Biological Differences between Five Populations of Fall Armyworm (Lepidoptera: Noctuidae) Collected from Corn in Mexico

López-Edwards, Marilú; Hernández-Mendoza, José Luis; Pescador-Rubio, Alfonso; Molina-Ochoa, Jaime; Lezama-Gutiérrez, Roberto; Hamm, John J.; Wiseman, B. R.

doi:10.2307/3496577

Cited by 41 publications

(20 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An abundant potential prey item for the lady beetle is S. frugiperda an economically damaging pest of maize and cotton in Brazil and South America [4]–[6], [27], [28]. The data presented here indicate that larvae and adults of H. axyridis will prey on 24- to 72-hour-old S. frugiperda larvae under laboratory conditions.…”

Section: Discussionmentioning

confidence: 91%

Harmonia axyridis (Coleoptera: Coccinellidae) Exhibits No Preference between Bt and Non-Bt Maize Fed Spodoptera frugiperda (Lepidoptera: Noctuidae)

et al. 2012

View full text Add to dashboard Cite

A recent shift in managing insect resistance to genetically engineered (GE) maize consists of mixing non-GE seed with GE seed known as “refuge in a bag”, which increases the likelihood of predators encountering both prey fed Bt and prey fed non-Bt maize. We therefore conducted laboratory choice-test feeding studies to determine if a predator, Harmonia axyridis, shows any preference between prey fed Bt and non-Bt maize leaves. The prey species was Spodoptera frugiperda, which were fed Bt maize (MON-810), expressing the single Cry1Ab protein, or non-Bt maize. The predators were third instar larvae and female adults of H. axyridis. Individual predators were offered Bt and non-Bt fed prey larvae that had fed for 24, 48 or 72 h. Ten and 15 larvae of each prey type were offered to third instar and adult predators, respectively. Observations of arenas were conducted at 1, 2, 3, 6, 15 and 24 h after the start of the experiment to determine the number and type of prey eaten by each individual predator. Prey larvae that fed on non-Bt leaves were significantly larger than larvae fed Bt leaves. Both predator stages had eaten nearly all the prey by the end of the experiment. However, in all combinations of predator stage and prey age, the number of each prey type consumed did not differ significantly. ELISA measurements confirmed the presence of Cry1Ab in leaf tissue (23–33 µg/g dry weight) and S. frugiperda (2.1–2.2 µg/g), while mean concentrations in H. axyridis were very low (0.01–0.2 µg/g). These results confirm the predatory status of H. axyridis on S. frugiperda and that both H. axyridis adults and larvae show no preference between prey types. The lack of preference between Bt-fed and non-Bt-fed prey should act in favor of insect resistance management strategies using mixtures of GE and non-GE maize seed.

show abstract

Section: Discussionmentioning

confidence: 91%

Harmonia axyridis (Coleoptera: Coccinellidae) Exhibits No Preference between Bt and Non-Bt Maize Fed Spodoptera frugiperda (Lepidoptera: Noctuidae)

et al. 2012

View full text Add to dashboard Cite

show abstract

“…De acordo com Drès & Mallet (2002), os biótipos S. frugiperda representam espécies crípticas associadas às plantas hospedeiras, devido às diferenças de compatibilidade reprodutiva (Pashley & Martin 1987). No México, diferenças biológicas e de compatibilidade reprodutiva, detectadas entre cinco populações de S. frugiperda provenientes da cultura do milho, evidenciaram a existência de dois biótipos que representam espécies crípticas (Edwards et al 1999).…”

unclassified

Biologia comparada de populações de Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) em folhas de milho e arroz

Busato¹,

Grützmacher²,

Garcia³

et al. 2005

Neotrop. Entomol.

View full text Add to dashboard Cite

-The objective of this work was to analyze the biology of Spodoptera frugiperda (J.E. Smith) populations in corn and irrigated rice leaves. Caterpillars from four populations from Rio Grande do Sul state were collected from isolated areas (distant more than 300 km apart), from the counties of Santa Rosa (M/SR) and Uruguaiana (A/U), traditional areas of corn and irrigated rice production, respectively, and in adjacent areas in Pelotas county, where corn (M/P) and rice (A/P) are grown side by side. In the laboratory, 150 caterpillars were individualized in glass vials containing leaves of the Pioneer 30F33 corn hybrid and the cultivar of the irrigated rice Pelota, under controlled temperature (25 ± 1ºC), relative humidity (70 ± 10%) and photophase (14h). After adult emergence, 20 couples were individualized in cylindrical PVC cages, covered inside with paper towels, and fed with a 10% honey aqueous solution. All populations of S. frugiperda collected from corn and rice, regardless their place of origin, showed unique physiological needs, as evidenced by the different biological parameters evaluated. The Populations M/SR and M/P (maize) and A/U and A/P (irrigated rice), did not differ physiologically. Based on the results, both "corn" and "rice" S. frugiperda biotypes are present in Rio Grande do Sul.KEY WORDS: Insecta, fall armyworm, host plant, biotype RESUMO -O objetivo do trabalho foi estudar a biologia de populações de Spodoptera frugiperda (J.E. Smith) em folhas de milho e arroz irrigado. Foram coletadas lagartas de quatro populações no Rio Grande do Sul: em áreas isoladas (distanciadas em mais de 300 km), municípios de Santa Rosa (M/SR) e Uruguaiana (A/U), tradicionalmente produtores de milho e arroz irrigado, respectivamente; e, em áreas adjacentes, município de Pelotas, que produz milho (M/P) e arroz irrigado (A/P) lado a lado. Individualizaram-se 150 lagartas em tubos de vidro contendo folhas do híbrido de milho Pioneer 30F33 e do cultivar de arroz irrigado Pelota, em condições controladas de temperatura (25 ± 1ºC), umidade relativa (70 ± 10%) e fotofase (14h). Por ocasião da emergência dos adultos, 20 casais foram individualizados em gaiolas cilíndricas de PVC revestidas internamente com papel jornal, e alimentados com solução aquosa de mel a 10%. As populações de S. frugiperda originárias do milho e arroz, independente do local de coleta, apresentaram necessidades fisiológicas intrínsecas e que são evidenciadas nos diferentes parâmetros biológicos avaliados. As populações M/SR e M/P (cultura do milho) e A/U e A/P (cultura do arroz irrigado), não apresentaram diferenças fisiológicas. Diante dos resultados, conclui-se que ambos biótipos "milho" e "arroz" de S. frugiperda ocorrem no Rio Grande do Sul. PALAVRAS-CHAVE: Insecta, lagarta-do-cartucho, lagarta-da-folha, planta hospedeira, biótipoAs culturas do milho e do arroz irrigado apresentam significativa importância sócio-econômica para o Rio Grande do Sul. Porém, o ataque de pragas desfolhadoras tem causado significativa redução na sua produtivid...

show abstract

“…The existence of at least two races of S. frugiperda ("maize" and "rice") in the New World can lead to misinterpretation about the potential risk of damage to either crop. Both races contain the same three major pheromone components in gland extracts of females, but exhibit differences in both the concentrations and relative proportions of the compounds (Lopez-Edwards et al 1999;Nagoshi and Meagher 2004;Busato et al 2004;Virla et al 2008). Also, both races may be collected in a single trap containing pheromone (Lima and McNeil 2004;Groot et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Using sex pheromone traps in the decision-making process for pesticide application against fall armyworm (Spodoptera frugiperda[Smith] [Lepidoptera: Noctuidae]) larvae in maize

Cruz

Figueiredo

Silva

et al. 2012

International Journal of Pest Management

View full text Add to dashboard Cite

The fall armyworm, Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae), is a major pest of maize and frequently demands control measures. The timing of insecticide application is a key factor in determining its efficiency, so an experiment was designed to investigate this. Application of insecticide was based on three criteria: (i) the number of trap-caught moths in a Delta-type trap with a commercial sex pheromone lure placed in the center of the target area, soon after plant emergence; (ii) the percentage of plants exhibiting pinhole-type damage (10% or 20%), and (iii) the percentage of plants exhibiting shot hole-type damage (10% or 20%) compared to a check plot without any control measures. We found that the number of trap-caught moths was, compared to the other methods, the2 best means of deciding on insecticide application in maize to control the fall armyworm. Using pheromone traps, we obtained the best performance of the insecticide Spinosad, causing >90% larval mortality. Without insecticide application, maize yield reduction due to fall armyworm larva damage was 39%.

show abstract

Biological Differences between Five Populations of Fall Armyworm (Lepidoptera: Noctuidae) Collected from Corn in Mexico

Cited by 41 publications

References 13 publications

Harmonia axyridis (Coleoptera: Coccinellidae) Exhibits No Preference between Bt and Non-Bt Maize Fed Spodoptera frugiperda (Lepidoptera: Noctuidae)

Harmonia axyridis (Coleoptera: Coccinellidae) Exhibits No Preference between Bt and Non-Bt Maize Fed Spodoptera frugiperda (Lepidoptera: Noctuidae)

Biologia comparada de populações de Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) em folhas de milho e arroz

Using sex pheromone traps in the decision-making process for pesticide application against fall armyworm (Spodoptera frugiperda[Smith] [Lepidoptera: Noctuidae]) larvae in maize

Contact Info

Product

Resources

About