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Dissertations / Theses on the topic 'Phenacoccus'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Calatayud, Paul-André. "Etude des relations nutritionnelles de la cochenille du manioc avec sa plante hôte." Lyon, INSA, 1993. http://www.theses.fr/1993ISAL0039.

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Comme d'autres Homoptères, Phenacoccus manihoti est un insecte principalement phloémophage. L'utilisation, pour la première fois sur une cochenille, de l'électrographie de pénétration -EPG- a permis de révéler et de quantifier les interactions pré-phloémiennes entre les stylets de l'insecte et les tissus de la plante. Sur une gamme d'hôtes naturels (Manihot) et de substitution (Talinum, Poinsettia), un comportement de rejet précoce, dû aux délais et obstacles à atteindre le phloème, a été mis en évidence. Une analyse de certaines substances secondaires des liquides foliaires des hôtes a permis

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2

Oliveira, José Maria Sarreira Nunes. "Phenacoccus madeirensis Green: monitorização em cafeeiro e interação com o parasitóide Anagyrus amnestos." Master's thesis, ISA/UL, 2019. http://hdl.handle.net/10400.5/18354.

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Mestrado em Engenharia Agronómica - Instituto Superior de Agronomia / UL<br>O objetivo deste trabalho foi estudar a dinâmica de infestação de Phenacoccus madeirensis em cafeeiro, em estufa, e sua interação com o parasitoide Anagyrus amnestos. Procedeu-se à monitorização de cochonilhas-algodão, numa estufa do Centro de Investigação de Ferrugens do Cafeeiro, em Oeiras, entre setembro de 2016 e novembro de 2017. Foram colhidas amostras para determinação da taxa de parasitismo, por A. amnestos. A especificidade do parasitoide foi estudada, através de ensaios biológicos, sem escolha, em placa

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3

Guedes, Vanessa da Silva. "Aspectos biológicos de Phenacoccus solenopsis Tinsley (HEMIPTERA: PSEUDOCOCCIDAE) em algodoeiros com e sem caulim." Universidade Estadual da Paraíba, 2017. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2765.

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Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2017-03-20T12:23:05Z No. of bitstreams: 1 PDF - Vanessa da Silva Guedes.pdf: 12640326 bytes, checksum: 799248fdb9844a9994517fcd5c5aebe4 (MD5)<br>Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2017-03-22T15:19:41Z (GMT) No. of bitstreams: 1 PDF - Vanessa da Silva Guedes.pdf: 12640326 bytes, checksum: 799248fdb9844a9994517fcd5c5aebe4 (MD5)<br>Made available in DSpace on 2017-03-22T15:19:41Z (GMT). No. of bitstreams: 1 PDF - Vanessa da Silva Guedes.pdf: 12640326 bytes, checksum: 799248fdb9844a9994517fcd5c5aebe4 (MD

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4

Beltrà, Ivars Aleixandre. "Biology and management of the invasive mealybug Phenacoccus peruvianus (Hemiptera: Pseudococcidae) in urban landscapes." Doctoral thesis, Universitat Politècnica de València, 2014. http://hdl.handle.net/10251/37233.

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Phenacoccus peruvianus (Hemiptera: Pseudococcidae) is an invasive mealybug of Neotropical origin, first reported in the Mediterranean Basin in Almeria (Spain) in 1999. In the following years the mealybug spread into other Mediterranean regions and has also been recorded in Portugal and France, as well as in Sicily, Corsica and the Balearic Islands. Phenacoccus peruvianus is a polyphagous species and damages economically important ornamental plants. Since this was a relatively unknown species, during the first years of invasion, the mealybug was managed by the application of chemical treatments

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5

Andrade, Adilma Cristina Delgado. "Cochonilhas-algodão associadas ao cafeeiro em estufas." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8297.

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Mestrado em Engenharia Agronómica - Instituto Superior de Agronomia<br>The main objective of Centro de Investigação das Ferrugens do Cafeeiro, Instituto de Investigação Científica Tropical (CIFC/IICT) is to contribute for the development of coffee varieties resistant to coffee leaf rust, Hemileia vastatrix. Mealybugs are a major phytossanitary problem of coffee varieties maintained by CIFC/IICT, due to their interference with the production of young coffee leafs necessary for the inoculation of fungi. The aims of the present work were: a) to identify the mealybug species associated with commer

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6

Alliaume, Antoine. "Biologie de la vection de l'ampélovirus GLRaV-1 et du vitivirus GVA par la cochenille Phenacoccus aceris." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAJ004.

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L’enroulement de la vigne cause des pertes de rendement et de la qualité des vins au niveau mondial. Il est causé par quatre espèces de Grapevine leafroll-associated virus(GLRaVs) ; GLRaV-1, -2, -3, -4-like. Si le GLRaV-2 (genre Closterovirus) ne possède pas de vecteur connu, les trois autres espèces (genre Ampelovirus) sont transmises par cochenilles(Coccoidea) qui contribuent à leur dispersion dans et entre les vignobles. Les vignobles de la France septentrionale (Alsace, Bourgogne, Champagne) sont les plus impactés par l’enroulement viral. Ce travail a porté sur le rôle vecteur de Phenacocc

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7

Rheinheimer, Ana Raquel. "Controle biológico e alternativo da cochonilha (Phenacoccus manihoti Matile-Ferrero) na cultura da mandioca (Manihot esculenta Crantz)." Universidade Estadual do Oeste do Paraná, 2010. http://tede.unioeste.br:8080/tede/handle/tede/1433.

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Made available in DSpace on 2017-07-10T17:37:54Z (GMT). No. of bitstreams: 1 2010_Ana_Raquel_Rheinheimer.pdf: 1213170 bytes, checksum: 2c8ffff0e9ba711e13537d3c2ff93282 (MD5) Previous issue date: 2010-02-26<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This study aimed to evaluate the action of entomopathogenic fungi and plant protection products used in alternative agroecological on nymphs of P. manihoti in cassava. The four upper leaves of cassava plants infested with nymphs of the mealybug P. manihoti application of treatments received in the lower surface of leaves o

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8

TERTULIANO, MOUKARAM. "Resistance du manioc a la cochenille farineuses, phenacoccus manihoti (homoptera : pseudococcidae) : role de quelques composes biochimiques foliaires." Rennes 1, 1993. http://www.theses.fr/1993REN10074.

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Un criblage pratique au champ sur 25 varietes de manioc a permis d'identifier des cultivars presentant differents degres d'antibiose et d'antixenose. L'evaluation au laboratoire de la composante antibiotique sur 7 varietes de manioc, du faux-caoutchouc et de 2 plantes de substitution, talinum (talinum triangularae jacq) et poinsettia (euphorbia pulcherrima willd) montre que l'expression du potentiel biotique du ravageur est influencee par la plante-hote. L'infestation par la cochenille modifie peu la croissance de la plante traduisant la tolerance du manioc a p. Manihoti. Les modifications des

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9

Stäubli, Dreyer Bettina. "Biology and feeding behaviour of the coccinellid Hyperaspis notata in relation to its prey, the cassava mealybug, Phenacoccus manihoti /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10984.

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10

Gazola, Diego. "Práticas culturais e compostos secundários no manejo da cochonilha Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) em genótipos de mandioca." Universidade Estadual de Londrina. Centro de Ciências Agrárias. Programa de Pós-Graduação em Agronomia, 2017. http://www.bibliotecadigital.uel.br/document/?code=vtls000215239.

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O trabalho teve como objetivos gerais avaliar o efeito da poda, da adubação nitrogenada e os compostos químicos secundários presentes em genótipos de mandioca industrial no manejo da cochonilha Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae). O primeiro experimento teve como objetivo específico avaliar o efeito de diferentes formas de poda e de manejos da parte aérea da mandioca sobre a incidência da cochonilha P. manihoti no segundo ciclo da cultura e na produção e renda de raízes tuberosas. O experimento foi conduzido nos municípios de Nova Londrina e Diamante do Norte/PR, so

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11

Rheinheimer, Ana Raquel. "Resistência de variedades de mandioca à cochonilha Phenacoccus manihoti (Matile-Ferrero) e sua influência sobre o parasitoide Anagyrus lopezi (De Santis)." Universidade Estadual do Oeste do Paraná, 2013. http://tede.unioeste.br:8080/tede/handle/tede/1453.

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Made available in DSpace on 2017-07-10T17:40:47Z (GMT). No. of bitstreams: 1 2013_Tese_Ana_Raquel_Rheinheimer.pdf: 2579636 bytes, checksum: 74cb3c79adb634f93a9ec5ece00ae4d9 (MD5) Previous issue date: 2013-12-16<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Phenacoccus manihoti is an important pest of cassava in the region Center-South of Brazil, causing damage mainly cultivated during the second cycle. The use of resistant genotypes and biological control agents are the most promising techniques in the control of this pest. The objective of this research was to evaluate

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12

Reyd, Gilbert. "Activité prédatrice et bioécologique des coccinelles Hyperaspis raynevali et Exochomus flaviventris, associées a la cochenille du manioc Phenacoccus manihoti, au Congo." Paris 6, 1991. http://www.theses.fr/1991PA066306.

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Hyperaspis raynevali et Exochomus flaviventris sont deux coccinelles prédatrices de la cochenille du manioc Phenacoccus manihoti Matile-Ferrero (Hom. Pseudoccocinae). Différents aspects concernant l'activité prédatrice et la bioécologie de ces coccinelles sont abordées dans ce mémoire. Une étude de la prédation des larves d'H. Raynevali et d'E. Flaviventris sur les colonies de la cochenille du manioc a été conduite a l'échelle de parcelles paysannes. Un premier lâcher de larves de prédateurs au début de la gradation influence significativement l'évolution des effectifs moyens de P. Manihoti. U

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13

Kanika-Kiamfu, Justin. "Etude expérimentale des potentialités bioéthologiques d'Exochomus flaviventris Mader (Coléoptère - Coccinellidae) prédateur de la cochenille du manioc, Phenacoccus manihoti Mat. -Ferrero (Homoptère - Pseudococcidae)." Toulouse 3, 1991. http://www.theses.fr/1991TOU30230.

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E. Flaviventris est une espece coccidiphage capable de se nourrir d'aphides. Polyphage et sedentaire, elle adopte une strategie de reproduction du type r et peut developper dans les conditions optimales d'elevage, 7 a 8 generations par an. Elle presente l'avantage de consommer beaucoup de proies tous stades de developpement confondus. Malgre une capacite d'accroissement assez faible, un cycle de developpement et une maturation sexuelle relativement longs, une fecondite assez moyenne, une constante thermique et un seuil thermique theorique tres eleves, e. Flaviventris presente des qualites anta

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14

Le, Maguet Jean. "Epidémiologie de l'enroulement viral de la vigne dans les vignobles français septentrionaux et transmission par cochenilles vectrices." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00768382.

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Les virus de l'enroulement de la vigne (Grapevine leafroll-associated virus, GLRaV) sont répandus mondialement et transmis à la vigne uniquement par cochenilles (Coccoidea). En France, l'enroulement viral affecte particulièrement les vignobles des régions septentrionales.L'approche biologique de la vection a montré la capacité de Phenacoccus aceris à transmettre à la vigne les GLRaV-1, -3, -4, -5, -6, -9 et ceux du bois strié Grapevine virus A et B. Cette étude est la première démonstration de la transmission du GLRaV-6 et confirme l'absence de spécificité des cochenilles dans la transmission

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15

KIYINDOU, ANTOINE. "Biologie et pouvoir regulateur d'exochomus flaviventris mader, d'hyperaspis senegalensis hottentotta mulsant et de diomus hennesseyi fursch (col. Coccinellidae) : especes predatrices de la cochenille du manioc, phenacoccus manihoti (hom.: pseudococcidae) au congo." Rennes 1, 1993. http://www.theses.fr/1993REN10042.

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D'origine neotropicale, la cochenille du manioc phenacoccus manihoti a ete introduite accidentellement en afrique intertropicale vers les annees 70. Des predateurs locaux se sont adaptes a ce nouveau phytophage et on les observe presque dans toutes les parcelles de manioc. Malheureusement on ne sait rien de leur fonction de predation avant l'introduction de p. Manihoti. Comme on ne les avait pas etudies avant, on peut faire l'hypothese de predateurs se developpant habituellement aux depens des proies ayant des niveaux d'abondance et des variations d'amplitude numerique relativement faibles. Da

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16

SOUISSI, RACHID. "Interactions tritrophiques plantes- phytophage- parasitoide. Influence de la plante sur le comportement de recherche de l'hote et l'expression du potentiel biotique d'epidinocarsis lopezi (hymenoptera : encyrtidae), parasitoide de la cochenille phenacoccus manihoti (homoptera: pseudococcidae)." Rennes 1, 1997. http://www.theses.fr/1997REN10087.

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L'influence de la plante-hote de phenacoccus manihoti (hem. , pseudococcidae) sur le comportement de recherche de l'hote et l'expression du potentiel biotique du parasitoide epidinocarsis lopezi (hym. , encyrtidae) a ete etudiee en conditions experimentales de laboratoire. L'experimentation a porte sur quatre plantes caracterisees par differents niveaux de resistance antibiotique et antixenotique vis a vis de la cochenille: 2 varietes de manioc manihot esculenta (incoza et zanaga) ; le faux-caoutchouc (hybride de m. Esculenta et m. Glaziovii) et le talinum (talinum triangularae). L'influence d

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17

CHATZIDIMITRIOU, EVANGELIA. "Alien Invasive Species in Europe: Three Case Studies." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3427137.

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The incidental introduction of alien phytophagous insects and mites has become quite a common event in the world owing to intensive commercial exchanges of plants and goods and ever-increasing tourist traffic. There is evidence that this phenomenon is increasing, in spite of the control measures of the EU phytosanitary system in order to minimize unintentional introductions. The introduction of an alien species in a new ecosystem and the interaction between an alien species and the autochthonous species usually has many disadvantages. The alien species can dominate the invaded ecosystems and

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18

Chong, Juang-Horng. "Biology of the mealybug, Phenacoccus madeirensis, and its interaction with the host plant." 2001. http://purl.galileo.usg.edu/uga%5Fetd/chong%5Fjuang-horng%5F200108%5Fms.

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19

Yeh, Yu-Chin, and 葉郁菁. "Effects of temperature and host plant on the population parameters of the Madeira mealybug (Phenacoccus madeirensis Green)." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/57324329537810279677.

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碩士<br>國立臺灣大學<br>昆蟲學研究所<br>94<br>Phenacoccus madeirensis Green (Hemiptera: Pseudococcidae) is a newly invaded pest in Taiwan. Now it has been found in Yilan, Taipei, Taichung, Nantou, Changhua, Chiayi, Tainan and Pingtung. P. madeirensis has wide host range, including 57 species belonging to 19 families in Taiwan. Knowledge of the life cycle of P. madeirensis is essential to the success of its management program. The thesis investigated the effects of constant temperature (15, 20, 25, 28, 30, 32 and 35℃), with 70% RH and 12L: 12D photoperiod, on the development, survival, and reproduction of P.

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20

Chong, Juang-Horng. "Biology of the mealybug parasitoid, Anagyrus loecki, and its potential as a biological control agent of the Madeira mealybug, Phenacoccus madeirensis." 2005. http://purl.galileo.usg.edu/uga%5Fetd/chong%5Fjuang%5Fh%5F200505%5Fphd.

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