Chemoreception: The Significance of Receptor Numbers

摘要: Publisher Summary This chapter reviews the existing data on numbers of chemoreceptors legs, mouthparts, and antennae insects describes physiological characteristics sensilla. It discusses possible significance sensilla in relation to insect behavior evolution. The picture that emerges is fragmentary, but fragments should serve indicate fruitful lines research, which will lead a better understanding chemoreceptor populations numerical differences occur between them. apparent observed often be outcome interactions several, even many, chemosensory inputs. not, therefore, expected input from single receptor directly related except very simple situations. may true where tuned key stimulus. For example, bark beetles have few olfactory compared with many moths and, as consequence, they are probably less sensitive their attractant pheromone. However, beetle pheromones produced at host trees characteristic odor. also occurs much greater concentrations than pheromone so attraction distance can without sensory system.