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. 2014 Apr 23;9(4):e95488. doi: 10.1371/journal.pone.0095488

Figure 7. Analytical approximations of critical migration rates.

Figure 7

Squares indicate Scenarios B (unidirectional CI with infected island population), and circles Scenario D (bidirectional CI). Black and white symbols represent numerical results and analytical approximations using formula (1), respectively. Graph A: Recessive Lethal NI. Parameters: l NI = 1, h = 0, s = 0.1. Graph B: Dominant Lethal NI. Parameters: h = 0.99, l NI = 1, s = 0.1. Approximations are especially good for unidirectional CI and low to moderate bidirectional CI.