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

... kcal 21. 5% 13 .2% 13 .0% 19 .7% Protein 37 g 38.4 26.3 76.3 18 .1 Calcium 1 g 4.0 5.0 35.5 18 .6 Phosphorus 1 g 43.8 54.6 69.5 31. 4 Magnesium 400 mg 10 4.2 57.8 13 .5 7.5 Iron 18 mg 41. 7 10 .6 19 7.2 ... 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 populati...

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... 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 ... case when the photoperiodic response of the maternal generation of silkworms affects the eggs of the next generation. The ability of insects to recognize seaso...

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... 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 ... further experimental evidence is required to quantify these beneficial roles. 9 .1. 1 Root-feeding insects Out -of- sight herbivores feeding on the roots of pla...

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... a poison-injecting sting (Fig. 14 .11 ) and the eggs are ejected at the base of the sting. In all other cases, the eggs pass down a canal in the shaft of the ovipositor (section 5.8). The shaft ... 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...

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... mixture of hormones, including JH-I, JH-II, JH- III, and JH-0. The occurrence of mixed-JH-producing insects (such as the tobacco hornworm, Manduca sexta) Box 3 .1 Molecular genetic techniques and their ... including: the meta- bolism of carbohydrates, lipids, and nitrogenous com- pounds; the storage of glycogen, fat, and protein; the synthesis and regulation of blood su...

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... 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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... 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 flashing lights of fireflies, the singing of crickets, ... 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...

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... stylets, the right Class Insecta (true insects) 19 1 TIC07 5/20/04 4:45 PM Page 19 1 Box 7 .1 Relationships of the Hexapoda to other Arthropoda The immense phylum Arthropoda, the joint-legged animals, ... 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 t...

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... 3.5, Fig. 3 .11 ). Aquatic insects and their oxygen supplies 2 41 TIC10 5/20/04 4:43 PM Page 2 41 258 Aquatic insects Box 10 .6 Other aquatic orders TIC10 5/20/04 4:43 PM Page 258 240 Aquatic insects Every ... 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 terre...

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... sucked up into the insect’s gut. Only the stylets enter the tissues of the host plant (Fig. 11 .4a). They may penetrate Phytophagy (or herbivory) 2 71 TIC 11 5/20/04 4:42 PM Page 2 71 280 Insects and ... the award of the UNESCO Science Prize in 19 85. Taxonomists made essential contributions by estab- lishing the true identities of the salvinias and the weevil...

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