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Showing 1 to 10 of 10 for “"Pea aphid"”.
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Laccase-1 in the pea aphid, Acyrthosiphon pisum (Harris)
… characterized in wood-rotting fungi where they appear to play a role in lignin degradation, morphogenesis, and stress defense. More recently, laccase-2 has been found to play a role in the insect cuticle sclerotization and tanning. In addition, it has been hypothesized that laccase-1 may be …
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Predation Risk and Colony Structure in the Pea Aphid, Acyrthosiphon Pisum
… identical (the "evolutionary self"). As aphids (small, herbivorous insects) are parthenogenetic, emit alarm signals, and have high levels of phenotypic plasticity to cope with environmental stressors like predation risk, they are a model organism for investigating the influence of …
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YIELD EFFECT AND VECTOR CAPACITY OF PEA APHID IN TRANSMITTING PEA SEEDBORNE MOSAIC VIRUS ON CHICKPEA AND FABA BEAN
Pea seed-borne mosaic virus (PSbMV) is an important potyvirus affecting pulse crops, yet its impact on chickpea and faba bean in Western Canada remains poorly characterized. This study examined PSbMV symptom expression, yield effects, and aphid-mediated transmission in chickpea (CDC Orkney) and …
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The Dynamics of Natural Enemy Resistance in Aphid Populations
Many aphids harbour facultative bacterial endosymbionts 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 …
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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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A comparison of the insecticidal properties of New Zealand native and other plants
… armyworm (TAW) (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 …
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Molecular characterisation of the bacterial communities in cabbage aphid (Brevicoryne brassicae) and their associated fitness effects
Aphids harbour symbiotic bacteria that can have positive, negative or neutral effects on their survival and performance. These bacteria are split into two groups: the primary obligate endosymbiont, Buchnera aphidicola, and the secondary ‘facultative’ bacteria. In pea aphid (Acyrthosiphon pisum) …
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Effect of several insects on the chemical composition of alfalfa, red clover, and birdsfoot trefoil
… and highest on birdsfoot trefoil, yellowing appeared on alfalfa and birdsfoot trefoil. On red clover there was a consistent increase in protein and nitrogen free extract and a reduction in crude fiber and ash content indicating slight reduction in growth. None of these differences were …
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Key role and diversity of EcR/USP and other nuclear receptors in selected Arthropoda species
… We 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 …
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Genotypic and endosymbiont-mediated variation in parasitoid susceptibility and other fitness traits of the potato aphid, <em>Macrosiphum euphorbiae</em>
<p>Almost all aphid species harbour the primary bacterial endosymbiont <br/> <em>Buchnera aphidicola</em>, which plays a vital role in essential nutrient provisioning. In the last two decades several additional ‘secondary’ bacterial endosymbionts have been detected across different aphid species, …