Effects of
Bacillus thuringiensis
and Hd-73 Delta-Endotoxin on Growth, Behavior, and Fitness of Susceptible and Toxin-Adapted Strains of
Heliothis virescens
(Lepidoptera: Noctuidae)

Anderson, Arne

doi:10.1093/ee/20.1.30

Cited by 75 publications

(52 citation statements)

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“…In general, physiological resistance to toxins is expected to evolve more slowly if an insect avoids toxic plants or plant parts because this will reduce selection pressure (Gould and Anderson 1991). Results from this study indicate that western corn rootworm larvae do not exhibit behavior that leads to either reduced or increased exposure to toxins.…”

Section: Discussionmentioning

confidence: 85%

“…Finally, understanding behavioral responses of insects to toxins is an important aspect of resistance management, because behavioral responses can affect the rate of resistance evolution (Gould and Anderson 1991, Frutos et al 1999, Peck et al 1999. SpeciÞcally, behavioral responses can inßuence the amount of exposure to toxins, which in turn can inßuence selection pressure (Gould 1984, Onstad 2008.…”

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confidence: 99%

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Adaptation by Western Corn Rootworm (Coleoptera: Chrysomelidae) to Bt Maize: Inheritance, Fitness Costs, and Feeding Preference

et al. 2012

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We examined inheritance of resistance, feeding behavior, and fitness costs for a laboratory-selected strain of western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), with resistance to maize (Zea maize L.) producing the Bacillus thuringiensisBerliner (Bt) toxin Cry3Bb1. The resistant strain developed faster and had increased survival on Bt maize relative to a susceptible strain. Results from reciprocal crosses of the resistant and susceptible strains indicated that inheritance of resistance was nonrecessive. No fitness costs were associated with resistance alleles in the presence of two entomopathogenic nematode species, Steinernema carpocapsae Weiser and Heterorhabditis bacteriophora Poinar. Larval feeding studies indicated that the susceptible and resistant strains did not differ in preference for Bt and non-Bt root tissue in choice assays. KeywordsDiabrotica virgifera virgifera, feeding behavior, pest resistance, transgenic maize RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. ABSTRACT We examined inheritance of resistance, feeding behavior, and Þtness costs for a laboratory-selected strain of western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), with resistance to maize (Zea maize L.) producing the Bacillus thuringiensis Berliner (Bt) toxin Cry3Bb1. The resistant strain developed faster and had increased survival on Bt maize relative to a susceptible strain. Results from reciprocal crosses of the resistant and susceptible strains indicated that inheritance of resistance was nonrecessive. No Þtness costs were associated with resistance alleles in the presence of two entomopathogenic nematode species, Steinernema carpocapsae Weiser and Heterorhabditis bacteriophora Poinar. Larval feeding studies indicated that the susceptible and resistant strains did not differ in preference for Bt and non-Bt root tissue in choice assays.KEY WORDS Diabrotica virgifera virgifera, feeding behavior, pest resistance, transgenic maize

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Section: Discussionmentioning

confidence: 85%

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confidence: 99%

Adaptation by Western Corn Rootworm (Coleoptera: Chrysomelidae) to Bt Maize: Inheritance, Fitness Costs, and Feeding Preference

et al. 2012

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“…In particular, data on movement of pests (Davis and Onstad, 2000;Hibbard et al, 2005) have been used to guide the development of resistance management plans for pests of insect-resistant transgenic crops (European corn borer, Ostrinia nubilalis Hübner, [U.S. -EPA, 2001] and corn rootworms, Diabrotica spp., [NCR-46, 2001]). However, relatively fewer studies have investigated how pest behavioral responses to insect-resistant transgenic crops are influenced by alleles that confer resistance to plant-incorporated toxins (but see Gould and Anderson, 1991;Schwartz et al, 1991;Harris et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Video-tracking and On-plant Tests Show Cry1Ab Resistance Influences Behavior and Survival of Neonate Ostrinia nubilalis Following Exposure to Bt Maize

et al. 2009

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To examine how resistance to Bacillus thuringiensis (Bt) toxins influences movement and survival of European corn borer (Ostrinia nubilalis [Hübner]) neonates, the responses of Cry1Ab-resistant , -susceptible, and hybrid (F1) larvae were examined using two different techniques. First, using an automated videotracking system, aspects of O. nubilalis movement were quantified in the presence of artificial diet incorporating 50% non-Bt or insect-resistant Cry1Ab maize tissue. Second, O. nubilalis dispersal and survival were measured 48-72 h after hatching on a Cry1Ab maize plant surrounded by two non-Bt maize plants. Video tracking indicated the presence of Cry1Ab tissue increased the total distance moved (m), time moving (%), and time away from the diet (%) for O. nubilalis while decreasing meander (degrees/cm). However, resistant larvae showed reduced movement and increased meander (≈localized searching) relative to susceptible or hybrid larvae on diet This article is a U.S. government work, and is not subject to copyright in the United States.incorporating Cry1Ab tissue. Conversely, when placed onto Cry1Ab maize plants, resistant larvae were more likely than susceptible O. nubilalis to disperse onto adjacent non-Bt plants. The difference in on-plant dispersal seems to reflect greater survival after toxin exposure for resistant larvae rather than increased activity. These results suggest that simplified 'Petri dish' tests may not be predictive of larval movement among non-Bt and insect-resistant Bt maize plants. Because models of O. nubilalis resistance evolution incorporate various movement and survival parameters, improved data for on-plant behavior and survival of Bt-resistant , -susceptible, and hybrid larvae should help preserve the efficacy of transgenic insect-resistant maize.

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“…Indeed, if resistance entails a fitness cost, the spread of a recessive allele could be prevented by an appropriate resistance management strategy (Lenormand and Raymond, 1998;Carrière and Tabashnik, 2001;Carrière et al, 2004;Bates et al, 2005). Although fitness costs associated with Bt resistance were not always detected (eg Gould and Anderson, 1991;Tang et al 1997), they have been reported in many pests (Groeters et al, 1994;Trisyono and Whalon, 1997;Alyokhin and Ferro, 1999;Oppert et al, 2000;Carrière et al, 2001a, b;Akhurst et al, 2003;Janmaat and Myers, 2003;Higginson et al, 2005. Bird and Akhurst (2004 showed that, in H. armigera, most fitness costs associated with Bt resistance (eg a lower percentage of survival or a longer mean time to pupation) are recessive.…”

Section: Introductionmentioning

confidence: 99%

Frequency and fitness cost of resistance to Bacillus thuringiensis in Chrysomela tremulae (Coleoptera: Chrysomelidae)

Al¹,

Bourguet

et al. 2006

Heredity

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The 'high dose-refuge' (HDR) strategy is commonly recommended and currently used for delaying or preventing pest adaptation to transgenic plants producing Bacillus thuringiensis (Bt) toxins. The efficiency of this strategy depends, among other factors, on the initial frequency of Bt resistance alleles and on the fitness costs associated with these alleles. Two years ago, an allele conferring resistance to Bt poplar was detected in a French population of the poplar pest Chrysomela tremulae F. Although this pest had never been subjected to Bt selection pressure due to human activities, the frequency of this allele was estimated at 0.0037, with a 95% credible (CI) interval of 0.00045-0.0080. We investigated the frequency of this allele in a second sample of C. tremulae collected more than 500 km from the site of the initial population. The estimated frequency in this sample was 0.0113 (95% CI 0.0031-0.0247), reinforcing the conclusion that resistance to Bt plants may be present at detectable frequencies in pest populations before selection resulting from pest management by humans. The frequency of the Bt resistance allele over the two samples was 0.0049 (95% CI 0.0020-0.0091). We also followed five laboratory lines in which the frequency of this allele was initially fixed at 0.500. After five generations maintained on non-Bt poplar leaves, the frequency of this allele decreased in all lines, whereas allelic frequencies at a neutral locus were unaffected. Thus, the Bt resistance allele detected in French populations of C. tremulae is probably associated with a fitness cost.

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Effects of Bacillus thuringiensis and Hd-73 Delta-Endotoxin on Growth, Behavior, and Fitness of Susceptible and Toxin-Adapted Strains of Heliothis virescens (Lepidoptera: Noctuidae)

Cited by 75 publications

References 0 publications

Adaptation by Western Corn Rootworm (Coleoptera: Chrysomelidae) to Bt Maize: Inheritance, Fitness Costs, and Feeding Preference

Adaptation by Western Corn Rootworm (Coleoptera: Chrysomelidae) to Bt Maize: Inheritance, Fitness Costs, and Feeding Preference

Video-tracking and On-plant Tests Show Cry1Ab Resistance Influences Behavior and Survival of Neonate Ostrinia nubilalis Following Exposure to Bt Maize

Frequency and fitness cost of resistance to Bacillus thuringiensis in Chrysomela tremulae (Coleoptera: Chrysomelidae)

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