By Anne-Geneviève Bagnères, Martine Hossaert-McKey
The combo of the 2 phrases "ecology" and "chemistry" has lately come into being for researchers, biologists and chemists operating on the interface of biology and chemistry. Chemical ecology is now a whole examine box in itself. such a lot residing species converse with one another via molecules and chemical signs referred to as mediators. The chemical language, utilizing chemical mediators rather than phrases, is a common language in nature, and looks integral to the upkeep of terrestrial and aquatic ecosystems. Chemical verbal exchange is by way of a long way the main used technique of communique within the dwelling global. attempting to comprehend the language of nature, ecologists and chemists are confronted with the complexity and creativity of organisms. This publication offers the main complicated and sundry features of this becoming self-discipline. It offers, in comparison to different to be had books which commonly take care of particularly easy structures, twin or tritrophic relationships round a small variety of version organisms and chemical mediators, a holistic view of chemical ecology. Read more...
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Unlike the previous study, significant differences were found between the chemical composition of the defense metabolites and their concentration in the leaves. The relative abundance of four classes of chemical products known for their defense role (flavonols, flavones, derivatives of quinic acid and oxidized monoterpenes) varies according to the type of the habitat and the geographic location. Derivatives of quinic acid are present in high concentrations in populations of P. serratum of Terra firma (transplanted or non-transplanted), but they are totally absent in populations of white sand forests.
G. role of bryostatin as a repellent against predators) (photo: Wilfried Thomas – Station Biologique de Roscoff) 38 Chemical Ecology Another very important aspect in which chemical ecology aided significant advances is the study of behavioral changes observed in numerous nonindigenous species following their introduction. The most demonstrative cases include colonies of social insects, particularly the evolution of unicolonial populations, called, in certain cases, super colonies. For example the Argentine ant (Linepithema humile), the small fire ant (Wasmannia auropunctata) and the fire ant (Solenopsis invicta), and also the underground termites of Europe of invasive origin such as Reticulitermes urbis and R.
4). Indeed, these Chemical Ecology: An Integrative and Experimental Science 41 compounds (which can be emitted at the level of the attacked parts of the plant or systemically by the whole plant) can help locate and identify their phytophagous hosts or prey at a distance [DIC 10]. Thus, the attacks on tobacco plants by two close species of caterpillars, Heliothis virescens and Helicoverpa zea, induce the emission of a bouquet of VOCs composed of the same molecules, but at different concentrations.