminary results from calibration experiment. CCSBT-ESC/0709/12. Available from http://www.ccsbt.org/docs/meeting_r.html
Heupel, M.R., Semmens, J.M., and Hobday, A.J. (2006) Automated acoustic tracking of aquatic animals: scales, design and deployment of listening station arrays. Mar. Freshw. Res. 57, 1–13.
Hobday, A.J. (2002) Acoustic monitoring of SBT within the GAB; exchange rates and residence times at topographic features. Southern Bluefin Tuna Recruitment Monitoring Workshop Report No. RMWS/02/03. CSIRO Marine Research, Hobart, Australia.
Hobday, A.J. (2003) Nearshore migration of juvenile southern bluefin tuna in southern Western Australia, Southern Bluefin Tuna Recruitment Monitoring Workshop Report. RMWS/03/15. CSIRO Marine Research, Hobart, Australia.
Hobday, A.J., Davis, T.L.O., and Gunn, J.S. (2001) Determination of SBT residence time via acoustic monitoring along the southern WA coast. Southern Bluefin Tuna Recruitment Monitoring Workshop Report No. RMWS/01/05. CSIRO Marine Research, Hobart, Australia.
Hobday, A.J., and Hartmann, K. (2006) Near real-time spatial management based on habitat predictions for a longline bycatch species. Fish. Manage. Ecol. 13, 365–380.
Hobday, A.J., and Pincock, D. (in review) Estimating detection probabilities for linear acoustic monitoring arrays. Advances in Fish Tagging and Marking Technology.
Hobday, A.J. and Campbell, G. (2009) Topographic preferences and habitat partitioning by pelagic fishes in southern Western Australia. Fish. Res. 95, 332–340.
Hobday, A.J., Flint, N., Stone, T., and Gunn, J. S. (2009) Electronic tagging data supporting flexible spatial management in an Australian longline fishery. In J. Nielsen (ed). Electronic Tagging and Tracking in Marine Fisheries II. Reviews: Methods and Technologies in Fish Biology and Fisheries.
Itoh, T., and Tsuji, S. (2004) Review of Acoustic Monitoring Survey – Analyses of data for eight years. Southern Bluefin Tuna Recruitment Monitoring Workshop Report No. RMWS/04/03. CSIRO Marine Research, Hobart, Australia.
Itoh, T., Takao, T., and Tsuji, S. (2005) Proposal of RMP surveys in WA for age one southern bluefin tuna in 2004/2005. Southern Bluefin Tuna Recruitment Monitoring Workshop Report No. RMWS/05/16. CSIRO Marine Research, Hobart, Australia.
Itoh, T. (2007) Some examination on the recruitment index of age 1 southern bluefin tuna derived from the trolling survey.CCSBT-ESC/0709/35. Available from http://www.ccsbt.org/ docs/pdf/meeting_reports/ccsbt_14/report_of_SC12_public_version.pdf
Lenanton, R.C., Joll, L., Penn, J., and Jones, K. (1991) The influence of the Leeuwin Current on coastal fisheries of Western Australia. J. Royal Soc. West. Aust. 74, 101–114.
Musyl, M.K., Brill, R.W., Curran, D.S., Gunn, J.S., Hartog, J.R., Hill, R.D., Welch, D.W., Eveson, J.P., Boggs, C.H., and Brainard, R.E. (2001) Ability of archival tags to provide estimates of geographical position based on light intensity. In Sibert J.R., Nielsen J.L. (eds.), Electronic Tagging and Tracking in Marine Fisheries. Kluwer Academic Publishers, London, pp. 343–367.
Polacheck, T. (2002) Experimental catches and the precautionary approach: the Southern Bluefin Tuna dispute. Mar. Pol. 26, 283–294.
Teo, S.L.H., Boustany, A., Blackwell, S., Walli, A., Weng K.C., and Block, B.A. (2004) Validation of geolocation estimates based on light level and sea surface temperature from electronic tags. Mar. Ecol. Prog. Ser. 283, 81–98.
Watanabe, K., Takao, Y., Sawada, K., Abe, K. (2004) Acoustic survey of pelagic fishes using a side-scan sonar, preliminarily operated for the coming SBT survey. Southern Bluefin Tuna Recruitment Monitoring Workshop Report No. RMWS/04/04. CSIRO Marine Research, Hobart, Australia.
Waite, A.M., Thompson, P.A., Pesant, S., Feng, M., Beckley, L.E., Domingues, C.M., Gaughan, D., Hanson, C.E., Holl, C.M., Koslow, T., Meuleners, M., Montoya, J.P., Moore, T., Muhling, B.A., Paterson, H., Rennie, S., Strzelecki, J., and Twomeya, L. (2007) The Leeuwin Current and its eddies: An introductory overview. Deep-Sea Res. II 54, 789–796.
Welch, D.W., and Eveson, J.P. (1999) An assessment of light-based geoposition estimates from archival tags. Can J Fish Aquat Sci 56, 1317–1327.
West, G.J., and Stevens, J.D. (2001) Archival tagging of school shark, Galeorhinus Galeus, in Australia: Initial Results. Env. Biol. Fish. 60, 283–298.
Williams, K. (1983) Big numbers of SBF tuna tagged off Esperance. Australian Fisheries July, 26–27.
Willis, J., and Hobday, A.J. (2007) Influence of upwelling on movement of southern bluefin tuna (Thunnus maccoyii) in the Great Australian Bight. Mar. Freshw. Res. 58, 699–708.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer Science+Business Media B.V.
About this chapter
Cite this chapter
Hobday, A.J., Kawabe, R., Takao, Y., Miyashita, K., Itoh, T. (2009). Correction Factors Derived from Acoustic Tag Data for a Juvenile Southern Bluefin Tuna Abundance Index in SouthernWestern Australia. In: Nielsen, J.L., Arrizabalaga, H., Fragoso, N., Hobday, A., Lutcavage, M., Sibert, J. (eds) Tagging and Tracking of Marine Animals with Electronic Devices. Reviews: Methods and Technologies in Fish Biology and Fisheries, vol 9. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9640-2_24
Download citation
DOI: https://doi.org/10.1007/978-1-4020-9640-2_24
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-9639-6
Online ISBN: 978-1-4020-9640-2
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)