Weevils
Mostrando 13-24 de 30 artigos, teses e dissertações.
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13. Seleção de genótipos de feijoeiro Phaseolus vulgaris (L.) (Leguminosae) resistentes aos carunchos Acanthoscelides obtectus (Boh.) e Zabrotes subfasciatus (Say) (Coleoptera: Bruchidae) e o seu uso associado com inseticidas botânicos / Selection of common bean Phaseolus vulgaris (L.) (Leguminosae) resistant genotypes to the weevils Acanthoscelides obtectus (Boh.) and Zabrotes subfasciatus (Say) (Coleoptera: Bruchidae) and its association to botanical insecticides
Este estudo foi realizado com o objetivo de identificar genótipos de feijão Phaseolus vulgaris resistentes aos carunchos Acanthoscelides obtectus e Zabrotes subfasciatus, bem como avaliar o efeito associado desses genótipos resistentes com inseticidas de origem vegetal. Para tanto, foram utilizados acessos de P. vulgaris do Banco de Germoplasma do Institu
Publicado em: 2008
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14. Life history and larval morphology of Eurhinus magnificus Gyllenhal (Coleoptera: Curculionidae), a new weevil to the United States
Eurhinus magnificus Gyllenhal has been collected in south Florida, presumably introduced through trade with countries in its native range. Very little information has been published on the biology or taxonomy of this insect. We conducted studies to investigate various aspects of its life history and host plant associations. The pre-imaginal life stages of E.
Neotropical Entomology. Publicado em: 2007-06
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15. Phylogenetic Systematic of Tribu Neotropical Optatini Champion, 1907 (Coleoptera, Curculionidae, Baridinae). / SISTEMÁTICA FILOGENÉTICA DA TRIBO NEOTROPICAL OPTATINI CHAMPION, 1907 (COLEOPTERA, CURCULIONIDAE, BARIDINAE)
The tribu Optatini Champion, 1907 is composed of small to large-sized (2,3- 18,3 mm) weevils beetles, characterized by to have: rhomboidal or suboval body, covered with scales variegated, nearly everywhere of the body or forming points and spots; the mandibles toothed on the their inner edge; the prostern generally strongly grooved down the middle, and with
Publicado em: 2007
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16. Anthonomus grandis Boheman (Coleoptera: Curculionidae) en la zona central y sur oeste de misiones, Argentina: polen como fuente alimenticia y su relación con el estado fisiológico en insectos adultos
Host feeding plants of adult boll weevils (Anthonomus grandis Boheman) were determined within the period: January 1997 - December 1999. This took place through the identification of pollen grains, isolated from the digestive tracts of boll weevils captured in pheromone traps placed in a transect line which passes through the localities of Montecarlo, San Ign
Neotropical Entomology. Publicado em: 2002-03
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17. Plantas alimenticias alternativas del picudo del algodonero (Anthonomus grandis Boh.) (Coleoptera: Curculionidae) en la provincia de Formosa, Argentina: análisis palinológico del tracto digestivo
In the present paper, pollen analysis of boll weevil gut contents, sampled at four sites in Formosa Province, Argentine were carried out. Samples were taken from June of 1995 until May of 1997 at the localities of Laguna Blanca, Palma Sola, Naik Neek and Buena Vista. A total of 647 individuals were disected, and the digestive tract removed. From all the stud
Anais da Sociedade Entomológica do Brasil. Publicado em: 2000-06
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18. Efeito de produtos vegetais na qualidade fisiologica e sanitaria de sementes de labe-labe (Dolichos lablab L.) na armazenagem
The lablab bean (Dolichos lablab L.) is a useful annual or biennial fabacea of ample potencial use in agriculture as forage, hay, fodder, ensilage, green manure and even as human feed in certain countries. In the State of São Paulo (Brazil), cv. Rongai is the one most often found commercial/y. Its seeds, however, are frequently attacked by insects, special/
Publicado em: 1998
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19. Polygalacturonase from Sitophilus oryzae: Possible horizontal transfer of a pectinase gene from fungi to weevils
Endo-polygalacturonase, one of the group of enzymes known collectively as pectinases, is widely distributed in bacteria, plants and fungi. The enzyme has also been found in several weevil species and a few other insects, such as aphids, but not in Drosophila melanogaster, Anopheles gambiae, or Caenorhabditis elegans or, as far as is known, in any more primit
University of Arizona Library.
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20. Genetic Polymorphism and Evolution in Parthenogenetic Animals. I. Polyploid Curculionidae
The genetic variability at enzyme loci in different triploid and tetraploid parthenogenetic weevil populations has been elucidated by starch gel electrophoresis. The overall genotype of individual weevils belonging to different populations has been determined for over 25 loci. The results are compared with those obtained for diploid bisexual races of either
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21. Insect-Induced Conifer Defense. White Pine Weevil and Methyl Jasmonate Induce Traumatic Resinosis, de Novo Formed Volatile Emissions, and Accumulation of Terpenoid Synthase and Putative Octadecanoid Pathway Transcripts in Sitka Spruce1[w]
Stem-boring insects and methyl jasmonate (MeJA) are thought to induce similar complex chemical and anatomical defenses in conifers. To compare insect- and MeJA-induced terpenoid responses, we analyzed traumatic oleoresin mixtures, emissions of terpenoid volatiles, and expression of terpenoid synthase (TPS) genes in Sitka spruce (Picea sitchensis) following a
American Society of Plant Biologists.
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22. Type III secretion systems and the evolution of mutualistic endosymbiosis
The view that parasites can develop cooperative symbiotic relationships with their hosts is both appealing and widely held; however, there is no molecular genetic evidence of such a transition. Here we demonstrate that a mutualistic bacterial endosymbiont of grain weevils maintains and expresses inv/spa genes encoding a type III secretion system homologous t
National Academy of Sciences.
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23. A microfluorometric method for quantifying RNA and DNA in terrestrial insects
Evidence is accumulating for a mechanistic linkage between body phosphorus content and growth and reproduction of individual organisms, due in part to variation in allocation of resources to ribosomal RNA. Testing this connection requires reliable methods of quantifying the nucleic acid content of individual organisms. Although methods for quantifying nuclei
University of Arizona Library.
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24. Methyl Jasmonate Induces Traumatic Resin Ducts, Terpenoid Resin Biosynthesis, and Terpenoid Accumulation in Developing Xylem of Norway Spruce Stems1
Norway spruce (Picea abies L. Karst) produces an oleoresin characterized by a diverse array of terpenoids, monoterpenoids, sesquiterpenoids, and diterpene resin acids that can protect conifers against potential herbivores and pathogens. Oleoresin accumulates constitutively in resin ducts in the cortex and phloem (bark) of Norway spruce stems. De novo formati
American Society of Plant Physiologists.