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Page 1 od 18 rezultati
Species-specific color-pattern modifications of butterfly wings.
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We have previously shown that the systemic injection of sodium tungstate, a general protein-tyrosine phosphatase (PTPase) inhibitor, efficiently produces characteristic color-pattern modifications on the wings of the Painted Lady butterfly, Vanessa cardui. By using this method in the present study,
Color-pattern modifications of butterfly wings induced by transfusion and oxyanions.
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The color-pattern determination of butterfly wings was studied, focusing on the cold-shock-induced color-pattern modifications of a species of butterfly, Vanessa (Cynthia) cardui (Lepidoptera: Nymphalidae). It was shown that the modification property could be transferred to the noncold-shocked
Nutrient composition of larval nectar secretions from three species of myrmecophilous butterflies.
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A comparative chemical analysis of the larval nectar secretions and hemolymph from three unspecifically and facultatively ant-attended lycaenid species (Polyommatus coridon, P. icarus, and Zizeeria knysna) was performed by using high-performance liquid chromatography techniques. Sucrose was the main
Dynamic FET PET Imaging of a "Butterfly" IDH-Wildtype Anaplastic Astrocytoma.
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A variety of neoplastic and nonneoplastic conditions involve the corpus callosum, which may result in a "butterfly" appearance on conventional MRI. Typically, that pattern shows a bilateral and heterogeneous contrast enhancement of the lesion, occasionally with central nonenhancing areas
Melanin-synthesis enzymes coregulate stage-specific larval cuticular markings in the swallowtail butterfly, Papilio xuthus.
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Like the adult wing, butterfly larvae are unique in their coloring. However, the molecular mechanisms underlying the formation of insect larval color patterns are largely unknown. The larva of the swallowtail butterfly Papilio xuthus changes its color pattern markedly during the 4th ecdysis. We
Tungstate-induced color-pattern modifications of butterfly wings are independent of stress response and ecdysteroid effect.
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Systemic injections of sodium tungstate, a protein-tyrosine phosphatase (PTPase) inhibitor, to pupae immediately after pupation have been shown to efficiently produce characteristic color-pattern modifications on the wings of many species of butterflies. Here we demonstrated that the
Perturbation of the wing color pattern of a swallowtail butterfly, Papilio xuthus, induced by acid carboxypeptidase.
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Hypodermal injection of Toughmac-E, a digestive mixture composed of nine digestive components, or Molsin induced perturbation of the wing color pattern in 0- to 2-day-old pupae of Papilio xuthus, but had no effect on prepupae or 3- to 4-day-old pupae. The effective component in Toughmac-E was
[From butterflies to neurobiology and the diagnosis of AIDS. The 100th anniversary of the discovery of pteridines].
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The first report on the isolation of pteridines from biological materials was published in 1889. During the last 100 years a large number of pteridines have been isolated from many different organisms and have been shown to be involved in several biochemical processes. The best characterized
Inhibition kinetics of cabbage butterfly (Pieris rapae L.) larvae phenoloxidase activity by 3-hydroxy-4-methoxybenzaldehyde thiosemicarbazone.
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Phenoloxidase (PO) is a key enzyme in insect development, responsible for catalyzing the hydroxylation of tyrosine into o-diphenols and the oxidation of o-diphenols into o-quinones. In the present study, the kinetic assay in air-saturated solutions and the kinetic behavior of PO from Pieris rapae
Color-pattern modifications and speciation in butterflies of the genus Vanessa and its related genera Cynthia and Bassaris.
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We have previously shown that the systemic injection of sodium tungstate, a protein-tyrosine phosphatase (PTPase) inhibitor, to pupae immediately after pupation efficiently produces characteristic color-pattern modifications on the wings of many species of butterflies including Vanessa indica and
Expression of one isoform of GTP cyclohydrolase I coincides with the larval black markings of the swallowtail butterfly, Papilio xuthus.
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The larva of the swallowtail butterfly Papilio xuthus changes its body markings during the fourth ecdysis. We found that stage-specific cuticular black markings are mainly regulated by co-localization of two melanin synthesis enzymes; tyrosine hydroxylase (TH) and dopa decarboxylase (DDC). TH
Insect pigmentation: activities of beta-alanyldopamine synthase in wing color patterns of wild-type and melanic mutant swallowtail butterfly Papilio glaucus.
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Color pattern formation was studied in wild-type and melanic swallowtails because of their unique pigment system, the papiliochromes, which are derived from the tyrosine as well as from the tryptophan pathway. In a comparative approach we used females of Papilio glaucus which occur in two
Regulation of 20-hydroxyecdysone on the larval pigmentation and the expression of melanin synthesis enzymes and yellow gene of the swallowtail butterfly, Papilio xuthus.
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The swallowtail butterfly, Papilio xuthus, changes its larval body pattern dramatically during the fourth ecdysis. Cuticular pigmentation occurs with precise timing just before ecdysis. We previously found that the cuticular pigmentation was regulated by three melanin synthesis genes, tyrosine
A baculovirus-encoded protein tyrosine phosphatase gene induces enhanced locomotory activity in a lepidopteran host.
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Enhanced locomotory activity (ELA), such as wandering, is a normal behavior that occurs at the end of the larval stage in lepidopteran (butterflies and moths) insects. Baculovirus infection can also induce ELA in lepidopteran larvae. The belief is that the virus induces this behavior to increase its
Molecular cloning of preproinsulin cDNAs from several osteoglossomorphs and a cyprinid.
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Several preproinsulin cDNAs were isolated and characterized from four members of the Osteoglossomorpha (an ancient teleost group); Osteoglossum bicirrhosum (arawana), Pantodon buchholzi (butterfly fish), Notopterus chitala (feather fin knife fish), Hiodon alosoides (goldeye) and Gnathonemus petersii
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