Evaluation of a Management Model for Second-Generation European Corn Borer (Lepidoptera: Pyralidae) for Use in Kansas

1988 ◽  
Vol 81 (1) ◽  
pp. 335-343 ◽  
Author(s):  
D. D. Calvin ◽  
S. M. Welch ◽  
F. L. Poston
Keyword(s):  
European Corn Borer ◽  
Second Generation ◽  
Management Model ◽  
Corn Borer ◽  
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.

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.

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

Genetic Resistance of Tropical Corn Inbreds to Second-Generation European Corn Borer (Lepidoptera: Pyralidae)

1989 ◽  
Vol 82 (4) ◽  
pp. 1207-1211 ◽  
Author(s):  
Soon-Kwon Kim ◽  
A. R. Hallauer ◽  
W. D. Guthrie ◽  
D. Barry ◽  
K. R. Lamkey ◽  
...  
Keyword(s):  
European Corn Borer ◽  
Second Generation ◽  
Genetic Resistance ◽  
Corn Borer ◽  
Lepidoptera Pyralidae

POSTMATING AGE ESTIMATES FOR FEMALE EUROPEAN CORN BORER MOTHS, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), USING TIME-RELATED CHANGES IN SPERMATOPHORES

1979 ◽  
Vol 111 (12) ◽  
pp. 1325-1335 ◽  
Author(s):  
W. M. Elliott ◽  
V. A. Dirks
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Second Generation ◽  
Light Trap ◽  
Age Groups ◽  
Volume Depletion ◽  
Corn Borer ◽  
Corn Borers ◽  
Lepidoptera Pyralidae ◽  
Modal Values

AbstractThe spermatophores in mated female European corn borers, Ostrinia nubilalis (Hübner), were shown to lose volume (depletion), change colour, and retract their spiral stalks over a period of about 7 days in such a way that postmating age could be estimated from their appearance. Colour changes and stalk retraction occurred more slowly in females that laid fertile eggs than in those that did not, but depletion occurred at the same rate. The average postmating age was estimated as 5.2, 6.3, 3.9, and 2.6 days for small light trap catches of first generation females in 1974, 1975, 1976, and 1977 and 4.4, 3.9, and 3.2 days for larger catches of second generation females in 1974, 1975, and 1977. Catches did not show decreasing numbers in successive age groups but tended to show modal values at < 1 day and at 4–6 days with only 1% living > 7 days. Redistribution of the moths from the date of capture back to the date of mating tended to give a unimodal curve of numbers on time in the 1975 second generation but not in 1974 or 1977. The unimodal curve of redistributed moths in 1975 was significantly different from a normal distribution. The redistribution showed that 58% of the moths mated within the heat unit interval when the second generation was expected to emerge, whereas only 38% of the actual catches occurred in this interval. Redistribution also showed that mating probably occurred even on cold nights when few moths were trapped, and conversely that on some warm nights with large catches most of the moths had mated on earlier nights.

Selection for Resistance to the Second Generation of the European Corn Borer (Lepidoptera: Pyralidae) in Maize1

1983 ◽  
Vol 76 (2) ◽  
pp. 392-394 ◽  
Author(s):  
Dean Barry ◽  
M. S. Zuber ◽  
A. Q. Antonio ◽  
L. L. Darrah
Keyword(s):  
European Corn Borer ◽  
Second Generation ◽  
Corn Borer ◽  
Lepidoptera Pyralidae ◽  
Selection For
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