Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Predatory capacity and behavior of Picromerus lewisi Scott against Spodoptera frugiperda higher instar larve.

Abstract

In order to investigate the predatory potential of the 5th instar nymphs of Picromerus lewisi against the 6th instar larvae of Spodoptera frugiperda (J. E. Smith), the functional response and predation behavior of P. lewisi was studied in laboratory. The results showed that the predator exhibited Holling II functional response, with the maximum daily predation number, sequence of attacking efficiency, and handling time of 4.7, 1.512 and 0.215 d, respectively. P. lewisi preferred live prey and showed high predatory capacity. When S. frugiperda was at high density, P. lewisi just killed a prey by piercing and quickly turned to attack other preys. This predatory behavior can maximize the predator's potential for controlling population of S. frugiperda.