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Table 2 The state transition rules of the model

From: Modelling sterile insect technique to control the population of Anopheles gambiae

State Duration Exit condition Note
Egg 1 day + H t None Reflects incubation and hatch time.
Larva about 12 days Nighttime Larval mortality is density dependent and favours
    older larvae.
Pupa 1 day + H t Nighttime Adult emergence from pupae occurs (6 P.M. to 6 A.M.
    in the simulation).
Immature Adult 53 hours None  
Mate Seeking - 6 P.M. & Female Mating is 100% successful and mate is assigned randomly.
Bloodmeal Seeking - Meal Success & Nighttime Females have a 25% chance of finding a host each hour.
    Bloodmeals take less than 1 hour.
Bloodmeal Digesting 36 hours Nighttime Agents seek to lay eggs in larval habitats only at night.
Gravid - Empty Egg Clutch & Nighttime Agents complete gonotrophic cycles until death.
  1. The model has an hourly time resolution and many agent behaviours are dependent on the time in state and simulated time of day. H t is a randomly assigned ‘hatch time’ value described in Equation 1.