The effect of Bt maize on Sesamia calamistis in South Africa

Berg, J. van den; Wyk, A. Van

doi:10.1111/j.1570-8703.2006.00492.x

Cited by 5 publications

(6 citation statements)

References 14 publications

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“…Many examples of Bt plants that impair the development of non-target lepidopteran pests have been documented. For example, Spodoptera littoralis Boisduval (Lepidoptera: Noctuidae) and Sesamia calamistis (Sugi) (Lepidoptera: Noctuidae) are susceptible to Bt corn with the Cry1Ab protein developed to control Ostrinia nubilalis (Hubner) (Lepidoptera: Crambidae) (Vojtech et al , 2005; Van den Berg & Van Wyk, 2006). Likewise, the mortality of Mamestra brassicae larvae (Linnaeus) (Lepidoptera: Noctuidae) was high when fed on the Cry1Ac protein containing Chinese Bt cabbage that is resistant to Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae) (Kim et al , 2008).…”

Section: Discussionmentioning

confidence: 99%

Development and reproduction ofSpodoptera eridania(Lepidoptera: Noctuidae) and its egg parasitoidTelenomus remus(Hymenoptera: Platygastridae) on the genetically modified soybean (Bt) MON 87701×MON 89788

Bortolotto

Silva

Bueno

et al. 2014

Bull. Entomol. Res.

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Genetically modified crops with insect resistance genes from Bacillus thuringiensis Berliner (Bt-plants) are increasingly being cultivated worldwide. Therefore, it is critical to improve our knowledge of their direct or indirect impact not only on target pests but also on non-target arthropods. Hence, this study evaluates comparative leaf consumption and performance of Spodoptera eridania (Cramer), a species that is tolerant of the Cry1Ac protein, fed with Bt soybean, MON 87701×MON 89788 or its near [corrected] non-Bt isoline. Using this species as a model, we assessed [corrected] the comparative performance of the egg parasitoid Telenomus remus Nixon on eggs of S. eridania produced from individuals that fed on these two soybean genotypes [corrected] as larvae. Results showed that Bt soybean did not affect pest foliage consumption, but did reduce larvel duration by two days despite larvae in both treatments having six instars. Nevertheless, survival of S. eridania larvae, pupal weight, sex ratio, fecundity and longevity of female moths, and egg viability did not differ between Bt and non-Bt soybeans. Adult longevity of S. eridania males was increased when caterpillars were fed with Bt soybean versus the near isoline. No adverse effects of this technology were observed for the egg parasitoid T. remus. [corrected].

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Section: Discussionmentioning

confidence: 99%

Development and reproduction ofSpodoptera eridania(Lepidoptera: Noctuidae) and its egg parasitoidTelenomus remus(Hymenoptera: Platygastridae) on the genetically modified soybean (Bt) MON 87701×MON 89788

Bortolotto

Silva

Bueno

et al. 2014

Bull. Entomol. Res.

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“…(2009) demonstrated that the females of Liriomyza trifolii (Burgess) preferred non-Bt cotton for ovipositing, Obonyo et al. (2008) , Van den Berg and Van Wyk (2007) , Torres and Ruberson (2006) , and Hellmich et al. (1999) signaled that lepidopteran females such as O. nubilalis, Heliothis virescens (Fabricius), Helicoverpa zea (Boddie), S esamia calamistis , and C hilo partellus cannot discriminate between transgenic varieties and their isogenic conventional cultivars.…”

Section: Discussionmentioning

confidence: 99%

“…Gravid females would also be expected to discriminate between Bt and non-Bt plants, although some studies have shown that ovipositing females of different moths cannot discriminate between Bt plants and their isogenic counterpart ( Hellmich et al. 1999 , Torres and Ruberson 2006 , Van den Berg and Van Wyk 2007 ). In the region where this study was carried out, non-Bt and Bt corn fields currently coexist and one should not rule out future planting of new varieties of multivitamin corn with very different characteristics, among which gravid females of S. nonagrioides may choose the most suitable ones for oviposition.…”

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confidence: 99%

Do Sesamia nonagrioides (Lepidoptera; Noctuidae) Gravid Females Discriminate Between Bt or Multivitamin Corn Varieties? Role of Olfactory and Visual Cues

Cruz¹,

Eizaguirre²

2015

Journal of Insect Science

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The Mediterranean corn borer, Sesamia nonagrioides Lefèbvre, is a key pest of corn and a main target of Bacillus thuringiensis (Bt) corn in Northeast Spain. Trends for future biotechnology crops indicate that Bt, non-Bt, and stacked corn varieties with metabolic pathways for vitamin-increased traits could coexist in same region. Knowledge of the oviposition response of gravid females of S. nonagrioides to these different varieties could be extremely important for managing strategies aimed for delaying resistance development. In dual-choice assays, we examined the host preference of gravid females of S. nonagrioides for four corn varieties: a new transgenic corn with increased vitamin levels, its near isogenic counterpart (M37W), a Bt corn plant, and its near isogenic counterpart. Olfactory cues were the predominant ones when gravid females looked for a suitable host to lay eggs, and no synergistic effects were observed when both visual and olfactory cues were present. When the plant was visible, the females preferred the odors emitted by the nontransgenic to its multivitamin transgenic counterpart and when they only could detect the volatiles they also preferred the nontransgenic M37W variety to the Bt corn variety. If gravid females are less attracted to corn with an increased level of vitamins, this could impact insect resistance management and the value of refuge plants, if such traits are stacked with an insect resistance trait.

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“…A wide range of insecticidal genes from Bt strains have been used to control insect pests. Maize plants transformed with Bt genes expressing Cry1Ab protein initially developed for control of Ostrinia nubilalis (Hubner) and Diatrea grandoiosella (Dyar) have been found to provide effective control of stem borers (Van Rensburg 1999, 2007, Van den Berg and Van Wyk 2007). Although insect‐resistant transgenic sorghums are yet to hit the market, Girijashankar et al.…”

Section: Discussionmentioning

confidence: 99%

Interactions of spotted stem borer Chilo partellus with wild relatives of sorghum

et al. 2012

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Interactions of spotted stem borer Chilo partellus with wild relatives of sorghum V enk at esw a r an KAMALA 1 , 6 , Ha ri C . SHA R M A 2 , D ag g u MANO H A R R A O 3 , Ko de boy ina S. VA R A P R A S A AbstractThe levels of resistance to spotted stem borer (Chilo partellus) in sorghum are low to moderate. We therefore evaluated wild relatives of sorghum to identify accessions with high levels of resistance to this pest and studied the mechanisms of resistance. Heterosorghum (Sorghum laxiflorum), Para-sorghum (S. australiense, S. purpureo-sericeum, S. versicolor, S. matarankense, S. timorense, S. brevicallosum and S. nitidum) and Stiposorghum (S. angustum, S. ecarinatum, S. extans, S. intrans, S. interjectum and S. stipoideum) showed very high levels of resistance to stem borer. Chaetosorghum (S. macrospermum), four wild races of S. bicolor subsp. verticilliflorum and S. halepense were found to be susceptible. Under no-choice conditions, egg laying was observed on all accessions, which significantly differed among the species/ accessions. Accessions belonging to Stiposorghum and Para-sorghum (S. purpureo-sericeum, S. versicolor and S. timorense) were significantly less preferred for oviposition than the resistant control, IS 2205. Accessions belonging to Stiposorghum showed slight leaf-feeding, but there was no deadheart formation. Although there was some damage in Para-sorghum, very few deadhearts were formed, and a few larvae that were recovered subsequently died. In Heterosorghum, the two accessions of S. laxiflorum were highly preferred for oviposition, and up to 82% deadhearts were recorded, but the six larvae that were recovered died within a month. Accessions belonging to Eu-sorghum showed maximum deadhearts, larval recovery and adult emergence. The results suggested that some of the wild relatives of sorghum possess high levels of resistance to C. partellus and both antixenosis and antibiosis are major components of resistance to this pest. Accessions showing high levels of resistance to stem borer can be utilized to increase the levels and diversify the bases of resistance to this pest in sorghum.

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The effect of Bt maize on Sesamia calamistis in South Africa

Cited by 5 publications

References 14 publications

Development and reproduction ofSpodoptera eridania(Lepidoptera: Noctuidae) and its egg parasitoidTelenomus remus(Hymenoptera: Platygastridae) on the genetically modified soybean (Bt) MON 87701×MON 89788

Development and reproduction ofSpodoptera eridania(Lepidoptera: Noctuidae) and its egg parasitoidTelenomus remus(Hymenoptera: Platygastridae) on the genetically modified soybean (Bt) MON 87701×MON 89788

Do Sesamia nonagrioides (Lepidoptera; Noctuidae) Gravid Females Discriminate Between Bt or Multivitamin Corn Varieties? Role of Olfactory and Visual Cues

Interactions of spotted stem borer Chilo partellus with wild relatives of sorghum

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