Climate warming is expected to impact the response of species insecticides. Recent studies show that this interaction between insecticides and temperature can depend on other factors. Here, we tested for influence transgenerational effects Insecticide × Temperature in crop pest moth Spodoptera littoralis. Specifically, analysed reaction norms among experimental clutches based a split-plot desig...

The induced defense response in plants towards herbivores is mainly regulated by jasmonates and leads to the accumulation of so-called jasmonate-induced proteins. Recently, a jasmonate (JA) inducible lectin called Nicotiana tabacum agglutinin or NICTABA was discovered in tobacco (N. tabacum cv Samsun) leaves. Tobacco plants also accumulate the lectin after insect attack by caterpillars. To stud...

Adult Lepidoptera use their antennae to probe their distant and proximate environment with sensory organs which detect volatile and contact chemicals. In this work, we have investigated the role and the sensitivity of antennal contact chemoreceptors of Spodoptera littoralis. Adults of both sexes have long and filiform antennae composed of about 70 flagellomeres. Each flagellomere bears six tast...

for adaptation to the local mutualist in Medicago lupulina 2 Tia L. Harrison*, Corlett W. Wood*, Isabela L. Borges, and John R. Stinchcombe 3 4 1 Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario 5 M5S3B2, Canada 6 2 Centre for Genome Evolution and Function, University of Toronto, Toronto, Ontario, 7 M5S3B2, Canada 8 * These authors contributed equally to t...

The furanoeremophilanes 6 beta-angeloyloxy-1,10-dehydrofuranoeremophilan-9-one (1), 6 beta-hydroxy-1,10-dehydrofuranoeremophilan-9-one (2) and 6 beta-propionyloxy-1,10-dehydrofuranoeremophilan-9-one (3) were isolated from Senecio otites, their structures elucidated by spectral analyses, and their insecticidal and phytotoxic properties evaluated. Compounds 1-3 proved to be effective aphid antife...