Olfactory signals are often produced when the organism finds itself under stress. A possible definition is proposed for the meaning of the word stress, based on the concept of ecological niche. Taking bark beetles and wood borers as an example, insect primary attraction is analysed in relation to stress factors affecting their hosts. Secondary attraction is also considered for some scolytids. By sequestering volatiles from their hosts, with whom they established obligatory associations, specific pheromones are produced. Furthermore, bark beetles' predators evolved specific olfactory strategies, sometimes based on kairomonal cues, which are described.
|Number of pages||6|
|Journal||Verhandlungen - Gesellschaft fur Okologie|
|Publication status||Published - 1 Dec 1996|