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1 Blimit 34 ABC 1-1)-(1) ABC F Fcurrent 2010 Blimit Fcurrent Flimit Ftarget 0.8Flimit ABCtarget 2010 ABC F ABClimit 60 Fcurrent % ABCtarget Fcurrent % F % % Fcurrent F

2 M (10) (10)) ) (11)) B M (8) % 5 9% % 5 43% cm1 11cm

3 3 Funamoto et al %6 80% 7 95%8 100% Kishida CPUE

4 5CPUE , , % 8295% % RPS M M M 30% M 79134% M 79135% M 87118%

5 6 F F Blimit RPS F SPR YPR 19 Fcurrent Fcurrent %SPR 1.3%Fcurrent Fmax F30%SPR 10mm 0.5 ( ) 1 12 F 3

6 Blimit 30 2 ABC B>Blimit ABC 1-1)-(1) F ABC Flimit FtargetFlimit Fcurrent 2010 Blimit Fcurrent 0.8 ABClimit ABCtarget % Fcurrent 2010 ABC ABC 6 20 Fcurrent ABC ABC F30% Fmax 2010 F ABClimit F 2010 ABC F ABClimit 60 Fcurrent % ABCtarget Fcurrent % F

7 2010 F 97 F30% % 98 Fmax % 3 Fcurrent Fcurrent F 2010 F 0.4Fcurrent F F30% Fmax F 0.2Fcurrent F Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent F Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent F Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent

8 F Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent Fcurrent ABClimit M ABC M 30% 2010 ABClimit 1%M 30% 1% 25 6M ABClimit 5 ABC F ABClimit ABCtarget 2008 Fsim Fsim Fcurrent Fsim Fcurrent F Fcurrent ( ,

9 , Funamoto, T., Aoki, I., and Wada, Y. (2004) Reproductive characteristics of Japanese anchovy, Engraulis japonicus, in two bays of Japan. Fisheries Research, 70, ( (1) ( , 41, ( Kishida, T. (1986 Feeding habits of Japanese Spanish mackerel in the central and western waters of the Seto Inland Sea. Bull. Nansei Reg. Fish. (20), (2008) ,74, (2009) ,, (1986., 1140pp. (2003)., 69, (1990)., 3, 9-17 (2001)., 13, (1952)., 17,

11 1. 1) a 1995b Fukuhara and Takao1988 La exp( a) a La a mm BW TL (TL 4 cm ; R N500) BW TL (TL 4 cm ; R N32,000) (1) BW gtl cm1 Lcm BW L (R N32,000) 1 Chen and Watanabe (1989) M 1

12 3 10mm ( ) mm 15mm Pope(1972) Na,mNa 1,m 1exp(Ma)Ca,mexp(Ma/2) Fa,mln{1Ca,mexp(Ma/2)/Na,m} Na,m a a18 m Ca,m a a18 m Ma a Fa,m a m m N9,m 10 m N10,m N9,mC9,m/(C10,mC9,m) N10,m 1exp(M9)C9,mexp(M9/2) N10,mC10,m/(C10,mC9,m) N10,m 1exp(M9)C10,mexp(M9/2) ml a 110 Na,ml Na,mlCa,mlexp(Ma/2)/{1exp(Fa,ml)} Ca,ml a 110ml Fa,ml a 1 10ml 19 ml Fa,ml F 10ml F10,ml 9 F Chen, S. and S. Watanabe (1989) Age dependence of natural mortality coefficient in fish population dynamics. Nippon Suisan Gakkaishi, 55, ,, Fukuhara, O. and K. Takao (1988) Growth and larval behaviour of Engraulis japonica in captivity. J. Appl. Ichthyol., 4, Pope, J. G. (1972) An investigation of the accuracy of virtual population analysis using cohort analysis. Int. Comm. Alt. Fish. Res. Bull., 9, (2003)

13 ., 69, (1995a)., 11, (1995b) (). 1,, (1985).,, 381pp. (2001)., 13, (1983),, B NORPAC ( , (2008) ,74, (1995,,,, A-1, 368pp 3. YPR YPR 16 YPR a 1 Na Fa/(Fa Ma) [1 exp{ (Fa Ma)}] Wa/N1 4. SPR SPR

14 16 SPR a1 fra Na Wa/N1 fra a Na a Wa a g 1

15 CPUE 6.

16 RPS 12. M

17 13. M 14. M 15. F

18 19. YPRSPR F 22. F 23. F 24. F

19 25. M2010ABClimit

< F2D955C8E8691E63295AA8DFB2E6A7464>

< F2D955C8E8691E63295AA8DFB2E6A7464> 19981999 22 2527 27 28 CPUE 2324 F2%SPR 21 ABC 1-3)-(2) F limit =F2%SPR 1 1=1 ABC limit F target =Flimit.8 ABC target 21ABC ABC limit 117 F2%SPR.43 3% ABC target 97.8F2%SPR.34 25% 27 531 21.57 38% 28 321