“…Especially, Busenberg and Huang [1996] firstly studied the Hopf bifurcation of the nonhomogeneous equilibrium for Dirichlet boundary condition, see also [Chen & Shi, 2012;Chen & Yu, 2014;Hu & Yuan, 2011;Su et al, 2009Su et al, , 2012Yan & Li, 2010] for other related delayed reaction-diffusion equations with Dirichlet boundary condition. For delayed differential equations, the effect of multiple delays has been widely investigated, see [Bélair & Campbell, 1994;Braddock & van den Driessche, 1993;Faria, 2011;Gopalsamy, 1990;Hale & Huang, 1993;Lenhart & Travis, 1986;Li et al, 1999;Mahaffy et al, 1995].…”