Approximating Optimal Release in a Deterministic Model for the Sterile Insect Technique

Figure 3

With interpulse time fixed to 10 days we now vary sterile release bounds to 7000 (a) and 5000 (b). Intense and prolonged sterile release is required during the first stages until the pest growth tendency is reversed. Notice that the Allee threshold takes longer to appear. Changing the problem with an interpulse time of 15 days did not produce a solution; that is, invasion is inevitable.

(a)

(b)