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You searched for subject:(psyllids). Showing records 1 – 3 of 3 total matches.

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Technical University of Lisbon

1. Nunes, Pedro Mourato Catela. Honeydew producers in eucalypts and associated native fauna.

Degree: 2017, Technical University of Lisbon

Mestrado em Gestão e Conservação de Recursos Naturais - Instituto Superior de Agronomia - UL / Universidade de Évora

In recent years there has been an increase in the number of introduced eucalypt-feeding invasive species in worldwide plantations outside Australia. A large portion of these are honeydew producing sap-suckers, mostly psyllids (Hemiptera: Psylloidea). Besides the negative impact on eucalypt production, these non-native honeydew producers may have ecological effects on local native fauna by establishing new interactions. In this work, we intended to study these new interactions in eucalypt plantations in Portugal. We surveyed during a year three invasive psyllid species, Glycaspis brimblecombei, Ctenarytaina spatulata and Ctenarytaina eucalypti, in two sites with eucalyptus trees in Lisbon. The two sites differed on species composition and tree age. For each psyllid species, we estimated the population abundance and identified the associated fauna present in each survey date, covering the activity period of the psyllids. We also analyzed the sugar composition of honeydew and lerp produced by G. brimblecombei. With these results, we intended to further understand how sugar composition of these products may influence the associated fauna. The three psyllid species differed on their seasonal activity. The two Ctenarytaina species were observed from January to June, whereas G. brimblecombei concentrated its activity between May and September. Several commensal and predatory native species were found associated with the psyllids, as well as two exotic Australian parasitoid species. The number of specimens and species richness of both native commensals and predators was significantly higher for G. brimblecombei in comparison with the two other psyllid species. The main sugar present on G. brimblecombei honeydew and lerps was fructose. This work offers contributions for the eucalypt plantation management towards the psyllid species, for the study of the how invasive honeydew producing species affect the native fauna and finally serving as a guideline for future studies in the honeydew sugar compositions and its effect on the fauna attractiveness of the honeydew

N/A

Subjects/Keywords: eucalypts; psyllids; honeydew; biological invasion; native fauna

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Nunes, P. M. C. (2017). Honeydew producers in eucalypts and associated native fauna. (Thesis). Technical University of Lisbon. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/13884

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Nunes, Pedro Mourato Catela. “Honeydew producers in eucalypts and associated native fauna.” 2017. Thesis, Technical University of Lisbon. Accessed December 05, 2019. http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/13884.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Nunes, Pedro Mourato Catela. “Honeydew producers in eucalypts and associated native fauna.” 2017. Web. 05 Dec 2019.

Vancouver:

Nunes PMC. Honeydew producers in eucalypts and associated native fauna. [Internet] [Thesis]. Technical University of Lisbon; 2017. [cited 2019 Dec 05]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/13884.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nunes PMC. Honeydew producers in eucalypts and associated native fauna. [Thesis]. Technical University of Lisbon; 2017. Available from: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/13884

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Technical University of Lisbon

2. Marques, Ana Isabel Ambrósio. Pesquisa de fitoplasmas das pomóideas e prunóideas em Portugal.

Degree: 2011, Technical University of Lisbon

Mestrado em Engenharia Agronómica - Protecção das Plantas - Instituto Superior de Agronomia

Phytoplasmas are unicellular organisms, prokaryotes, cell wall-less that cause diseases in hundreds vegetable species. This study is mainly about the prospection of “Candidatus” phytoplasma pyri, “Candidatus” phytoplasma mali and “Candidatus” phytoplasma prunorum, etiologic agents of PD, AP e ESFY, vectored by psyllids Cacopsylla pyri, Cacopsylla picta e Cacopsylla pruni, respectively. These three phytoplasmas belong to AP or 16SrX group, considered quarantine organisms (A2 list, EPPO). In this study, two DNA extraction methods as well as two identification methods using PCR were compared. The two extraction methods differ in lyses buffer which seems to be crucial to obtain high quality DNA. The most used identification method until recently is nested-PCR but as it is a time consuming and expensive method, it’s being replaced by realtime PCR a quicker, more viable and less expensive one, as it was conf irmed in this study. Plant and insect samples from pome and prunus fruit trees in Oeste area were analysed. With major importance lies the fact that, for the first time, we report the presence of “Candidatus” phytoplasma pyri in insect and plant samples.

Advisors/Committee Members: Sousa, Esmeraldina Agostinho Nascimento, Mexia, António Maria Marques.

Subjects/Keywords: phytoplasmas; 16SrX group; psyllids; nested-PCR; real-time PCR; Candidatus; phytoplasma pyri

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Marques, A. I. A. (2011). Pesquisa de fitoplasmas das pomóideas e prunóideas em Portugal. (Thesis). Technical University of Lisbon. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/4117

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Marques, Ana Isabel Ambrósio. “Pesquisa de fitoplasmas das pomóideas e prunóideas em Portugal.” 2011. Thesis, Technical University of Lisbon. Accessed December 05, 2019. http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/4117.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Marques, Ana Isabel Ambrósio. “Pesquisa de fitoplasmas das pomóideas e prunóideas em Portugal.” 2011. Web. 05 Dec 2019.

Vancouver:

Marques AIA. Pesquisa de fitoplasmas das pomóideas e prunóideas em Portugal. [Internet] [Thesis]. Technical University of Lisbon; 2011. [cited 2019 Dec 05]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/4117.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Marques AIA. Pesquisa de fitoplasmas das pomóideas e prunóideas em Portugal. [Thesis]. Technical University of Lisbon; 2011. Available from: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/4117

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Poltronieri, Alex Sandro. Bases para o manejo da resistência de Diaphorina citri (Hemiptera: Liviidae) ao inseticida neonicotinoide imidacloprid em pomares de citros.

Degree: PhD, Entomologia, 2013, University of São Paulo

Um dos inseticidas mais utilizados para o controle do psilídeo Diaphorina citri (Hemiptera: Liviidae) em pomares de citros no Brasil tem sido o neonicotinoide imidacloprid. Para subsidiar um programa de Manejo da Resistência de D. citri a imidacloprid foram realizados estudos de monitoramento da suscetibilidade a inseticidas em populações de D. citri provenientes das principais regiões citrícolas do Estado de São Paulo, interações de imidacloprid com inseticidas e fungicidas, e avaliação da viabilidade de associação de imidacloprid com o parasitoide Tamarixia radiata (Hymenoptera: Eulophidae). Para a caracterização de linhas básicas de suscetibilidade de D. citri aos inseticidas imidacloprid, deltamethrin e dimethoate foram utilizados bioensaios de contato residual. Foram definidas as concentrações diagnósticas de 56 mg de imidacloprid/L água (CL95), 32 mg de deltamethrin/L água (CL90) e 56 mg de dimethoate/L água (CL95) para o monitoramento da suscetibilidade de 25 populações de D. citri entre 2010 e 1012. Não ocorreram diferenças na sobrevivência aos inseticidas testados em populações de psilídeos coletados em pomares de citros com diferentes intensidades de pulverização com inseticidas. A maior sobrevivência de insetos nas concentrações diagnósticas foi observada em 2010, com valores de sobrevivência variando de 4,7% a 24,0% para imidacloprid, de 0,9% a 11,8% para deltamethrin e de 5,2% a 13,0% para dimethoate. Não foram observados aumentos significativos na sobrevivência de D. citri nos monitoramentos realizados em 2011 e 2012. As interações de imidacloprid com deltamethrin ou dimethoate foram testadas com as CL25 dos respectivos inseticidas em bioensaio de contato residual. As interações foram aditivas sobre a mortalidade de adultos em condições de campo e de casa de vegetação. A mistura de imidacloprid com buprofezin e pyriproxyfen sobre ninfas de 3º instar também foi aditiva. A atividade biológica das concentrações campo de imidacloprid (40?L/mL) e buprofezin (375?g/mL) e da mistura dos mesmos mostrou uma degradação da atividade similar para o controle de D. citri em condições de campo e casa de vegetação. A avaliação da persistência da mistura de imidacloprid e pyriproxyfen (avaliado nas concentrações de 6,25?g/mL e 100?g/mL) indicou que pyriproxyfen teve degradação mais rápida que imidacloprid. A mistura de imidacloprid na CL25 para D. citri com a concentração de campo dos fungicidas Benzimidazol (500?g/mL de tiofanato-metilico), estrubilurina (37,5?g /mL de piraclostrobina) e triazol (50?g/mL de difenenoconazol) não afetaram o desempenho de imidacloprid. Houve significativa redução na taxa instantânea de crescimento (ri) de D. citri quando expostas a diferentes idades de resíduos de imidacloprid pulverizado na concentração de 40?g/mL, mesmo sobre resíduos com 56 dias de idade, levando à extinção da população ou em processo de extinção. A exposição a CL5 (0,501?g/mL), CL10 (0,804?g/mL), CL25 (1,995?g/mL) e CL50 (5,213?g/mL) de imidacloprid para D. citri reduziu o crescimento populacional de D. citri, mas não… Advisors/Committee Members: Omoto, Celso.

Subjects/Keywords: Citros; Citrus; Citrus psyllids; Insect resistance management; Insecticide mixture; Inseticidas; Instantaneous rate of increase; Manejo da resistência de insetos; Mistura de inseticidas; Psilídeo dos citros; Tamarixia radiata; Tamarixia radiata; Taxa instantânea de crescimento

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Poltronieri, A. S. (2013). Bases para o manejo da resistência de Diaphorina citri (Hemiptera: Liviidae) ao inseticida neonicotinoide imidacloprid em pomares de citros. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/11/11146/tde-16052013-162931/ ;

Chicago Manual of Style (16th Edition):

Poltronieri, Alex Sandro. “Bases para o manejo da resistência de Diaphorina citri (Hemiptera: Liviidae) ao inseticida neonicotinoide imidacloprid em pomares de citros.” 2013. Doctoral Dissertation, University of São Paulo. Accessed December 05, 2019. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-16052013-162931/ ;.

MLA Handbook (7th Edition):

Poltronieri, Alex Sandro. “Bases para o manejo da resistência de Diaphorina citri (Hemiptera: Liviidae) ao inseticida neonicotinoide imidacloprid em pomares de citros.” 2013. Web. 05 Dec 2019.

Vancouver:

Poltronieri AS. Bases para o manejo da resistência de Diaphorina citri (Hemiptera: Liviidae) ao inseticida neonicotinoide imidacloprid em pomares de citros. [Internet] [Doctoral dissertation]. University of São Paulo; 2013. [cited 2019 Dec 05]. Available from: http://www.teses.usp.br/teses/disponiveis/11/11146/tde-16052013-162931/ ;.

Council of Science Editors:

Poltronieri AS. Bases para o manejo da resistência de Diaphorina citri (Hemiptera: Liviidae) ao inseticida neonicotinoide imidacloprid em pomares de citros. [Doctoral Dissertation]. University of São Paulo; 2013. Available from: http://www.teses.usp.br/teses/disponiveis/11/11146/tde-16052013-162931/ ;

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