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Correction of “Case Study: A Simulation Model of the Spawning Stock Biomass of Pacific Bluefin Tuna and Evaluation of Fisheries”

DOI: 10.4236/oalib.1103575, PP. 1-7

Subject Areas: Marine Biology

Keywords: Bluefin Tuna, Stock-Recruitment Relationship, Environmental Factors

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Abstract

One error was found in the coding of the simulation program for reproducing the recruitment (R) and spawning stock biomass (SSB) of Pacific bluefin tuna. As a result of this error, the maturity rates for ages 3 and 4 were found to be much lower in the simulation than the true values. The aim of this paper is to show the results when the error is corrected. The R and SSB were under-estimated in response to the error. As a result, the natural mortality coefficients (M) in the previous paper were assumed to be smaller so that the reproduced R and SSB would coincide with those observed. When the error was corrected, it was not necessary to assume the value of M to be smaller. When the corrected progam and the original M values were used, the R and SSB reproduced in the simulation coincided well with those shown in the previous paper.

Cite this paper

Sakuramoto, K. (2017). Correction of “Case Study: A Simulation Model of the Spawning Stock Biomass of Pacific Bluefin Tuna and Evaluation of Fisheries”. Open Access Library Journal, 4, e3575. doi: http://dx.doi.org/10.4236/oalib.1103575.

References

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