Life Tables and Population Dynamics of the Southwestern Corn Borer (Lepidoptera: Pyralidae) in Texas Corn

Knutson, Allen; Gilstrap, F. E.

doi:10.1093/ee/19.3.684

Cited by 22 publications

(37 citation statements)

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“…According to Knutson and Gilstrap (1990), cannibalism and disease cause the Þnal larval stage of the second-generation southwestern corn borer to experience density-dependent mortality. Typically, only one larva survives within a corn plant.…”

Section: Methodsmentioning

confidence: 99%

Modeling the Development of Resistance by Stalk-Boring Lepidopteran Insects (Crambidae) in Areas with Transgenic Corn and Frequent Insecticide Use

Onstad

Guse

Porter

et al. 2002

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We simulated the population dynamics and population genetics of two bivoltine species of corn borers, the European corn borer, Ostrinia nubilalis (Hübner), and the southwestern corn borer, Diatraea grandiosella Dyar, in a hypothetical region of irrigated transgenic and nontransgenic corn where insecticide was applied only to the nontransgenic refuge crop. Over the 100-yr time horizon, resistance developed quickly in both species and to both transgenic corn and the insecticide when the allele for resistance to the respective toxin was dominant. When the allele for transgenic resistance was not dominant and the refuge location was constant over the time horizon, spraying the refuge to control southwestern corn borer had no effect on how quickly resistance to the transgenic corn developed. In contrast, the European corn borer developed resistance to transgenic corn much sooner when the refuge was sprayed once per year, and the time to 3% resistance allele frequency decreased as efficacy of the insecticide increased. Only when the refuge was treated less than once every 5 yr (10 generations) did the frequency of application decline enough to permit resistance management for the European corn borer to approximate the effectiveness of an unsprayed refuge. A consistently sprayed refuge <40% of the corn acreage was an inadequate resistance management strategy for the European corn borer even when a low efficacy insecticide (70% mortality) was used. When assumptions about European corn borer adult behavior were changed and the adults behaved similarly to adult southwestern corn borer, the development of resistance to the transgenic crop was slowed significantly.

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Section: Methodsmentioning

confidence: 99%

Modeling the Development of Resistance by Stalk-Boring Lepidopteran Insects (Crambidae) in Areas with Transgenic Corn and Frequent Insecticide Use

Onstad

Guse

Porter

et al. 2002

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“…However, O. insidiosus populations were numerically lowest during R3 of each season (Kalsi et al 2014). Knutson & Gilstrap (1989) found that mean numbers of O. insidiosus were greatest during anthesis but declined as corn silk became dried and brown during R3. This may have resulted from a lack of fresh corn silk causing unfavorable breeding conditions for the predators during R2 and R3 (Barber 1936).…”

Section: Discussionmentioning

confidence: 94%

“…Also, besides ulidiid eggs and/or larvae, the most abundant arthropod species during silking (R1) in all 3 seasons was O. insidiosus (Kalsi et al 2014). Knutson & Gilstrap (1989) and Eckert et al (2006) also found Orius spp. to be the most abundant predators when they surveyed the fauna of corn ears.…”

mentioning

confidence: 85%

Resistance to Spodoptera frugiperda (Lepidoptera: Noctuidae) and Euxesta stigmatias (Diptera: Ulidiidae) in Sweet Corn Derived from Exogenous and Endogenous Genetic Systems

Nuessly¹,

Scully²,

Hentz³

et al. 2007

Journal of Economic Entomology

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“…Knutson and Gilstrap, 1990, Trichilo and Leigh, 1985, Mansour and Karchi, 1990, Zabudskaya, 1990and van Rensburg and Malan, 1990. In the studies presented in chapters 2 and 3 the distinction was made and it was found that the number of non-laying females increased, as the suitability of the plants to which the females were exposed to decreased.…”

Section: Preference -Performance Relationships In the Glasshouse Whitmentioning

confidence: 99%

Host plant adaptation in the glasshouse whitefly

Thomas

1993

J Applied Entomology

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Life Tables and Population Dynamics of the Southwestern Corn Borer (Lepidoptera: Pyralidae) in Texas Corn

Cited by 22 publications

References 0 publications

Modeling the Development of Resistance by Stalk-Boring Lepidopteran Insects (Crambidae) in Areas with Transgenic Corn and Frequent Insecticide Use

Modeling the Development of Resistance by Stalk-Boring Lepidopteran Insects (Crambidae) in Areas with Transgenic Corn and Frequent Insecticide Use

Resistance to Spodoptera frugiperda (Lepidoptera: Noctuidae) and Euxesta stigmatias (Diptera: Ulidiidae) in Sweet Corn Derived from Exogenous and Endogenous Genetic Systems

Host plant adaptation in the glasshouse whitefly

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