Development of the Parasitoid Chelonus insularis (Hymenoptera: Braconidae) in Spodoptera frugiperda (Lepidoptera: Noctuidae) Larvae Reared on Castor Bean and Maize Leaves

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
Erika Padilla-Cortes ◽  
Laura Martínez-Martínez
Keyword(s):  
Spodoptera Frugiperda ◽  
Castor Bean ◽  
Maize Leaves ◽  
Lepidoptera Noctuidae ◽  
Chelonus Insularis

Biochemical Analysis of a Castor Bean Leaf Extract and its Insecticidal Effects Against Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae)

2012 ◽  
Vol 41 (6) ◽  
pp. 503-509 ◽  
Author(s):  
G D Rossi ◽  
C D Santos ◽  
G A Carvalho ◽  
D S Alves ◽  
L L S Pereira ◽  
...  
Keyword(s):  
Spodoptera Frugiperda ◽  
Castor Bean ◽  
Leaf Extract ◽  
Biochemical Analysis ◽  
Lepidoptera Noctuidae

scholarly journals Egg Parasitoids Survey of Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) in Maize and Sorghum in Central Mexico

Insects ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 157 ◽  
Author(s):  
Jannet Jaraleño-Teniente ◽  
J. Refugio Lomeli-Flores ◽  
Esteban Rodríguez-Leyva ◽  
Rafael Bujanos-Muñiz ◽  
Susana E. Rodríguez-Rodríguez
Keyword(s):  
Natural Enemies ◽  
Spodoptera Frugiperda ◽  
Egg Parasitoid ◽  
Egg Parasitoids ◽  
Invasive Pest ◽  
Trichogramma Pretiosum ◽  
Field Surveys ◽  
Control Programs ◽  
Lepidoptera Noctuidae ◽  
Chelonus Insularis

Spodoptera frugiperda (Smith) is the main maize pest in America and was recently detected as an invasive pest in some countries in Asia and Africa. Among its natural enemies presented in Mexico, Trichogramma pretiosum Riley is the only egg parasitoid used in Integrated Pest Management (IPM) programs regardless of its effectiveness. A search for natural enemies of S. frugiperda was then carried out to determine whether this parasitoid has been established, and to detect native egg parasitoids or predators associated with this pest. The sentinel technique (egg masses) was used, and then placed in maize and sorghum fields in the state of Guanajuato, Mexico. Trichogramma atopovirilia Oatman and Platner, an egg parasitoid, and Chelonus insularis Cresson egg-larva parasitoid were recovered from field surveys. Among the natural enemies that preyed on eggs of S. frugiperda, we found mites of the genus Balaustium, and Dermaptera of the genus Doru, both species in great abundance. Laboratory tests were performed to compare the potential parasitism of T. atopovirilia against T. pretiosum. T. atopovirilia obtained 70.14% parasitism while T. pretiosum, 29.23%. In field cages, three doses of the parasitoids were tested. Total parasitism did not exceed 8% in any of the two species, but T. atopovirilia parasitized a greater number of hosts using two and three parasitoids per pest egg. Then, the use of Trichogramma species needs to be reevaluated in biological control programs against S. frugiperda.

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".

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.

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