Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Influence of host plant on the mango mealybug, Rastrococcus invadens.

Abstract

Life history traits of Rastrococcus invadens were compared in Benin in 1992-94 between two neighbouring mango trees (Mangifera indica), one of which was heavily infested (possibly cv. 'Quinte') and the other slightly infested (cv. 'Gouverneur'). On the infested tree, R. invadens survival was high because of good feeding conditions and low escape. The pre-reproductive period of R. invadens on the heavily infested tree was shorter and total offspring production greater than on the uninfested tree. This significantly affected the intrinsic rate of natural increase and explained the observed differences in population densities among the trees. The results obtained from an additional experiment using juvenile clones from the same two mango varieties, in which environmental factors were uniform, demonstrated the importance of plant genotype on R. invadens size and survival.