Figure 1.

Simplified diagram of the model. The Aedes albopictus life cycle is computed in 7 stages: 3 are aquatic stages present in the breeding sites, eggs (E), larvae (L) and pupae (P), 4 are adult aerial stages, males (M), emerging females ($F_{\mathit{em}}$), nulliparous females ($F_n$) and parous females ($F_p$). Black arrows indicate transitions between stages. Diapause only occurs in the temperate climate and depends on the z parameter. Changes resulting from SIT and BSIT are indicated by grey lines and boxes representing sterile males, whether PP-coated ($M_{\mathit{sc}}$) or not ($M_s$), sterile females ($F_s$) and contaminated breeding sites ($B_c$). The key parameters, in particular those affected by vector control actions, are: $k_L$ and $k_P$ respectively the larval and pupae carrying capacities, ${\gamma }_{\mathit{gc}}$ the duration of the gonotrophic cycle, $\omega$ the relative competitiveness of sterile males, ${\mu }_{M_{\mathit{sc}}}$ and ${\mu }_{M_s}$ the mortality of sterile males, respectively PP-coated or not, $\nu$ the breeding site PP decontamination rate, and $\varphi$ the probability for PP-exposed larvae to survive and pupate. Additional vector control actions were added to the model (orange): mass trapping (full circles for BGS-traps and hollow circles for ovitraps) according to the probability of capture (respectively $c_{F_{\mathit{hs}},BGS},ϵc_{M_{\mathit{all}},BGS}$ and $c_{F_g,O_T}$), prevention (triangles) by reduction of breeding sites ($r_{\mathit{prev}}$), and PP autodissemination (diamonds for ADT) which depends on females contamination ($c_{F_g,S}$).