sclerotization

biology

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July 13, 2026

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Sclerotization is a biological process where protein chains in the cuticle of arthropods are stabilized by cross-links, forming a tough, hardened material called sclerotin. This process is essential for creating a rigid exoskeleton, which provides structural support and protection. Sclerotin is a dark-brown pigment that not only hardens the cuticle but also helps shield against harmful light rays. This hardened cuticle is crucial for terrestrial arthropods to prevent dehydration and serves as a waterproof covering. The term "sclerotized" describes something that has been hardened, especially through the formation of sclerotin.123

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ecdysis
Post-ecdysis
…followed by cuticle hardening and sclerotization, when quinones in the cuticle form cross-links with cuticular proteins and chitin, stabilizing and stiffening the cuticle and sometimes imparting color. In some insects, such as beetles, cuticular hardening can take several weeks and may involve the deposition of additional layers of proteins and…
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…followed by cuticle hardening and sclerotization, when quinones in the cuticle form cross-links with cuticular proteins and chitin, stabilizing and stiffening the cuticle and sometimes imparting color. In some insects, such as beetles, cuticular hardening can take several weeks and may involve the deposition of additional layers of proteins and…
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skeleton
Crystals
…cuticle of arthropods either by sclerotization or tanning, a process involving dehydration (as in crustaceans and insects), by calcification (as in millipedes), or by both, as in many crabs. In most arthropods the body and legs are clearly segmented. On the dorsal (upper) side of each segment is a so-called…
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…cuticle of arthropods either by sclerotization or tanning, a process involving dehydration (as in crustaceans and insects), by calcification (as in millipedes), or by both, as in many crabs. In most arthropods the body and legs are clearly segmented. On the dorsal (upper) side of each segment is a so-called…
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integument
Arthropods
Sclerotization involves the molecular stabilization of the protein chains of the cuticles by establishment of cross-links. Sclerotin, the product of sclerotinization, is a kind of natural plastic. In its horny consistency it closely resembles keratin; both are cross-linked, or polymerized, proteins, but the chemical nature…
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Sclerotization involves the molecular stabilization of the protein chains of the cuticles by establishment of cross-links. Sclerotin, the product of sclerotinization, is a kind of natural plastic. In its horny consistency it closely resembles keratin; both are cross-linked, or polymerized, proteins, but the chemical nature…
Read More