(n.) Any jumping, orthopterous insect, of the families Acrididae and Locustidae. The species and genera are very numerous. The former family includes the Western grasshopper or locust (Caloptenus spretus), noted for the great extent of its ravages in the region beyond the Mississippi. In the Eastern United States the red-legged (Caloptenus femurrubrum and C. atlanis) are closely related species, but their ravages are less important. They are closely related to the migratory locusts of the Old World. See Locust.
(n.) In ordinary square or upright pianos of London make, the escapement lever or jack, so made that it can be taken out and replaced with the key; -- called also the hopper.
Example Sentences:
(1) For example, where 2 longitudinal tracts are pioneered independently in grasshopper, only one is formed in Drosophila.
(3) The silver staining technique was employed to locate Nucleolar Organiser Regions (NORs) in six species of grasshoppers viz.
(4) The morphological characteristics of five types of local spiking interneurons in the metathoracic ganglion of the acridid grasshopper Omocestus viridulus L. have been revealed by intracellular injection of the fluorescent dye Lucifer Yellow.
(5) In grasshoppers the auditory receptors develop by epithelial invagination of the body wall ectoderm in the first abdominal segment.
(6) We also show, by indirect immunofluorescence studies, that the 60-kDa protein is antigenically conserved in the germ cells of grasshopper, rooster, and frog and in plant meiocytes.
(7) The employment of certain DNA-specific fluorescent stains on unbanded and C-banded chromosomes of two species of grasshoppers shows remarkable differences among C-heterochromatic regions supposed to be similar in their base pair composition, according to their response to the standard fluorescence techniques.
(8) The Ti1 pioneer neurons arise at the distal tip of the metathoracic leg in the grasshopper embryo, and are the first neurons in the limb bud to extend axons to the central nervous system (C. M. Bate (1976) Nature (London) 260, 54-56; H. Keshishian (1980) Dev.
(9) Some 80-90 adult neurons constitute the dorsal unpaired median (DUM) group of the grasshopper metathoracic ganglion.
(10) The effects of four concentrations of colchicine (2.5 x 10(-7), x 10(-5), x 10(-3), and x 10(-2)M) on the cell cycle of grasshopper neuroblasts have been determined by direct observations on living cells.
(11) Gaulden reported a novel and unexpected mitomycin C (MMC) effect, namely a pronounced retardation of very late prophase and loss of chromosome orientation in neuroblasts of the grasshopper Chortophaga viridifasciate.
(12) Annulin, named for its annular expression in developing limb buds, is a approximately 100 kDa membrane-associated protein that is expressed in a complex and changing pattern during grasshopper embryogenesis.
(13) Finances can be insecure, she admits, and there is some concern about the government’s move to raise “free” childcare for three- and four-year-olds from 15 hours per week to 30 since Grasshoppers (like most private nurseries) makes a loss on the government-funded hours.
(14) The effect of implanted active corpora allata on the reproductive diapause in adult females of grasshopper, Tetrix undulata (Sow.)
(15) Creative solutions like co-production can be part of the picture to solve our childcare challenges, but can’t be a substitute for the major reforms to our childcare policy and funding needed to provide the volume of high-quality, affordable places that parents need.” In terms of the practicalities for working parents, Schofield adds that “most parents who choose childcare do work and may not be time-rich in this way.” Facebook Twitter Pinterest Bruce, who has worked at Grasshoppers for four years, puts his acting background to good use during storytelling time.
(16) A quantitative analysis of the alterations of constitutive heterochromatin in eukaryotic chromosomal evolution was attempted using the accumulated C-banding data available for mammals, amphibians, fish, ants, grasshoppers, and plants.
(17) Motor neurons of the main muscles of the hind legs and the hind wings of the grasshopper are distributed into eight anatomical groups within each half of a bilaterally symmetrical segmental ganglion.
(18) I cut through the spindle of demembranated grasshopper spermatocytes between the chromosomes and one pole and swept the polar region away, removing a portion of the would-be traction fiber.
(19) Additionally, the intersegmental (IS) nerve is pioneered by a different neuron in Drosophila (aCC) than in the grasshopper (U1) because the smaller Drosophila CNS places the IS nerve within filopodial reach of the aCC soma, while in the grasshopper it is not.
(20) Combined high-voltage electron-microscopic and electrophysiological studies strongly suggest that cilia play an active role in sensory transduction in the grasshopper proximal femoral chordotonal organ (FCO) a ciliated mechanoreceptor.
Locust
Definition:
(n.) Any one of numerous species of long-winged, migratory, orthopterous insects, of the family Acrididae, allied to the grasshoppers; esp., (Edipoda, / Pachytylus, migratoria, and Acridium perigrinum, of Southern Europe, Asia, and Africa. In the United States the related species with similar habits are usually called grasshoppers. See Grasshopper.
(n.) The locust tree. See Locust Tree (definition, note, and phrases).
Example Sentences:
(1) The octopamine, dopamine and noradrenaline content of the brain of the locust, Schistocerca gregaria has been determined using sensitive radiochemical-enzymatic assays.
(2) Fifty-two analogues of the wasp toxin, philanthotoxin-433, have been synthesized and tested on a glutamatergic, nerve-muscle preparation from locust leg.
(3) Using a deafferented flight preparation of the locust and glass microelectrodes, we recorded simultaneously from the neuropil segments of different interneurons within a single thoracic ganglion.
(4) Activation of phosphorylase during flight is strongly reduced when locusts are ligated at the neck, indicating that this activation is due to a factor from the head, which upon flight is released into the hemolymph.
(5) However, we also demonstrate that published data show the existence of strong nonlinearities in the single-photon responses of toad and perhaps also of locust.
(6) The embryonic development of the specialized glial cells that form the perineurial blood-brain barrier in the locust CNS has been studied by freeze-fracture and tracer uptake.
(7) In terrestrial insects such as locusts and cockroaches ventilatory movements are governed by a dominant oscillator in the metathoracic or anterior abdominal ganglion.
(8) Intracellular and extracellular electrodes were used to study spontaneous and impulse-linked release of transmitter at locust retractor unguis nerve-muscle synapses.2.
(9) Two mosaic sibling embryos of the Australian plague locust, Chortoicetes terminifera are reported with haploid and diploid cell lines in widely differing proportions.
(10) Locust phospholipids contain myoinositol but no scylloinositol.
(11) The anti-G beta, gamma antibodies recognized a 35-36-kDa protein in brain of vertebrates such as mammals (rat), avians (pigeon), amphibians (frog), fish (trout), and reptiles (turtle) but not in the invertebrates such as molluscs (snail) and insects (locust).
(12) The bioactivity of the endogenous FMRFamide-like peptides has been assessed on the extensor tibiae neuromuscular preparation and on the locust heart.
(13) It is proposed that serially homologous motor neurons serving similar functions are, to a first approximation, similar in the locust.
(14) Indeed, diglycerides constitute the largest neutral lipid fraction in the hemolymph of silkmoths, locusts, cockroaches, bugs, etc.
(15) The morphology and organisation of the central projections of tactile hair afferents from the hind leg of the locust, Schistocerca gregaria, were examined by staining individual hair afferents.
(16) The third experiment revealed that LiCl injections did not influence either maternal aggression or locust killing in naive females and predatory aggression in experienced-killer females.
(17) If harm is to be expected, then a quantitative comparison of that with the undoubted benefits of locust control is required to enable one to make a value judgement.
(18) This implies that the locust's computation of target distance involves signals concerning its own head motion.
(19) Allatal diol formation may be an additional mechanism for the control of JH-III levels in locusts, preceding release into the hemolymph.
(20) In the prey-catching task animals failed to target or track locusts when they were in the field contralateral to the lesion throughout the 4-day testing period.