Colorado Potato Beetle, Leptinotarsa decemlineata (Say) is a serious pest of potato plants and devastates additional crops such as eggplant, tomato, pepper, and tobacco by its voracious feeding. Plants of the Lamiaceae family produce a large number of polyphenols with insecticidal activity. In this study we tried to identify if some of these compounds could be used as antifeedants and if there ...

Fungi that occur inside asymptomatic plant tissues are known as fungal endophytes. Different genera of fungal entomopathogens have been reported as naturally occurring fungal endophytes, and it has been shown that it is possible to inoculate plants with fungal entomopathogens, making them endophytic. Their mode of action against insects appears to be due to antibiosis or feeding deterrence. Res...

The first chemical study of the Indo-Pacific dorid nudibranch Aldisa andersoni resulted in the isolation of five chlorinated phenyl-pyrrolyloxazoles belonging to the phorbazole series. Two new molecules, 9-chloro-phorbazole D and N1-methyl-phorbazole A, co-occurring with known phorbazoles A, B and D, have been characterized. Phorbazoles were found to be present mainly in the external part of th...

Citronellal, a well-known plant-derived mosquito repellent, was previously reported to repel Drosophila melanogaster via olfactory pathways involving but not directly activating Transient Receptor Potential Ankyrin 1 (TRPA1). Here, we show that citronellal is a direct agonist for Drosophila and human TRPA1s (dTRPA1 and hTRPA1) as well as Anopheles gambiae TRPA1 (agTRPA1). Citronellal-induced ac...

Spodoptera frugiperda is a pest of worldwide importance, responsible for significant economic losses, mainly in maize crops. The use botanical derivatives emerges as promising alternative to control this insect pest. In work, we evaluated the effect ethanolic extracts (EE) and semi-purified fractions Acnistus arborescens Datura stramonium (Solanaceae) on biological development S. effects feedin...

Influencing discretionary driver behaviours in Australia relies very much on the coercive strategy of deterrence. This paper stems from a thorough review of deterrence theory and risk taking carried out in 2002-03 for the Land Transport Safety Authority, New Zealand (Elliott, 2003). The paper begins by exploring the definition of deterrence leading to the proposition that if motorists do not re...

The aim of this study was to determine the insecticide potential essential oils (EOs) thyme (Thymus vulgaris; Lamiaceae) and ginger (Zingiber officinale; Zingiberaceae) control cotton leaf worm (Spodoptera littoralis; Lepidoptera: Noctuidae) under laboratory conditions. Generally, there a positive correlation between magnitude above toxic effects concentrations all EOs. Ginger oil (GEO) showed ...

Helicoverpa armigera Hübner is one of the most important agricultural crop pests in the world causing heavy crop yield losses. The continued and indiscriminate use of synthetic insecticides in agriculture for their control has received wide public apprehension because of multifarious problems, including insecticide resistance, resurgence of pest species, environmental pollution, and toxic hazar...