Predation is often a key factor maintaining insect populations below pest status in annual crops. However, in many cases, the predators causing significant mortality to particular pests in the field are not well understood. In particular, the complex of nocturnally active predators feeding on pest species is usually unknown. The predator complexes attacking lepidopteran eggs in cotton, corn and...

The temporal development of biological control of arthropod pests in perennial cropping systems is largely unreported. In this study, the development of biological control of twospotted spider mite, Tetranychus urticae Koch, and hop aphid, Phorodon humuli (Schrank), in a new planting of hop in Oregon is described over a period of 9 yr (2005-2013). Both the abundance and diversity of natural ene...

In this paper, we analyze databases [corrected] on birds and insects to assess patterns of functional diversity in human-dominated landscapes in the tropics. A perspective from developed landscapes is essential for understanding remnant natural ecosystems, because most species experience their surroundings at spatial scales beyond the plot level, and spillover between natural and managed ecosys...

Abstract Generalist predators are increasingly used in biological pest control for greenhouse crops, as they multiple pests and persist crops even when prey is scarce. However, some of these may cause plant damage due to their omnivorous feeding behaviour. In many European regions, the predator Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae) considered be a serious tomato pest, regardless ser...

William F. Fagan Mark A. Lewis Michael G. Neubert and P. van den Driessche Department of Biology, Arizona State University, Tempe, AZ 85287±1501, USA. Tel. 480-965-8263. Fax +480-965-2519. E-mail [email protected] Department of Mathematics, University of Utah, Salt Lake City, UT 84112, USA. Current Address: Department Mathematical Sciences and Department Biological Sciences, University of Alberta,...