Final profiles of the total planetesimal surface density considering the evolution of the gas disc, the growth of the embedded planet by gas accretion, and Type II migration of the planet. The red, blue, and green solid blue curves represent the profiles with α = 10⁻⁴, 10^−3.4, and 10⁻³, respectively. The solid, dashed, and dotted curves are the cases where the planet is put at t_pl,0 = 0 Myr, 1 Myr, and 2 Myr, respectively, with α = 10^−3.4. The black curve is the case without the additional effects when α = 10^−3.4 (the same as the Fiducilal case in the left panel of Fig. 13).