Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract Full Text

Seasonal incidence of tomato pinworm, Tuta absoluta (Meyrick) (Gelechiidae: Lepidoptera).

Abstract

South American tomato pinworm, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), an invasive pest on tomato (Solanum lycopersicum Miller) is an oligophagous invasive alien pest associated with solanaceous crops. It causes reductions in yield and fruit quality up to 100 per cent both in greenhouses and open fields, if control measures are not applied (Shashank et al, 2015). Present study was conducted to understand the influence of weather parameters on T. absoluta in open field in 2017-18 to 2018-19. Infestation level of T. absoluta was low during early phenological cycle of the crop. Then onwards, T. absoluta density increased with advancement of the crop. During the present study, the incidence of T. absoluta showed the positive correlation with the maximum temperature, negative relation with relative humidity and rain fall. Based on the results, it is inferred that, management should be initiated in the early growth period itself to avoid build-up of the pest in the late phenological cycle of the crop.