Invasion and dynamics of covert infection strategies in structured insect–pathogen populations

摘要: Summary 1 Pathogens are known to cause horizontally transmitted overt (fully symptomatic) and vertically covert (asymptomatic) infections. Here, we explore a range of different infection strategies on the persistence dynamics insect host–pathogen interactions. 2 The three (i) sublethal infections in which hosts survive initial but suffer costs fecundity or development, (ii) persistent infections, with minimal development also confer immunity against superinfection (iii) without superinfection. 3 We examine conditions that allow these invade. We find can act modulate population (i.e. changes amplitude periodicity cycles) as well inducing (stable unstable states). This is line empirical findings. 4 Covert able generate novel dynamics. In particular, over wide parameter space predicted stable interaction solely between covertly infected pathogen, exclusion clean susceptible hosts. 5 Our results suggest that, general, interactions may be maintained low-level endemic states propensity show cyclic oscillations characteristic enemy–victim interactions. Understanding requires knowledge factors involved, such compensate for destabilizing effects time-lags.