Ecdysis
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
External links
- Medical encyclopedia article on Ecdysis
- Wikipedia's article - Ecdysis
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