Entomology

Borror and DeLong-s Introduction to the Study of Insects

5 stars (Important for both biologists and non-biologists) - Everything about insects is fascinating, and this book gives a comprehensive overview of their behavior, anatomy, and classification. For non-experts in entomology, such as this reviewer, the book provides the necessary background for further study. Topics such as the molecular genetics of insects and the genetic engineering of insects are not covered, but there are plenty of other books that treat these topics in detail. Only the first four chapters were read by this reviewer, but only chapter four will be discussed here. Early on in chapter four, the authors dispel the prejudice that since insects have small nervous systems and have short life spans, they are not automatons and can exhibit a remarkable degree of spontaneity. Insects can adjust to the circumstances of their environment and the organization of their activities can be extremely complex. What is most interesting about their discussion of insect behavior is the emphasis on how it depends on the internal state of the insect, and not only its nervous system but also its internal organs. The authors view the basic unit of behavior in an insect as being a `refle'x. A receptor that is stimulated will cause a particular group of insects to contract, which is observed as a body movement of the insect. A `releaser' is the stimulus that actually triggers a specific collection of movements. This results in what is called a `fixed-action pattern', which, as the name implies, occurs the same way every time it occurs. To be contrasted with these are the `modal-action patterns' that adapt to changes in the body position of the insect relative to external objects. A `central pattern generator' the authors write, is responsible for the leg and wing movements of insects, and allows them to navigate in noisy environments. All of these considerations of insect behavior are interesting in themselves, but even more so considering that they are being applied t...
Brooks Cole :: Science & Entomology :: United States :: Science :: Nature&Ecology :: Nature :: Life Sciences - Zoology - Entomology :: Insects & Spiders :: Insects :: Entomology :: Ch :: Borror and DeLong-s Introduction to the Study of Insects