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Showing 1 to 16 of 16 for “"Acyrthosiphon"”.
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Laccase-1 in the pea aphid, Acyrthosiphon pisum (Harris)
… has been identified in the pea aphid, Acyrthosiphon pisum (Harris) using a combination of substrates that react with laccase. Within the pea aphid, laccase-1 transcript was found to be localized within the gut and the salivary glands. Finally, the specific regions where laccase-1 was …
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Predation Risk and Colony Structure in the Pea Aphid, Acyrthosiphon Pisum
<p>Many organisms live in transient or permanent aggregations to reduce individual predation risk. Hamilton's "Selfish Herd" theory states that an individual should assume a central position within a group to decrease individual predation risk relative to that of its neighbors (i.e., individuals …
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A partial characterization of Acyrthosiphon pisum (Harris) strains efficient and inefficient in the transmission of pea enation mosaic virus
Thesis (M.S.)--Michigan State University. Dept. of Entomology, 1967
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Electron microscopy of aphid-transmissible and nonaphid-transmissible variants of pea enation mosaic virus in pea aphid, Acyrthosiphon pisum (Harris), and garden pea, Pisum sativum L
Thesis (Ph. D.)--Michigan State University. Dept. of Entomology, 1974
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YIELD EFFECT AND VECTOR CAPACITY OF PEA APHID IN TRANSMITTING PEA SEEDBORNE MOSAIC VIRUS ON CHICKPEA AND FABA BEAN
… efficiency using viruliferous pea aphids (Acyrthosiphon pisum) at different densities. Chickpea showed high susceptibility to PSbMV. Infected plants exhibited pronounced mosaic, tip necrosis, severe stunting, and complete failure to produce pods. Plant height was reduced by approximately …
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Key role and diversity of EcR/USP and other nuclear receptors in selected Arthropoda species
… chose three species, the hemimetabolic pea aphid Acyrthosiphon pisum, the holometabolic buff-tailed bumblebee Bombus terrestris and the chelicerate two-spotted spidermite Tetranychus urticae as representatives of their respective clades. The main research questions that were addressed in the PhD …
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Alternativas de manejo de áfidos limitantes de la producción de alfalfa en el Sudoeste bonaerense
… Labill. y de Mentha x piperita L. en adultos de Acyrthosiphon pisum H., Aphis craccivora K. y Therioaphis trifolii M. (Hemiptera: Aphididae). En 23 cultivares de M. sativa se evaluaron la resistencia por antixenosis y por antibiosis y la tolerancia. Los cultivares ACA 605, Brava y CW 194 …
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Molecular characterisation of the bacterial communities in cabbage aphid (Brevicoryne brassicae) and their associated fitness effects
… secondary ‘facultative’ bacteria. In pea aphid (Acyrthosiphon pisum) three vertically transmitted secondary facultative bacteria have been shown to influence various fitness traits in their aphid hosts, including susceptibility to natural enemies. Very little is known however, about the fitness …
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Coevolution and consequences of symbioses between aphids and maternally transmitted bacteria
… maternally, at high efficiency, in a novel host, Acyrthosiphon pisum. However, not all efficiently transmitted symbionts would be expected to persist in populations of A. pisum, as some reduce aphid fitness. Finally, evidence obtained from my research and previous experimental and theoretical …
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The Dynamics of Natural Enemy Resistance in Aphid Populations
… that can influence aphid fitness. In Acyrthosiphon pisum (the pea aphid), the endosymbiont <i>Hamiltonella defensa</i> confers resistance to parasitism by parasitoid wasps due to the presence of the APSE bacteriophage in the <i>Hamiltonella</i> genome. Furthermore, pea aphids that …
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A comparison of the insecticidal properties of New Zealand native and other plants
… (Spodoptera litura F.) and the pea aphid (PA) (Acyrthosiphon pisum Harris). The LBAM is a serious pest of fruits and ornamental crops in Australia and New Zealand. The TAW is a tropical and subtropical pest. The pea aphid is a cosmopolitan pest of leguminous crops and also a virus vector. …
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Genotypic and endosymbiont-mediated variation in parasitoid susceptibility and other fitness traits of the potato aphid, <em>Macrosiphum euphorbiae</em>
… have been conducted using the pea aphid (<em>Acyrthosiphon pisum</em>), and it is not clear whether facultative bacteria confer the same fitness traits in other aphid species.<br/> The potato aphid, <em>Macrosiphum euphorbiae</em>, is closely related to <em>A. pisum</em> and is also an …
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Die Steuerung physiologischer Anpassungen von Blattläusen an veränderte ökologische Bedingungen durch endokrine Signale
… in vitro-Bioassay wurde für ein mutmaßliches Acyrthosiphon pisum-AKH die Aminosäure-Teilsequenz -NFST- erhalten. · Die Suche in den ersten bisher veröffentlichten Sequenzen des Genoms von A. pisum führte zu der Sequenz QVNFTPTWGQamid, die ein mutmaßliches adipokinetisches/ …
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Measuring juvenile hormone and ecdysteroid titers in insect haemolymph simultaneously by LC-MS: The basis for determining the effectiveness of plant-derived alkaloids as insect growth regulators
… Spodoptera frugiperda, Myrmicaria eumenoides and Acyrthosiphon pisum haemolymph. Method validation of the LC-MS method confirmed reproducibility and repeatability. The LODs for JHs and JH diols were between 6 to 12 pg, and 93 pg for ecdysteroids. 72 haemolymph samples can be processed per day by …
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Cistatinas de cebada: proteínas de defensa contra artrópodos
… Koch y dos pulgones, Myzus persicae (Sulzer) y Acyrthosiphon pisum (Harris). Las proteasas digestivas del ácaro y de los pulgones no se conocían de forma detallada, por lo que se ha realizado una caracterización enzimática de estas especies. En todas ellas se ha detectado la presencia de …