Stock structure of blue threadfin Eleutheronema tetradactylum across northern Australia as inferred from stable isotopes in sagittal otolith carbonate

Newman, S. J., Pember, M. B., Rome, B. M., Mitsopoulos, G. E. A., Skepper, C. L., Allsop, Q., Saunders, T., Ballagh, A. C., Van Herwerden, L., Garrett, R. N., Gribble, N. A., Stapley, J. M., Meeuwig, J. J., Moore, B. R. and Welch, D. J. (2011) Stock structure of blue threadfin Eleutheronema tetradactylum across northern Australia as inferred from stable isotopes in sagittal otolith carbonate. Fisheries Management and Ecology, 18 3: 246-257. doi:10.1111/j.1365-2400.2010.00780.x


Author Newman, S. J.
Pember, M. B.
Rome, B. M.
Mitsopoulos, G. E. A.
Skepper, C. L.
Allsop, Q.
Saunders, T.
Ballagh, A. C.
Van Herwerden, L.
Garrett, R. N.
Gribble, N. A.
Stapley, J. M.
Meeuwig, J. J.
Moore, B. R.
Welch, D. J.
Title Stock structure of blue threadfin Eleutheronema tetradactylum across northern Australia as inferred from stable isotopes in sagittal otolith carbonate
Formatted title
Stock structure of blue threadfin Eleutheronema tetradactylum across northern Australia as inferred from stable isotopes in sagittal otolith carbonate 
Journal name Fisheries Management and Ecology   Check publisher's open access policy
ISSN 0969-997X
1365-2400
Publication date 2011-06-01
Sub-type Article (original research)
DOI 10.1111/j.1365-2400.2010.00780.x
Open Access Status Not Open Access
Volume 18
Issue 3
Start page 246
End page 257
Total pages 12
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell
Subject 1104 Complementary and Alternative Medicine
2303 Ecology
Formatted abstract
Stable isotopes of δ18O and δ13C in sagittal otolith carbonates were used to determine the stock structure of the polynemid Eleutheronema tetradactylum (Shaw) across tropical northern Australia, where this species is an important component of inshore commercial and recreational fisheries. Stable isotopes from the sagittal otolith carbonate of 470 fish from 11 discrete locations across western, northern and eastern Australia were sampled between 2007 and 2009. Analysis of these stable isotopes revealed different location-specific signatures, indicating strong population subdivision. The significant differences in the isotopic signatures of E. tetradactylum demonstrated that there is unlikely to be substantial movement of fish between these locations. The spatial separation of these populations indicates a complex fine spatial scale stock structure across northern Australia, with at least 11 stocks or management units present. The population subdivision of E. tetradactylum was evident along expansive stretches of open beach systems and within coastal embayments with no physical barriers such as headlands. These results indicate that optimal fisheries management will require a review of the current spatial arrangements, particularly the potential for localised depletion of stocks on small spatial scales. 
Keyword Connectivity
Fisheries management
Polynemidae
Population subdivision
Stable isotope chemistry
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
 
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 13 times in Scopus Article | Citations
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