TY - JOUR
T1 - A statistical procedure for validating age estimates from otolith bands using mark-recapture data, with an illustration for Pomatomus saltatrix
AU - Govender, A.
N1 - Funding Information:
This study formed part of a special programme funded jointly by the Foundation for Research Development and the South African Association for Marine Biological Research. The KwaZulu-Natal Nature Conservation Service is thanked for permission to collect biological data from confiscated P. salta-trix. Mr W. Vandeverre (Vara Architects) graciously donated funds for the software. Mrs S. L. Birnie of the Oceanographic Research Institute (ORl) is thanked for data extractions and Ms E. Bullen (ORI) for managing the Sedgwick's/ORIIWWF tagging database. The Stellenbosch Farmers' Winery and the World Wildlife Fund are acknowledged for continued sponsorship of the Sedgwick's/ORI/WWF tagging programme. Drs A. E. Punt (CSIRO, Australia), L. E. Beckley (ORI), K. L. Cochrane (FAa, Rome) and Messrs R. P. Van der E]st and B. Tomalin (both of ORI), and Ms J. B. Mann-Lang (Sea World Education Centre, provided constructive critcisms of initial drafts of this manuscript. Mr C. G. Attwood of Marine and Coastal Management (formerly Sea Fisheries), Cape Town, is thanked for his constructive comments, as too is Prof. D. S. Butterworth of the University of Cape Town, who suggested the use of Equation 7.
PY - 1999
Y1 - 1999
N2 - A study of age and growth in Pomatomus saltatrix from KwaZulu-Natal was undertaken on the basis of otolith readings. Validation of periodicity of otolith banding was attempted by developing a model that estimated growth parameters from age-length data. The model assumed arbitrarily chosen band-deposition periodicities, and then simultaneously predicted growth increments of tagged individuals based on these growth parameters. The assumption of annual banding led to the best prediction of growth increments of tagged individuals, with small coefficients of variations in the parameter estimates. However, because only a few tagged animals were used in the analysis, more research is needed to verify the reliability of this technique.
AB - A study of age and growth in Pomatomus saltatrix from KwaZulu-Natal was undertaken on the basis of otolith readings. Validation of periodicity of otolith banding was attempted by developing a model that estimated growth parameters from age-length data. The model assumed arbitrarily chosen band-deposition periodicities, and then simultaneously predicted growth increments of tagged individuals based on these growth parameters. The assumption of annual banding led to the best prediction of growth increments of tagged individuals, with small coefficients of variations in the parameter estimates. However, because only a few tagged animals were used in the analysis, more research is needed to verify the reliability of this technique.
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U2 - 10.2989/025776199784125935
DO - 10.2989/025776199784125935
M3 - Article
AN - SCOPUS:0033382818
SN - 0257-7615
SP - 1
EP - 8
JO - South African Journal of Marine Science
JF - South African Journal of Marine Science
IS - 21
ER -