C. Damgaard et H. Ostergard, DENSITY-DEPENDENT GROWTH AND LIFE-HISTORY EVOLUTION OF POLYCYCLIC LEAF PATHOGENS - A CONTINUOUS-TIME GROWTH-MODEL, Journal of phytopathology, 145(1), 1997, pp. 17-23
A density-dependent growth model of a polycyclic leaf pathogen is anal
ysed. Viability and fecundity of the pathogen are regulated by the cur
rent population density. Spores are produced continuously from a sporu
lating infection until death of the infection, and consequently, all a
ge classes of infections are present at a certain point in time. The l
eaf area of the host varies with time. Evolution of life history strat
egies are studied by letting different pathogen genotypes compete with
each other. Evolution of life history strategies and evolution of imp
act of disease are discussed in relation to the ecology of the host-pa
thogen system. The model is exemplified by Erysiphe graminis f. sp. ho
rdei growing on Hordeum vulgare.