Adult Emergence, Ovarian Development, and Oviposition Sequence of the Western Corn Root worm in Nebraska12

Short, D. E.; Hill, Roscoe E.

doi:10.1093/jee/65.3.685

Cited by 22 publications

(24 citation statements)

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“…The population dynamics of the model closely resembled those measured in the Þeld (Short and Hill 1972) (Fig. 1).…”

Section: Resultssupporting

confidence: 67%

“…The population dynamics properties of the model were qualitatively corroborated by comparing the simulated population dynamics with one of several sets of empirical population dynamics data published by Short and Hill (1972). Because published population dynamics data on larval development were limited, we focused on comparing female emergence, preovipositional female numbers, and gravid female numbers between empirical data reported for Þeld populations in Nebraska and the simulated Þelds.…”

Section: Methodsmentioning

confidence: 88%

See 1 more Smart Citation

Assessing Risk of Resistance to Aerial Applications of Methyl-Parathion in Western Corn Rootworm (Coleoptera: Chrysomelidae)

Caprio¹,

Nowatzki²,

Siegfried³

et al. 2006

Journal of Economic Entomology

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“…The population dynamics of the model closely resembled those measured in the Þeld (Short and Hill 1972) (Fig. 1).…”

Section: Resultssupporting

confidence: 67%

Section: Methodsmentioning

confidence: 88%

Assessing Risk of Resistance to Aerial Applications of Methyl-Parathion in Western Corn Rootworm (Coleoptera: Chrysomelidae)

Caprio¹,

Nowatzki²,

Siegfried³

et al. 2006

Journal of Economic Entomology

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“…2012). Males typically emerge 1 week prior to females (Short and Hill 1972). Mating between beetles occurs during July and August, and teneral females are often mated immediately after emergence (Ball 1957).…”

Section: Introductionmentioning

confidence: 99%

Validation of a nested error component model to estimate damage caused by corn rootworm larvae

Tinsley

Estes

Gray

2012

J Applied Entomology

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The corn rootworm complex (Coleoptera: Chrysomelidae) constitutes a significant threat to maize production in the United States, and more recently, in Europe. We conducted an analysis of readily available field trial data to validate an existing damage function for corn rootworm larvae. We used a nested error component model with unbalanced panel data to describe the relationship between yield loss and root injury caused by these insects. These data were collected by personnel with the Insect Management and Insecticide Evaluation Programme (Department of Crop Sciences, University of Illinois) and represent 19 location‐years. To our knowledge, this is the largest data set used to estimate a damage function for corn rootworm larvae. Unlike many experiments examining the relationship between root injury and yield loss caused by corn rootworm larvae, the data set used for our analysis includes many Bt maize hybrids. Our model suggests that for each node of roots injured by corn rootworm larvae, a yield loss of approximately 15% can be expected. Statistically significant variance components included an effect of location and experimental error. We speculate that variation in weather across experimental sites was the principal factor contributing to the significant effect of location. The substantial experimental error observed for our model highlights the limitations of utilizing a multi‐year, geographically diverse damage function for predicting yield loss because of root injury on a small scale. We discuss major factors contributing to the variance components estimated by our model and suggest techniques for improving future analyses of the damage function for corn rootworm larvae.

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“…This phenomenon is known as protandry. Data from Short and Hill [1972] in Nebraska and Branson et al [1982] in Mexico (with D. v. zeae Krysan & Smith) indicated that males predominated for about 20 days after initial adult emergence began. Kuhlman et al [1970] showed that, in the laboratory, the time for posthatch development to the adult stage was shorter for male D. v. virgifera, but the time difference between the sexes was only between 1 and 3.1 days, depending upon the temperature.…”

Section: Introductionmentioning

confidence: 99%

The contribution of prehatch and posthatch development to protandry in the chrysomelid, Diabrotica virgifera virgifera

Branson

1987

Entomologia Exp Applicata

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Laboratory tests with eggs of Diabrotica virgifera virgifera LeConte showed that during a 10‐day hatching period, hatch of male eggs predominated on the first and second days, eggs of mixed sex, with ca. 1:1 ratio, hatched on the third and fourth days, and eggs hatching from the fifth to the tenth days were nearly all female. Overall, female eggs hatched a mean of 2.9 days later than male eggs. Not only did female eggs hatch later, but the time for posthatch development to the adult stage was 1.8 days longer for females. The later egg hatch and longer posthatch development for females resulted in female adults emerging a mean of 4.7 days later than male adults. Total adult emergence lasted 14 days; of this, males predominated during the first 5 days, and females predominated during the last 9 days. Males of D. v. virgifera appear to have evolved protandry (the tendency for males to emerge before females) by developing both a postdiapause embryonic stage and a combined larval and pupal stage of shorter duration. RÉSUMÉ Contribution à la protandrie des périodes précédant ou suivant l'éclosion des oeufs de Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae). L'observation, au laboratoire, pendant une période d'éclosion de dix jours, des oeufs de D. v. virgifera LeConte, a montré que les oeufs mâles prédominent les deux premiers jours d'éclosion, que les oeufs des deux sexes, avec des fréquences 0,5/0,5, ont éclos les troisième et quatrième jours, et que les oeufs éclos du cinquième au dixième jour étaient presque tous femelles. Globalement, les oeufs femelles ont éclos en moyenne 2,9 jours plus tard que les oeufs mâles. De plus, la durée du développement post‐embryonnaire des femelles a demandé 1,8 jour en plus. Une éclosion plus tardive et un développement post‐embryonnaire plus long ont entrainé une émergence des femelles en moyenne 4,7 jours après les mâles. La période d'émergence des adultes s'est étalée sur 14 jours; les mâles ayant dominé pendant les 5 premiers jours et les femelles pendant les 9 derniers. Les mâles de D. v. virgifera semblent avoir évolué vers la protandrie en acquerant, tant une diapause post‐embryonnaire que des Stades de développements larvaire et nymphal plus brefs.

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Adult Emergence, Ovarian Development, and Oviposition Sequence of the Western Corn Root worm in Nebraska12

Cited by 22 publications

References 0 publications

Assessing Risk of Resistance to Aerial Applications of Methyl-Parathion in Western Corn Rootworm (Coleoptera: Chrysomelidae)

Assessing Risk of Resistance to Aerial Applications of Methyl-Parathion in Western Corn Rootworm (Coleoptera: Chrysomelidae)

Validation of a nested error component model to estimate damage caused by corn rootworm larvae

The contribution of prehatch and posthatch development to protandry in the chrysomelid, Diabrotica virgifera virgifera

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