Prospection and Fungal Virulence Associated with <i>Mahanarva spectabilis</i> (Hemiptera: Cercopidae) in an Amazon Silvopastoral System

Campagnani, Michelle Oliveira; Campos, Wellington G.; Amorim, Soraya Sander; Rosa, Luiz Henrique; Auad, Alexander Machado; Cangussú, Mauroni Alves; Maurício, Rogério Martins

doi:10.1653/024.100.0204

Cited by 6 publications

(4 citation statements)

References 42 publications

(41 reference statements)

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“…Spittlebug management strategies must be used together so that the control of this pest is sustainable and efficient. Among the management strategies used in Brazil, we highlight the diversification of pastures [13], chemical control [14], biological control [15,16], and the use of resistant plants [17]. The use of insecticides and botanical repellents is a widespread strategy, and studies of this nature are necessary for the management of forage pests.…”

Section: Introductionmentioning

confidence: 99%

Olfactory Response of Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) to Volatile Aqueous Extracts of Plant Origin Applied to Elephant Grass Plants (Pennisetum purpureum Schum)

2021

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In this study, we evaluate the olfactory responses of Mahanarva spectabilis adults to aqueous extracts from the following non-host plants for the pest insect: garlic (Allium sativum L.), rue (Ruta graveolens L.), cinnamon (Cinnamomum verum J. Presl), lemongrass (Cymbopogon citratus Stapf.), clove (Syzygium aromaticum L.), star anise (Illicium verum Hook.f), eucalyptus (Eucalyptus globulus Labill.), tobacco (Nicotiana tabacum L.), and thyme (Thymus vulgaris L.) applied to the host plant, elephant grass (Pennisetum purpureum Schum.). The bioassays were performed using a Y olfactometer, and the combinations of the plant extracts applied to the host plant were tested against fresh air and against the host plant without the extract. The results show that the extracts of tobacco and star anise were non-attractive to M. spectabilis adults. The extracts from the remaining plants did not alter the response of M. spectabilis to the host plant.

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Section: Introductionmentioning

confidence: 99%

Olfactory Response of Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) to Volatile Aqueous Extracts of Plant Origin Applied to Elephant Grass Plants (Pennisetum purpureum Schum)

2021

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“…The feeding behaviour of nymphs on roots below the soil surface makes it difficult to control them with chemical insecticides and brings up the need to look for alternatives. To date, few works in the Americas have demonstrated the importance of biological control for these pests, concentrating in regulating agents such as predators (Lastra, Gómez, & Castro, 2007;Mendonça, 2005), parasitoids (Triapitsyn, 2002;Valério & Oliveira, 2005), nematodes (Leite et al, 2005) and fungi (Dinardo-Miranda et al, 2004;García, Bustillo, Castro, & Arenas, 2012;Leite, Alves, Takada, Batista Filho, & Roberts, 2002;Matabanchoy Solarte, Bustillo Pardey, Castro Valderrama, Mesa Cobo, & Moreno Gil, 2012;Oliveira Campagnani et al, 2017;Oliveira Kassab et al, 2014). Unlike bacteria and viruses, fungi can infect insects not only through the gut, but also through spiracles and particularly through the surface of the integument.…”

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confidence: 99%

“…Hypocreales) is the entomopathogenic fungus more commonly used against these pests in tropical and subtropical regions under field conditions (Dinardo-Miranda et al, 2004;Ferron, 1978;García et al, 2012;Leite et al, 2002;Matabanchoy Solarte et al, 2012;Oliveira Campagnani et al, 2017;Oliveira Kassab et al, 2014), and it is the only fungal species recorded to date for adults and nymphs spittlebugs from Argentina . Although fungi from the order Entomophthorales occasionally have been reported to cause epizootics in spittlebug pests of pasture and sugarcane in Brazil (Batista Filho, Leite, Takada, Lamas, & Ramiro, 1997;Leite et al, 2002), there are no records for this fungal order infecting any spittlebugs from Argentina.…”

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Natural occurrence of the entomopathogenic genus Pandora on spittlebug pests of crops and pastures in Argentina

Foieri¹,

Pedrini

Toledo

2017

J Applied Entomology

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The natural occurrence of entomophathogenic fungi infecting spittlebugs (Hemiptera: Cercopidae) considered serious pests to pasture grasses and crops in Argentina was investigated during summer˗autumn (December to May) from 2013 to 2016. Adults and nymphs of spittlebugs were collected from Sorghum halepense and Setaria parviflora var. parviflora in San Miguel de Tucumán, Tucumán province. The entomopathogenic fungal species were characterized on the basis of morphological keys and molecular techniques. Microscopic characters were described from material mounted in lactophenol/aceto-orcein (1% w/v), and the amplification of the fungal SSU rDNA was carried out using the universal primers nu-SSU-0021-5′ and nu-SSU-1780-3′. Summarized information about occurrence of fungal infections on spittlebugs populations is provided. This study reports for the first time the occurrence of the genus Pandora infecting adults of the economically important spittlebugs Deois (Deois) mourei, D. (D.) knoblauchii, Isozulia christenseni christenseni and Notozulia entreriana from Argentina expanding the host range and geographical distribution of entomophthoralean fungi.

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“…Spittlebug management strategies must be used together so that the control of this pest is sustainable and efficient. Among the management strategies used in Brazil, we highlight the diversification of pastures ), chemical control (SUTIL et al, 2020, biological control (CAMPAGNANI et al, 2017;VERÍSIMO et al, 2020), and the use of resistant plants (SOBRINHO et al, 2010). The use of insecticides and botanical repellents is a widespread strategy, and studies of this nature are necessary for the management of forage pests.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of lethal and repellent action of aqueous vegetable extracts for the control of spittlebugs (Hemiptera: Cercopidae)

Nascimento¹

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Spittlebugs (Hemiptera: Cercopidae) are species considered to be the main pests of forage grasses throughout Tropical America. In Brazil, Mahanarva spectabilis (Distant) is the main and most limiting pest associated with elephant grass (Pennisetum purpureum Schum.). These insects have the potential to generate great economic losses for the milk and meat production chain, harming producers. Among the spittlebugs control tactics, the use of resistant grasses, biological control and the application of synthetic insecticides in adults are the best known methods. The use of synthetic insecticides is economically viable only when combined with other spittlebugs control strategies, but they are environmentally unsafe products, so it is necessary to research tactics that are less aggressive to the environment, socially viable and of low cost for mainly small farmers. In this context, the insecticidal and repellent action that plant compounds have against different insect-pest species stands out. Thus, the objectives of this research were to evaluate whether aqueous extracts of the aromatic plants A. sativum, R. graveolens, C. verum, C. citratus, S. aromaticum, I. verum, E. globulus, N. tabacum and T. vulgaris have an insecticidal effect on spittlebug nymphs and the choice of spittlebugs adults can be altered for elephant grass, by attraction or non-attraction, in olfactometry tests. In the first stage of the research, the insecticidal effect of the extracts on nymphs of M. spectabilis was evaluated. The results indicated that the tobacco extract was the most effective among all nine tested. At a concentration of 20%, after 48 hours, it reached an efficiency of 76%. Then, bioassays were carried out comparing 5 concentrations of tobacco extract (5%, 10%, 15%, 20% and, 25%), where the extract in the concentration of 25% reached an efficiency greater than 92%. As for the extraction methods, the infusion and decoction methods were shown to be equivalent to the standard extraction method (UAE). Tobacco extract is recommended as a strategy to control M. spectabilis, at a concentration of 25%, with its extraction by infusion and decoction. In the second stage, olfactometry bioassays were performed. The combinations of aqueous extracts applied to the host plant were tested against fresh air and against the host plant without the extract. The aqueous vegetable extracts of tobacco, star anise and eucalyptus were not attractive for the M. spectabilis, and can be used as a management tactic in the case of elephant grass.

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Prospection and Fungal Virulence Associated with Mahanarva spectabilis (Hemiptera: Cercopidae) in an Amazon Silvopastoral System

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 6 publications

References 42 publications

Olfactory Response of Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) to Volatile Aqueous Extracts of Plant Origin Applied to Elephant Grass Plants (Pennisetum purpureum Schum)

Olfactory Response of Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) to Volatile Aqueous Extracts of Plant Origin Applied to Elephant Grass Plants (Pennisetum purpureum Schum)

Natural occurrence of the entomopathogenic genus Pandora on spittlebug pests of crops and pastures in Argentina

Evaluation of lethal and repellent action of aqueous vegetable extracts for the control of spittlebugs (Hemiptera: Cercopidae)

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