highly significantP < 0.01
In addition, a regression analysis of instar versus head width to verify the determination of the instar was conducted, and the linear regression equation was highly significant ( P < 0.01, r 2 = 0.9985) ( Fig. 1 ).
In addition, a regression analysis of instar versus head width to verify the determination of the instar was conducted, and the linear regression equation was highly significant ( P < 0.01, r 2 = 0.9985) ( Fig. 1 ).