NYMPHS_D(t) ¼ NYMPHS_D(t À dt) + (BIRTHING_D À DYING_D À
MATURING_D) * dt
INIT NYMPHS_D ¼ 0 {Individuals}
INFLOWS:
BIRTHING_D ¼ D_LAY_RATE * ADULTS_D
OUTFLOWS:
DYING_D ¼ (1 À MNSF_D) * NYMPHS_D/DT
MATURING_D ¼ MNSF_D * NYMPHS_D/TN_D
D_LAY_RATE ¼ .35
EASF ¼ 0.8
EASF_D ¼ .65
ENSF ¼ .7
ENSF_D ¼ .5
IC ¼ 1ÀEXP(À.3 * NYMPHS * NYMPHS_D)
DOCUMENT: INFECTION COEFFICIENT
LAY_RATE ¼ .6
MNSF ¼ EXP(LN(ENSF)/TN * DT)
MNSF_D ¼ EXP(LN(ENSF_D)/TN_D * DT)
TA ¼ 1
TA_D ¼ 1
TN ¼ 5
TN_D ¼ 5
27.2 Two Age-Class Parasite Model Equations
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