Insecticidal activity from leaves and sesquiterpene lactones of Tithonia diversifolia (Helms.) A. Gray (Asteraceae) on Spodoptera frugiperda (Lepidoptera: Noctuidae)

2022 ◽  
Vol 144 ◽  
pp. 377-379
Author(s):  
Maria Augusta Ferraz Machado Miranda ◽  
Andreia Pereira Matos ◽  
Ana Carolina Volante ◽  
Gracielle Oliveira Sabbag Cunha ◽  
Sônia Cristina Juliano Gualtieri
Keyword(s):  
Insecticidal Activity ◽  
Spodoptera Frugiperda ◽  
Sesquiterpene Lactones ◽  
Tithonia Diversifolia ◽  
Lepidoptera Noctuidae

Molecular and Morphological characterization of multiple nucleopolyhedrovirus from Mexico and their insecticidal activity against Spodoptera frugiperda (Lepidoptera: Noctuidae)

2019 ◽  
Vol 144 (1-2) ◽  
pp. 123-132
Author(s):  
Magali Ordóñez‐García ◽  
Claudio Rios‐Velasco ◽  
José de Jesús Ornelas‐Paz ◽  
Juan Carlos Bustillos‐Rodríguez ◽  
Carlos Horacio Acosta‐Muñiz ◽  
...  
Keyword(s):  
Insecticidal Activity ◽  
Spodoptera Frugiperda ◽  
Morphological Characterization ◽  
Multiple Nucleopolyhedrovirus ◽  
Lepidoptera Noctuidae

scholarly journals Biological Activity of Phytochemicals from Agricultural Wastes and Weeds on Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)

2021 ◽  
Vol 13 (24) ◽  
pp. 13896
Author(s):  
Analleli Jiménez-Durán ◽  
Josefina Barrera-Cortés ◽  
Laura Patricia Lina-García ◽  
Rosa Santillan ◽  
Ramón Marcos Soto-Hernández ◽  
...  
Keyword(s):  
Biological Activity ◽  
Emerging Adults ◽  
Insecticidal Activity ◽  
Spodoptera Frugiperda ◽  
Insect Pest ◽  
Ethanolic Extract ◽  
Low Fertility ◽  
Melia Azedarach ◽  
Cedrela Odorata ◽  
Lepidoptera Noctuidae

Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) is a polyphagous insect pest native to America. Due to its capacity for adaptation and migration, it is currently located in Africa, Asia, and Oceania, where it threatens agricultural crops. The ability of S. frugiperda to develop resistance to insecticides is one of the reasons for the continuous search for more effective, low-cost, and environmentally friendly control products. In the present work, the insecticidal activity of ethanolic and hexane extracts obtained from fresh and dehydrated leaves of Piper auritum Kunth (Piperales: Piperaceae), Piper umbellatum L. (Piperales: Piperaceae), and Cedrela odorata L. (Sapindales: Meliaceae) was studied against first instar larvae of S. frugiperda. The ethanolic extracts of the dehydrated leaves of C. odorata and P. auritum presented insecticidal activity as high (100% mortality at a concentration of 92 mg/cm2) as that obtained with the positive control, Melia azedarach L. (Sapindales: Meliaceae). The GC-MS analysis of the extracts revealed the presence of phytochemicals classified mainly into the groups of monoterpenes, sesquiterpenes, diterpenes, phenylpropanoids, alcohols, and fatty acids. P. auritum grows and propagates rapidly. In addition, due to its low toxicity in mammals and non-target insects, it is a plant with the potential to be used as a botanical insecticide. The exposure of S. frugiperda larvae to low concentrations of ethanolic extract of P. auritum allowed us to observe their biological activity in the development of this insect. The LC50 was 22.1 mg/cm2. At sublethal concentrations (LC21 and LC35) the low fertility of the emerging adults was noticeable.

scholarly journals Efficacy of microencapsulated nucleopolyhedroviruses from Colombia as biological insecticides against Spodoptera frugiperda (Lepidoptera: Noctuidae)

2017 ◽  
Vol 66 (2) ◽  
Author(s):  
Gloria Patricia Barrera Cubillos ◽  
Juliana Andrea Gómez-Valderrama ◽  
Laura Fernanda Villamizar Rivero
Keyword(s):  
Insecticidal Activity ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
Field Trials ◽  
Control Treatment ◽  
Economic Injury Level ◽  
Original Activity ◽  
Economic Injury ◽  
Insect Mortality ◽  
Lepidoptera Noctuidae

Wettable powder formulations by microencapsulation of viral occlusion bodies (OBs) of both Spodoptera frugiperda multiple nucleopolyhedrovirus from Colombia (SfCOL) and a genotypic variant (SfCOL-A) were evaluated for controlling the fall armyworm S. frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in maize crops. Microencapsulation preserved OBs activity after three months of storage at 35ºC, where insecticidal activity loss was not greater than 12%. Additionally, the formulation protected the OBs against inactivation caused by UV-B radiation, retaining its insecticidal activity after 6 hours of UV laboratory exposure, in contrast to unformulated viral suspensions, which presented an Original Activity Remaining (OAR) between 12.1 and 50%. Under greenhouse conditions, the insect mortality was greater than 80% with microencapsulated viruses. In field trials, treatments reduced the percentage of damaged plants to levels below the economic injury level (35%) when the formulated and unformulated virus were applied at 8x1011 OBs/ha (800g/ha) dose, while the damage in the control treatment was close to 60%. Microencapsulation of SfCOL and SfCOL-A OBs provides useful advantages related to half-life and photostability.

scholarly journals Insecticidal and Cholinesterase Activity of Dichloromethane Extracts of Tithonia diversifolia on Atta cephalotes Worker Ants (Formicidae: Myrmicinae)

Insects ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 180
Author(s):  
Kriss D. Pantoja-Pulido ◽  
Jonathan Rodríguez ◽  
José H. Isaza-Martínez ◽  
Margarita Gutiérrez-Cabrera ◽  
Ana J. Colmenares-Dulcey ◽  
...  
Keyword(s):  
Insecticidal Activity ◽  
Cholinesterase Activity ◽  
Sesquiterpene Lactones ◽  
Field Studies ◽  
Acetylcholinesterase Inhibition ◽  
Tithonia Diversifolia ◽  
Atta Cephalotes ◽  
Promising Alternative ◽  
Laboratory Colonies ◽  
Urban Pests

Leaf-cutter ants are agricultural and urban pests that defy chemical control methods. Laboratory and field studies have revealed repellent and insecticidal activity by the extracts of Tithonia diversifolia (Asteraceae), known as Mexican sunflower, as a promising alternative for the control of the leaf-cutter ant Atta cephalotes. This study evaluated the effects of different extracts (non-polar and polar) of T. diversifolia dry leaves on worker ants from laboratory colonies of A. cephalotes through ingestion and contact. In addition, the biological activity of the extracts as inhibitors of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) was evaluated. A dichloromethane extract at 1000 ppm presented the highest insecticidal activity through ingestion, causing 70% and 90% worker ant mortality after five and seven days of treatment, respectively. The acetylcholinesterase inhibition values showed that the dichloromethane presented the best AChE concentration of inhibition (IC50) at 73.9 ± 11.06 μg/mL, compared to its fractions, which demonstrates that its activity is potentiated when the crude extract is used. Our results can be attributed to the existence of terpenes and sesquiterpene lactones, which are likely inhibitors of AChE, in T. diversifolia.

scholarly journals Selection and characterization of Bacillus thuringiensis isolates with a high insecticidal activity against Spodoptera frugiperda (Lepidoptera: Noctuidae)

2016 ◽  
pp. 1522-1536 ◽  
Author(s):  
Fernando Barnabe Cerqueira ◽  
Giselly Batista Alves ◽  
Roberto Franco Teixeira Corrêa ◽  
Érica Soares Martins ◽  
Luiz Carlos Bertucci Barbosa ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Insecticidal Activity ◽  
Spodoptera Frugiperda ◽  
Lepidoptera Noctuidae

scholarly journals Exigências térmicas e estimativa do número de gerações dos biótipos "milho" e "arroz" de Spodoptera frugiperda

2005 ◽  
Vol 40 (4) ◽  
pp. 329-335 ◽  
Author(s):  
Gustavo Rossato Busato ◽  
Anderson Dionei Grützmacher ◽  
Mauro Silveira Garcia ◽  
Fabrizio Pinheiro Giolo ◽  
Moisés João Zotti ◽  
...  
Keyword(s):  
Spodoptera Frugiperda ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Lepidoptera Noctuidae

O objetivo deste trabalho foi avaliar o efeito da temperatura sobre a biologia dos biótipos "milho" e "arroz" de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) e estimar o número de gerações por ano em laboratório e campo. Foram coletadas lagartas de quatro populações de S. frugiperda no Estado do Rio Grande do Sul, identificadas eletroforeticamente como os biótipos "milho" e "arroz", em áreas isoladas, distanciadas entre si em mais de 300 km, produtoras de milho e arroz irrigado e em áreas adjacentes, que produzem milho e arroz irrigado lado a lado. A temperatura mais adequada para o desenvolvimento dos dois biótipos foi 25ºC. Em laboratório, podem ser obtidas 11,0 e 11,3 gerações ano-1 do biótipo "milho" proveniente de áreas isoladas e adjacentes, respectivamente. Foram estimadas 12,1 gerações ano-1 do biótipo "arroz" quando proveniente de áreas isoladas e 12,2 gerações ano-1 quando proveniente de áreas adjacentes. Em campo, estimou-se a ocorrência de 8,3 e 6,1 gerações ano-1 do biótipo "milho", respectivamente, em áreas isoladas e áreas adjacentes e 8,4 e 7,0 gerações ano-1 do biótipo "arroz", respectivamente, em áreas isoladas e áreas adjacentes. Em áreas adjacentes, o biótipo "arroz" apresenta uma geração a mais ao longo de um ano em relação ao biótipo "milho".

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