Potential of the Combined Use of Inherited Sterility and a Parasitoid, Archytas marmoratus (Diptera: Tachinidae), for Managing Helicoverpa zea (Lepidoptera: Noctuidae)

1994 ◽  
Vol 23 (1) ◽  
pp. 41-46 ◽  
Author(s):  
C. M. Mannion ◽  
J. E. Carpenter ◽  
H. R. Gross
Keyword(s):  
Helicoverpa Zea ◽  
Combined Use ◽  
Lepidoptera Noctuidae ◽  
Inherited Sterility

Effects of Inherited Sterility and Insect Resistant Dent-Corn Silks on Helicoverpa zea (Lepidoptera: Noctuidae) Development

1992 ◽  
Vol 27 (4) ◽  
pp. 413-420 ◽  
Author(s):  
J. E. Carpenter ◽  
B. R. Wiseman
Keyword(s):  
Helicoverpa Zea ◽  
Control Strategies ◽  
Developmental Time ◽  
Corn Earworm ◽  
Normal Female ◽  
Dent Corn ◽  
The Mean ◽  
Lepidoptera Noctuidae ◽  
Inherited Sterility ◽  
Meridic Diet

Male and female corn earworm, Helicoverpa zea (Boddie), adults were exposed to a substerilizing dose (10 krads) of gamma radiation after which their progeny were reared on a meridic diet containing selected concentrations of dry silk collected from resistant dent corn genotypes. Significant interactions were observed between the developmental time of progeny from irradiated females and progeny from normal parents and meridic diets with increasing degrees of resistance. A significant interaction also was observed between the mean larval weights of normal and substerile larvae and diets with increasing degrees of resistance. The 9-d weight of normal larvae was significantly higher than the weight of substerile larvae at the lowest degree of resistance, but differences between the weight of normal and substerile larvae at the highest degree of resistance were not significant. Larvae from irradiated male by normal female crosses were equally competitive with normal larvae for all measured parameters. Data from this study suggest that plant resistance and inherited sterility would be compatible control strategies for the management of H. zea populations.

Compatibility of Nuclear Polyhedrosis Viruses and Inherited Sterility for Control of Corn Earworm and Fall Armyworm (Lepidoptera: Noctuidae)

1997 ◽  
Vol 32 (2) ◽  
pp. 148-153 ◽  
Author(s):  
J. J. Hamm ◽  
J. E. Carpenter
Keyword(s):  
Helicoverpa Zea ◽  
Nuclear Polyhedrosis Virus ◽  
Fall Armyworm ◽  
Corn Earworm ◽  
Management Approach ◽  
Significant Difference ◽  
Polyhedrosis Virus ◽  
Nuclear Polyhedrosis ◽  
Lepidoptera Noctuidae ◽  
Inherited Sterility

Inherited sterility has been proposed as a means of suppressing the populations of the corn earworm, Helicoverpa zea (Boddie), and the fall armyworm, Spodoptera frugiperda (J. E. Smith). If nuclear polyhedrosis viruses could be used to kill larvae, thereby reducing the number of moths in the field populations, fewer moths treated with substerilizing doses of irradiation would need to be released. However, for these two methods to be compatible, the progeny of substerile moths should be no more susceptible to the virus than the progeny of the field populations. The corn earworm nuclear polyhedrosis virus (Elcar™) was bioassayed against corn earworm larvae from untreated moths and larvae from male, female, and male and female moths treated with 100 Gy of irradiation and larvae from male moths treated with 150 Gy of irradiation. The fall armyworm nuclear polyhedrosis virus was bioassayed against fall armyworm larvae from untreated moths and larvae from male moths treated with 100 to 150 Gy of irradiation. There was no significant difference between susceptibility of larvae from untreated moths and larvae from irradiated moths. Thus, the use of nuclear polyhedrosis viruses for control of larvae should be compatible with the release of substerilized moths as part of an integrated pest management approach for area-wide management of the corn earworm and fall armyworm.

scholarly journals Detection and Evolution of Resistance to the Pyrethroid Cypermethrin in Helicoverpa zea (Lepidoptera: Noctuidae) Populations in Texas

2007 ◽  
Vol 36 (5) ◽  
pp. 1174-1188 ◽  
Author(s):  
P. V. Pietrantonio ◽  
T. A. Junek ◽  
R. Parker ◽  
D. Mott ◽  
K. Siders ◽  
...  
Keyword(s):  
Helicoverpa Zea ◽  
Evolution Of Resistance ◽  
Lepidoptera Noctuidae
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