New method for rearing Spodoptera frugiperda in laboratory shows that larval cannibalism is not obligatory

Silva, Cherre Sade Bezerra Da; Parra, José Roberto Postali

doi:10.1590/s0085-56262013005000029

Cited by 35 publications

(30 citation statements)

References 17 publications

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“…Although cannibalism in S. frugiperda, under field and laboratory conditions is well documented (Chapman et al 1999a, b;Sarmento et al 2002;Chapman et al 2000;Goussain et al 2002), recent studies indicated that this behavior may not occur frequently (Da Silva and Parra 2013;Bentivenha et al 2016), which might support observations of S. frugiperda's lower level of aggressiveness compared to H. zea. Although the lower aggressiveness of S. frugiperda and its seemingly lower mobility suggest vulnerability and disadvantage when interactive with H. zea, intraguild studies has showed that this species can gain advantage in interaction against H. zea.…”

Section: Discussionmentioning

confidence: 86%

“…According to the research, cannibalism in S. frugiperda might be an indirect advantage through the elimination of competitors (Chapman et al 2000). The reasons under which a larva cannibalizes or preys on a competitor might be related to obtaining a high nutritional value meal in an environment of low nutritional value food, like when only maize leaves are available (Da Silva and Parra 2013). Even with food abundance, cannibalism might occur and could be directly affected by density of insects (Polis 1981).…”

Section: Discussionmentioning

confidence: 99%

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Attack and defense movements involved in the interaction of Spodoptera frugiperda and Helicoverpa zea (Lepidoptera: Noctuidae)

et al. 2016

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The fall armyworm, Spodoptera frugiperda (J. E. Smith) and the corn earworm, Helicoverpa zea (Boddie) are among the main pests of maize. Both species exhibit cannibalistic behavior and quite often share the same feeding guild in maize (maize ears), which can result in several interspecific and intraspecific interactions. Paired interaction scenarios of intraspecific and interspecific larvae were assessed in arenas in the presence and absence of food to characterize movements resulting from interactions of these insects. There was a difference in the frequency of behavioral movements in all the interactions, except for S. frugiperda in the presence of food. Head touching and recoiling were the predominant movements in most of the interaction scenarios. Spodoptera frugiperda exhibited a predominance of defensive movements when competing against H. zea in the same instars. Cannibalism and predation occurred frequently in interactions involving 6th instar of H. zea against opponents in 4th instar. Larvae of H. zea show a higher aggressive movement than S. frugiperda. The larvae of S. frugiperda take advantage during the interactions, although they present more defensive movements compared to H. zea. This study provides relevant information regarding the interaction of these species and intraguild interaction, which might influence the population dynamics and the competitive displacement of pest species that share the same ecological niche. Keywords: Intraguild interaction, Ethogram, Fall armyworm, Corn earworm, Aggressive Key message• The intraguild interactions of fall armyworm and corn earworm are still unclear; moreover they exhibit cannibalistic/ predation behavior and may share the same feeding niche in maize. Our studies have indicated the main movements in interactions between these species.• Fall armyworm took advantage of corn earworm during the contests, although it presented more defensive movements. • This is relevant information for population dynamics, displacement of species, and it has implications for transgenic maize insect resistance management strategies for these species.

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Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Attack and defense movements involved in the interaction of Spodoptera frugiperda and Helicoverpa zea (Lepidoptera: Noctuidae)

et al. 2016

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“…maize silks in plastic cup arenas). Previous studies reported that cannibalism rates were more frequent when larvae were confined on maize leaves than on artificial diet, indicating that cannibalistic behavior is related to a lack of food with high nutritional value . In another study, cannibalism rates for third‐instar S. frugiperda were less than 20% when reared on maize seedlings and increased to 34% when there was a shortage of food .…”

Section: Discussionmentioning

confidence: 86%

Intraguild interactions and behavior of Spodoptera frugiperda and Helicoverpa spp. on maize

Bentivenha

Montezano

Hunt

et al. 2017

Pest Management Science

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“…Las larvas fueron colocadas en recipientes plásticos con tapas individuales que contenían dieta artificial (Parra, 2001;Da Silva & Parra, 2013), y trasladadas al laboratorio de cría de insectos antes de pasar las 48 h. Una vez en el laboratorio, las larvas fueron transferidas a otros vasos de plástico de 50 ml que contenían dieta artificial y ubicadas en salas de cría en condiciones controladas de temperatura (25 ± 5°C), humedad relativa (60 ± 10%), y fotoperíodo (14:10 horas L: O), hasta el estadio de pupa. Las pupas fueron retiradas y desinfestadas con hipoclorito de sodio al 0,2% en agua destilada para luego ser colocadas sobre papel de filtro en platos plásticos cubiertos con vasos transparentes de 250 cm 3 .…”

Section: Materiales Y Métodosunclassified

Toxicidad sobre Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) de la proteína Bt expresada en hojas de diferentes eventos de maíz transgénico iberados en Paraguay

Gómez

Villalba²,

Arias³

et al. 2017

RSEA

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ABSTRACT. The transgenic maize that expresses the Bt protein is one of the strategies most used for the control of Spodoptera frugiperda, key pests of this crop in America. With the objective of verifying the susceptibility of S. frugiperda; toxicity studies were conducted of the proteins Bt expressed in leaves of different events of maize released in Paraguay, 2B587hx™ (cry1F); VT triple PRO™ (Cry1A/Cry2Ab/Cry3Bb) and Formula TL™ (Cry1Ab). The rearing of S. frugiperda was conducted in the laboratory to obtain a uniform population under controlled conditions of temperature (25 ± 2°C), relative humidity (60 ± 10%) and photoperiod of 14:10 h (L:D). Mortality was evaluated and in the case of survivors; the weight and length of the pupae, the fertility of the females, the longevity of the adults, the viability of eggs, and the duration of the different stages and the total cycle. The supply of larvae neonates in the leaves of maize of the event VT triple PRO™ produced 100% mortality; however, in the larvae fed with leaves of the events 2B587hx™ and Formula TL™; the mortality was 58% and 56%, respectively. The survivors to these treatments had a longer life cycle, fertility and reduced fertility.

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New method for rearing Spodoptera frugiperda in laboratory shows that larval cannibalism is not obligatory

Cited by 35 publications

References 17 publications

Attack and defense movements involved in the interaction of Spodoptera frugiperda and Helicoverpa zea (Lepidoptera: Noctuidae)

Attack and defense movements involved in the interaction of Spodoptera frugiperda and Helicoverpa zea (Lepidoptera: Noctuidae)

Intraguild interactions and behavior of Spodoptera frugiperda and Helicoverpa spp. on maize

Toxicidad sobre Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) de la proteína Bt expresada en hojas de diferentes eventos de maíz transgénico iberados en Paraguay

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