Schaums Outline of Biochemistry, Third Edition (Schaums Outlines) Philip Kuchel and Simon EasterbrookSmith

... CONSERVATION OF INSECTS, 1.1 What is entomology? 1.2 The importance of insects, 1.3 Insect biodiversity, 1.4 Naming and classification of insects, 1.5 Insects in popular culture and commerce, 1.6 Insects ... Close-up of the second-instar male nymphs of Cystococcus pomiformis feeding from the nutritive tissue lining the cavity of the maternal gall (see p 12) (P.J G...

Ngày tải lên: 06/07/2014, 22:20

... 37 g 1g 1g 400 mg 18 mg mg 15 mg 1. 5 mg 1. 7 mg 20 mg 21. 5% 38.4 4.0 43.8 10 4.2 41. 7 680.0 – 8.7 67.4 47.7 13 .2% 26.3 5.0 54.6 57.8 10 .6 70.0 – – – – 13 .0% 76.3 35.5 69.5 13 .5 19 7.2 12 0.0 15 3.3 ... numbers of insects is the role of sexual selection in the diversification of many insects The propensity of insects to become isolated in small populations...

Ngày tải lên: 06/07/2014, 22:20

... Fig 2. 22 The left wings of a range of insects showing some of the major wing modifications: (a) fore wing of a butterfly of Danaus (Lepidoptera: Nymphalidae); (b) fore wing of a dragonfly of Urothemis ... (Fig 2. 22a) and the triangle in Odonata (Fig 2. 22b) The pterostigma is an opaque or pigmented spot anteriorly near the apex of the wing (Figs 2. 20 & 2. 2...

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... including JH-I, JH-II, JHIII, and JH-0 The occurrence of mixed-JH-producing insects (such as the tobacco hornworm, Manduca sexta) TIC 03 5/20/04 4:48 PM Page 61 The circulatory system Fig 3. 8 The main ... 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 linin...

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... flexion of the joint gives a variable stimulus to the sensilla, thereby allowing TIC 04 5/20/ 04 4 :47 PM Page 87 Mechanical stimuli 87 knob-like modified hind wing of Diptera), at the base of which there ... that controls the mode of reproduction (i.e either sexual or parthenogenetic) The setting of the biological clock (Box 4. 4) relies upon the ability to detect ph...

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... cells produce the eggshell and the surface sculpturing of the chorion usually reflects the outline of these cells Typically, the eggs are yolk-rich and thus large relative to the size of the adult ... oviposition in insects 5. 1 BRINGING THE SEXES TOGETHER Insects often are at their most conspicuous when synchronizing the time and place for mating The flashing l...

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... exemplify the trade-offs associated with allometric growth TIC 06 5/20/04 4:45 PM Page 166 166 Insect development and life histories 6. 9.2 Age-grading of adult insects The age of an adult insect ... position in the egg Later, near the end of embryogenesis (Fig 6. 5h,i), the edges of the germ band grow over the remaining yolk and fuse mid-dorsally to form the lat...

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... view on many of the internal relationships of Insecta and their wider grouping, the Hexapoda These are discussed below 7. 2 THE EXTANT HEXAPODA The Hexapoda (usually given the rank of superclass) ... origin to the rest of the Hexapoda (see Box 7. 1) If Collembola belong to the Hexapoda, then they form either the sister group to Protura comprising the clade Ellipu...

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... calliphorids that follow shortly thereafter, as the corpse develops an odor All these flies either lay eggs or larviposit on the corpse The principal predators on the insects of the corpse fauna are staphylinid, ... range used by the family The use by insects of subterranean fungal bodies in the form of mycorrhizae and hyphae within the soil is poorly known The ph...

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... and 10. 2 THE EVOLUTION OF AQUATIC LIFESTYLES Hypotheses concerning the origin of wings in insects (section 8.4) have different implications regarding the evolution of aquatic lifestyles The paranotal ... gill” When the bubble has become too small, it is replenished by the insect returning to the surface The longevity of the bubble depends upon the relative rate...

Ngày tải lên: 06/07/2014, 22:20