The Insects - Outline of Entomology 3th Edition - Chapter 10 pdf

The Insects - Outline of Entomology 3th Edition - Chapter 10 pdf

The Insects - Outline of Entomology 3th Edition - Chapter 10 pdf

... hundreds of kilometers from shore in the Pacific Ocean. The dis- tribution of these insects coincides with mid-oceanic accumulations of flotsam, where food of terrestrial origin supplements a diet of ... proponents of the pre- ferred exite–endite theory speculate that the progenitor of the pterygotes had aquatic immature stages. Support for the latter hypothesis app...
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The Insects - Outline of Entomology 3th Edition - Chapter 7 pdf

The Insects - Outline of Entomology 3th Edition - Chapter 7 pdf

... as wings held roof-like over the abdomen, fore wings either membranous or in the form of tegmina of uni- form texture, and with the rostrum arising ventrally close to the anterior of the thorax, ... or mistaken. The fore-wing-derived halteres of strep- sipterans are gyroscopic organs of equilibrium with the same functional role as the halteres of Diptera (although...
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The Insects - Outline of Entomology 3th Edition - Chapter 1 ppt

The Insects - Outline of Entomology 3th Edition - Chapter 1 ppt

... 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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The Insects - Outline of Entomology 3th Edition - Chapter 2 pot

The Insects - Outline of Entomology 3th Edition - Chapter 2 pot

... 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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The Insects - Outline of Entomology 3th Edition - Chapter 3 potx

The Insects - Outline of Entomology 3th Edition - Chapter 3 potx

... to the function of the ringed hose of a vacuum cleaner). The cuticular linings of the tracheae are shed with the rest of the exoskeleton when the insect molts. Usually even the linings of the ... 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...
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The Insects - Outline of Entomology 3th Edition - Chapter 4 ppsx

The Insects - Outline of Entomology 3th Edition - Chapter 4 ppsx

... 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 image formed by the compound eye is of a series of apposed ... 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 respo...
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The Insects - Outline of Entomology 3th Edition - Chapter 5 pot

The Insects - Outline of Entomology 3th Edition - Chapter 5 pot

... transfer of sperm via the insertion of part of the male’s aedeagus (edeagus), the penis, into the repro- ductive tract of the female. In males of many species the extrusion of the aedeagus during ... oviposition in insects. 5.1 BRINGING THE SEXES TOGETHER Insects often are at their most conspicuous when syn- chronizing the time and place for mating. The flas...
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The Insects - Outline of Entomology 3th Edition - Chapter 6 pptx

The Insects - Outline of Entomology 3th Edition - Chapter 6 pptx

... further discus- sion of the actions of eclosion hormone). Apolysis at the end of the fifth larval instar marks the beginning of a prepupal period when the developing pupa is pharate within the ... affects the eggs of the next generation. The ability of insects to recognize seasonal photo- period and other environmental cues requires some means of measuring tim...
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The Insects - Outline of Entomology 3th Edition - Chapter 9 ppt

The Insects - Outline of Entomology 3th Edition - Chapter 9 ppt

... complex circulation of air through the passageways of the nest, as illustrated for the above-ground nest of the African Macrotermes natalen- sis in Fig. 12 .10. The origin of the mutualistic relationship ... farming by leaf-cutter ants The subterranean ant nests of the genus Atta (15 spe- cies) and the rather smaller colonies of Acromyrmex (24 species) are amongs...
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The Insects - Outline of Entomology 3th Edition - Chapter 11 ppsx

The Insects - Outline of Entomology 3th Edition - Chapter 11 ppsx

... 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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