Oviposition of European Corn Borer (Lepidoptera: Pyralidae) and Impact of Natural Enemy Populations in Transgenic Versus Isogenic Corn

Orr, David B.; Landis, Douglas A.

doi:10.1093/jee/90.4.905

Cited by 139 publications

(100 citation statements)

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“…For instance, the ratio of eggs/female by the number of egg masses/female should have resulted in 34.30 eggs/egg mass; however the value obtained was of 31.48; or the data 47.70 days, obtained for the sum of the pre-oviposition, oviposition and post-oviposition periods, was different from the 27.21 days obtained for female longevity of P. nigrispinus. Similar number of prey killed with both soybean genotypes (Table 1) agrees with Orr & Landis (1997), who did not verify differences in predation of egg and larvae of Ostrinia (Hiibner) (Lepidoptera: Pyralidae nubilalis feeding on the resistant or susceptible soybean genotypes.…”

Section: Resultssupporting

confidence: 82%

Reproductive characteristics of the predator Podisus nigrispinus fed with an insect resistant soybean variety

Neto

Zanúncio

Picanço

et al. 2002

Pesq. agropec. bras.

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The objective of this research was to evaluate the effect of the insect resistant soybean genotype IAC 17 on reproductive characteristics of Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) females compared to the soybean insect susceptible genotype UFV 16. Treatments were: T1) females of P. nigrispinus fed on plants of the UFV 16 and Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) caterpillars reared on leaves of this variety; T2) females of P. nigrispinus fed on plants of the IAC 17 and A. gemmatalis caterpillars reared on leaves of this variety. Longevity of females, pre-oviposition, oviposition and pos-oviposition periods, number of eggs and egg masses/ female, egg weight, interval between egg mass laying, number of eggs/egg mass, percentage of nymphs, number of nymphs/female and total number of prey killed/female of P. nigrispinus were evaluated. Most of the characteristics evaluated showed similar results between treatments, but the oviposition period was longer for females reared on the resistant genotype than on the susceptible one and the percentage of total females that laid eggs was lower on the IAC 17. Also, the resistant genotype caused higher mortality of P. nigrispinus females at the beginning of its adult stage and egg production by females of this predator was better spread along its adult stage with this resistant genotype. On the other hand, results suggest no effect of the resistant genotype on the offspring of this predator.Index terms: Anticarsia gemmatalis, insects, reproduction, biological control, pest control. Características reprodutivas do predador Podisus nigrispinus alimentado com variedade de soja resistente a insetosResumo O objetivo desta pesquisa foi avaliar o efeito do genótipo IAC 17, resistente a insetos, nas características reprodutivas de fêmeas de Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae), utilizando o genótipo susceptível UFV 16 como controle. Os tratamentos foram: T1) fêmeas de P. nigrispinus alimentadas com plantas de UFV 16 e lagartas de Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae), criadas em folhas desta cultivar; T2) fêmeas de P. nigrispinus alimentadas com plantas de IAC 17, e lagartas de A. gemmatalis, criadas em folhas desta cultivar. Avaliou-se a longevidade das fêmeas, períodos de pré-oviposição, oviposição e pós-oviposição, número de ovos e de posturas/fêmea, peso dos ovos, intervalo entre posturas, número de ovos/postura, porcentagem de ovos eclodidos, número de ninfas/fêmea e número total de presas mortas/fêmea de P. nigrispinus. A maioria das características avaliadas mostrou resultados semelhantes entre tratamentos, exceto o período de oviposição, que foi mais longo para fêmeas criadas no genótipo resistente que no susceptí-vel, e a porcentagem de fêmeas que ovipositaram antes de morrer, que foi menor na IAC 17. Além disso, o genótipo IAC 17 causou maior mortalidade de fêmeas de P. nigrispinus no início de sua fase adulta e distribuição mais uniforme da produção de ovos ao longo do período adulto desse predado...

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Section: Resultssupporting

confidence: 82%

Reproductive characteristics of the predator Podisus nigrispinus fed with an insect resistant soybean variety

Neto

Zanúncio

Picanço

et al. 2002

Pesq. agropec. bras.

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“…The 1st study to compare 0. nubilalis oviposition preference for a non-Bt com hybrid or its Bt counterpart suggests that moths are not influenced by B. thuringiensis Cry lAb endotoxin (Orr and Landis 1997). This supports earlier studies that indicate oviposition of diamondback moth, Plutella xyostella (L.), females on cabbage leaf disks in petri dishes ( Groeters et al 1992) and broccoli plants (Riggin-Bucci and Gould 1996) is not affected by the presence of B. thuringiensis toxins.…”

Section: European Corn Borer Ostrinia Nubilalissupporting

confidence: 88%

“…This supports earlier studies that indicate oviposition of diamondback moth, Plutella xyostella (L.), females on cabbage leaf disks in petri dishes ( Groeters et al 1992) and broccoli plants (Riggin-Bucci and Gould 1996) is not affected by the presence of B. thuringiensis toxins. Orr and Landis (1997) evaluated a single 176-event hybrid. Now, 5 Bt events are commercially available in multiple com hybrids that express Cry lAb, Cry lAc, or Cry9C proteins.…”

Section: European Corn Borer Ostrinia Nubilalismentioning

confidence: 99%

Oviposition by European Corn Borer (Lepidoptera: Crambidae) in Response to Various Transgenic Corn Events

Hellmich

Higgins

Witkowski

et al. 1999

Journal of Economic Entomology

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Oviposition preference by European corn borers, Ostrinia nubilalis (Hübner), for or against transgenic corn would influence amounts of refuge required for resistance management. The objective of this research was to determine if various Bacillus thuringiensis (Bt) corn transgenic events influence O. nubilalis oviposition. All commercially available events (currently 5) were evaluated, plus 1 experimental event. Results from 3 independent studies are reported, including 3 field-cage experiments with vegetative corn, 2 field-cage experiments with reproductive corn, and 2 field experiments with natural O. nubilalis on reproductive corn. In each case, Bt corn hybrids are compared with their near isogenic hybrids by counting numbers of egg masses on each plant type. More extensive comparisons were made in 3 of the experiments by determining the number, size, and location of egg masses on the corn hybrids. Moths laid more egg masses on Bt corn than on non-Bt corn in 1 cage experiment. These results, however, were not found in any of the other experiments. There is evidence that suggests cage effects influence moth oviposition more than Bt protein.

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“…Various direct and indirect effects on natural enemies that are important in pest control are possible (Schüler et al, 1999a) and a number of studies have addressed these potential effects. Most of these studies have involved Bt maize (maize plants producing a Bacillus thuringiensis toxin) and have shown little or no negative effect of Bt maize (e.g., Orr and Landis, 1997;Pilcher et al, 1997). A notable exception is the reduced development and increased mortality of the predatory lacewing Chrysoperla carnae when it consumes Bt maize-fed prey (Hilbeck et al, 1998).…”

Section: Evaluation Of Transgenic Cropsmentioning

confidence: 99%

Recruitment of predators and parasitoids by herbivore-injured plants

Turlings

Wäckers

2004

Advances in Insect Chemical Ecology

300

258

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Oviposition of European Corn Borer (Lepidoptera: Pyralidae) and Impact of Natural Enemy Populations in Transgenic Versus Isogenic Corn

Cited by 139 publications

References 0 publications

Reproductive characteristics of the predator Podisus nigrispinus fed with an insect resistant soybean variety

Reproductive characteristics of the predator Podisus nigrispinus fed with an insect resistant soybean variety

Oviposition by European Corn Borer (Lepidoptera: Crambidae) in Response to Various Transgenic Corn Events

Recruitment of predators and parasitoids by herbivore-injured plants

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