Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First record of thrips species and their damage to carrot in alto Paranaíba.

Abstract

This paper reports the occurrence of thrips species feeding on carrot (Daucus carota) in the region of Alto Paranaíba, Minas Gerais, Brazil. The samples were collected from three fields of carrot cultivars Verano and Erica: two of Verano and one of Erica. A total of 162 plants were evaluated in field one (Verano), 96 in field two (Erica), and 384 in field three (Verano). Thrips densities evaluations began 20 days after the emergence of the seedlings. The number of thrips per plastic tray trapping was 6.94±2.80 in field one (Verano), 3.84±0.31 in field two (Erica), and 3.68±0.31 in field three (Verano). Among the thrips sampled, 28 females and seven males of Caliothrips phaseoli, four females of Thrips tabaci and 3 females of Frankliniella schultzei were collected in all the areas. The thrips complex caused necrotic patches throughout the upper third of the leaf rachis of D. carota. This is thought to be the first report of T. tabaci, F. schultzei and C. phaseoli in this culture for the Alto Paranaíba region. This information is relevant for the integrated management of pest species, since its identification is a fundamental step for the control methods. Although no proportion can be established among the species present in the crops, more research is needed to monitor thrips and to determine their role as pests in carrot crops in Brazil.