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Table 3

The estimated fishing mortality based on reference points and the estimated stock status in terms of the current fishing mortality of the frigate tuna in Sri Lankan waters.

Parameter Definition Estimate
F Fishing mortality rate 1.68 yr−1
Z Total mortality rate 2.33 yr−1
Fmax The fully recruited fishing mortality rate that produces the maximum yield per recruit 0.86 yr−1
F0.1 The fishing mortality rate corresponding to 10% of the slope of the yield-per-recruit curve at the origin 0.47 yr−1
E The percentage of a population caught within a specific timeframe 0.72

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