In stock assessment the growth rate is often influential and accuracy and precision in estimates are important to ensure the assessment is as accurate as feasible. For many years, OFP has undertaken research to establish the methods to age tropical tunas and estimate their growth rates and how the environment influences growth. Most of our work has been applied to ageing tuna using cross sections of otoliths including bigeye, yellowfin and south pacific albacore using both daily increment and annual increment techniques.
Regional Study of South Pacific Albacore population biology: Year 2 - biological sampling and analysis
REVIEW AND PROPOSED INVESTIGATION OF THE AGE, GROWTH, AND REPRODUCTIVE BIOLOGY OF BIGEYE TUNA