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Western corn rootworm (Diabrotica virgifera virgifera LeConte) population dynamics

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Abstract:

Abstract

1 The western corn rootworm Diabrotica virgifera virgifera LeConte is a major insect pest of field maize, Zea mays L. Larvae can cause substantial injury by feeding on maize roots. Larval feeding may destroy individual roots or root nodes, and reduce plant growth, stability, and yield. Costs associated with managing corn rootworms in continuous maize are annually one of the largest expenditures for insect management in the United States Corn Belt.

2 Even though D. virgifera virgifera has been studied intensively for over 50 years, there is renewed interest in the biology, ecology, and genetics of this species because of its ability to rapidly adapt to management tactics, and its aggressive invasive nature.

3 This article provides a comprehensive review of D. virgifera virgifera population dynamics, specifically: diapause, larval and adult development, seasonality, spatial and temporal dynamics at local and landscape scales, invasiveness in North America and Europe, and non-trophic interactions with other arthropods.

4 Gaps in current knowledge are identified and discussed especially within the context of challenges that scientists in North America and Europe are currently facing regarding pest dynamics and the need to develop appropriate management strategies for each geographic area.

Keywords: Development; Diabrotica virgifera virgifera; Europe; North America; Zea mays; diapause; invasiveness; maize; population dynamics; seasonality; western corn rootworm

Document Type: Research Article

DOI: https://doi.org/10.1111/j.1461-9563.2008.00419.x

Affiliations: 1: USDA-ARS, Corn Insects and Crop Genetics Research Unit, Genetics Laboratory, Iowa State University, Ames, IA 50011 2: Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL 61801, U.S.A. 3: “Biologie des Populations en Interaction”, UMR INRA-UNSA 1112 ROSE, Centre INRA-UNSA de Sophia Antipolis, 400 Route des Chappes, 06930 Sophia Antipolis, France 4: Plant Protection Institute, Szent István University, 2103 Gödöllő, Pater K. 1. Hungary 5: Department of Environmental Agronomy and Crop Production, University of Padova, AGRIPOLIS, 35020 Legnaro PD Italy

Publication date: 2009-02-01

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