Merger rate density as a function of redshift. The squares represent the volume-averaged merger rates computed from the literature data at z <  4 adopting the Kitzbichler & White (2008) prescription for the merger timescale. The blue stars are the ALPINE data at z ∼ 5 from this work. The error bars are obtained by combining in quadrature the uncertainties on the merger fractions and on the number densities. The darker hatched area reports the results including errors by Mundy et al. (2017) at z <  3.5. The lighter area only shows their extrapolation to higher redshifts. The dashed yellow and brown lines display the evolution of Γ_MM found with the EMERGE simulation (O’Leary et al. 2021) for galaxies with log(M_*/M_⊙)> 9 and log(M_*/M_⊙)> 10, respectively.