Pedro H. B. Togni

Pedro H. B. Togni
University of Brasília | UnB · Department of Ecology

Dr.

About

51
Publications
37,006
Reads
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384
Citations
Additional affiliations
November 2017 - present
University of Brasília
Position
  • Professor
Description
  • Professor of Applied Ecology / Insect Ecology
July 2014 - July 2015
University of Brasília
Position
  • Professor
March 2014 - March 2017
Instituto interamericano de Cooperación para la Agricultura
Position
  • Consultant
Description
  • Consultant to the Brazilian Ministry of Agriculture and Livestock for the registration of biological control agents in organic agriculture
Education
March 2010 - February 2014
March 2007 - March 2009
University of Brasília
Field of study
  • Ecology
January 2003 - December 2006

Publications

Publications (51)
Article
Full-text available
Management of the whitefly Bemisia tabaci biotype B (Hemiptera: Aleyrodidae) has challenged scientists and farmers worldwide because this insect is highly polyphagous and resistant to traditional control methods. Innovative management tools, such as the use of the ecosystem service of biological control, are necessary, especially in a century in wh...
Article
Insects are the most abundant and diverse organisms on Earth and provide essential ecosystem services. However, Brazilian society rarely consider the importance of insects in their diverse country. Therefore, in this review, we provide an overview of ecosystem services provided by insects in Brazil. A database search returned 136 articles, publishe...
Article
Multiple predator species can provide effective biological control of pest insects if predators have complementary effects. This could be the case of predatory ants in species-rich assemblages, such as in the tropics. However, predator assemblages are structured by variation in local and landscape factors. Different spatial scales can affect specie...
Article
Full-text available
Insectivorous bats provide ecosystem services in agricultural and urban landscapes by consuming arthropods that are considered pests. Bat species inhabiting cities are expected to consume insects associated with urban areas, such as mosquitoes, flying termites, moths, and beetles. We captured insectivorous bats in the Federal District of Brazil and...
Article
The interplay between natural, non-cropped, and cropped habitats affects insect movement in the landscape. Polyphagous, highly mobile pests are more likely to cross habitat-edges and colonize crops. However, local differences within habitats can affect pest populations and modulate their broad response to the landscape. We investigated how differen...
Article
Full-text available
We report the first formal record of the Indian meal moth Plodia interpunctella from a location within the Antarctic Treaty area, with the capture of a live adult male within the Brazilian Comandante Ferraz research station on King George Island, South Shetland Islands. This species is a well-known pest of stored products and is widely recorded in...
Article
Full-text available
In dung beetles, spatial and temporal segregation is determined by the niche and evolutionary history of the species and is mediated by competition. Different functional guilds of dung beetles use this segregation to reduce competitive pressure and optimize usage of ephemeral resources. We sought to understand the spatial (open and closed areas) an...
Article
The vereda (Brazilian savanna palm swamp) has a distinguishable flora and high floristic beta diversity. The factors that influence dissimilarities among vereda floras have not been clearly elucidated. Here we investigated how key physicochemical soil factors modulate the species composition of this vegetation. Soil and plants were sampled from thr...
Article
Full-text available
To attain sustainable agricultural crop protection, tools such as host plant resistance, enhanced ecosystem services (i.e. conserving natural enemies) and the deployment of companion plants should be promoted in pest management programmes. These agro system manipulations could be based on chemical ecology studies considering the interactions with n...
Article
Non-crop plant diversity plays a fundamental role in the conservation of predatory mite (PM) and can be proposed as a banker plant system (BPS). BPSs provide plants that host natural enemies in greenhouses or field crops and may improve the efficiency of biological control. The aim of this study was to investigate if a diverse plant composition cou...
Article
• Farmland habitats comprise an arrangement of cropped, uncropped and natural vegetation among the farms. Despite the differences in these habitats' features, generalist highly mobile predators are more likely to explore them in time and space. • We investigated the spatiotemporal dynamics of the species of Dolichopodidae (Diptera) in organic veget...
Article
Full-text available
Due to typesetting errors, Table 5 was not displayed correctly in the initial online publication. The original online article has been corrected.
Article
Environmental risk assessments (ERAs) are required before utilizing exotic arthropods for biological control (BC). Present ERAs focus on exposure analysis (host/prey range) and have resulted in approval of many specialist exotic biological control agents (BCA). In comparison to specialists, generalist arthropod BCAs (GABCAs) have been considered in...
Article
Environmental risk assessments (ERAs) are required before utilizing exotic arthropods for biological control (BC). Present ERAs focus on exposure analysis (host/prey range) and have resulted in approval of many specialist exotic biological control agents (BCA). In comparison to specialists, generalist arthropod BCAs (GABCAs) have been considered in...
Article
The Enemy Release Hypothesis (ERH) has been a factor influencing the establishment of some exotic species worldwide. We tested if the ERH could be influencing populations of the exotic predator Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) in Brazil. During two years, three local predatory coccinellid species and Harmonia axyridis were sam...
Article
Full-text available
The genus Cyclocephala Dejean (Coleoptera, Scarabaeidae, Dynastinae) contains approximately 350 species and is found mainly in the Neotropical region. These species function in the cycling of organic matter, act as bioindicators of environmental quality, and some species are considered agricultural pests. This study attempted to analyze the spatio-...
Chapter
Interactions of non-crop plants with natural enemies are continuous in space and time in the tropics. The advantages of using non-crop plants for habitat manipulation are that they are naturally present in agroecosystems, they grow rapidly and spontaneously, and farmers know them well. The presence of non-crop plants in or around fields affects the...
Article
Neem-based pesticides can be a valuable tool to control the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), in leafy minor crops that lack pest management options and often have pesticide level residues reported. We evaluated the efficacy of three commercially available neem-based products in controlling T. urticae populat...
Article
• Natural enemy conservation is known to be affected by ecological processes that range from local to landscape scales. At the farm scale, there are cropped and noncropped areas that differ in their management and plant diversity; these differences affect the spatiotemporal dynamics of natural enemies. • We investigated how different habitat types...
Article
Full-text available
A agrobiodiversidade tem potencial de fornecer serviços ecossistêmicos relevantes no processo produtivo, tais como ciclagem de nutrientes, regulação microclimática, aumento da fertilidade do solo, polinização e controle de pragas. A funcionalidade e a permanência de serviços ecossistêmicos, para o controle das pragas, podem ser alcançados pela asso...
Article
Full-text available
Brazil is one of the main users of chemical pesticides in the world. These products threaten human and environmental health, and many of them are prohibited in countries other than Brazil. This paradigm exists in contrast with worldwide efforts to make the need for food production compatible with biodiversity conservation, preservation of ecosystem...
Article
The whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) is a serious pest among the diverse insect fauna of the tomato crop, especially when cultivated in organic systems. The feeding behaviour of B. tabaci is responsible for direct damage to tomato plants and for the transmission of several viruses, such as begomoviruses. The objective of this study...
Conference Paper
Full-text available
Resumo O objetivo deste estudo foi comparar a mortalidade da fase imatura da mosca-branca entre os sistemas de cultivo orgânico e convencional de tomate em propriedades agrícolas no Distrito Federal. Foram estabelecidas coortes verticais em 20 plantas de cada propriedade e observado os fatores de mortalidade (predação, parasitoidismo, desalojamento...
Article
Full-text available
Current knowledge on coccinellids is primarily focused on their role as natural enemies of soft-bodied insects. However, there is a great diversity of coccinellid parasitoid species that are less studied. Here, we describe new records of coccinellid parasitoids with emphasis on new host-parasitoid interactions in 11 sample sites in Brazil. We colle...
Article
Full-text available
The integration of agroforestry plots with ephemeral crops such as vegetables on the farm scale can probably serve as a refuge and source of beneficial insects. Therefore, agroforestry systems possibly represent an alternative that favors ecosystem services and help growers in the transition process from conventional to agro-ecological agriculture....
Article
Full-text available
Insect predators are exposed to the Cry1Ac toxin in Bt cotton fields through several pathways. In this study, we investigated the effects of activated Cry1Ac added to a diet on Cycloneda sanguinea (L.) (Coleoptera: Coccinellidae), which is one of the main predators of non-target pests in Brazilian cotton. Direct bitrophic exposure of C. sanguinea t...
Article
Full-text available
Bt cotton plants expressing Cry1Ac protein have high specificity for the control of lepidopteran larvae. However, studies conducted in several countries have shown these plants have a differential impact on nontarget herbivores. The aim of this study was to compare the colonization rates and population abundance of the cotton aphid, Aphis gossypii...
Article
Full-text available
The multicolored Asian lady beetle, Harmonia axyridis (Pallas, 1773), was first recorded in Brazil in 2002 in Paraná state and subsequently observed in Santa Catarina, Rio Grande do Sul and Minas Gerais. This species can spread to new areas and become dominant in the local community, reducing the density and diversity of native species, mainly Cocc...
Article
Full-text available
The adoption of cultural practices such as companion plants and the kind of irrigation system can benefit the community of natural enemies in the agroecosystem due to the increase of more favorable microhabitats available and as a source of alternative resources, mainly in periods of low precipitation. This study evaluated how the tomato + coriande...
Article
Full-text available
The silverleaf whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), is one of the most important pest insects in tomato crop systems worldwide. It has been previously demonstrated that intercropping tomato [Solanum lycopersicum L. Mill. (Solanaceae)] with coriander [Coriandrum sativum L. (Apiaceae)] reduces the incidence and severity of d...
Article
Full-text available
RESUMO A adoção de práticas culturais como o consórcio de culturas e o tipo de irrigação podem bene-ficiar a comunidade de inimigos naturais no agroecossistema ao disponibilizar micro-habitas mais favoráveis e recursos alternativos, principalmente em períodos de baixa precipitação pluviométrica. O objetivo deste trabalho foi avaliar como o consórci...
Chapter
Full-text available
Ecossistemas naturais raramente estão sujeitos à ocorrência de popu-lações de herbívoros capazes de causar impactos negativos significativos na produção de biomassa e reprodução das plantas. Por outro lado, alterações ambientais produzidas pela transformação de ecossistemas naturais em áreas de cultivo afetam os recursos naturais disponíveis e os m...
Article
Full-text available
Due to its high genotypic plasticity, the control of the silverleaf whitefly Bemisia tabaci B biotype (Hemiptera: Aleyrodidae), is difficult. This insect may cause severe damage to the tomato crop as a vector of several viruses. The management of the production system and the consortium with other crops may have a direct effect on this herbivore po...
Article
Full-text available
Due to its high genotypic plasticity, the control of the silverleaf whitefly Bemisia tabaci B biotype (Hemiptera: Aleyrodidae), is difficult. This insect may cause severe damage to the tomato crop as a vector of several viruses. The management of the production system and the consortium with other crops may have a direct effect on this herbivore po...
Technical Report
Full-text available
O sistema convencional é caracterizado principalmente pela simplificação da paisagem em monoculturas, uso extensivo da terra e uso exagerado de fertilizantes e inseticidas químicos. Isso evidencia a necessidade de técnicas alternativas baseadas em princípios ecológicos em uma perspectiva de controle biológico conservativo, para o controle de inseto...
Article
Full-text available
Oobjetivo deste trabalho foi desenvolver um protocolo experimental para avaliar o impacto do algodoeiro Bt na bionomia e na escolha de plantas para colonização pelo pulgão-do-algodoeiro (Aphis gossypii). Abionomia do pulgão foi avaliada em casa de vegetação com insetos criados em gaiolas individuais com plantas de algodão Bt, da variedade DP404BG (...
Article
Full-text available
The objective of this work was to develop an experimental protocol to assess the impact of Btcotton on bionomics and on plant choice for Aphis gossypii colonization. The bionomics of the cotton aphid was assessed in greenhouse with insects reared in individual cages containing Btcotton plants of the variety DP404BG (Bollgard) or its nontransformed...
Article
Full-text available
Introdução As espécies interagem entre si de diversas formas e quando duas delas se mantêm associadas de modo que ambas são beneficiadas de alguma forma o tipo de interação que surge é denominado mutualismo (Ricklefs, 2001; Begon et al,, 2003). Dentre as categorias de mutualismo, o defensivo geralmente envolve espécies que recebem algum benefício e...
Article
Full-text available
Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Ecologia, Programa de Pós-Graduação em Ecologia, 2009. A mosca-branca Bemisia tabaci biótipo B é considerada uma das principais pragas do tomateiro por causar perdas de produtividade devido a danos diretos e pela transmissão de diversas viroses (Gemin...

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Projects

Projects (3)
Project
This project aims to understand how interactions among natural enemies, herbivores, and plants are affected by ecological factors at different spatial scales.
Project
Understand the role of agricultural landscapes (composition and configuration) in the infestation of whiteflies in tomato crops focusing on the spatial dynamics of whiteflies and associated viruses. The project proposes to understand the interactions between natural enemies, whitefly, viruses, and plants on different spatial scales.
Project
This proposal aims to assess whether the accidental introduction of the exotic generalist predator, Harmonia axyridis (Coleoptera: Coccinellidae), in Brazil impacts the diversity of local ladybirds and the ecosystem service of natural biological control of aphids in organic vegetables. We also aim to understand how habitat and farm diversity can allow the coexistence of H. axyridis with native coccinellids.