Chemistry of insect cuticle. 3. Hardening and darkening of the cuticle
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چکیده
منابع مشابه
Fatigue of insect cuticle.
Many parts of the insect exoskeleton experience repeated cyclic loading. Although the cuticle of insects and other arthropods is the second most common natural composite material in the world, so far nothing is known about its fatigue properties, despite the fact that fatigue undoubtedly limits the durability of body parts in vivo. For the first time, we here present experimental fatigue data o...
متن کاملDesign and mechanical properties of insect cuticle.
Since nearly all adult insects fly, the cuticle has to provide a very efficient and lightweight skeleton. Information is available about the mechanical properties of cuticle-Young's modulus of resilin is about 1 MPa, of soft cuticles about 1 kPa to 50 MPa, of sclerotised cuticles 1-20 GPa; Vicker's Hardness of sclerotised cuticle ranges between 25 and 80 kgf mm(-2); density is 1-1.3 kg m(-3)-an...
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The cuticle of arthropods is complex and varies enormously in structure, properties and composition even within the same species (cf. Richards, 1951). However, the mechanical behaviour is dominated by materials in the solid state of matter so that the mature cuticles hitherto described in the literature may be classed as solid cuticle. It was therefore surprising to find that certain patches of...
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During work on the control of human pediculosis Craufurd-Benson & Macleod found that body lice, which normally have a high resistance to derris, were rapidly killed when high-boiling tar acids were added to the insecticide. A similar effect was observed in experiments with the sheep ked, Melophagus ovinus, when mixtures of cresylic acid and diphenylamine were applied either as a dusting powder ...
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Insects are among the most diverse groups of animals on Earth. Their cuticle exoskeletons vary greatly in terms of size and shape, and are subjected to different applied forces during daily activities. We investigated the biomechanics of the tibiae of three different insect species: the desert locust (Schistocerca gregaria), American cockroach (Periplaneta americana) and Death's Head cockroach ...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1953
ISSN: 0306-3283
DOI: 10.1042/bj0540371