18 research outputs found

    Record of Carineta Amyot and Audinet-Serville, 1843 (Hemiptera: Cicadidae: Cicadettinae: Carinetini) in Goiás State, Brazil

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    Cicadas (Hemiptera: Cicadidae) are insects characterized mainly by the sound they emit, which makes their presence evident in natural and urban areas. Beyond this, we know little about the species that occur in the neotropical region, including Brazil. This is the first report of species of Carineta in Goiás State, Brazil. The collections were made with light traps in two close localities in the core area of the Cerrado biome. We sampled the species Carineta durantoni Boulard, 1986, C. gemella Boulard, 1986, C. rufescens (Fabricius, 1803) and C. spoliata (Walker, 1858). Images of these species and their current distribution are presented here

    A Case Study of Wavelets and SVM Application in Coffee Agriculture: Detecting Cicadas Based on Their Acoustic and Image Patterns

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    One of the main problems in agriculture is crop pest management, which causes financial damage to farmers. This management is traditionally performed with pesticides; however, with a large area of application, it would be more economically viable and more environmentally recommended to know precisely the regions where there is concrete infestation. In coffee farms, cicada makes a distinctive sound when it hatches after years of underground nymph-shaped living. One possibility of contributing to its management would be the development of a device capable of capturing the sound of the adult cicada in order to detect its presence and to quantify crop insects. This device would be spread across the coffee plots to capture sounds within the widest possible area coverage. With monitoring and quantification data, the manager would have more input for decision-making and could adopt the most appropriate management technique based on concrete information on population density separated by crop region. Thus, this chapter presents an algorithm based on wavelets and support vector machines (SVMs), to detect acoustic patterns in plantations, advising on the presence of cicadas

    Briófitas de área de Cerrado da região Centro-Oeste do Brasil

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    The Cerrado is a savanna formation predominantly located in the central Brazilian plateau; this vegetation is rich in bryophytes. This study analyzes bryophyte diversity, composition and distribution among various Cerrado vegetation types (Gallery Forest, Deciduous Forest, Rupestrian Cerrado and Rupestrian Fields) and substrates in the Área de Proteção Ambiental Morro do Macaco, from municipality of Iporá, Goiás state, in Central-West Brazil. The collection was performed in four plots of 20m x 20m, in each vegetation types, from August to December 2010, the data were analyzed with the Shannon-Wiener (H’) and Simpson diversity index and the floristic similarity with UPGMA. We found 37 species, with 28 to Bryophyta and nine to Marchantiophyta. Trichostomum brachydontium Bruch is a new record to the Brazilian Midwest and an endemic species (Archidium oblongifolium Peralta et al.) occurs in the study area. The forested areas were the richest in species number and the substrate most colonized was soil. The results extend the information about the Cerrado bryophytes, increasing the knowledge of their taxonomic diversity and ecology.Keywords: mosses, liverworts, community ecology, Brazilian savanna.O Cerrado é uma formação savânica localizada no platô Central do Brazil, apresentando vegetação rica em briófitas. Este trabalho analisou a diversidade de briófitas através da composição e distribuição de briófitas entre as fitofisionomias de Cerrado (Mata Seca, Mata de Galeria, Cerrado Rupestre e Campo Rupestre) e a colonização de substratos na Área de Proteção Ambiental Morro do Macaco, no município de Iporá, no Estado de Goiás, na região Central do Brasil. As coletas ocorreram no interior de quatro parcelas de 20m x 20m demarcadas em cada formação vegetal nos meses de agosto a dezembro de 2010. Foram analisados os índices de Shannon-Wiener (H’) e Simpson e a similaridade entre as fitofisionomias através da técnica UPGMA. Foram encontradas 37 espécies, 28 da divisão Bryophyta e nove de Marchantiophyta. Trichostomum brachydontium Bruch é registrada pela primeira vez para o Centro-Oeste brasileiro e uma espécie endêmica, Archidium oblongifolium Peralta et al., ocorre na área estudada. As áreas florestadas apresentaram maior riqueza de espécies e o substrato mais colonizado foi solo. Os resultados obtidos ampliam as informações sobre a diversidade taxonômica e ecologia das briófitas do Cerrado.Palavras-chave: musgos, hepáticas, ecologia de comunidades, savana brasileira

    Oviposition of Quesada gigas in weed no hostess: implication in pest management

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    Maccagnan, Douglas Henrique Bottura, Matuo, Tomás Kanashiro, Martinelli, Nilza Maria (2017): Oviposition of Quesada gigas in weed no hostess: implication in pest management. Ciência Rural 47 (9): 1-4, DOI: 10.1590/0103-8478cr20170152, URL: http://dx.doi.org/10.1590/0103-8478cr2017015

    Zammara smaragdula walker, 1858 (hemiptera: Cicadidae): First record for Brazil

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    The present note reports the first record for Brazil of the cicada Zammara smaragdula Walker, 1858 (Hemiptera, Cicadidae, Zammarini). This new record brings the number of reported Cicadidae species for Brazil to 153, including three species in the genus Zammara. © 2011 Check List and Authors

    Oviposition of Quesada gigas in weed no hostess: implication in pest management

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    ABSTRACT: This study recorded the choice of dry plant of Conyza spp as oviposition site by cicada Quesada gigas (Olivier, 1790). We presented issues of natural history of the cicadas that indicate the inability of immatures to complete life cycle in this species of plant. Some implications on cultures where Q. gigas has economic importance are also discussed

    New records of the cicada genus Fidicinoides Boulard and Martinelli, 1996 (Hemiptera: Cicadidae: Fidicinini) from the state of Mato Grosso, Brazil

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    Fidicinoides picea (Walker, 1850) and Fidicinoides poulaini Boulard and Martinelli, 1996 are recorded for the first time from the state of Mato Grosso, extending the known distribution of these species to the south. Thereby, the number of Fidicinoides species from Mato Grosso is increased to nine, being Mato Grosso the state with the largest number of recorded species of this genus in Brazil. © 2012 Check List and Authors

    Primeiro registro de Guyalna cuta em pinhão-manso no estado de Mato Grosso do Sul

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    Trata-se do primeiro registro de ocorrência de Guyalna cuta (Walker) (Hemiptera: Cicadidae) em pinhão-manso, Jatropha curcas L. (Euphorbiaceae) no Estado de Mato Grosso do Sul. Adultos desse inseto foram observados na parte aérea da planta, durante novembro e dezembro de 2008 e de 2009. em Mato Grosso do Sul, existem plantios comerciais e experimentais do pinhão-manso, tornando-se necessários estudos relacionados a este inseto, a fim de prevenir eventuais danos à cultura.This is the first record of the occurrence of Guyalna cuta (Walker) (Hemiptera: Cicadidae) in physic nut plants, Jatropha curcas L. (Euphorbiaceae) in the State of Mato Grosso do Sul, county of Dourados. Adults of this insect were observed in the plant canopy during the months of November and December in 2008 and 2009. As there are commercial and experimental plantations of physic nut in Mato Grosso do Sul, further studies about this insect are necessary for preventing eventual damage to crop production
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