Preparation of (Z)-alkenes, ketones, and alkynes via trialkyltin chloride induced intramolecular transfer reaction of lithium 1-alkynyltrialkylborates. Stereoselective synthesis of the sex pheromones of the Douglas fir tussock moth, the gypsy moth, and the wild silkmoth Antheraea polyphemus

1984 ◽  
Vol 49 (26) ◽  
pp. 5175-5178 ◽  
Author(s):  
Kung K. Wang ◽  
Kai Hsuan Chu
Keyword(s):  
Gypsy Moth ◽  
Sex Pheromones ◽  
Transfer Reaction ◽  
Stereoselective Synthesis ◽  
Douglas Fir ◽  
Antheraea Polyphemus ◽  
Tussock Moth ◽  
Intramolecular Transfer

scholarly journals Synthesis of disparlure and monachalure enantiomers from 2,3-butanediacetals

2020 ◽  
Vol 16 ◽  
pp. 616-620
Author(s):  
Adam Drop ◽  
Hubert Wojtasek ◽  
Bożena Frąckowiak-Wojtasek
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Sex Pheromones ◽  
Stereoselective Synthesis ◽  
Starting Material ◽  
Lymantria Monacha ◽  
Nun Moth

2,3-Butanediacetal derivatives were used for the stereoselective synthesis of unsymmetrically substituted cis-epoxides. The procedure was applied for the preparation of both enantiomers of disparlure and monachalure, the components of the sex pheromones of the gypsy moth (Lymantria dispar) and the nun moth (Lymantria monacha) using methyl (2S,3R,5R,6R)-3-ethylsulfanylcarbonyl-5,6-dimethoxy-5,6-dimethyl-1,4-dioxane-2-carboxylate as the starting material.

EFFECT OF MECHANICAL PROCESSING AND LONG-TERM STORAGE ON BIOLOGICAL ACTIVITY OF VIRTUSS

1993 ◽  
Vol 125 (5) ◽  
pp. 975-977 ◽  
Author(s):  
W.J. Kaupp ◽  
P.M. Ebling
Keyword(s):  
Biological Activity ◽  
Gypsy Moth ◽  
The United States ◽  
Douglas Fir ◽  
Mechanical Processing ◽  
Tussock Moth ◽  
Long Term Storage ◽  
Freeze Dried ◽  
Term Storage

The effect of long-term storage on the activity of biological control products, particularly those containing nuclear polyhedrosis viruses (NPVs), has not been extensively studied. Most investigations involving viral insecticides have dealt with their thermal stability (Stuermer and Bullock 1968; Dulmage and Burgerjohn 1977; McLeod et al. 1977; Ignoffo and Couch 1981). Freeze-dried and air-dried powdered preparations of gypsy moth, Lymantria dispar L., NPV show little reduction in potency after storage at 4°C for 10 months and 3 months, respectively. Consequently, it was recommended that gypsy moth NPV be stored in either state at 4°C to maintain acceptable activity (Lewis and Rollinson 1978). TM BioControl-1, the viral product for control of the Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), registered and used in the United States, has been shown to have a shelf life of 5 years if stored in a cool, dry place (Martignoni 1978). Virtuss is the NPV product manufactured in Canada, in the whitemarked tussock moth, O. leucostigma (J.E. Smith), since 1975 by the Forest Pest Management Institute, Forestry Canada, Sault Ste. Marie, Ont., for the control of the Douglas-fir tussock moth. It is routinely stored at 4°C in anticipation of tussock moth outbreaks and has been successfully used in the control of outbreaks of Douglas-fir tussock moth in Canada (Otvos et al. 1987). If these, or any other viral products are to be successful commercially, more information is required on the effect of storage on viral potency. Similarly, little information is known of the cumulative effects of the mechanical processes of lyophilization and milling on the biological activity of viral products. This note reports on the effects of mechanical processing and storage on Virtuss. Our results show that, although there is no immediate effect of mechanical processing, there can be substantial loss of biological activity of this product after 2 years of storage.

Surveying for Douglas-Fir Tussock Moth with Pheromone

1977 ◽  
Vol 23 (3) ◽  
pp. 172-174
Author(s):  
R. L. Livingston ◽  
G. Daterman
Keyword(s):  
Douglas Fir ◽  
Tussock Moth

scholarly journals Impact of Biochar on Douglas-Fir Tussock Moth (Orgyia pseudotsugata Lepidoptera: Erebidae) Larvae Reared on Synthetic Die

Insects ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1065
Author(s):  
Stacey Rice-Marshall ◽  
Stephen P. Cook ◽  
John Randall
Keyword(s):  
Weight Gain ◽  
Larval Mortality ◽  
Douglas Fir ◽  
High Concentration ◽  
Larval Weight ◽  
Synthetic Diet ◽  
Tussock Moth ◽  
Orgyia Pseudotsugata ◽  
Compensatory Feeding ◽  
Significant Difference

The use of biochar as a soil amendment in forest ecosystems can be beneficial in the restoration of degraded soils. Forest insects such as the Douglas-fir tussock moth, Orgyia pseudotsugata (McDonnough) (Lepidoptera: Erebidae), may be exposed to biochar when the material is applied. Two experiments were conducted using biochar either (1) applied to the surface of the diet at three rates (0, 5, and 10 mg) or (2) incorporated into synthetic diet at four rates (0, 10, 20, and 40% volume/volume). The objective of both experiments was to determine if biochar on the surface or incorporated into a synthetic diet affected development and survival of O. pseudotsugata larvae. In both experiments, there was a significant decrease in estimated time to larval mortality in all biochar treatments compared to untreated controls. In the surface-applied biochar experiment, there was a significant difference in larval weight gain at day 12 between the control and 10 mg biochar treatments. In the experiment with biochar incorporated into the diet, mean larval weight at day 12 was highest in the low (10%) biochar treatment compared to all other treatments, although weight gain was only significantly different between the low- and high-concentration (40%) biochar treatments. Our results suggest that larvae, feeding on a low amount of biochar in the synthetic diet, may respond by engaging in compensatory feeding behavior. Fewer surviving larvae in the biochar treatment groups may contribute to the lack of significance found in the comparison of weight gain at day 24 in each experiment.

Sign in / Sign up

Export Citation Format

Share Document