Abstract

This study was conducted to investigate parasitism of naturally occurring pentatomid eggs in rice crops in a Cerrado-Caatinga ecosystem during the rainy and dry seasons in Teresina, Piauí, Brazil. Also, it provides information on the incidence and seasonality of parasitoid species. Parasitism was registered only during the rainy season, where Telenomus podisi (Ashmead, 1893) parasitized Oebalus poecilus (Dallas, 1851), Tibraca limbativentris (Stal, 1860) and Euschistus heros (Fabricius, 1798) eggs. Additionally, Trissolcus urichi (Crawford, 1913) was collected from O. poecilus and T. limbativentris eggs. Ooencyrtus anasae (Ashmead, 1887) was found in O. poecilus eggs. Such findings provide information that can be used to supplement the management of pentatomid pests in the rice agroecosystems, in Piauí, Brazil.

Highlights

  • Rice (Oryza sativa L.) is one of the most cultivated and economically important agricultural crops worldwide, and Brazil is the largest producer and consumer outside Asia (Brazilian Rice 2020)

  • This study provides new records, with information on the incidence and seasonality, of egg parasitoid species from stink bugs in rice crops located in the state of Piauí, Brazil

  • Rice crops planting systems were irrigated by controlled flooding, in lowland soils, during and dry seasons and upland rice, in cerrado soils, during the rainy seasons

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Summary

Introduction

Rice (Oryza sativa L.) is one of the most cultivated and economically important agricultural crops worldwide, and Brazil is the largest producer and consumer outside Asia (Brazilian Rice 2020). The influence of climate variables such as temperature, humidity, and precipitation, on the development and diversity of these stink bugs and parasitoids in this crop must be determined.

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