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.
Sakuramoto, K.
(2013) A Recruitment Forecasting Model for the Pacific Stock of the Japanese Sardine
(Sardinops melanostictus) that Does Not Assume Density-Dependent Effects. Agricultural
Sciences, 4, 1-8.
Sakuramoto, K. (2014) A Common Concept of Population Dynamics Applicable to both Thripsimaginis (Thysanoptera) and the Pacific Stock of the Japanese Sardine (Sardinops melanostictus). Fisheries
and Aquaculture Journal, 4, 140-151.
Sakuramoto,
K. (2016) Case Study: A Simulation Model of the Spawning Stock Biomass of
Pacific. Bluefin Tuna and Evaluation of Fisheries Regulations. American
Journal of Climate Change, 5,
245-260. https://doi.org/10.4236/ajcc.2016.52021
Kawabata,
J., Honda, S., Watanabe, C., Okamura, H. and Ichinokawa, M. (2014) Stock Assessment
and Evaluation for the Pacific Stock of Japanese Sardine (Fiscal Year 2013). In: Marine Stock Fisheries
Stock Assessment and Evaluation for Japanese Waters (Fiscal Year 2013/2014), Fisheries
Agency and Fisheries Research Agency, Japan, 15-46,
Yatsu, A.,
Watanabe, T., Ishida, M., Sugisaki, H. and Jacobson, L.D. (2005) Environmental Effects
on Recruitment and Productivity of Japanese Sardine Sardinops melanostictus and Chub Mackerel Scomber japonicus with Recommendations for Management. Fisheries
Oceanography,14, 263-278. https://doi.org/10.1111/j.1365-2419.2005.00335.x