Ecdysis

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Ecdysis

Ecdysis (pronounced: /ˈɛkdɪsɪs/) is a biological process that involves the shedding or casting off of old skin or exoskeleton in various animal species, particularly invertebrates. This process is also known as moulting or molting.

Etymology

The term "ecdysis" originates from the Greek word "ἐκδύω" (ekduo), which means "to take off" or "to strip off".

Process

During ecdysis, the animal secretes a new, larger exoskeleton or skin beneath the old one. Once the new exoskeleton is fully formed, the animal will typically increase its intake of water to swell its body and break the old exoskeleton, allowing it to be shed. The new exoskeleton then hardens.

Animals that Undergo Ecdysis

Ecdysis is most commonly associated with arthropods, a group that includes insects, spiders, and crustaceans. However, other animals such as snakes and lizards (part of the reptile group) also undergo ecdysis.

Related Terms

See Also

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