Plant genotypes are known to affect performance of insect herbivores and the community structure of both herbivores and higher trophic levels. Still, only a limited number of studies demonstrate differences in the performance of predators and parasitoids because of plant genotypic effects and most of these focus on gall formers. We designed a greenhouse experiment to investigate the effects of ...

A series of field experiments was conducted in cranberry bogs in 2006e2010 to determine adult attraction of the two most economically important leafhopper pests of cultivated Vaccinium spp. in the northeast USA, the blunt-nosed leafhopper, Limotettix vaccinii (Van Duzee), and the sharp-nosed leafhopper, Scaphytopius magdalensis (Provancher), to colored (yellow, green, red, blue, white, and clea...

Methyl salicylate (MeSA) is a herbivore-induced plant volatile that has shown potential in attracting natural enemies. Here, we conducted a meta-analysis to evaluate the magnitude of natural enemy response to MeSA in the field, and tested its attractiveness to insect predators in commercial cranberry bogs. Eighteen experiments from 14 publications were used in the meta-analysis, resulting in 91...

Abstract Intensive vegetable crop rotations can have detrimental effects on soil health, draining of organic matter reserves and necessitating nitrogen (N) inputs. In addition, many leave little time or space to integrate beneficial arthropod pollinator habitat into rotations; the lack may cause declines in arthropods, which lead insufficient pollination services increased pest pressure. Nine t...

Brazil is the country which has produced most coffee for over 150 years, and to achieve high productivity, pesticides are common control measure pests. Due need adopt less impactful practices, natural enemies or insecticides of botanical origin have been studied as alternatives synthetic insecticides. However, can negatively affect some enemies, effect depends on formulation concentration. The ...

S insects have evolved audition and evasive behaviors in response to selective pressure from bats, and other insects were preadapted to detecting ultrasonic signals. Some bats have evolved in turn, improving the range or resolution of sonar signals and serendipitously making them less detectable by insects. In other words, there is a kind of evolutionary escalation going on between bats and ins...

Abstract Background Hundreds of studies on environmental effects genetically modified (GM) crops became available over the past 25 years. For maize producing insecticidal proteins from Bacillus thuringiensis (Bt), potential adverse non-target organisms are a major area concern and addressed in risk assessments. Reviews meta-analyses have helped various stakeholders to address uncertainties rega...

Glassy-winged sharpshooter (GWSS) egg-specific monoclonal antibody (MAb) and GWSS-specific genetic markers have been developed for use as diagnostic tools for predator gut content analysis. Feeding trials were conducted to determine how long a MAb-based ELISA can detect GWSS remains in the guts of Chrysoperla carnea and Harmonia axyridis. We found that C. carnea can yield positive ELISA reactio...