The Insects - Outline of Entomology 3th Edition - Chapter 12 pps

... remarkable systems of the termites (Isoptera). The characteristics of these two orders, which contain the majority of the eusocial species, are given in Boxes 12. 2 and 12. 3. 12. 2.1 The primitively ... eliminated and the nest survives only until the workers of the host species die off. In a further twist of the complex social lives of ants, some species are...

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... across. The field of view of each ommatidium differs from that of its neigh- bors and together the array of all ommatidia provides the insect with a panoramic image of the world. Thus, the actual ... insensitive to the wing tone of males of their species. Neither can the male detect the wing tone of immature females – the Johnson’s organ in his antenna respond...

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... Interpreting the early evolution of the angiosperms is contentious, partly because of the paucity of fossilized flowers prior to the period of radiation, and also because of the apparent rapidity of the ... native range. The host-specificity of potential control agents must be tested, either inside or outside the country of introduction and, in the former case,...

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... species of insect parasitoids seen above, there are remarkably few insect parasites of other insects, or indeed, of other arthropods. The largest group of endoparasitic insects using other insects ... saw how the development of angio- sperms and their colonization by specific plant-eating insects explained a substantial diversification of phyto- phagous insects relativ...

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... distasteful- ness. The mimic gains both from the presence of the protected model and the deception of the observer. As the mimic’s presence disadvantages the model, interac- tion with the model ... produces a build-up of pressure in the reac- tion chamber, which closes the one-way valve from the reservoir, thereby forcing discharge of the contents through the...

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... It is the microfilariae that cause the damage to the eye when they invade the tissues and die there. The major black-fly vector has been shown to be one of the most extensive complexes of sibling ... feeds, they rupture the labella and invade the host through the puncture of the mosquito bite. In the human host the larvae mature slowly over many months. The sexe...

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... consumers of the produce. Successful IPM requires a thorough know- ledge of the biology of the pest insects, their natural enemies, and the crop to allow rational use of a variety of cultivation ... on non-target insects. For example, the widespread use of weed con- trol chemicals in fields of herbicide-resistant corn in the mid-western USA is leading to the loss...

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... numbers of insects is the role of sexual selection in the diversifica- tion of many insects. The propensity of insects to become isolated in small populations (because of the fine scale of their ... classification and their roles in our economic and wider lives. First, we outline the field of entomology and the role of ento- mologists, and then introduce the...

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... defensive and other com- pounds are products of the epidermis, which is a near- continuous, single-celled layer beneath the cuticle. Many of these compounds are secreted to the outside of the insect ... pair of gonostyles (the third valves) derived from the distal part of the appendages of segment 9 (and homo- logous with the styles of the apterygotes mentioned...

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... including: the meta- bolism of carbohydrates, lipids, and nitrogenous com- pounds; the storage of glycogen, fat, and protein; the synthesis and regulation of blood sugar; and the syn- thesis of major ... by the plant. By comparison, a macerate-and-flush strategy is typical of Heteroptera, such as mirids and coreids. These insects disrupt the tis- sues of plants or oth...

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