(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.
Tegula
Definition:
(n.) A small appendage situated above the base of the wings of Hymenoptera and attached to the mesonotum.
Example Sentences:
(1) Using two species of locusts, Romalia microptera Beavy and Podisma pedestris L., receptors of the wing apparatus are described: campaniform sensillas of the wing, hair receptors of the tegula, chordotonal organ and thorax stretch receptor.
(2) Plateau potentials were evoked in these interneurons by synaptic input from tegula or by the injection of depolarizing current pulses.
(3) This recovery is due to a functional substitution of the hindwing tegulae by the forewing tegulae (Büschges, Ramirez, and Pearson, 1992).
(4) To assess changes in the pathways from the forewing tegulae in the flight system, we investigated the pathways of the forewing tegula in intact locusts and in animals 2 weeks after hindwing tegula removal.
(5) The vitelline coat lysin of a top shell, Tegula pfeifferi, is a single polypeptide consisting of 118 amino acid residues and having a relative molecular mass of 13800.
(6) The present study demonstrates 1) that the timing of elevator motor neuron activity is determined by phasic afferent input from tegulae and stretch receptors and 2) that input from the stretch receptors controls the duration of elevator activity in the wingbeat cycle following the wing movement that was responsible for the generation of the receptor discharge.
(7) Removal of the forewing tegulae in recovered animals resulted in similar changes in the flight motor pattern as were observed in intact animals after the removal of the hindwing tegulae.
(8) The changes in connectivity of forewing tegula afferents are correlated with morphological alterations in the structure of the terminal processes of the afferents and with sprouting of some branches of interneurons receiving input from these afferents.
(9) Doses of 150 microliters at 10(-2) M phentolamine inactivated the wing stretch-receptors and tegulae without influencing the central nervous system (CNS).
(10) Here we report adaptive modifications in the flight system that occur after the removal of the hindwing tegulae.
(11) Previous investigations have shown that the flight motor pattern of the mature locust (Locusta migratoria L.) relies heavily on the input of the hindwing tegulae.
(12) By intracellularly recording from elevator motoneurons and administering phentolamine we confirmed a number of previous results related to the function of the wing stretch-receptors and the tegulae.
(13) The size of unitary excitatory postsynaptic potentials (EPSPs) evoked by signal forewing tegula afferents was found not to be altered in recovered animals.
(14) In contrast, removal of the forewing tegulae has little effect on the motor pattern.
(15) The following physiological alterations in these pathways were found to be associated with the recovery: (1) In the intact locusts, the connections of forewing tegula afferents to flight interneurons are variable but this variability did not occur in recovered animals, and (2) larger numbers of forewing tegula afferents connect to interneurons that excite elevator motoneurons (interneurons 566 and 567) and to an interneuron that inhibits depressor motoneurons (interneuron 511).
(16) In the locust, Locusta migratoria, the roles of two groups of wing sense organs, hind wing tegulae and wing-hinge stretch receptors, in the generation of the flight motor pattern were investigated.
(17) From these observations we conclude that recovery is due to the functional replacement of the removed hindwing tegulae by input from the forewing tegulae.
(18) Removal of the hindwing tegulae results in an immediate change in the motor pattern: the wingbeat frequency (WBF) decreases and the interval between the activity of depressor and elevator muscles (D-E interval) increases.
(19) In contrast to the situation in the intact animal, the activity of the forewing tegulae is necessary in recovered animals for the generation of the motor pattern.
(20) Over a period of about 2 weeks following hindwing tegula removal, the flight motor pattern progressively returned towards normal, and in about 80% of the animals recovery of the flight motor pattern was complete.