Mealybugs
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Host plants for mealybugs (Hemiptera: Pseudococcidae) in grapevine crops
RESUMO As cochonilhas-farinhentas (Hemiptera: Pseudococcidae) são consideradas pragas de importância econômica em cultivos de videira. São altamente polífagas, alimentando-se de plantas hospedeiras de 250 famílias. Objetivou-se identificar plantas hospedeiras de cochonilhas-farinhentas em cultivos de videira, na região do Vale do São Francisco. Foram
Pesqui. Agropecu. Trop.. Publicado em: 13/05/2019
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2. Biology of Blepyrus clavicornis (Compere) (Hymenoptera: Encyrtidae), a parasitoid of Pseudococcus viburni (Signoret) (Hemiptera: Pseudococcidae)
Abstract Encyrtids (Hymenoptera: Encyrtidae) are the most important and diverse group of natural enemies of mealybugs (Hemiptera: Pseudococcidae). Blepyrus clavicornis (Compere) is the most common parasitoid associated with Pseudococcus viburni (Signoret) in the Serra Gaúcha region, Brazil. We conducted laboratory studies to assess the development time, sex
Rev. Bras. entomol.. Publicado em: 2017-09
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3. A survey of mealybugs infesting South-Brazilian wine vineyards
ABSTRACTMealybugs (Hemiptera: Pseudococcidae) are important pests of the grapevine Vitis spp. and are responsible for direct and indirect damage to production. The main mealybug species present in wine grapevine (Vitis vinifera L.) in Southern Brazil were identified and their incidence evaluated. Bunch-samples (n = 50) from 131 vineyards located in the Serra
Rev. Bras. entomol.. Publicado em: 2015-09
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4. Population growth and within-plant distribution of the striped mealybug Ferrisia virgata (Cockerell) (Hemiptera, Pseudococcidae) on cotton
Population growth and within-plant distribution of the striped mealybug Ferrisia virgata (Cockerell) (Hemiptera, Pseudococcidae) on cotton. The striped mealybug, Ferrisia virgata (Cockerell) (Hemiptera, Pseudococcidae), is a widely distributed and polyphagous pest species, which naturally occurs on cotton plants in Brazil. This study evaluated the establishm
Rev. Bras. entomol.. Publicado em: 2014-03
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5. Bioecologia, disseminação e danos da cochonilha-das-raízes da mandioca Protortonia navesi Fonseca (Hemiptera: Margarodidae).
ABSTRACT: The cassava (Maninhot esculenta Crantz) it is an important source of energy, it has rusticity and high yield potential, and is the base food for more than 700 million people in the world. It is considered one of the most tolerant growing crop to the insects damages, however, is a host plant about 200 species of arthropods in the American continent.
Planaltina. Publicado em: 2011
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6. 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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7. Physiologic selectivity of insecticides used in coffee crop on the predators Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) and Cryptolaemus montrouzieri Mulsant, 1853 (Coleoptera: Coccinellidae) / SELETIVIDADE FISIOLÃGICA DE INSETICIDAS UTILIZADOS EM CAFEEIRO SOBRE OS PREDADORES Chrysoperla externa (HAGEN, 1861) (NEUROPTERA: CHRYSOPIDAE) E Cryptolaemus montrouzieri MULSANT, 1853 (COLEOPTERA: COCCINELLIDAE).
For the use of predators for pest control in the coffee crops in association with pesticides it is important that these compounds be selective to these natural enemies The physiologic selectivity of pesticides used in coffee crop on these predators Chrysoperla externa (Hagen 1861) (Neuroptera Chrysopidae) and Cryptolaemus montrouzieri Mulsant 1853 (Coleopter
Publicado em: 2008
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8. 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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9. 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
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10. 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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11. 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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12. 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