(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.
Insect
Definition:
(n.) One of the Insecta; esp., one of the Hexapoda. See Insecta.
(n.) Any air-breathing arthropod, as a spider or scorpion.
(n.) Any small crustacean. In a wider sense, the word is often loosely applied to various small invertebrates.
(n.) Fig.: Any small, trivial, or contemptible person or thing.
(a.) Of or pertaining to an insect or insects.
(a.) Like an insect; small; mean; ephemeral.
Example Sentences:
(1) Employed method of observation gave quantitative information about the influence of odours on ratios of basic predeterminate activities, insect distribution pattern and their tendency to choose zones with an odour.
(2) Suspensions of isolated insect flight muscle thick filaments were embedded in layers of vitreous ice and visualized in the electron microscope under liquid nitrogen conditions.
(3) After treatment of larvae of instar 1 at preimago stages about 77% of the insects died.
(4) The presence of potential insect vectors and the occurrence of clinical signs are indications of active transmissions.
(5) Spectrophotometric tests for the presence of a lysozyme-like principle in the serum also revealed similar trends with a significant loss of enzyme activity in 2,4,5-T-treated insects.
(6) Radiation inactivation and simple target theory were employed to determine the molecular weight of an insect CNS alpha-bungarotoxin binding component in the presence and absence of a cross-linking reagent, dimethyl suberimate.
(7) Bacillus thuringiensis subspecies kurstaki (Btk) and subspecies berliner (Btb) both produce lepidopteran-specific larvicidal protoxins with different activities against the same insect species.
(8) Phyla as diverse as insects, birds, and mammals possess distinct HRAS and KRAS sequences, suggesting that these genes are essential to metazoa.
(9) Compounds identified as sex attractant pheromones in a number of phytophagous insects were found in a variety of host plants.
(10) casseliflavus from 43.5% of members of the 37 taxa of insects.
(11) This is the first demonstration of a 2-hydroxylated carotenoid in an insect.
(12) Among the most highly expressing transformed plants for each gene, the plants with the partially modified cryIA(b) gene had a 10-fold higher level of insect control protein and plants with the fully modified cryIA(b) had a 100-fold higher level of CryIA(b) protein compared with the wild-type gene.
(13) Expression of these two cDNAs in insect cells by recombinant baculovirus revealed that the alpha 1 subunit, after noncovalent association with the beta subunit, has the same potency as the native alpha subunit purified from the pituitary.
(14) We have examined the organization of the repeated and single copy DNA sequences in the genomes of two insects, the honeybee (Apis mellifera) and the housefly (Musca domestica).
(15) But pipeline opponents say that by moving beetles from the Nebraska sandhills and mowing miles of grass where the insects once lived, TransCanada has illegally begun construction on the project.
(16) The complete amino acid sequence of 147 residues was determined automatically for a major dimeric component (CTT VI) of the insect larva Chironomus thummi thummi (Diptera).
(17) Peptides B and C are isoforms of a 43-residue peptide which contains 6 cysteines and shows significant sequence homology to insect defensins, initially reported from dipteran insects.
(18) The results suggested that allergenic cross-reactivity between some fly species exists, and may extend to taxonomically unrelated insect species.
(19) The species studied were Triatoma infestans, Triatoma brasiliensis, Triatoma vitticeps, Triatoma pseudomaculata, Rhodnius prolixus and Panstrongylus megistus, and 34 to 348 insects were studied in each group (average, 190).
(20) There is evidence that they might predate on our native shrimps, on our insect larvae, possibly fish eggs.