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Dissertations / Theses on the topic 'Mealybug'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kerns, David L. "Integrated Pest Management of Citrus Mealybug." College of Agriculture, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/198110.

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Foliar-applied insecticides and the soil-applied insecticide, Admire, were evaluated for their ability to control citrus mealybug on lemons while having a minimal impact on parasitoids. All of the foliar-applied insecticide exhibited activity towards citrus mealybug. The standard insecticide, Lorsban, performed very well, but since this product is especially harmful to parasitoids it is not considered to have a good fit in IPM programs where parasitoid conservation is emphasized. The currently labeled alternative, Applaud, was an effective treatment and should be considered for citrus m

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2

Epstein, Helen. "Chromosomal proteins from a mealybug, Planococcus citri." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386704.

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3

Tingle, Colin Charles Drummond. "Biological control of the glasshouse mealybug using parasitic Hymenoptera." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/8004.

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4

Horlock, Christine M. "Detection and elimination of mealybug wilt-associated viruses in pineapple /." St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17406.pdf.

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5

Johnson, Todd. "Biology of the oleander mealybug, Paracoccus burnerae (Brain) (Hemiptera: Pseudococcidae)." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5323.

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Thesis (MSc (Botany and Zoology))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT:Chapter 1 - Mealybugs are tiny, soft-bodied insects which constitute the second largest scale insect family Pseudococcidae (Downie & Gullan 2004). The family comprises approximately 2000 species in 300 genera (Ben-Dov 1994), of which 20 species are pests of cultivated plants in South Africa (Annecke & Moran 1982). In South Africa, approximately 109 species of mealybugs have been recorded from 50 genera (Millar 2002). Chapter 2 - The effect of constant temperatures on the development, survival and fecundi

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6

Holm, Kora. "Construction of a cDNA library for the vine mealybug, Planococcus ﬁcus (Signoret)". Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/4083.

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Thesis (MSc (Genetics))--Stellenbosch University, 2008.<br>The vine mealybug, Planococcus ficus (Signoret), is a severe pest of grapevine in many grape and wine producing countries around the world. It is renowned not only for the considerable damage it infers to grapevine of its own accord, but in particular for its role in transmitting deleterious viral diseases such as grapevine leafroll disease, Kober stem grooving, Shiraz disease and corky bark. Incidentally, it is an exceptionally tenacious antagonist of grapevine, being resistant to both chemical and biological control mechanisms.

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7

Holm, Kora. "Construction of a cDNA library for the vine mealybug, Planococcus ficus (Signoret) /." Link to the online version, 2008. http://hdl.handle.net/10019/1884.

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8

Moloinyane, Siphokazi. "Bioefficacy of selected entomopathogenic fungal endophytes (Ascomycota) against grapevine mealybug (Planococcus ficus)." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2858.

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Thesis (MTech (Horticulture))--Cape Peninsula University of Technology, 2018.<br>Global demand for environmentally-friendly grapevine cultivation and pest control has necessitated an improved understanding of the relationship between soil properties and beneficial naturally occurring antagonists like entomopathogenic fungi (EPF). This group of fungi presents a viable alternative for the control of destructive pests such as the grapevine mealybug. Sixty-six soil samples were collected from 22 vineyards in the Western Cape, South Africa. The association between soil nutrient status and EPF preva

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9

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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10

AMORIM, W. A. "DESENVOLVIMENTO DE UM MÉTODO PARA O DIAGNÓSTICO DO COMPLEXO DO PINEAPPLE MEALYBUG WILT-ASSOCIATED VIRUS." Universidade Federal do Espírito Santo, 2016. http://repositorio.ufes.br/handle/10/7148.

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Made available in DSpace on 2018-08-01T21:35:22Z (GMT). No. of bitstreams: 1 tese_8805_TESE WALKÍRIA.pdf: 5771036 bytes, checksum: 6f45c5743cc1f2e65059ae28ce2eee7c (MD5) Previous issue date: 2016-09-27<br>O Pineapple mealybug wilt-associated virus (PMWaV) em associação com a cochonilha Dysmicoccus brevipes tem sido reportado como a causa da murcha do abacaxizeiro. A disseminação do vírus ocorre principalmente através de material propagativo infectado e assintomático. Neste trabalho foi validada uma metodologia por PCR em tempo real, como estratégia, para o diagnóstico dos vírus: PMWaV-1

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11

FitzGerald, Véronique Chartier. "Screening of entomopathogenic fungi against citrus mealybug (Planococcus citri (Risso)) and citrus thrips (Scirtothrips aurantii (Faure))." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1020887.

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Mealybugs (Planococcus citri) and thrips (Scirtothrips aurantii) are common and extremely damaging citrus crop pests which have proven difficult to control via conventional methods, such as chemical pesticides and insect growth regulators. The objective of this study was to determine the efficacy of entomopathogenic fungi against these pests in laboratory bioassays. Isolates of Metarhizium anisopliae and Beauveria bassiana from citrus orchards in the Eastern Cape, South Africa were maintained on Sabouraud Dextrose 4% Agar supplemented with Dodine, chloramphenicol and rifampicin at 25°C. Infect

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12

Jackson, Alison. "The reproductive biology and behaviour of #Leptomastidea abnormis', a hymenopterous parasitoid of the citrus mealybug #Planococcus citri'." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306967.

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13

Van, Niekerk Sonnica. "The use of entomopathogenic nematodes to control citus mealybug, Planococcus citri (Hemiptera: Pseudococcidae) on citrus in South Africa." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20147.

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Thesis (MScAgric)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Planococcus citri (Risso) (Hemiptera: Pseudococcidae), the citrus mealybug, is a highly destructive pest of citrus in South Africa. The ability of mealybugs to develop resistance to chemicals, as well as their cryptic nature and protective wax coverings, all individually and combined, impair the ability of insecticides to control them. Furthermore, chemicals deplete natural enemy populations that usually establish control over mealybug populations well before harvest in March to May. The inability of chemicals to control P.

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Le, Vieux Patrique Dayne. "Entomopathogenic nematodes for the control of the vine mealybug (Planococcus ficus) in South African wine and table grapes." Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85640.

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Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae), the vine mealybug, is of economic importance to the wine and table grape (viticulture) industries, as it characteristically causes more damage than other mealybug species. Mealybug infestations contaminate grapes with their waxy secretions, egg-sacs and honeydew production, on which sooty mould grows, resulting in the fruit being unmarketable. Many export grapes are rejected, prior to shipment, as a result of infestations and phytosanitary concerns with regard to mealybug

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15

Vitullo, Justin Matthew. "Ecological and behavioral factors associated with monitoring and managing pink hibiscus mealybug (Hemiptera: Pseudococcidae) in the southern US." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28238.

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The pink hibiscus mealybug (PHM), Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae) was investigated with regard to damage caused to hibiscus by feeding, dispersal of nymphs, evaluation of management tactics, and the use of sex pheromone based monitoring in southern Florida from 2005 to 2008. Understanding the ability of PHM to locate and colonize new hosts, and the response of hosts is essential to optimized monitoring and management strategies. Investigation of the onset and severity of PHM feeding symptoms by Hibiscus rosa-sinensis L. showed that severity of symptoms differed am

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16

Kerns, David L., and Tony Tellez. "Commercial Evaluation of M-96-015 for Control of Citrus Mealybug, Woolly Whitefly and Citrus Thrips in Lemons." College of Agriculture, University of Arizona (Tucson, AZ), 1998. http://hdl.handle.net/10150/220526.

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M-96-015 did not appear to effectively control woolly whitefly but does appear to kill citrus mealybug. However, as with other insecticides coverage is a problem. The real benefit of M-96-015 towards citrus mealybug would occur if it prevented their spread. However, we were not able to measure this in this study. As with previous trials, M-96-015 is an effective citrus thrips material.

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17

Mgocheki, Nyembezi. "The relationship between ants (Hymenoptera: Formicidae), vine mealybug (Hemiptera: Pseudococcidae) and parasitoids in vineyards of the Western Cape Province, South Africa /." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/1531.

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18

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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19

Alfaro, Lemus Ana Lilia. "Factors influencing the control of citrophilous mealybug Pseudococcus calceolarie (Maskell) by Coccophagus gurneyi Compere in the Riverland of South Australia." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09IM/09iml562.pdf.

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Includes bibliographical references (leaves 102-114) The highly successful biological control of the citrophilous mealybug Pseudococcus calceolarie (Maskell) (CM) by the parasitic wasp Coccophagus gurneyi Compere in several countries led to the release of this parasitoid in the Riverland of South Australia as part of an integrated pest management program. However CM has not been successfully controlled in this region. The results of this study may help to explain the lack of effective biological control of CM in Riverland citrus.

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20

Karamaouna, Filitsa. "Biology of the parasitoids Leptomastix epona (Walker) and Pseudaphycus flavidulus (Brethes) and behavioural interactions with the host mealybug Pseudococcus viburni (Signoret)." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313812.

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21

Kotze, Maria Johanna. "Evaluating sex pheromone monitoring as a tool in the integrated management of vine mealybug, Planococcus ficus (signoret) (Homoptera: Pseudococcidae) / M.J. Kotze." Thesis, North-West University, 2006. http://hdl.handle.net/10394/1203.

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The vine mealybug, Planococcus ficus (Signoret) (Homoptera: Pseudococcidae) is a pest with significant economic impact on the grape growing industry in South Africa and other parts of the world. With the isolation and synthesizing of the vine mealybug sex pheromone in 2001, new control options for the integrated management of the vine mealybug have been created. The status of sex pheromone monitoring as a tool in the integrated management of the vine mealybug has been evaluated from different perspectives. A significant quantitative difference in male vine mealybug trap catch numbers has b

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22

Martínez, Blay Victoria. "Biology and management, by application of classical biological control, of the invasive mealybug Delotoccoccus aberiae (Hemiptera:Pseudococcidae) in citrus orchards in Spain." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/106363.

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Delottococcus aberiae (Hemiptera: Pseudococcidae) es un pseudocóccido invasor originario del África subsahariana que fue detectado causando graves daños en cítricos del este de España en el año 2009. Debido al desconocimiento existente sobre esta especie, la gestión de D. aberiae se ha llevado a cabo mediante el uso de tratamientos químicos autorizados contra este tipo de insectos. Sin embargo, la última Directiva Europea (2009/128/EC) sobre el uso sostenible de productos fitosanitarios estipula que la aplicación de plaguicidas en el ámbito agrícola debe reducirse, promoviendo estrategias de m

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LOPEZ, K. J. A. "DESENVOLVIMENTO de um Processo de Limpeza Clonal de Abacaxizeiro para Pineapple Mealybug Wilt Associated Virus (pmwav) Com o Uso da Hidrotermoterapia." Universidade Federal do Espírito Santo, 2018. http://repositorio.ufes.br/handle/10/7118.

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Made available in DSpace on 2018-08-01T21:35:03Z (GMT). No. of bitstreams: 1 tese_12059_Dissertação_Kellyn Joselyn Andino Lopes.pdf: 976231 bytes, checksum: 35864808b4f96c24afba8deef5f6aaab (MD5) Previous issue date: 2018-03-28<br>A murcha do abacaxizeiro é uma doença de elevada importância econômica que ocorre em todas as regiões produtoras de abacaxi no mundo. A doença é causada pela associação do complexo de vírus Pineapple mealybug wilt associated virus (PMWaV-1, PMWaV-2 e PMWaV-3) e a cochonilha Dysmicoccus brevipes. No Brasil, a doença tem sido associada à presença do PMWaV-2 e, os mét

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Chingandu, Nomatter, Koffie Kouakou, Romain Aka, et al. "The proposed new species, cacao red vein virus, and three previously recognized badnavirus species are associated with cacao swollen shoot disease." BIOMED CENTRAL LTD, 2017. http://hdl.handle.net/10150/626087.

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Background: Cacao swollen shoot virus (CSSV), Cacao swollen shoot CD virus (CSSCDV), and Cacao swollen shoot Togo A virus (CSSTAV) cause cacao swollen shoot disease (CSSD) in West Africa. During 2000-2003, leaf and shoot-swelling symptoms and rapid tree death were observed in cacao in Cote d'Ivoire and Ghana. Molecular tests showed positive infection in only similar to 50-60% of symptomatic trees, suggesting the possible emergence of an unknown badnavirus. Methods: The DNA virome was determined from symptomatic cacao samples using Illumina-Hi Seq, and sequence accuracy was verified by Sanger s

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Pandey, Raju Raj. "Mass production of Anagyrus ananatis Gahan (Hymenoptera: Encyrtidae) for the augmentative biological control of pink pineapple mealybug Dysmicoccus brevipes (Cockerell) (Homoptera: Pseudococcidae)." Thesis, University of Hawaii at Manoa, 2002. http://hdl.handle.net/10125/3033.

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Pink pineapple mealybug (PPM), Dysmicoccus brevipes (Cockerell) (Homoptera: Pseudococcidae), transmits Pineapple Mealybug Wilt Associated Virus (PMWaV) (Closteroviridae: Closterovirus) in Hawaiʻi. In the presence of PMWaV, feeding by PPM induces Mealybug Wilt of Pineapple, which can completely devastate a pineapple planting if PPM is not managed. Studies were conducted to develop an augmentative biological control program for PPM management using the encrytid endoparasitoid Anagyrus ananatis Gahan. Use of vermiculite in PPM rearing protocols effectively removed PPM generated honeydew that comm

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Walton, Vaughn M. (Vaughn Martin). "Development of an integrated pest management system for vine mealybug, Planococcus ficus (Signoret), in vineyards in the Western Cape Province, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53361.

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Dissertation (PhD)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: A survey was conducted in the Western Cape Province during the 1999/2000 and 2000/2001 seasons on mealybugs occurring in vineyards. P/anococcus ficus (Signoret) was the dominant mealybug in vineyards during this time. During this study P. ficus was recorded for the first time on roots of grapevines, which has far reaching implications for the control of this important vine leafroll virus vector as control actions were focused on above ground control. Other mealybugs presently recorded in local vineyards included

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Stokwe, Nomakholwa Faith. "Entomopathogenic nematodes : characterization of a new species, long–term storage and control of obscure mealybug, Pseudococcus viburni (Hemiptera: Pseudococcidae) under laboratory conditions." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2463.

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Thesis (MScAgric (Conservation Ecology and Entomology)--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: The obscure mealybug, Pseudococcus viburni (Signoret) (Pseudococcidae), is one of the common and serious pests of apples and pears in South Africa. The management of this pest in South Africa is dominated by the use of insecticides, while research into using natural enemies for biological control of mealybugs is still ongoing. Increasing concern over the environmental impact, pesticide residues in fruits, resistance, and expense associated with frequent use of insecticides make i

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Willmott, Amy Lynn. "Efficacy of systemic insecticides against the citrus mealybug, Planococcus citri, and pesticide mixtures against the western flower thrips, Frankliniella occidentalis, in protected environments." Thesis, Kansas State University, 2012. http://hdl.handle.net/2097/13683.

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Master of Science<br>Department of Entomology<br>Kun Yan Zhu<br>Raymond A. Cloyd<br>Protected environments, such as greenhouses and interior plantscapes provide optimal conditions for arthropod (insect and/or mite) pests to survive, develop, and reproduce. Two commonly encountered insect pests in protected environments include the citrus mealybug (CMB), Planococcus citri, and the western flower thrips (WFT), Frankliniella occidentalis. It is difficult to mitigate CMB and WFT populations due to the behavioral characteristics of the insects and few pesticides that are registered for use in prote

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Bertin, Aline. "Bioecologia de Dysmicoccus brevipes (Cockerell, 1893) e Pseudococcus viburni (Signoret, 1875) (Hemiptera: Pseudococcidade) em videira." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-07022012-093229/.

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As cochonilhas farinhentas (Hemiptera: Pseudococcidae) têm se tornado pragas importantes em diversas culturas. Na videira, são responsáveis por causar danos diretos, resultando em perdas na produção e danos indiretos como vetoras de vírus. Entretanto, poucas informações estão disponíveis sobre a biologia das espécies na cultura. Neste trabalho, foi estudado em laboratório, o efeito de diferentes estruturas vegetativas, cultivares e porta-enxertos de videira no desenvolvimento, sobrevivência e reprodução de Dysmicoccus brevipes (Cockerell, 1893) e Pseudococcus viburni (Signoret, 1875). As exigê

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Prestes, Tânia Mari Vicentini. "Parâmetros biológicos de Protortonia navesi (Hemíptera:Monophlebiidae) em diferentes variedades de mandioca (Manihot esculenta, Crantz)." Universidade Estadual do Oeste do Paraná, 2014. http://tede.unioeste.br:8080/tede/handle/tede/1450.

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Made available in DSpace on 2017-07-10T17:40:46Z (GMT). No. of bitstreams: 1 2014_Tese_Tania_Mari_Vicentini_Prestes.pdf: 1174076 bytes, checksum: e30f8e27973870065b82405ef0c155a9 (MD5) Previous issue date: 2014-08-27<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Cassava is cultivated in all regions of Brazil, being the South an important producer of starch, especially in Paraná, which holds 71% of the national amount. In this state, the cultivation is carried out in monoculture, in large areas and using broad-spectrum chemicals, leading in recent years, to an increase o

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Mudavanhu, Pride. "An investigation into the integrated pest management of the obscure mealybug, Pseudococcus viburni (Signoret) (Hemiptera: Pseudococcidae), in pome fruit orchards in the Western Cape Province, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2620.

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Thesis (MScConsEcol (Conservation Ecology and Entomology))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Pseudococcus viburni (Signoret) (Hemiptera: Pseudococcidae) (obscure mealybug), is a common and serious pest of apples and pears in South Africa. Consumer and regulatory pressure to produce commodities under sustainable and ecologically compatible conditions has rendered chemical control options increasingly limited. Information on the seasonal occurrence of pests is but one of the vital components of an effective and sustainable integrated pest management system needed for

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Chingandu, Nomatter, and Nomatter Chingandu. "Genomic Characterization of the Cacao Swollen Shoot Virus Complex and other Theobroma Cacao-Infecting Badnaviruses." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/621859.

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The cacao swollen shoot disease of Theobroma cacao L. (cacao) is caused by Cacao swollen shoot virus (CSSV; genus, Badnavirus, family, Caulimoviridae). The virus is endemic to West Africa, where it poses a serious threat to cocoa production. Despite efforts to control CSSV spread by replacement of infected trees with tolerant cultivars and mealybug vector management, the disease is widespread in West Africa. In Trinidad, leaf mosaic and vein-banding symptoms have been observed in cacao plants in the field since the 1940s, and recently at the International Cocoa Genebank (ICGT), a custodian of

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Colmenarez, Yelitza Coromoto [UNESP]. "Biologia de Paracoccus marginatus (Hemiptera: pseudococcidae) e de seu parasitóide Acerophagus papayae (Hymenoptera: encyrtidae ) em diferentes plantas hospedeiras e levantamento de inimigos naturais em Barbados." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/105416.

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Made available in DSpace on 2014-06-11T19:35:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-04-12Bitstream added on 2014-06-13T19:24:06Z : No. of bitstreams: 1 colmenarez_yc_dr_botfca.pdf: 347218 bytes, checksum: 747fc5e53cda509203cb294e255130cc (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Empresa Privada<br>Este estudo teve como objetivo estudar a biologia de Paracoccus marginatus Williams & Granara-de-Willink (Hemiptera: Coccoidea: Pseudococcidae) e de seu parasitóide Acerophagus

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Neves, Ademir Diniz. "Estimativa do nível de dano de Orthezia praelonga Douglas, 1891 e de Leucoptera coffeella (Guérin-Mèneville, 1842) por varíaveis fisiológicas vegetais." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-26042005-150817/.

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O objetivo do trabalho foi avaliar, por meio de variáveis fisiológicas vegetais como fotossíntese, condutância estomática, transpiração foliar, concentração interna de CO2 e temperatura foliar, o efeito de insetos pragas de diferentes hábitos alimentares em suas plantas hospedeiras. Foram estimados os níveis de dano de um sugador, Orthezia praelonga Douglas, 1891, em limão cravo (Citrus limonia L.), e de Leucoptera coffeella (Guérin-Mènevile, 1842), um mastigador, em mudas de café 'Obatã'. Os ensaios foram realizados em condições ótimas de temperatura, com luz e CO2 saturantes, e diferentes po

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Anga, Jean-Marc Abo. "The phylogeny and systematics of Anagyrini (Hymenoptera; Encyrtidae)." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338778.

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Colmenarez, Yelitza Coromoto 1974. "Biologia de Paracoccus marginatus (Hemiptera: pseudococcidae) e de seu parasitóide Acerophagus papayae (Hymenoptera: encyrtidae ) em diferentes plantas hospedeiras e levantamento de inimigos naturais em Barbados /." Botucatu : [s.n.], 2005. http://hdl.handle.net/11449/105416.

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Orientador: Carlos Frederico Wilcken<br>Banca: Wilson Badiali Crocomo<br>Banca: Arlindo Leal Boiça Junior<br>Banca: Luiz Alexandre Nogueira de Sá<br>Banca: Valmir Antonio Costa<br>Resumo: Este estudo teve como objetivo estudar a biologia de Paracoccus marginatus Williams & Granara-de-Willink (Hemiptera: Coccoidea: Pseudococcidae) e de seu parasitóide Acerophagus papayae Noyes & Shauff (Hymenoptera: Encyrtidae), verificando a influência dos diferentes hospedeiros no desenvolvimento da praga e do parasitóide, assim como realizar um levantamento dos inimigos naturais da praga em Barbados. No estu

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Saccaggi, Davina Luisa. "Development of molecular techniques to identify mealybugs (Hemiptera: Pseudococcidae) of importance on grapevine in South Africa." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-03272007-101612.

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Perera, Halamba Arachchige Sumanasiri. "Effect of host plant on mealybugs and their parasitoids." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/8646.

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Cudjoe, Anthony Richmond. "Biocontrol of cassava mealybugs in the rainforest zone of Ghana." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/47832.

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Sagarra, Laurent A. "Biology and behaviour of the parasitoid Anagyrus kamali Moursi (Hymenoptera:Encyrtidae)." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36055.

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The parasitoid Anagyrus kamali Moursi [Hymenoptera: Encyrtidae] has been recently introduced into the Caribbean as a biological control agent against the Hibiscus Mealybug (HMB), Maconellicoccus hirsutus Green [Homoptera: Pseudococcidae]. Information on this parasitoid is scarce and investigations of its biology and behaviour were conducted to optimize its mass-production, and improve our understanding of the A. kamali/M. hirsutus system. Host selection experiments showed that, of nine species tested, HMB was the only suitable mealybug species for A. kamali development. Third nymphal instar wa

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Adedipe, Folukemi Ebunoluwa. "Investigation of ecological behavior of two Coccinellidae beetle adults for biological control." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10491.

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Thesis (M.S.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains vii, 60 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

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BARBOSA, Paulo Roberto Ramos. "Desempenho de Tenuisvalvae notata (Mulsant) (Coleoptera: Coccinellidae) em diferentes presas e sua predação sobre Ferrisia virgata Cockerell (Hemiptera: Pseudococcidae)." Universidade Federal Rural de Pernambuco, 2012. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6012.

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Submitted by (edna.saturno@ufrpe.br) on 2016-11-28T16:17:54Z No. of bitstreams: 1 Paulo Roberto Ramos Barbosa.pdf: 763274 bytes, checksum: d1db37522ca460481761084d57a5e771 (MD5)<br>Made available in DSpace on 2016-11-28T16:17:54Z (GMT). No. of bitstreams: 1 Paulo Roberto Ramos Barbosa.pdf: 763274 bytes, checksum: d1db37522ca460481761084d57a5e771 (MD5) Previous issue date: 2012-07-02<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The lady beetles are an outstand predatory group among the natural enemies applied as biological control agents against arthropod pests.

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Hendricks, Harlan Judson. "Revision of the tribe Serrolecaniini Shinji (Pseudococcidae) with discussion on other "legless" mealybugs." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/29327.

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Of the estimated 1100 species of mealybugs, approximately 6% are described as possessing degenerative legs and antennae in the adult female developmental stage or having lost these structures altogether. Fifteen genera composing 63 species are often separated into their own taxonomic group based on these vestigial features (e.g., Sphaerococcinae), and are collectively known as the "legless" mealybugs. A comparative morphological analysis of adult females was undertaken to clarify the taxonomic placement of these species and to determine their relationships. Methods were included on collecting,

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Ceballo, Flor Angel Aquino. "An investigation into why coccidoxenoides peregrinus (timberlake) (hymenoptera:encyrtidae) is an effective biological control agent in Queensland citrus /." St. Lucia, Qld, 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16498.pdf.

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Morandi, Filho Wilson José. "Cochonilhas-farinhentas associadas à videira na Serra Gaúcha, bioecologia e controle de Planococcus citri (Risso, 1813) (Hemiptera: Pseudococcidae)." Pelotas, 2008. http://repositorio.ufsc.br/xmlui/handle/123456789/91230.

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De, Wet Owen. "Susceptibility of five strains of vine mealybugs, Planococcus ficus (Signoret), to chlorpyrifos." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/70289.

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Thesis (MScAgric)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: Colonies of Planococcus ficus (Signoret) were reared from three different areas, Hex River Valley, Robertson and Stellenbosch. An insectary colony and a table grape colony from Nietvoorbij experimental farm were also included in the study. A range of concentrations of chlorpyrifos was applied topically to individuals from the different colonies. The Stellenbosch population had the lowest LDso, although it was not significantly different from that of the insectary and Robertson colonies. The Hex River Valley and table

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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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Parkinson, Jasmine Frances. "The dynamics of biological Russian dolls : investigating the causes and consequences of variation in symbiont density in citrus mealybugs." Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/60565/.

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Endosymbiosis has been a major driver of evolutionary diversification of eukaryotes. However, symbiosis can create conflict between partners and symbiont density is often tightly regulated within hosts to ensure optimal functioning of the holobiont. The horticultural pest insects, citrus mealybugs, make an intriguing and potentially-powerful case study for endosymbiosis, harbouring two obligate, nutritional, vertically transmitted bacteria: Tremblaya princeps and Moranella endobia, in a nested mutualism. In this thesis, I examine the variation in the density of each of these obligate symbionts

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Jones, Taylor J. "Documentation of grapevine leafroll-associated viruses in wine grape varieties and native grape species in Virginia, and examination of the movement of grapevine leafroll disease to develop management strategies." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/49567.

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Grapevine leafroll-associated virus-2 (GLRaV-2), GLRaV-3, and grapevine fleck virus (GFkV) are widespread in grapes around the world. These viruses can cause significant crop loss and affect wine quality by reducing sugar accumulation and compromising skin color. Mealybugs are vectors of grapevine leafroll-associated viruses (GLRaVs). A statewide survey of commercial and wild grapevines in Virginia was conducted during 2009 through 2011. Also, vector management options were tested in two field studies. GLRaV-2, GLRaV-3, and GFkV were detected in 8%, 25%, and 1%, respectively, of over 1,200 vin

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Bugila, Abdalbaset Abusalah Ali. "Host-parasitoid relationships of Anagyrus sp. near pseudococci (Girault), (Hymenoptera, Encyrtidae), as a basis to improve biological control of pest mealybugs (Hemiptera, Pseudococcidae)." Doctoral thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/7341.

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Doutoramento em Engenharia Agronómica - Instituto Superior de Agronomia<br>The host-parasitoid relationships of Anagyrus sp. nr. pseudococci were investigated, including host selection behavior, host defenses, host suitability and parasitoid functional response in relation to five mealybug species with different phylogenetic relationships and geographical origins: i) a Mediterranean native species, Planococcus ficus, with a long co-evolutionary history with the parasitoid; ii) three alien species, Planococcus citri, Pseudococcus calceolariae and Pseudococcus viburni, with a more recent co

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