Acyrthosiphon Pisum
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Estudo morfofuncional do sistema digestivo da cigarrinha Bucephalogonia xanthophis (Hemiptera: Cicadellidae) / Morphofunctional study of the digestive system of the sharpshooter Bucephalogonia xanthophilis(Hemiptera: Cicadellidae)
Este trabalho aborda um estudo detalhado sobre o sistema digestivo da cigarrinha sugadora de xilema, Bucephalogonia xanthophis (Hemiptera: Cicadellidae), num enfoque morfofuncional. Sob o ponto de vista anatômico, o sistema digestivo é constituído, como na maioria dos insetos, por três regiões: o intestino anterior, o intestino médio e o intestino post
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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2. Influencia de fatores climaticos e do corte na flutuacao populacional de pulgoes (Homoptera: aphididae) na cultura da alfafa (Medicago stiva L.) em Lavras, MG.
Com o objetivo de determinar a influencia dos fatores climaticos (temperatura, precipitacao e umidade relativa) e do corte na flutuacao populacional de pulgoes na cultura da alfafa, foram realizadas coletas semanais em campo da cultivar Crioula, no periodo de marco de 1993 a fevereiro de 1994. Foram encontradas quatro especies de pulgoes, sendo elas Therioap
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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3. Diversidade de pulgoes e de seus parassitoides e predadores na cultura da alfafa.
O objetivo deste trabalho foi verificar a diversidade de pulgões, seus predadores e parasitóides, e a influencia de fatores climáticos nas suas populações. Foram realizadas coletas semanais no período de abril/1995 a março/1996, no campo de alfafa da Universidade Federal de Lavras (UFLA), em Lavras, MG. As espécies de pulgões coletadas foram Therioa
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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4. Diversidade de pulgões e de seus parasitóides e predadores na cultura da alfafa
O objetivo deste trabalho foi verificar a diversidade de pulgões, seus predadores e parasitóides, e a influência de fatores climáticos nas suas populações. Foram realizadas coletas semanais no período de abril/1995 a março/1996, no campo de alfafa da Universidade Federal de Lavras (UFLA), em Lavras, MG. As espécies de pulgões coletadas foram Therio
Pesquisa Agropecuária Brasileira. Publicado em: 2000-07
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5. Spiroplasma Symbiont of the Pea Aphid, Acyrthosiphon pisum (Insecta: Homoptera)
From a laboratory strain of the pea aphid, Acyrthosiphon pisum, we discovered a previously unknown facultative endosymbiotic bacterium. Molecular phylogenetic analysis based on 16S ribosomal DNA revealed that the bacterium is a member of the genus Spiroplasma. The Spiroplasma organism showed stable vertical transmission through successive generations of the
American Society for Microbiology.
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6. Diapause in the pea aphid (Acyrthosiphon pisum) is a slowing but not a cessation of development
BioMed Central.
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7. The Secondary Endosymbiotic Bacterium of the Pea Aphid Acyrthosiphon pisum (Insecta: Homoptera)
The secondary intracellular symbiotic bacterium (S-symbiont) of the pea aphid Acyrthosiphon pisum was investigated to determine its prevalence among strains, its phylogenetic position, its localization in the host insect, its ultrastructure, and the cytology of the endosymbiotic system. A total of 14 aphid strains were examined, and the S-symbiont was detect
American Society for Microbiology.
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8. Pea aphid symbiont relationships established by analysis of 16S rRNAs.
The pea aphid (Acyrthosiphon pisum Harris) harbors two morphologically distinct procaryotic intracellular symbionts. The genes for the 16S rRNA from these symbionts have been cloned and sequenced. Comparisons with sequences of 16S rRNAs from selected procaryotes indicate that the two symbionts are evolutionarily distinct from each other and are members of th
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9. Variation in resistance to parasitism in aphids is due to symbionts not host genotype
Natural enemies are important ecological and evolutionary forces, and heritable variation in resistance to enemies is a prerequisite for adaptive responses of populations. Such variation in resistance has been previously documented for pea aphids (Acyrthosiphon pisum) attacked by the parasitoid wasp Aphidius ervi. Although the variation was presumed to refle
National Academy of Sciences.
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10. Individual and population variation in invertebrates revealed by Inter-simple Sequence Repeats (ISSRs)
PCR-based molecular markers are well suited for questions requiring large scale surveys of plant and animal populations. Inter-simple Sequence Repeats or ISSRs are analyzed by a recently developed technique based on the amplification of the regions between inverse-oriented microsatellite loci with oligonucleotides anchored in microsatellites themselves. ISSR
University of Arizona Library.
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11. Diversity of Bacteria Associated with Natural Aphid Populations
The bacterial communities of aphids were investigated by terminal restriction fragment length polymorphism and denaturing gradient gel electrophoresis analysis of 16S rRNA gene fragments generated by PCR with general eubacterial primers. By both methods, the γ-proteobacterium Buchnera was detected in laboratory cultures of six parthenogenetic lines of the p
American Society for Microbiology.
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12. Prephenate Dehydratase from the Aphid Endosymbiont (Buchnera) Displays Changes in the Regulatory Domain That Suggest Its Desensitization to Inhibition by Phenylalanine
Buchnera aphidicola, the prokaryotic endosymbiont of aphids, complements dietary deficiencies with the synthesis and provision of several essential amino acids. We have cloned and sequenced a region of the genome of B. aphidicola isolated from Acyrthosiphon pisum which includes the two-domain aroQ/pheA gene. This gene encodes the bifunctional chorismate muta
American Society for Microbiology.