Toxicity of Isomers of Fenvalerate and Fluvalinate Against Boll Weevil (Coleoptera: Curculionidae) and Tobacco Budworm (Lepidoptera: Noctuidae) in the Laboratory and Heliothis Species (Lepidoptera: Noctuidae) in Field Tests

1989 ◽  
Vol 82 (1) ◽  
pp. 52-57 ◽  
Author(s):  
D. A. Wolfenbarger ◽  
J. A. Harding ◽  
D. F. Clower ◽  
G. A. Herzog ◽  
J. R. Bradley
Keyword(s):  
Field Tests ◽  
Boll Weevil ◽  
Tobacco Budworm ◽  
Lepidoptera Noctuidae

POSTEMBRYONIC GROWTH AND DEVELOPMENT OF F1 AND F2 TOBACCO BUDWORMS (LEPIDOPTERA: NOCTUIDAE) FROM PARTIALLY STERILE MALES

1972 ◽  
Vol 104 (2) ◽  
pp. 165-172 ◽  
Author(s):  
F. I. Proshold ◽  
J. A. Bartell
Keyword(s):  
Heliothis Virescens ◽  
Growth And Development ◽  
Second Generation ◽  
Field Tests ◽  
Tobacco Budworm ◽  
Larval Instars ◽  
Continuous Release ◽  
Delayed Development ◽  
Lepidoptera Noctuidae ◽  
Inherited Sterility

AbstractTobacco budworms, Heliothis virescens (F.), with inherited sterility caused by irradiation of the male parent were smaller than progeny from normal parents and developed more slowly throughout the larval and pupal periods. In the second generation the population segregated into two groups, those with normal and those with delayed development. Also, when the P1 male received 15.0 krad, 8% of the F1 larvae had more than the normal five instars. Moreover, when those F1 progeny that had only five larval instars were outcrossed to normal moths, this tendency for supernumerary molts increased nearly 3-fold. The slower development of progeny of treated moths would have to be considered in field tests made to evaluate the effect of inherited sterility on the tobacco budworm. However, with continuous release of irradiated males, the delayed development or smaller size of the progeny should not lessen the possibility that this method could successfully suppress field populations.

Registration of Five Cotton Germplasm Lines with Resistance to Bollworm, Tobacco Budworm, and Boll Weevil

Crop Science ◽  
1990 ◽  
Vol 30 (1) ◽  
pp. 235-236 ◽  
Author(s):  
T. W. Culp ◽  
C. C. Green ◽  
B. U. Kittrell
Keyword(s):  
Boll Weevil ◽  
Tobacco Budworm

scholarly journals Attraction of Tobacco Budworm Moths (Lepidoptera: Noctuidae) to Jaggery, a Palm Sugar Extract

1997 ◽  
Vol 80 (3) ◽  
pp. 402 ◽  
Author(s):  
P. J. Landolt ◽  
E. R. Mitchell
Keyword(s):  
Tobacco Budworm ◽  
Palm Sugar ◽  
Lepidoptera Noctuidae

Effects of the sap of the common oleander Nerium indicum (Apocyanaceae) on male fertility and spermatogenesis in the oriental tobacco budworm Helicoverpa assulta (Lepidoptera, Noctuidae)

2001 ◽  
Vol 204 (22) ◽  
pp. 3935-3942 ◽  
Author(s):  
Seong Eun Jeong ◽  
Yun Lee ◽  
Jeong Hee Hwang ◽  
Douglas C. Knipple
Keyword(s):  
Male Fertility ◽  
Chemical Constituents ◽  
Direct Injection ◽  
Arginine Decarboxylase ◽  
Tobacco Budworm ◽  
Polyamine Metabolism ◽  
Helicoverpa Assulta ◽  
Continuous Feeding ◽  
The Common ◽  
Lepidoptera Noctuidae

SUMMARY We investigated the effects of sap of the common oleander Nerium indicum (Apocyanaceae) on male fertility and spermatogenesis in the oriental tobacco budworm Helicoverpa assulta. We found that continuous feeding of oleander sap during the larval period significantly affects fertility in males but not in females. This effect was also induced by direct injection of oleander sap into the hemocoel of 2-day-old pupae. Histological analyses of developing testes following oleander injection revealed a developmental delay and progressively more severe morphological abnormalities in the later stages of development. The effects of oleander sap on spermatogenesis in H. assulta were associated with greatly reduced levels of the two major polyamines, spermidine and spermine, in testis compared with saline-injected controls. In contrast, levels of putrescine, which is a precursor of both spermidine and spermine, and the activities of the enzymes ornithine decarboxylase and arginine decarboxylase, which are involved in the biosynthesis of putrescine, were initially elevated following oleander injection, but subsequently failed to undergo the induction that normally occurs during late pupal development. The effects of oleander sap on spermidine and spermine levels could be the result of direct inhibition by chemical constituents of the oleander sap of one of the enzymes used in common in the conversions of putrescine to spermidine and spermidine to spermine; alternatively, these effects on polyamine metabolism could be secondary to the disruption of a more fundamental process in the developmental program guiding spermatogenesis in H. assulta.

FIELD AND LABORATORY EVALUATION OF A SEX ATTRACTANT FOR THE WHITE CUTWORM, EUXOA SCANDENS (LEPIDOPTERA: NOCTUIDAE)

1982 ◽  
Vol 114 (11) ◽  
pp. 1101-1103
Author(s):  
D. G. R. McLeod ◽  
T. Nagai ◽  
A. N. Starratt ◽  
C. Bonenfant ◽  
E. W. Rud ◽  
...  
Keyword(s):  
Sex Attractant ◽  
Adult Population ◽  
Field Tests ◽  
Laboratory Evaluation ◽  
Vegetable Crops ◽  
Female Sex Pheromone ◽  
Sex Attractants ◽  
Monitoring Method ◽  
Lepidoptera Noctuidae ◽  
Insecticide Control

The white cutworm, Euxoa scandens (Riley), is a sporadic pest of tobacco in Quebec (Mailloux and Desrosiers 1978), asparagus in Michigan (A. L. Wells, pers. comm.), and other vegetable crops grown in light sandy soils (Beirne 1971). The immature larvae overwinter and cause serious damage when they resume feeding in the spring (Hudson and Wood 1930). Moths emerge and oviposit from late June until late July (McLeod and Dupré 1981). An efficient monitoring method utilizing the female sex pheromone would be an important aid in estimating the size and distribution of the adult population and would help in planning insecticide control. We report here some results of electroantennogram screening of potential sex attractants and the results of field tests of the most active of these.

Sign in / Sign up

Export Citation Format

Share Document