Spatial distribution of Spodoptera frugiperda (Lepidoptera: Noctuidae) in maize landraces grown in Colima, Mexico

Abstract. Hutasoit RT, Kalqutny SH, Widiarta IN. 2020. Spatial distribution pattern, bionomic, and demographic parameters of a new invasive species of armyworm Spodoptera frugiperda (Lepidoptera; Noctuidae) in maize of South Sumatra, Indonesia. Biodiversitas 21: 3576-3582. The fall armyworm, Spodoptera frugiperda, has reportedly been found in Indonesia since 2019. The main hosts of this new invading insect are food crops and several other crops. This study aimed to examine the spatial distribution pattern, bionomic, and demographic parameters for developing a sampling plan and strategy to control the pest. The study was conducted by observing the total population of S. frugiperda on nine plots of maize plants weekly. The development of S. frugiperda from egg to adult was also observed in plastic containers (diameter of 4 cm x height of 8 cm) fed with maize in controlled room conditions (temperature = 29 ± 2.1°C, 74 ± 10.1% RH). Observations were made on several bionomic and demographic parameters. The results of the study showed that the S. frugiperda distributes in groups, and each group spreads with a low grouping rate. The life cycle of S. frugiperda occurs for an average of 25.11 days with a range of 24-26 days. The net reproduction rate (Ro) of S. frugiperda was 422.46 individuals/parent/generation. S. frugiperda‘s intrinsic rate of increase was 0.22 individuals/parent/day. The length of generation (T) and S. frugiperda doubling time (DT) were 26.59 and 3.04 days, respectively. This species has survived well on the maize in the new habitat, so it will threaten the food crops, especially the maize. A sampling plan can be developed based on spatial distribution parameters to monitor population density to implement a control threshold and control measures from the early stage of maize during adult pre-emergence.

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Medicinal plant bioactivity – Catuaba (Anemopaegma arvense (Vell) Stellfeld JF & de Souza) on Spodoptera frugiperda (JE Smith) Lepidoptera: Noctuidae) in the larval stage

Planta Medica ◽

10.1055/s-0031-1282968 ◽

2011 ◽

Vol 77 (12) ◽

Author(s):

A Rieder ◽

RS Fernandes

Keyword(s):

Medicinal Plant ◽

Spodoptera Frugiperda ◽

Larval Stage ◽

Lepidoptera Noctuidae

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

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x2005000400003 ◽

2005 ◽

Vol 40 (4) ◽

pp. 329-335 ◽

Cited By ~ 8

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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New association between Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) and native natural enemies: Bioprospection of native natural enemies as biological control agents

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/771/1/012030 ◽

2021 ◽

Vol 771 (1) ◽

pp. 012030

Author(s):

M I Tawakkal ◽

D Buchori ◽

N Maryana ◽

Pudjianto

Keyword(s):

Biological Control ◽

Natural Enemies ◽

Spodoptera Frugiperda ◽

Biological Control Agents ◽

New Association ◽

Lepidoptera Noctuidae

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Developmental stage variation in Spodoptera frugiperda (Lepidoptera: Noctuidae) low temperature tolerance: implications for overwintering

Austral Entomology ◽

10.1111/aen.12536 ◽

2021 ◽

Author(s):

Onalethata Keosentse ◽

Reyard Mutamiswa ◽

Hannalene Du Plessis ◽

Casper Nyamukondiwa

Keyword(s):

Low Temperature ◽

Developmental Stage ◽

Spodoptera Frugiperda ◽

Temperature Tolerance ◽

Low Temperature Tolerance ◽

Lepidoptera Noctuidae

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

Agronomy ◽

10.3390/agronomy11061074 ◽

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.

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

Egyptian Journal of Biological Pest Control ◽

10.1186/s41938-021-00439-w ◽

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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