Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Patterns in the population drift and seed resource utilization of Spilostethus hospes (Fab.).

Abstract

The lygaeid Spilostethus hospes utilizes efficiently the seeds of Solanum melongena [aubergines], S. torvum, Lycopersicon esculentum [tomatoes], Calotropis gigantea, Vernonia cinerea and Euphorbia hirta. Crop plants being seasonal, their availability is limited throughout the year. The perennial weed C. gigantea serves as an out of season host for S. hospes until other host plants appear in the habitat. V. cinerea springs up immediately after the rains and also serves as an alternate host. An in-depth analysis of the patterns observed in the population drift of S. hospes is presented based on a 3-year analysis of the population fluctuation in India. Observations relating to the natural food resources of S. hospes and the efficiency of utilization of these resources are also presented.