(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.
Orthoptera
Definition:
(n. pl.) An order of mandibulate insects including grasshoppers, locusts, cockroaches, etc. See Illust. under Insect.
Example Sentences:
(1) The major chromomere of pachytene chromosome 6 in the oocytes of Acheta (Orthoptera) is a region of amplification for ribosomal RNA cistrons (28 S and 18 S).
(2) The major chromomeres of pachytene chromosomes 6 and 11 in the oocytes of Acheta (Orthoptera) are regions of amplification for ribosomal RNA cistrons (28 S and 18 S).
(3) A survey of 10 closely related species of Orthoptera indicated that high levels of cyclic GMP in the accessory gland occur in the subfamily Gryllinae, to which A. domesticus belongs.
(4) Eleven animal species were tested in the orders Diptera, Hymenoptera, Lepidoptera, Orthoptera, Acari, and Rodentia, using microsomes in some species from both induced and noninduced animals or insecticide-resistant and susceptible strains.
(5) Cysticercoids of Staphylocystis furcata (Stieda, 1962), the adults of which parasitize the shrews (Soricidae), were found in the thoracic and abdominal cavities of orthopterous insects (Orthoptera, Acridioidea) belonging to five species: Chorthippus apricarius (L.), Chorthippus paralellus (Zett.
(6) The application of a combined HPLC-RIA methodology to estimate immunoreactive PGE2 levels in two insect species, namely, males of the cricket Gryllus bimaculatus (Orthoptera, Gryllidae) and males and females of Blattella germanica (Dictyoptera, Blattellidae) is reported.
(7) In addition to two species of Teleogryllus, three other species of Orthoptera and nine out of ten species of Lepidoptera tested were susceptible to the virus.
(8) The use of polyclonal antisera directed against three peptides (ovulation hormone (CDCH), alpha, and beta caudodorsal cell peptide (alpha- and beta-CDCP) produced by the caudodorsal cells of the snail Lymnaea stagnalis resulted in positive immunoreaction in Sarcophaga bullata (Diptera), Leptinotarsa decemlineata (Coleoptera), Locusta migratoria, and Periplaneta americana (Orthoptera).
(9) In oocytes of various species of crickets (Orthoptera: Gryllidae) the amplified DNA is contained in a large extrachromosomal DNA body.
(10) The skeletal muscle of members of Orthoptera and Diptera receives an innervation which is probably glutaminergic.
(11) The twitch duration of mesothoracic wing muscles of the male katydid Neoconocephalus robustus (Insecta; Orthoptera; Tettigoniidae) decreases rapidly within the first 5 days of adulthood, to about half of its value in newly molted adults.
(12) Its experimental life cycle achieved in Orthoptera Locusta migratoria allows the study of the three first larval stages.
(13) Orthoptera have been used previously for such studies.
(14) The genome of the African migratory locust, Locusta migratoria (Class Insecta, Order Orthoptera, Family Acrididae) contains an interspersed DNA sequence family, designated the Lm1 family.
(15) DNAs from three grasshopper species and three locust species (Family Acrididae, Order Orthoptera) have been characterised by a variety of biochemical techniques as part of a general investigation of their molecular evolution.
(16) We studied heterogeneity, amplification and size of Acheta domesticus (insects; Orthoptera) ribosomal DNA and characteristics of male and female somatic or germ line rDNAs by analysis of genomic clones from a conventional and a microclone library.
(17) In insects, immunostaining of only the A1 type of the protocerebral median neurosecretory cells was revealed in all species tested of Odonata, Dictyoptera, Isoptera and Orthoptera and in 2 species from the 9 other orders out of 13 orders tested.
(18) The protein exhibits a bipartite structure: glycine-rich region located in its NH2-terminal part and a carboxy-terminal domain sharing homologies with other cuticular proteins of Orthoptera, Diptera and Lepidoptera.
(19) A tryptophanyl-tRNA synthetase (TrpRS)-immunoreactivity is localized in various neurosecretory cells of all ganglia of the central nervous system of the Orthoptera Locusta migratoria, except in deutocerebrum, and in endocrine cells of the midgut.