Local criteria for blowup in two-dimensional chemotaxis models
  We consider two-dimensional versions of the Keller--Segel model for the chemotaxis with either classical (Brownian) or fractional (anomalous) diffusion. Criteria for blowup of solutions in terms of suitable Morrey spaces norms are derived. Moreover, the impact of the consumption term on the global-in-time existence of solutions is analyzed for the classical Keller--Segel system. 
Piotr Biler, Tomasz Cie\'slak, Grzegorz Karch, Jacek Zienkiewicz
math.AP