逐次加入のある資源におけるパラメーターの推定について-III : 〓法による太平洋海域メバチのパラメーターの同時推定

概要

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1) When two factors (M and q) were estimated by the tracing method assuming that the values of rl was constant (r2=0.08, r2 =0.24, r4=0.43, r5=0.25), these values were obtained to be 0.5630 and 0.09632/109 hooks respectively. 2) For the simultaneous estimation of the proportion of recruits (rl), the index for the proportion of recruits (Ir) was suggested, and rl in each line could be calculated from Ir, the mean recruitment age and normal distribution. 3) Two factors (M and q) were estimated for various levels of Ir, and it was obtained that M and q be 0.349 and 0.1859/109 hooks at Ir=0.88, and ?? min was less than that in two-factor estimation. 4) In the simultaneous three-factor estimation (M, q and Ir), three parameters were estimated to be as follows; Ir=0.879 (r2=0.126, rs=0.270, r4=0.335 and r5=0.269), M=0.350 and q=0.189/109 hooks.
公益社団法人日本水産学会の論文