Schistocerca Gregaria
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Effects of formulation and volume application rate on the secondary pick-up of Metarhizium anisopliae conidia pathogenic to the desert locust Schistocerca gregaria (Orthoptera: Acrididae).
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Planaltina: Embrapa Cerrados. Publicado em: 2011
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2. Organization of the Hox gene cluster in the grasshopper, Schistocerca gregaria
The conserved organization of the Hox genes throughout the animal kingdom has become one of the major paradigms of evolutionary developmental biology. We have examined the organization of the Hox genes of the grasshopper, Schistocerca gregaria. We find that the grasshopper Hox cluster is over 700 kb long, and is not split into equivalents of the Antenna
The National Academy of Sciences of the USA.
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3. Identification of the gregarization-associated dark-pigmentotropin in locusts through an albino mutant
In response to crowding, locusts develop characteristic black patterns that are well discernible in the gregarious phase at outbreaks. We report here a dark-color-inducing neuropeptide (dark-pigmentotropin) from the corpora cardiaca of two plague locusts, Schistocerca gregaria and Locusta migratoria. The chromatographic isolation of this neuropeptide was mon
The National Academy of Sciences.
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4. Combined proton NMR imaging and spectral analysis of locust embryonic development
Images and spectra of desert locust [Schistocerca gregaria (Forskal)] embryos were collected in vivo using a 4.7-tesla proton (1H) NMR imaging spectrometer. The 100 × 100 × 500 μm image resolution and 125-nl localized spectral volumes were obtained within minutes of each other. The dynamics of embryonic development were slow enough that the time delay bet
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5. Coping with crowds: Density-dependent disease resistance in desert locusts
Parasite transmission generally exhibits some form of positive density dependence. Thus, as population density increases, so too does the per capita risk of becoming infected. Under such circumstances, natural selection should favor individuals that use cues associated with population density to determine the optimal allocation of resources to disease resist
National Academy of Sciences.
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6. Sequence and functional expression of a single alpha subunit of an insect nicotinic acetylcholine receptor.
We report the isolation and sequence of a cDNA clone that encodes a locust (Schistocerca gregaria) nervous system nicotinic acetylcholine receptor (AChR) subunit (alpha L1). The calculated molecular weight of the unglycosylated polypeptide, which contains in the proposed extracellular domain two adjacent cysteine residues which are characteristic of alpha (l
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7. Activation of nicotinic acetylcholine receptors on cultured Drosophila and other insect neurones.
1. Using whole-cell and single channel recordings, we have examined the properties of acetylcholine (ACh)-activated currents in neurones from larval and pupal Drosophila melanogaster (fruit fly), larval and embryonic Musca domestica (house fly), and nymphal Schistocerca gregaria (locust). 2. In all preparations, single channel recordings revealed two major c
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8. Mechanism of pHi regulation by locust neurones in isolated ganglia: a microelectrode study.
1. We have measured membrane potential (Em) and intracellular pH (pHi), and sodium and chloride activities (aNai and aCli) in exposed dorsal unpaired median neurones in isolated metathoracic ganglia from the desert locust, Schistocerca gregaria using eccentric double-barrelled ion-sensitive microelectrodes. 2. In the absence of added HCO3- the steady-state p