(n.) The act of shedding, or casting off, an outer cuticular layer, as in the case of serpents, lobsters, etc.; a coming out; as, the ecdysis of the pupa from its shell; exuviation.
Example Sentences:
(1) At the culmination of each molt, the larval tobacco hornworm exhibits a pre-ecdysis behavior prior to shedding its old cuticle at ecdysis.
(2) The time course of hormonal peaks in decapitated females resembles that in starved females during the first post-ecdysial week, suggesting that some as yet unknown regulating mechanism of ECD production lies outside the head.
(3) mortality was high), while the nymphal instars showed an adverse effect on ecdysis and adults which emerged from the treated last nymphal instar were characterized by high mortality, abnormal behaviour and reduced fecundity and viability.
(4) Post-thoracic ligation of animals at ecdysis blocks nucleolar changes as well as the appearance of polyploid nuclei.
(5) The effects of the insect growth regulator diflubenzuron (DFB) were observed on the larval-larval and larval-pupal moulting cycles of Tenebrio molitor, after treatment at ecdysis.
(6) In the hemolymph of the silkworm, Bombyx mori, lectin with hemagglutinating activity against sheep red blood cells increases at larval-larval ecdysis and at spinning stage (Suzuki and Natori, 1983) and is induced by infection with cytoplasmic polyhedrosis virus.
(7) Mature 4th stage microbodies decrease in size before ecdysis to the 5th stage when they atrophy at the same time as the new 5th stage generation arises.
(8) The second factor accelerates ecdysis in nonregenerating animals and appears to be produced in the eyestalks.
(9) We have found that the ability to produce the larval-like ecdysis pattern is retained in the adult.
(10) Our results on regressing Y organs of parasitized crabs are compared with those on regressing ecdysial glands of insects.
(11) In both cases the analyses were carried out from the fourth larval ecdysis to the beginning of spinning.
(12) This induction of precocious ecdysis is always accompanied by an inhibiting effect on regeneration: tiny abnormal regenerates or none are obtained.
(13) The ecdysial glands (Y organs) of the crab Carcinus maenas regress in the presence of an external parasite, Sacculina carcini.
(14) After an amputation close to the pupal ecdysis, fragments are obtained, and these incomplete structures show that the restoration process has ceased.
(15) During the week prior to the terminal ecdysis, developing moths still enclosed within the pupal cuticle produced motor patterns similar to those recorded from adults during flight and shivering.
(16) The declining titer is known to influence the timing of ecdysis, and it was found that the median ecdysis time of females occurs 1 day before that of males even when males and females are synchronized with each other using a developmental marker on Day 14.
(17) After adult ecdysis, the epidermal cells continue to deposit endocuticle.
(18) Argentaffin materials (polyphenols) first appear in these same sites at the time of ecdysis and increase rapidly during the next 24 h. Lipid appears in the lumen of the distal parts of the pore canals (with a patchy distribution) shortly before ecdysis.
(19) An important decrease of the hormone titer is observed at ecdysis.
(20) The pair of epidermally derived Verson's glands on each segment of the tobacco hornworm, Manduca sexta, secretes at ecdysis proteinaceous products which coat the epicuticle.
Moulting
Definition:
() of Moult
Example Sentences:
(1) In cultures of medium ML-15 containing a feeder layer of Dog Sarcoma (DS) cells larvae successfully moulted and showed a small but significant increase in length.
(2) Neither was the autumn moult, induced early in intact females by the change to a short photoperiod, advanced in ganglionectomized females, showing that the latter were unresponsive to the artificial modification of the photoperiod.
(3) Statistical analysis has shown the following: a) the growth inhibition, which is especially distinct in autumn-spring generation, takes place in the Ist instar larvae 1.76-2.20 mm long inhabiting the walls of the nasal cavity and concha (their average body length at hatching is 1.08 plus or minus 0.004 mm); the inhibition is associated with interpopulation relations and apparently does not depend on the date of its beginning and can last from 6 to 7 months; c) after the growth resumption the development continues uninterruptedly up to the moulting; the inhibition is also possible at the beginning of the 2nd instar and then the development proceeds without any intervals up to the complete maturation of larvae.
(4) A sharp rise in trehalose level of haemolymph is observed towards the end of 4th instar accompanied with sudden fall of the sugar in fat body during the same period, but after moulting blood trehalose abruptly decreases.
(5) The allatectomy in the 4th instar larvae of Rhodnius prolixus stops moulting in 93 per cent of the cases.
(6) The metathoracic musculature of the American cockroach Periplaneta americana was denervated by dissecting the nerves originating in the metathoracic ganglion on one side within 2 days after the last moult.
(7) Body-plumage of hens moulted at 11 degrees C was 25% heavier than of hens moulted at 29 degrees C. 3.
(8) One hour after infection, primary larvae appear in the body cavity where they moult immediately.
(9) In females, however, the number of NSG was relatively more than that in males in the Spring premigratory phase but fewer in the moulting phase.
(10) Food intake raises and decreases gradually between two moults.
(11) Trans-stadial transmission was demonstrated through one moult only, and transovarial transmission did not occur.
(12) This in vitro assay, based solely on the occurrence or absence of worm aggregation following the final moult in culture, proved very easy to interpret rapidly and accurately.
(13) A molecular modeling study has proposed that, when Ca2+ binds to the N-terminal triggering sites, helices B and C separate from the helices D and A, thereby exposing a crucial interaction site for troponin I, the inhibitory subunit of troponin [Herzberg, O., Moult, J., and James, M. N. G. (1986) J. Biol.
(14) Three developmental stages were investigated--1 day, 14 days, and 6 weeks after adult moulting.
(15) The effects of the insect growth regulator diflubenzuron (DFB) were observed on the larval-larval and larval-pupal moulting cycles of Tenebrio molitor, after treatment at ecdysis.
(16) Virus persisted transstadially as shown by the presence of an average of 10(3.4) PFU in newly moulted adults.
(17) Cauterization of the pars intercerebralis after the critical period of the prothoracic gland activity does not affect moulting in any way.
(18) In normal, non-expanding toad epidermis more cells are produced than needed to replace cells lost by moulting.
(19) Variation in temperature (4-40 degrees C) had a significant effect on moulting rate of the ticks and transmission of theilerial parasites from nymphs to resultant adults.
(20) Thymus enlargement in both young and adults has been found to be accompanied by marked erythropoietic activity within the gland, and it is suggested that this activity is related to an increased demand for erythrocytes which may occur during moult and breeding.