ecdysis


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Related to ecdysis: instar

ec·dy·sis

(ek'di-sis),
Desquamation, sloughing, or molting as a necessary phenomenon to permit growth in arthropods and skin renewal in amphibians and reptiles.
[G. ekdysis, shedding]

ecdysis

(ĕk′dĭ-sĭs)
n. pl. ecdy·ses (-sēz′)
The shedding of an outer integument or layer of skin, as by insects, crustaceans, and snakes; molting.

ecdysis

The shedding of the outer layer of the skin. The term is usually applied to the common process occurring during the development of various insects, such as Ophidia and many of the Arthropoda, but is sometimes used as a synonym for EXFOLIATION in humans.

ecdysis

the process of moulting the cuticle in insects, usually in the preadult stage. The old cuticle is split and cast off to reveal a new, soft cuticle underneath; the insect increases in size, often by intake of air, and the new cuticle hardens. Each larval stage is referred to as an INSTAR, so that the first instar is terminated by the first ecdysis, the second instar by the second ecdysis. Ecdysis is initiated by the MOULTING HORMONE.

ecdysis

shedding of the external layers of the skin—only the epidermis participates. Is controlled by the endocrine glands. May be complete or incomplete due usually to poor nutrition. Called also exuviate. See also dysecdysis.
References in periodicals archive ?
Date observed Observations 1 14 Aug 2012 Adult female and male observed under rock together 29 July 2013 2 14 Aug 2012 3 2 Sept 2012 1 gravid, 1 post-partum female, 1 adult male observed 29 July 2013 24 Aug 2013 2 gravid females (1 telemetered and observed in ecdysis) 4 1 Aug 2013 5 1 Aug 2013 Male and female observed copulating 10 Aug 2013 Gravid female observed 2 Sept 2013 Telemetered adult male observed in ecdysis 6 10 Aug 2013 7 2 Sept 2013
Methoxyphenozide is a diacyl hydrazine group product and acts as an agonist of the ecdysteroids, causing acceleration in the ecdysis process (Omoto 2000).
Complex steroidpeptide-receptor cascade controls insect ecdysis," General and Comparative Endocrinology, vol.
Observations on ecdysis in modern scorpions support the criteria defined here of appendage position and body posture as diagnostic for distinguishing carcasses and exuvia.
Ecdysis takes approximately five to seven days, during which time the snake is unable to see and should be handled carefully or, preferably, not at all.
The present study is thus significant for providing additional information on the ecdysis and biometry of this species, considered the largest of Brazilian snakes.
The crabs received injections of serotonin underwent ecdysis at a much slower rate than did the controls in a dose dependent mode.
After ecdysis, one or two leaflets were supplied to the cup every day until pupation.
In a generally more mobile and active species, Coluber constrictor, Plummer & Congdon (1994) found that 90% of inactivity was associated with ecdysis.
Transit rate was significantly slower in snakes undergoing ecdysis (P= 0.
Autotomy of limbs stimulates ecdysis (molt), and it is difficult to assess whether changes in molt are due to this physiologic response or to PAH effects.