European Corn Borer (Lepidoptera: Pyralidae) Infestations: Predicting Second Generation Egg Masses from Blacklight Trap Captures and Relating Their Abundance to Several Corn Crop Characters

1984 ◽  
Vol 77 (6) ◽  
pp. 1432-1438 ◽  
Author(s):  
David E. Legg ◽  
H. C. Chiang
Keyword(s):  
European Corn Borer ◽  
Second Generation ◽  
Corn Borer ◽  
Egg Masses ◽  
Corn Crop ◽  
Lepidoptera Pyralidae

Scambus pterophori (Ashm.) (Hymenoptera: Ichneumonidae), a New Parasite of the European Corn Borer, Pyrausta nubilalis (Hbn.) (Lepidoptera: Pyralidae), in Canada

1959 ◽  
Vol 91 (2) ◽  
pp. 128-128
Author(s):  
Marcel Hudon
Keyword(s):  
European Corn Borer ◽  
Second Generation ◽  
Petri Dish ◽  
First Record ◽  
Corn Borer ◽  
Lepidoptera Pyralidae ◽  
Pyrausta Nubilalis ◽  
Experimental Plots

In late August, 1957, a parasitized second-generation pupa of Pyrausta nubilalis (Hbn.) was observed in silks of an immature corn ear in the experimental plots at St. Jean. The pupa was incubated at 75°F. in a petri dish, and two weeks later an ichneumonid parasite emerged and was identified by Mr. G. S. Walley, Entomology Division, Ottawa, as Scambus pterophori (Ashm.). Asecond generation of P. nubilalis is very unusual in the St. Jean area. This is apparently the first record of this ichneumonid as a parasite of P. nubilalis in Canada.

Stimulation of Oviposition and Heterosis in Interstrain Crosses of European Corn Borer (Lepidoptera: Pyralidae)

1992 ◽  
Vol 27 (3) ◽  
pp. 239-250
Author(s):  
Clifford B. Keil ◽  
Christopher Tipping
Keyword(s):  
Egg Production ◽  
European Corn Borer ◽  
Random Mating ◽  
Daily Basis ◽  
Pupal Weight ◽  
Corn Borer ◽  
Egg Masses ◽  
Lepidoptera Pyralidae ◽  
Mass Mating ◽  
Stimulation Of

Hybrid matings of two Ostrinia nubilalis (Hübner) (Lepidoptera: Pyralidae) colonies (N and O), established in the laboratory a year apart, demonstrated positive heterosis in the F1 generation as indicated by increases in pupal weight (6%), number of egg masses per female (65%) and number of eggs per female (77%) as compared to intra-colony crosses in mass matings. In contrast, pupation date, an indicator of development time, was intermediate in the hybrids relative to the parental colonies. There was also a 37% increase in the numbers of eggs/female and a 45% increase in egg masses/female in the hybrid parental cross. We investigated this stimulation of oviposition in single female, reciprocal crosses. Oviposition stimulation was directional with the cross of N colony males x O colony females exhibiting significantly higher numbers of total eggs/female and egg masses/female on a daily basis. Colony O females in this cross laid more large egg masses than females in other crosses. Data from individual female crosses demonstrated that egg production in hybrid mass mating experiments was consistent with random mating of males and females from both colonies.

A METHOD OF DETECTING OVIPOSITION IN EUROPEAN CORN BORER MOTHS, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), AND ITS RELATION TO SUBSEQUENT LARVAL DAMAGE TO PEPPERS

1978 ◽  
Vol 110 (5) ◽  
pp. 487-493 ◽  
Author(s):  
W.M. Elliott ◽  
R.J. McClanahan ◽  
J. Founk
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Second Generation ◽  
Linear Equations ◽  
Light Trap ◽  
Yellow Band ◽  
Corn Borer ◽  
Green Pepper ◽  
Lepidoptera Pyralidae

AbstractThe formation of a yellow band inside the stalk of each ovariole was a good indicator that a female European corn borer had laid eggs. The absence of these bands was less reliable as an indicator that no eggs had been laid, probably due to the time taken for the bands to form. The numbers of moths accumulating in a light trap over a week at Harrow, Ontario, and the numbers of females estimated to have laid eggs correlated significantly with the numbers of larvae developing in nearby green pepper plots 3, 4, and 5 weeks later during second generation flights. This enabled linear equations for forecasting pepper damage to be developed, in which the dissection data was more useful than the total moth catch alone.

EFFECTS OF A NATURAL BIVOLTINE STRAIN OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), ON GRAIN CORN YIELDS IN SOUTHWESTERN ONTARIO, 1973–77

1981 ◽  
Vol 113 (7) ◽  
pp. 585-591
Author(s):  
W. H. Foott ◽  
P. R. Timmins
Keyword(s):  
Moisture Content ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
First Generation ◽  
Second Generation ◽  
Yield Losses ◽  
Corn Borer ◽  
Lepidoptera Pyralidae

AbstractA 5-year study of a bivoltine strain of the European corn borer, Ostrinia nubilalis (Hübner), showed that first-generation moths deposited more eggs on early-planted corn, whereas second-generation moths oviposited more frequently on late-planted corn. The second generation was much larger than the first generation and caused the greater reduction in yield, regardless of whether the yields were based on physiological losses or a combination of physiological losses and dropped ears. It was shown that delay of harvest beyond the time that moisture content of the corn was sufficiently low for machine harvesting could result in severe yield losses from broken stalks and dropped ears during autumn storms.

Distribution of European Corn Borer (Lepidoptera: Pyralidae) Egg Masses and Larvae on Sweet Corn in New York

1986 ◽  
Vol 15 (3) ◽  
pp. 501-506 ◽  
Author(s):  
A. M. Shelton ◽  
J. P. Nyrop ◽  
A. Seaman ◽  
R. E. Foster
Keyword(s):  
New York ◽  
European Corn Borer ◽  
Sweet Corn ◽  
Corn Borer ◽  
Egg Masses ◽  
Lepidoptera Pyralidae

Evaluation of a Sequential Egg Mass Sampling System for Predicting Second-Generation Damage by European Corn Borer (Lepidoptera: Pyralidae) in Field Corn in North Carolina

1995 ◽  
Vol 88 (5) ◽  
pp. 1316-1323 ◽  
Author(s):  
Clyde E. Sorenson ◽  
John W. Van Duyn ◽  
George G. Kennedy ◽  
J. R. Bradley ◽  
Craig S. Eckel ◽  
...  
Keyword(s):  
North Carolina ◽  
European Corn Borer ◽  
Second Generation ◽  
Egg Mass ◽  
Sampling System ◽  
Corn Borer ◽  
Field Corn ◽  
Lepidoptera Pyralidae

Evaluation of Tropical and Subtropical Corn Lines for Resistance to Second-Generation European Corn Borer (Lepidoptera: Pyralidae)

1989 ◽  
Vol 82 (4) ◽  
pp. 1245-1250 ◽  
Author(s):  
Soon-Kwon Kim ◽  
W. D. Guthrie ◽  
A. R. Hallauer ◽  
W. A. Russell ◽  
J. L. Brewbaker ◽  
...  
Keyword(s):  
European Corn Borer ◽  
Second Generation ◽  
Corn Borer ◽  
Lepidoptera Pyralidae

scholarly journals Control of Second-Generation European Corn Borer, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 212-212
Author(s):  
John Witkowski ◽  
Jerry Echtenkamp
Keyword(s):  
Experimental Design ◽  
Analysis Of Variance ◽  
European Corn Borer ◽  
Second Generation ◽  
Middle Portion ◽  
Corn Borer ◽  
Egg Masses ◽  
Dixon County ◽  
Paper Disc

Abstract Foliar treatments of registered and non-registered insecticides for second-generation European corn borer control were applied to irrigated corn plots in Dixon County, NE on 12 Aug. Liquid-formulated insecticides were applied with a Hahn Hi-Boy calibrated to deliver 17 gpa at 30 psi. Four d prior to application, 6 black-headed egg masses on paper disc were pinned to the middle portion of 10 marked com plants in each replicate. Experimental design was RCB with 4 replications. On 25 Sep, the infested plants were dissected from tassel to ground, examined and the number of corn borer larvae recorded. Results were analyzed using analysis of variance procedures. Treatment means were separated using LSD procedures.

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