What's the difference between ecdysis and sloughing?

Ecdysis


Definition:

  • (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.

Sloughing


Definition:

  • (p. pr. & vb. n.) of Slough
  • (n.) The act of casting off the skin or shell, as do insects and crustaceans; ecdysis.

Example Sentences:

  • (1) Mucosal sloughing with hemorrhage and infarction were observed at 3 hours.
  • (2) More suppliers have told the Guardian of extensive negotiations with Amazon staff in Slough, adding to the impression that the company carries out important trading activities in the UK and so could be liable for tax.
  • (3) In mammalian small intestine absorptive cells are known to migrate from the villus base to the villus tip from which they slough.
  • (4) The most marked effect of the ZnSO4 took the form of necrosis and sloughing of surface cells in both strains one-half day after ZnSO4 irrigation.
  • (5) Cameron’s call for the Malaysian political class to fight corruption came as he pitched the country’s financiers the chance to invest in £17bn worth of UK infrastructure projects ranging from a Leeds orbital road route, Slough town centre and prime residential properties along the Thames.
  • (6) The histopathologic features include peritubular sclerosis, small vessel sclerosis, premature germ cell sloughing, and variable degrees of hypospermatogenesis.
  • (7) Changes in sperm head morphology are caused by (1) a dramatic reshaping and consolidation of the acrosome in which excess plasma membrane overlying it is sloughed as a cluster of vesicles, (2) a reorientation of the nucleus almost parallel to the axis of the tail and (3) distal movement of the droplet from its initial envelopment of the nucleus to an eccentric position on the anterior segment of the midpiece.
  • (8) Acute hypothermia induced a sloughing of cells from the villi into the lumen of the gut, as indicated by an increased DNA in luminal washings.
  • (9) Toxic epidermal necrolysis results in skin sloughing that resembles a partial-thickness thermal injury.
  • (10) Scanning electron microscopy revealed that in diabetic BB rats there was consistent evidence of swollen cells, raised nuclei, and sloughing of nuclei in endothelial cells of the aorta.
  • (11) However, after sloughing of labelled cells in the intestinal lumen, Pu was reabsorbed by the distal epithelial cells.
  • (12) It places the implant deep to prevent skin slough and irregularities in skin surface contour.
  • (13) Newer communities have settled in towns and cities such as Milton Keynes, Slough, Northampton, Southampton, and in London, notably Ealing, Tower Hamlets and Newham.
  • (14) Sloughing vesiculobullous oral lesions are a frequent component.
  • (15) Within 1 day of injury, columnar epithelium sloughed intact from the trachea with a concomitant reduction of nearly 35% in the basal cell population.
  • (16) Early changes (0-2 hours) included focal tumor and endothelial cell vacuolation and swelling as well as sloughing of tumor cells into papillary spaces.
  • (17) Histologically, the 4.0 ppm animals demonstrated bronchiolar epithelial necrosis and sloughing, bronchiolar edema with macrophages, and focal pulmonary edema.
  • (18) Ciliated cells had a slightly vesiculated cytoplasm, and many were in the process of being sloughed from the epithelial surface.
  • (19) Preliminary histochemical studies show that terminin is also found in the superficial epithelial layer of the esophagus, where terminal differentiation is followed by apoptosis and sloughing off into the lumen.
  • (20) In both the mouse and the rat, some of the superficial cells sloughed between fetal day 18 or 19 and the day of birth.

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