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Dissertations / Theses on the topic 'Maize weevils'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Morais, Alexandre Augusto de. "Epistasia na herança da resistência do milho ao gorgulho Sitophilus zeamais (Coleoptera: Curculionidae)." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11137/tde-18092012-103000/.

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Considerado um dos aspectos mais complexos da genética quantitativa, a epistasia tem sido ignorada pelos melhoristas nos estudos de herança dos caracteres, principalmente os da herança da resistência de plantas a insetos, que são de difícil obtenção. No milho, a principal praga de grãos é o Sitophilus zeamais (Coleoptera: Curculionidae), devido a sua capacidade de atacar grãos tanto no campo quanto em silos. Contudo, as estimativas dos componentes aditivo e de dominância envolvidos na herança dessa resistência podem estar viesadas pela presença do efeito da epistasia. Utilizando o delineamento

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2

Ribeiro, Leandro do Prado. "Biosprospecção de extratos vegetais e sua interação com protetores de grãos no controle de Sitophilus zeamais Mots. (Coleoptera: Curculionidae)." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-10022011-163406/.

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Objetivou-se, no presente estudo, avaliar a ação de extratos orgânicos e frações de plantas com atividade inseticida, bem como, a associação de extratos orgânicos brutos com terra de diatomácea no controle de Sitophilus zeamais Mots. (Coleoptera: Curculionidade), em milho armazenado. Os extratos foram obtidos por meio de maceração em solventes orgânicos (hexano, diclorometano e etanol), em ordem crescente de polaridade, das seguintes estruturas e espécies vegetais: ramos, folhas e sementes de Annona montana e de A. mucosa; ramos de Aristolochia cf. paulistana e folhas e ramos de Casearia sylve

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3

Serratos, H. J. Antonio. "Resistance of indigenous races of maize to infestation by maize weevil, Sitophilus zeamais Motsch." Thesis, University of Ottawa (Canada), 1987. http://hdl.handle.net/10393/5361.

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4

Araújo, Rúbia Aparecida de. "Molecular actions of pyrethroids on ion channels in the maize weevil, Sitophilus zeamais." Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/11604/.

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Previous studies on the mechanism of action of pyrethroids have confirmed that voltage-gated sodium channels (VGSC) in the axon membrane are the major target site of these compounds. The use of pyrethroids to control maize weevils, Sitophilus zeamais, a major pest of stored maize in Brazil, has led to the occurrence of resistance. The work described here seeks to establish whether changes in VGSC of S.zeamais can explain pyrethroid resistance. The S. zeamais homologue of the Drosophila para VGSC was identified using degenerate primers and sequenced. Resistance mutations were examined by sequen

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5

Ukeh, Donald A. "The identification and use of semiochemicals for the control of the maize weevil, Sitophilus zeamais (Motschulsky) in Nigeria." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25167.

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6

Howard, Christina S. "The Impact of the Strawberry Bud Weevil (Anthonomus signatus) on Raspberry (Rubus idaeus) in Maine." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/HowardCS2007.pdf.

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7

Tavares, Márcio Aurélio Garcia Correia. "Bioatividade da erva-de-santa-maria, Chenopodium ambrosioides L. (Chenopodiaceae), em relação a Sitophilus zeamais Mots., 1855 (Col.: Curculionidae)." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-11022003-143346/.

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Este trabalho foi realizado com o objetivo de avaliar a influência do pó e do extrato aquoso de C. ambrosioides sobre o gorgulho-do-milho, S. zeamais. As plantas de C. ambrosioides foram cultivadas na área experimental do Departamento de Entomologia, Fitopatologia e Zoologia Agrícola da ESALQ/USP. Foram obtidos pós de folhas, ramos, frutos e da planta inteira (com frutos), quando a planta apresentava-se no estágio de frutificação. Os insetos utilizados nos ensaios foram obtidos de criação mantida em grãos de trigo. Avaliou-se o efeito do pó das diferentes estruturas vegetais e da planta inteir

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8

Lahóz, André Capelari. "Eficiência agronômica do Etofenprox no controle de Sitophilus zeamais Motsch., 1855 (Coleoptera: Curculionidae) em grãos armazenados de milho e a relação entre o seu ataque e a variação de umidade e atividade de água dos grãos." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-26092008-092930/.

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O gorgulho do milho, Sitophilus zeamais (Motsch., 1855) é a principal praga no armazenamento de milho. Seu controle é feito com a aplicação de inseticidas curativos e ou preventivos, mas o método apresenta inconvenientes relacionados com fatores toxicológicos e de resistência da praga devido ao pequeno número de inseticidas registrados e estes pertencerem a grupos químicos antigos, como os organofosforados e piretróides. Com o objetivo de testar um grupo químico diferente e mais moderno no controle desta praga e analisar a variação de umidade e atividade de água dos grãos de milho no decorrer

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9

Souza, Felipe Hermínio Oliveira. "Efeitos abióticos na composição do óleo essencial de Lippia gracilis: influência na mortalidade e repelência de Sitophilus zeamais." Pós-Graduação em Agroecossistemas, 2013. https://ri.ufs.br/handle/riufs/6560.

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Abiotic factors may interfere in production of plant secondary metabolites and consequently influence the bioactivity of these compounds on insect pests. Thus, this study aimed to evaluate the influence of different agricultural practices (irrigation, mineral fertilizer and organic manure) in chemical composition of the essential oil (EO) of Lippia gracilis and its effects on the maize weevil Sitophilus zeamais.The chemical compositions of EO from plants of L. gracilis cultured on different treatments were analyzed using GC-MS and GC-FID. The carvacrol was the major component of EO in differen

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10

Simonetti, Ana Paula Morais Mourão. "Uso de crambe no controle de sitophilus zeamais mots. Em milho armazenado." Universidade Estadual do Oeste do Paraná, 2017. http://tede.unioeste.br/handle/tede/2961.

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Submitted by Neusa Fagundes (neusa.fagundes@unioeste.br) on 2017-08-30T18:44:32Z No. of bitstreams: 1 AnaPaula_Simonetti2016.pdf: 1680112 bytes, checksum: 8140e54ab237046b1634a3b33d12de36 (MD5)<br>Made available in DSpace on 2017-08-30T18:44:32Z (GMT). No. of bitstreams: 1 AnaPaula_Simonetti2016.pdf: 1680112 bytes, checksum: 8140e54ab237046b1634a3b33d12de36 (MD5) Previous issue date: 2017-02-07<br>Maize has been of great importance as a cereal for the whole Brazilian, but not all harvested grains are used immediately, so much of the production is stored. So, pests are among the factors t

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11

SANTOS, Izanielle Batista dos. "Eficácia inseticida da terra diatomácea e resposta comportamental de populações de Sitophilus zeamais Motsch.(Coleoptera, Curculionidae)." Universidade Federal Rural de Pernambuco, 2016. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6529.

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Submitted by Mario BC (mario@bc.ufrpe.br) on 2017-02-22T14:21:22Z No. of bitstreams: 1 Izanielle Batista dos Santos.pdf: 695252 bytes, checksum: 87a9486b9be20199fbb71b6da8e965e5 (MD5)<br>Made available in DSpace on 2017-02-22T14:21:22Z (GMT). No. of bitstreams: 1 Izanielle Batista dos Santos.pdf: 695252 bytes, checksum: 87a9486b9be20199fbb71b6da8e965e5 (MD5) Previous issue date: 2016-07-29<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Brazil is a country with enormous potential for the production of grain. However, the country faces serious problems in the control

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12

COITINHO, Rodrigo Leandro Braga de Castro. "Atividade inseticida de óleos essenciais sobre Sitophilus zeamais Mots. (Coleoptera : Curculionidae)." Universidade Federal Rural de Pernambuco, 2009. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6061.

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Submitted by (edna.saturno@ufrpe.br) on 2016-12-02T12:15:37Z No. of bitstreams: 1 Rodrigo Lenadro Braga Coitinho.pdf: 431687 bytes, checksum: 3510e17dbd6224b39b136428e9bf81c4 (MD5)<br>Made available in DSpace on 2016-12-02T12:15:37Z (GMT). No. of bitstreams: 1 Rodrigo Lenadro Braga Coitinho.pdf: 431687 bytes, checksum: 3510e17dbd6224b39b136428e9bf81c4 (MD5) Previous issue date: 2009-02-02<br>The essential oils are promising alternative for the management of Sitophilus zeamais in stored maize. In this investigation, toxicity, repellency and persistence of essential oils in stored maize were

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13

Gimenes, Leila. "Estudo fitoquímico de Annona sylvatica (Annonaceae). Avaliação das atividades inseticida e fungicida frente às formigas cortadeiras e seu fungo simbionte e ao gorgulho do milho." Universidade Federal de São Carlos, 2013. https://repositorio.ufscar.br/handle/ufscar/6570.

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Made available in DSpace on 2016-06-02T20:36:48Z (GMT). No. of bitstreams: 1 5580.pdf: 12897921 bytes, checksum: 7de4b9e632d7de714eb77bf5afad7e21 (MD5) Previous issue date: 2013-03-27<br>Universidade Federal de Sao Carlos<br>The leaf-cutting ants are social species, living in permanent colonies. The genera of the greater importance, Atta (saúvas) and Acromyrmex (quenquéns), are the major plagues of Brazilian agriculture, to cause serious damages by its large and uncontrolled grazing, which leads to serious economic losses for many agrosystems. In the same way, the corn maize weevil, Sitophil

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14

Oliveira, Alexandre Passos. "Nanoformulações à base de óleo essencial de Lippia sidoides e timol para o manejo de populações de Sitophilus zeamais." Universidade Federal de Sergipe, 2016. https://ri.ufs.br/handle/riufs/3030.

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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>Sitophilus zeamais is a global important pest-insect, known for the losses that it causes during production and grain storage. One of the main problems caused by synthetic pesticides use is the development of resistant insect populations. Essential oils of plants have been considered a promising alternative to the conventional management of pests insects, however, its direct application has limitations due to the instability of its composition and high volatility. According to this, the technology of nanoformula

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15

Beti, Jajuk Aneka. "The role of maize weevils (Sitophillus zeamais Motschulsky) in enhancing aflatoxin B1 content in stored corn." 1992. http://catalog.hathitrust.org/api/volumes/oclc/32357272.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1992.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 47-52).

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16

Chen, Ling-Chih, and 陳凌芝. "Effects of female''s age and changes in grain free fatty acid value on the fecundity of maize weevils, Sitophilus zeamais Motschulsky." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/40552832356364345418.

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碩士<br>國立臺灣大學<br>植物病蟲害學系<br>84<br>The data showed that the maize weevil female lived to the age of 118.8 days,with a preoviposition period of 6-15 days, ovipositing 0.04-2.9 eggs daily until she died, and deposited 231.7 eggs on average. The reproduction peak occurred at 21-40 day-old. More than 80% of the offspring produced by the female younger than 45 day-old completed the development in 24-29 days, whereas the de- -velopmental time of 60% offspring produced by the female older than 46 da

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17

Kasozi, Lwanga Charles. "Genetic analysis and selection for maize weevil resistance in maize." Thesis, 2013. http://hdl.handle.net/10413/10746.

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The maize weevil (Sitophilus zeamais Motschulsky) is one of the most destructive storage insect pest of maize (Zea mays L.) in tropical Africa and worldwide, especially when susceptible varieties are grown. Therefore, grain resistance against the maize weevil should be part of a major component of an integrated maize weevil management strategy. The specific objectives of this study were to: i) determine farmers’ perceptions about weevil resistance in maize cultivars; ii) determine the genotypic variation for maize weevil resistance in eastern and southern Africa maize germplasm lines; iii) stu

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18

Chang, Su-Hom, and 張素紅. "The growth and development of the maize weevil (Coleoptera: Curculionidae) on maize seeds." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/78170606738173065019.

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碩士<br>國立中興大學<br>昆蟲學系<br>81<br>The distributions of the eggs laid by the female maize weevil (Sitophilus zeamaiz Motschulsky) on each maize seed were variable. For one pair of the maize weevils in an ovi position period of 1- or 2-week, the eggs on the seed distributed randomly (Poisson distribution); in 3-week oviposition, the distributed aggregatively (negative binomial distribution). The eggs, laid by either five or ten pairs of the weevils in 1- to 3-week, also distributed aggregatively

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19

Walgenbach, Catherine Anway. "Aspects of the chemical and behavioral ecology of the maize weevil, Sitophilus zeamais." 1985. http://catalog.hathitrust.org/api/volumes/oclc/12705321.html.

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20

Hidayat, Purnama. "Morphometry, molecular markers, and phylogeography of the rice weevil, Sitophilus oryzae (Linnaeus) and the maize weevil, S. zeamais Motschulsky (Coleoptera: Curculionidae)." 1996. http://catalog.hathitrust.org/api/volumes/oclc/36958135.html.

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21

Gao, Nan. "Management of Indian meal moth and maize weevil in stored popcorn using approved grain protectants." Thesis, 2018. http://hdl.handle.net/2097/39304.

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Master of Science<br>Department of Grain Science and Industry<br>Subramanyam Bhadriraju<br>Spinosad, methoprene, deltamethrin, and deltamethrin plus methoprene, are approved in the United States for treating popcorn. The Indian meal moth, Plodia interpunctella (Hübner), and maize weevil, Sitophilus zeamais (Motschulsky) are two stored-product insects found in popcorn. The efficacy of spinosad and methoprene against P. interpunctella in popcorn were determined in laboratory and field studies. In the laboratory study, eggs (to represent first instars), third, and fifth instars of the laboratory

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