Ecdysis | 台北市立動物園資訊網

EcdysisisthemoultingofthecuticleinmanyinvertebratesofthecladeEcdysozoa.Sincethecuticleoftheseanimalstypicallyformsalargelyinelastic ...

Ecdysis is the moulting of the cuticle in many invertebrates of the clade Ecdysozoa. Since the cuticle of these animals typically forms a largely inelastic exoskeleton, it is shed during growth and a new, larger covering is formed.[1] The remnants of the old, empty exoskeleton are called exuviae.[2]

After moulting, an arthropod is described as teneral, a callow; it is "fresh", pale and soft-bodied. Within one or two hours, the cuticle hardens and darkens following a tanning process analogous to the production of leather.[3] During this short phase the animal expands, since growth is otherwise constrained by the rigidity of the exoskeleton. Growth of the limbs and other parts normally covered by hard exoskeleton is achieved by transfer of body fluids from soft parts before the new skin hardens. A spider wi...