Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Effects of removing the plant canopy on pupal survival and adult emergence of the alfalfa blotch leafminer, Agromyza frontella (Diptera: Agromyzidae).

Abstract

Early removal of the lucerne canopy in fields in Quebec not only reduced the population density of Agromyza frontella by the elimination of partially developed larvae, but also by increasing the mortality of individuals that had already left their mines. This mortality was associated with increased temperatures and/or reduced humidity of the soil, as most pupae are found close to the surface due to the limited burrowing capacity of the prepupae. Harvesting data should be included in predictive models, as this parameter affects both the number and time of adult emergence.