Fig. 1From: Stable coevolutionary regimes for genetic parasites and their hosts: you must differ to coevolveNon-trivial null-clines P1(R), P2(R)for model (1). See eq.(2). Left panel: for q(1 + αe)eR ≠ (1 + e)eP), the isoclines P1(R), P2(R) do not intersect for positive P, R. Right panel: P1(R)≡ P2(R) for q(1 + αe)eR = (1 + e)eP), so system (1) has a line of non-isolated equilibriaBack to article page