Predatory Fauna in Cornfields and Response to Imidacloprid Seed Treatment

$28.00 plus tax (Refund Policy)

Buy Article:

Abstract:

The composition and abundance of predatory fauna in corn, Zea mays L., were studied by field visual sampling and pitfall traps over a 5-yr period. In visual samplings, the most abundant groups were Araneae, Heteroptera, Carabidae, Coccinellidae, and Staphylinidae, whereas the prevalent predators caught in pitfall traps belonged to Carabidae, Araneae, Dermaptera, and Opilionidae. The most abundant species or genera in the prevalent groups, except in Arachnida, were identified. Application of the insecticide imidacloprid as a seed dressing is common in the study area to prevent wireworm and cutworm damage. By comparing predator composition and abundance in treated and untreated cornfields during the 5 yr, we assessed the impact of imidacloprid seed treatment on predatory fauna. Among the prevalent predator groups found in visual sampling, Araneae, Coccinellidae, and Staphylinidae were not affected by the imidacloprid treatment, whereas Carabidae was only moderately affected in one of the 5 yr studied. On the contrary, Heteroptera was more drastically reduced by the imidacloprid, but the effect varied with the year. Incidence of European corn borer, Ostrinia nubilalis (Hübner), may be increased as result of such heteropteran reduction. In pitfall traps, only Staphylinidae resulted in lower numbers as consequence of the treatment, whereas the rest of the most abundant predator groups, Carabidae, Araneae, Dermaptera, Opilionidae, Trombididae, and Heteroptera, were not caught in significantly different numbers in treated or untreated plots.

Keywords: Carabidae; Orius; corn; imidacloprid; predator

Document Type: Research Article

DOI: http://dx.doi.org/10.1603/0022-0493-96.6.1805

Publication date: December 1, 2003

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
  • Editorial Board
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Visit this journal's homepage
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more