Phenotypic Effects of PBAN RNAi Using Oral Delivery of dsRNA to Corn Earworm (Lepidoptera: Noctuidae) and Tobacco Budworm Larvae

2018 ◽  
Vol 112 (1) ◽  
pp. 434-439 ◽  
Author(s):  
Man-Yeon Choi ◽  
Robert K Vander Meer
Keyword(s):  
Oral Delivery ◽  
Corn Earworm ◽  
Tobacco Budworm ◽  
Lepidoptera Noctuidae

Bionomics of the Fall Armyworm (Lepidoptera: Noctuidae) and Its Ectoparasitic Nematode, Noctuidonema guyanense, in South Georgia

1996 ◽  
Vol 31 (2) ◽  
pp. 209-217
Author(s):  
C. E. Rogers ◽  
O. G. Marti ◽  
L. D. Chandler ◽  
A. M. Simmons
Keyword(s):  
Spodoptera Frugiperda ◽  
Heliothis Virescens ◽  
Helicoverpa Zea ◽  
Fall Armyworm ◽  
Corn Earworm ◽  
Cotton Bollworm ◽  
Tobacco Budworm ◽  
Beet Armyworm ◽  
South Georgia ◽  
Lepidoptera Noctuidae

The fall armyworm, Spodoptera frugiperda (J. E. Smith), is a perennial immigrant pest of several crops in south Georgia. Moths of S. frugiperda commonly are infested by an ectoparasitic nematode, Noctuidonema guyanense Remillet and Silvain in the Southeast. The seasonal chronology and natural association of these species are reported for Tift Co. from 1988 to 1994. Seasonal influxes of non-infested moths usually arrive in late April and dissipate in early November. Seasonal influxes of infested male moths follow the initial immigrants by 4 to 6 wks and disappear in the fall from 1 to 2 mos earlier than the general moth populations. Feral male moths that are moderately worn and infested by N. guyanense weigh less than moderately worn, non-infested males. Noctuidonema guyanense infests moths of several species of noctuids, but it has not been found on the cotton bollworm/corn earworm [Helicoverpa zea (Boddie)], tobacco budworm [Heliothis virescens (Fab.)], or beet armyworm [S. exigua (Hubner)].

scholarly journals Comparison of in Vitro and in Planta Toxicity of Vip3A for Lepidopteran Herbivores

2020 ◽  
Vol 113 (6) ◽  
pp. 2959-2971
Author(s):  
Muhammad Hassaan Khan ◽  
Georg Jander ◽  
Zahid Mukhtar ◽  
Muhammad Arshad ◽  
Muhammad Sarwar ◽  
...  
Keyword(s):  
Transgenic Plants ◽  
Transgenic Tobacco ◽  
Pest Control ◽  
Artificial Diet ◽  
Corn Earworm ◽  
Plant Production ◽  
Tobacco Budworm ◽  
Beet Armyworm ◽  
Dependent Manner ◽  
Lepidoptera Noctuidae

Abstract Agricultural pest infestation is as old as domestication of food crops and contributes a major share to the cost of crop production. In a transgenic pest control approach, plant production of Vip3A, an insecticidal protein from Bacillus thuringiensis, is effective against lepidopteran pests. A synthetic Vip3A gene was evaluated for efficacy against Spodoptera litura Fabricius (Lepidoptera: Noctuidae; cotton leafworm), Spodoptera exigua Hübner (Lepidoptera: Noctuidae; beet armyworm), Spodoptera frugiperda Smith (Lepidoptera: Noctuidae; fall armyworm), Helicoverpa armigera Hübner (Lepidoptera: Noctuidae; cotton bollworm), Helicoverpa zea Boddie (Lepidoptera: Noctuidae; corn earworm), Heliothis virescens Fabricius (Lepidoptera: Noctuidae; tobacco budworm), and Manduca sexta L. (Lepidoptera: Sphingidae; tobacco hornworm) in tobacco. In artificial diet assays, the concentration required to achieve 50% mortality was highest for H. zea followed by H. virescens > S. exigua > H. armigera > M. sexta > S. frugiperda > S. litura. By contrast, in bioassays with detached leaves from Vip3A transgenic tobacco, the time until 50% lethality was M. sexta > H. virescens > S. litura > H. zea > H. armigera > S. exigua. There was no significant correlation between the artificial diet and transgenic plant bioassay results. Notably, the two insect species that are best-adapted for growth on tobacco, M. sexta and H. virescens, showed the greatest time to 50% mortality on Vip3A-transgenic tobacco. Together, our results suggest that artificial diet assays may be a poor predictor of Vip3A efficacy in transgenic plants, lepidopteran species vary in their sensitivity to Vip3A in diet-dependent manner, and host plant adaptation of the targeted herbivores should be considered when designing transgenic plants for pest control.

Attraction of Heliothis belladonna (Henry and Edwards) to the Sex Pheromone of the Corn Earworm Moth, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae)

2006 ◽  
Vol 79 (4) ◽  
pp. 303-308 ◽  
Author(s):  
Peter J. Landolt ◽  
Constance L. Smithhisler ◽  
Richard S. Zack ◽  
Leonardo Camelo
Keyword(s):  
Sex Pheromone ◽  
Helicoverpa Zea ◽  
Corn Earworm ◽  
Lepidoptera Noctuidae
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