scholarly journals Molecular characterization of the Fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) on maize in southern Rajasthan, India

2021 ◽  
Author(s):  
Sakthivel Ramesh Babu ◽  
Perumal Pachippan ◽  
Raja Manoharan ◽  
Sonika Joshi ◽  
Deepika Kalyan ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
Caribbean Region ◽  
Plant Identification ◽  
African Region ◽  
Tropical America ◽  
Lepidopteran Pest ◽  
Lepidoptera Noctuidae

Abstract The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) is a polyphagous Lepidopteran pest, a native to tropical and sub-tropical America and recently it has invaded the African and Asian countries. Presently, the mitochondrial Cytochrome Oxidase Subunit I (COI) - gene based molecular characterization of FAW samples from the maize fields of southern Rajasthan has revealed the occurrence of corn and rice strains there. The occurrence of such S. frugiperda population of Rajasthan region could be traced its origin from the Florida-Caribbean region or African region. Further, the Tpi gene region analysis showed that the S.frugiperda forms found in the maize fields are only the corn strains. In the Indian Rajasthan populations of FAW, the Tpi-variant2 category is the highest one and is then followed by the Tpi-variant1 and Tpi-variant3 was unique with C and T at Tpie4192 and Tpie4198, respectively. Further research is needed towards the confirmation of these tentatively identified strains of S. frugiperda that would in turn helpful for the proper monitoring, host-plant identification and the effective management of such pests.

scholarly journals Molecular characterization and pathogenicity of isolates of Beauveria spp. to fall armyworm

2008 ◽  
Vol 43 (4) ◽  
pp. 513-520 ◽  
Author(s):  
Andréa Almeida Carneiro ◽  
Eliane Aparecida Gomes ◽  
Claudia Teixeira Guimarães ◽  
Fernando Tavares Fernandes ◽  
Newton Portilho Carneiro ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Spodoptera Frugiperda ◽  
Sequence Comparison ◽  
Rapd Markers ◽  
Fall Armyworm ◽  
Its Sequence ◽  
Its Sequencing ◽  
Host Insect ◽  
Rdna Its

The objective of this work was to evaluate the pathogenicity of 24 Beauveria isolates to Spodoptera frugiperda larvae, and characterize them molecularly through rDNA-ITS sequencing and RAPD markers. Sequencing of rDNA-ITS fragments of 570 bp allowed the identification of isolates as B. bassiana or B. brongniarti by sequence comparison to GenBank. Sixty seven polymorphic RAPD fragments were capable to differentiate 20 among 24 Beauveria isolates, grouping them according to the derived host insect and to pathogenicity against maize fall armyworm larvae. Three RAPD markers were highly associated to the pathogenicity against S. frugiperda, explaining up to 67% of the phenotypic variation. Besides identification and molecular characterization of Beauveria isolates, ITS sequence and RAPD markers proved to be very useful in selecting the isolates potentially effective against S. frugiperda larvae and in monitoring field release of these microorganisms in biocontrol programs.

Molecular Characterization of Host Strains of Spodoptera frugiperda (Lepidoptera: Noctuidae) in Southern Brazil

2008 ◽  
Vol 101 (3) ◽  
pp. 619-626 ◽  
Author(s):  
Vilmar Machado ◽  
Milena Wunder ◽  
Vanessa D. Baldissera ◽  
Jaime V. Oliveira ◽  
Lidia M. Fiúza ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Spodoptera Frugiperda ◽  
Southern Brazil ◽  
Lepidoptera Noctuidae ◽  
Host Strains

Molecular characterization of Cry1F resistance in fall armyworm, Spodoptera frugiperda from Brazil

2020 ◽  
Vol 116 ◽  
pp. 103280 ◽  
Author(s):  
Debora Boaventura ◽  
Julia Ulrich ◽  
Bettina Lueke ◽  
Anderson Bolzan ◽  
Daniela Okuma ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm

First record of fall armyworm Spodoptera frugiperda (J.E. Smith (Lepidoptera: Noctuidae) on maize in Viet Nam

Zootaxa ◽  
2020 ◽  
Vol 4772 (2) ◽  
pp. 396-400
Author(s):  
DAO THI HANG ◽  
NGUYEN VAN LIEM ◽  
PHẠM VĂN LAM ◽  
KRIS A.G. WYCKHUYS
Keyword(s):  
Spodoptera Frugiperda ◽  
Rural Livelihoods ◽  
Fall Armyworm ◽  
First Record ◽  
Poultry Feed ◽  
Value Chains ◽  
Viet Nam ◽  
Invasion History ◽  
Lepidopteran Pest ◽  
Lepidoptera Noctuidae

The neotropical fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) is an important lepidopteran pest with a broad geographical distribution (Goergen et al. 2015, Early et al. 2018, Sharanabasappa et al. 2018). Larvae of S. frugiperda feed on more than 350 plant species, including several economically-important crops such as maize, sugarcane or rice (Montezano et al. 2018). Following its invasion of the African continent and of South Asia in 2016 and 2018 respectively, FAW has caused important crop losses and associated livelihood impacts (Baudron et al., 2019). During 2019, FAW rapidly spread across Southeast Asia and FAW-attributed feeding damage was recorded on maize in Viet Nam. In Viet Nam, maize is the second most important staple food crop after rice, is extensively used for livestock production and poultry feed, and thus plays a central role in sustaining rural livelihoods (Dang et al. 2004). Hence, the recent FAW invasion and the anticipated pest-induced yield losses will carry important repercussions for local maize value chains and are likely to degrade farmers’ revenue base. In this study, we conducted a morphological and molecular identification of locally-collected FAW individuals to better characterize the species’ invasion history in Viet Nam. 

scholarly journals Molecular Characterization of Bacillus thuringiensis cyt Genes and Their Effect Against Fall Armyworm, Spodoptera frugiperda

2014 ◽  
Vol 6 (7) ◽  
Author(s):  
Maria L. M. Costa ◽  
Ubiraci G. P. Lana ◽  
Emerson C. Barros ◽  
Luciano V. Paiva ◽  
Fernando H. Valicente
Keyword(s):  
Bacillus Thuringiensis ◽  
Molecular Characterization ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm

scholarly journals Impact of an Exotic Invasive Pest, Spodoptera frugiperda (Lepidoptera: Noctuidae), on Resident Communities of Pest and Natural Enemies in Maize Fields in Kenya

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1074
Author(s):  
Bonoukpoè Mawuko Sokame ◽  
Boaz Musyoka ◽  
Julius Obonyo ◽  
François Rebaudo ◽  
Elfatih M. Abdel-Rahman ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
Invasive Pest ◽  
Growth Stages ◽  
Insect Communities ◽  
Exotic Invasive Species ◽  
Before And After ◽  
Exotic Invasive ◽  
Lepidoptera Noctuidae

The interactions among insect communities influence the composition of pest complexes that attack crops and, in parallel, their natural enemies, which regulate their abundance. The lepidopteran stemborers have been the major maize pests in Kenya. Their population has been regulated by natural enemies, mostly parasitoids, some of which have been used for biological control. It is not known how a new exotic invasive species, such as the fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera, Noctuidae), may affect the abundance and parasitism of the resident stemborers. For this reason, pest and parasitism surveys have been conducted, before and after the FAW invaded Kenya, in maize fields in 40 localities across 6 agroecological zones (AEZs) during the maize-growing season, as well as at 3 different plant growth stages (pre-tasseling, reproductive, and senescence stages) in 2 elevations at mid-altitude, where all maize stemborer species used to occur together. Results indicated that the introduction of the FAW significantly correlated with the reduction of the abundance of the resident communities of maize stemborers and parasitoids in maize fields; moreover, the decrease of stemborer density after the arrival of FAW occurred mostly at both reproductive and senescent maize stages. It also suggests a possible displacement of stemborers by FAW elsewhere; for example, to other cereals. However, since this study was conducted only three years after the introduction of the FAW, further studies will need to be conducted to confirm such displacements.

scholarly journals First record of a parasitoid, Megaselia (M) scalaris (Diptera: Phoridae) of fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) from India

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Sharanabasappa S. Deshmukh ◽  
S. Kiran ◽  
Atanu Naskar ◽  
Palam Pradeep ◽  
C. M. Kalleshwaraswamy ◽  
...  
Keyword(s):  
Outer Surface ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
First Record ◽  
Instar Larva ◽  
Major Threat ◽  
Megaselia Scalaris ◽  
Maize Cultivation ◽  
First Time ◽  
Lepidoptera Noctuidae

AbstractThe fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), has become a major threat in maize cultivation since its invasion to India in 2018. The humpbacked fly, Megaselia scalaris (Loew) (Diptera: Phoridae), was recorded as a laboratory parasitoid of FAW, for the first time in India. Initially, 30–40 maggots of M. (M) scalaris emerged out from the dead pre-pupa and pupa of laboratory-reared FAW. The fly laid up to 15 eggs on the outer surface of 6th instar larva or pre-pupa of the FAW. The incubation period was 1–2 days. The fly had 3 larval instars which lasted 3–4 days and a pupal period of 10–11 days. The adults survived for 6–7 days.

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