Espécies de cigarrinhas-das-pastagens (Hemiptera: Cercopidae) no meio-norte do Mato Grosso

Bernardo, Eduardo Roberto de Almeida; Rocha, Vander de Freitas; Puga, Osni; Silva, Ricardo Adaime da

doi:10.1590/s0103-84782003000200030

Cited by 11 publications

(10 citation statements)

References 5 publications

(1 reference statement)

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“…In several regions of Brazil where upland rice fields are surrounded by pastures, severe damage occurs from migrating adults when the grasses become unfavorable hosts. Significant areas occupied by rice and corn, especially in the states of Mato Grosso do Sul, Goiás, Minas Gerais and more recently, Mato Grosso have been infested by these insects (Bernardo et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Reports of new wing color polymorphism and taxonomic information to cercopids (Auchenorrhyncha: Cercopidae) from upland rice crop, Pará State, Brazil

et al. 2018

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Cercopidae is one of the largest families of the spittlebug superfamily Cercopoidea. Most spittlebugs species are characterized by bright color patterns. Thus, this study evaluated for the first time the Cercopidae species collected in rice crops, Novo Progresso, Pará state, Brazil. Insects were collected weekly between November/2010 and March/2011 from areas without (WA) and with agrochemical applications (AA). Four species were recorded: Deois incompleta (Walker, 1851) (71 specimens in WA area and 50 in AA area); Mahanarva spectabilis (Distant, 1909) (39 specimens in WA area and 39 in AA area); Mahanarava tristis (Fabricius, 1803) (26 specimens in WA area and 20 in AA area); Zulia pubescens (Fabricius, 1803) (11 specimens in WA area and four in AA area). The species collected displayed pronounced color polymorphism when compared with the color patterns of the same species from other regions. This makes correct identification more difficult for these species. Therefore, taxonomic and diagnostic informations provided in this study will help in the correct identification, control and monitoring of these insects in future studies. Besides that, we recommend monitoring in rice fields and further study of the biology and ecology of cercopids in Brazil to assess the potential of these species as rice pests. Keywords: Cercopoidea, Deois incompleta, Mahanarva spectabilis, Mahanarva tristis, Zulia pubescens. Registro de novos polimorfismos de cores de asas e informações taxonômicas IntrodutionThe rice crop (Oryza sativa L.) (Poales: Poaceae) occupies approximately 10% of the world arable land. Rice cultivation began in South Asia and at present rice is grown in more than 110 countries (Heinrichs, 1994;IRRI, 2006). Brazil is the largest producer of rice outside Asia, even with its recent cultivation compared to the Asian continent (Azambuja et al., 2004, FAO, 2003. According to the Brazilian Harvest Monitoring 2012/2013 report of the Companhia Nacional de Abastecimento/National Supply Company (Conab, National Company of Food Supply), the Brazilian states with the highest production (Rio Grande do Sul, Santa Catarina, Mato Grosso, Maranhão, Tocantins and Pará) account for approximately 80% of the national rice production (Ferreira and Villar, 2004;IRGA, 2009). Some environmental factors interfere negatively on crop production; among these, insects are responsible for much of the losses from germination to harvest, mainly due to mechanical damage and the transmission of plant pathogens (Ferreira et al., 2001;SOSBAI, 2005;Martins et al., 2009).Insects in the hemipteran suborder Auchenorrhyncha commonly occur in rice crops. Twenty-two planthopper species in the family Delphacidae and 34 leafhopper species in the family Cicadellidae occur in rice in South and South-East Asia (Wilson and Claridge, 1991). Several spittlebug species (family Cercopidae) are also known to damage rice crops. Some planthoppers can damage rice plants by direct feeding, which causes a symptom known as 'hopperburn'. These insects have been m...

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Section: Discussionmentioning

confidence: 99%

Reports of new wing color polymorphism and taxonomic information to cercopids (Auchenorrhyncha: Cercopidae) from upland rice crop, Pará State, Brazil

et al. 2018

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“…Spittlebugs are the main pests associated with forage grasses in the tropical Americas [1]. The damage caused by spittlebugs varies for each species of grass, and economic losses can reach alarming figures depending on the region, climatic conditions, and management [2]. The global losses caused by these insects are estimated to range from US$840 million to US$2.1 billion per year [3].…”

Section: Introductionmentioning

confidence: 99%

Insecticidal Activity of Compounds of Plant Origin on Mahanarva spectabilis (Hemiptera: Cercopidae)

Dias

Auad

Magno

et al. 2019

Insects

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The damage caused by spittlebugs varies according to the species of grass, and the losses can reach alarming levels. Measures for population control are currently restricted to the use of resistant grasses and the diversification of pastures. Therefore, alternative control measures are necessary, such as the use of botanical insecticides. The aim of this study was to evaluate the insecticidal activities of thymol, carvacrol, eugenol, cinnamaldehyde, and trans-anethole on Mahanarva spectabilis eggs, nymphs, and adults under laboratory conditions. In the egg tests, treatments with eugenol, carvacrol, and thymol showed the highest mortalities, presenting efficiencies higher than 85% after 48 h of application. In the nymph tests, the treatments with thymol and carvacrol at 2.5% and eugenol at 2.0% and 2.5% showed intermediate efficiencies, with values above 61%. The highest mortality was observed in the treatment with trans-anethole at 2.5%, with an efficiency of 95%. In the tests with adults, only treatment with trans-anethole at 2.5% obtained an efficiency reaching 90%; in the other treatments, the efficiency did not exceed 51%. These results showed that, at these concentrations, trans-anethole presents a high rate of insecticidal activity on M. spectabilis nymphs and adults and, therefore, is recommended as a potential natural insecticide for the control of this pest.

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“…É vasta a entomofauna associada às pastagens e inclui várias pragas (BERNARDO et al, 2003;VALÉRIO, 2005 …”

Section: Introductionunclassified

A entomofauna terrestre em diferentes ecossistemas de pastagens em Sobral, Ceará

Sousa¹,

Xavier²,

Braga³

2013

B. Indústr. Anim.

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Espécies de cigarrinhas-das-pastagens (Hemiptera: Cercopidae) no meio-norte do Mato Grosso

Cited by 11 publications

References 5 publications

Reports of new wing color polymorphism and taxonomic information to cercopids (Auchenorrhyncha: Cercopidae) from upland rice crop, Pará State, Brazil

Reports of new wing color polymorphism and taxonomic information to cercopids (Auchenorrhyncha: Cercopidae) from upland rice crop, Pará State, Brazil

Insecticidal Activity of Compounds of Plant Origin on Mahanarva spectabilis (Hemiptera: Cercopidae)

A entomofauna terrestre em diferentes ecossistemas de pastagens em Sobral, Ceará

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