Mealybug
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Controle biolÃgico e alternativo da cochonilha (Phenacoccus manihoti Matile-Ferrero) na cultura da mandioca (Manihot esculenta Crantz) / Biological control and alternative mealybug (Phenacoccus manihoti Matile-Ferrero) in cassava crop (Manihot esculenta Crantz)
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 on the nymphs, using a spray nozzle a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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14. Host specificity and morphometric analyses of mealybugs of the Genus Planococcus (Hemiptera: Pseudococcidae) / ESPECIFICIDADE HOSPEDEIRA E ANÃLISES MORFOMÃTRICAS DE COCHONILHAS DO GÃNERO Planococcus (HEMIPTERA: PSEUDOCOCCIDAE)
Objetivou se com este trabalho determinar a especificidade de hospedeiros de cochonilhas do genero Planococcus por meio de estudos biologicos bem como o conhecimento da identidade das mesmas por meio de analises morfometricas Para os estudos morfologicos os especimes (femeas adultas) foram coletados em lavouras de cafeeiro em plantas de cacau e em vinhedos e
Publicado em: 2008
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15. Biologics aspects of Dysmicoccus texensis (Tinsley) (Hemiptera: Pseudococcidae) and their control with entompathogenic nematodes / Aspectos da biologia de Dysmicoccus texensis (Tinsley) (Hemiptera:Pseudococcidae) e seu controle com nematÃides entomopatogÃnicos
A cochonilha-da-raiz-do-cafeeiro Dysmicoccus texensis (Tinsley) (Hemiptera: Pseudococcidae) à uma praga de grande importÃncia para esta cultura. Os danos ocorrem nas raÃzes da planta onde, devido à constante sucÃÃo da seiva e à instalaÃÃo das colÃnias de insetos, sÃo formadas as criptas ou âpipocasâ, que impedem a absorÃÃo de Ãgua e nutriente
Publicado em: 2006
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16. Estimativa do nível de dano de Orthezia praelonga Douglas, 1891 e de Leucoptera coffeella (Guérin-Mèneville, 1842) por varíaveis fisiológicas vegetais. / Damage estimate of Orthezia praelonga Douglas, 1891 and Leucoptera coffeella (Guérin-Mèneville, 1842) by plant physiological variables.
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 praelon
Publicado em: 2005
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17. RELATIVE EFFECTS OF PLANT (Solenostemon scutellarioides) SIZE AND VARIEGATION ON THE SEARCHING EFFICIENCY AND LIFE HISTORY CHARACTERISTICS OF Cryptolaemus montrouzieri (COLEOPTERA: COCCINELLIDAE)
Attack rates, search strategy and search behavior were measured for third instar Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) attacking third instar citrus mealybug, Planococcus citri Risso (Homoptera: Pseudococcidae), on green and yellow-variegated Solenostemon scutellarioides (L.) Codd (= Coleus blumei L.) plants of different sizes. Select
Publicado em: 1998
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18. Sex-specific organisation of middle repetitive DNA sequences in the mealybug Planococcus lilacinus.
Differential organisation of homologous chromosomes is related to both sex determination and genomic imprinting in coccid insects, the mealybugs. We report here the identification of two middle repetitive sequences that are differentially organised between the two sexes and also within the same diploid nucleus. These two sequences form a part of the male-spe
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19. Sex pheromone of the pink hibiscus mealybug, Maconellicoccus hirsutus, contains an unusual cyclobutanoid monoterpene
Two compounds that together constitute the female sex pheromone of the pink hibiscus mealybug (PHM), Maconellicoccus hirsutus, were isolated, identified, and synthesized. They are (R)-2-isopropenyl-5-methyl-4-hexenyl (S)-2-methylbutanoate [common name is (R)-lavandulyl (S)-2-methylbutanoate] and [(R)-2,2-dimethyl-3-(1-methylethylidene)cyclobutyl]methyl (S)-2
National Academy of Sciences.
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20. Secondary (γ-Proteobacteria) Endosymbionts Infect the Primary (β-Proteobacteria) Endosymbionts of Mealybugs Multiple Times and Coevolve with Their Hosts
Mealybugs (Hemiptera, Coccoidea, Pseudococcidae) are plant sap-sucking insects that have within their body cavities specialized cells containing prokaryotic primary endosymbionts (P-endosymbionts). The P-endosymbionts have the unusual property of containing within their cytoplasm prokaryotic secondary endosymbionts (S-endosymbionts) [C. D. von Dohlen, S. Koh
American Society for Microbiology.
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21. Maternal Inheritance of Enzymes in the Mealybug PSEUDOCOCCUS OBSCURUS (Homoptera)
In the mealybug Pseudococcus obscurus Essig (Pseudococcidae) two esterases, a tyrosinase and a mannosephosphate isomerase, exhibited an unusual type of maternal inheritance. Electromorphs (alleles) were transmitted by both parents but segregation was delayed by one generation and full sisters always had the same phenotype. Moreover, for esterase-1, in which
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22. RNA Synthesis and Heterochromatization in Early Development of a Mealybug
Microinjection of specific radioisotope tracers showed that DNA and protein synthesis are triggered by fertilization but nuclear RNA synthesis does not occur until the cleavage nuclei migrate to the periphery. In the male, heterochromatization of the paternal chromosome set also occurs when the cleavage nuclei reach the periphery. These results help to expla
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23. The Genetic Properties of the Primary Endosymbionts of Mealybugs Differ from Those of Other Endosymbionts of Plant Sap-Sucking Insects
Mealybugs (Hemiptera, Coccoidea, Pseudococcidae), like aphids and psyllids, are plant sap-sucking insects that have an obligate association with prokaryotic endosymbionts that are acquired through vertical, maternal transmission. We sequenced two fragments of the genome of Tremblaya princeps, the endosymbiont of mealybugs, which is a member of the β subdivi
American Society for Microbiology.
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24. Acetic Acid Bacterial Biota of the Pink Sugar Cane Mealybug, Saccharococcus sacchari, and Its Environs
Saccharococcus sacchari is the primary colonizer of the developing “sterile” tissue between the leaf sheath and stem of sugar cane. The honeydew secreted by the mealybugs is acidic (about pH 3) and supports an atypical epiphytic microbiota dominated by acetobacter-like bacteria and acidophilic yeast species. However, Erwinia and Leuconostoc species predo