Model

Dependent variable

Factors used as the candidates to check by

stepwise method

Factors chosen by stepwise method

AIC

1

ln (RPS)

AO, PDO

A2, A3, A4, A7, P3, P4, P9, P10

−45.1

2

ln (RPS)

AO, PDO, Rsardine (ref), SSBsardine (ref)

A2, A3, A4, A6, A7, P4, P9, P10, Rsardine (ref)

−63.75

3

ln (RPS)

AO, PDO, Rsardine, SSBsardine

A2, A3, A4, A6, A7, P4, P9, P10, Rsardine

−68.00

4

ln (RPS)

AO, PDO, SSBbluefin

A1, A3, A6, P3, P4, P6, P7, P9, P10, SSBbluefin

−92.45

5

ln (RPS)

AO, PDO, Rsardine, SSBsardine, SSBbluefin

A1, A2, A6, P4, P6, P7, P9, P10, Rsardine, SSBbluefin

−93.03

6

ln (RPS)

AO, PDO, R of sardine, SSBsardine, Rbluefin

A2, A3, A4, A7, A9, P5, P9, Rsardine, Rbluefin

−116.38

7

ln (RPS)

AO, PDO, Rsardine, SSBsardine, SSBbluefin, Rbluefin

A3, A8, Rbluefin, SSBbluefin

−2364.98

8

ln (R)

AO, PDO, Rsardine, SSBsardine, SSBbluefin

A2, A3, A6, P4, P6, P7, P9, P10, Rsardine

−93.96

9

ln (R)

AO, PDO

A1, A3, A6, P3, P4, P6, P9, P10

−94.44