Generalist Predator Consumption of Armyworm (Lepidoptera: Noctuidae) and Effect of Predator Removal on Damage in No-Till Corn
作者:
M. Sean Clark,
John M. Luna,
Nicholas D. Stone,
Roger R. Youngman,
期刊:
Environmental Entomology
(OUP Available online 1994)
卷期:
Volume 23,
issue 3
页码: 617-622
ISSN:0046-225X
年代: 1994
DOI:10.1093/ee/23.3.617
出版商: Oxford University Press
关键词: Pseudaletia unipuncta;generalist predators;corn
数据来源: OUP
摘要:
Consumption of armyworm,Pseudaletia unipunctaHaworth, by generalist predators and the role of generalist predators in protecting corn plants from armyworm feeding damage were evaluated in laboratory feeding trials and in a predator-removal field study, respectively. Thirteen of the fifteen taxa evaluated in the laboratory feeding trials fed upon armyworm larvae. The highest consumption rates were exhibited by the carabidsPterostichus chalcitesSay,Pterostichus lucublandusSay, andScarites subterraneusF.; the staphylinid,Platydracus maculosusGravenhorst; and the lycosid,Lycosa helluoWalckenaer. The most common potential armyworm predators removed from the field with pitfall traps included ground beetles (Carabidae), rove beetles (Staphylinidae), ants (Formicidae), and spiders (Araneae). Armyworm damage to corn plants was significantly greater where generalist predators were removed using pitfall traps and exclusion arenas than in the control where predator populations were unaltered.
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