An Object-Oriented, Process-Based Model of Bacillus thuringiensis Efficacy Against the Gypsy Moth, Lymantria dispar

2006 ◽  
Author(s):  
Jacques Régnière ◽  
Kees van Frankenhuyzen
Keyword(s):  
Bacillus Thuringiensis ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Object Oriented

scholarly journals Efficacy and speed of action of selected plant protection products on Lymantria dispar in laboratory conditions

2017 ◽  
Vol 18 ◽  
pp. 62 ◽  
Author(s):  
Z.D. Zartaloudis ◽  
M.D. Kalapanida ◽  
E.I. Navrozidis
Keyword(s):  
Bacillus Thuringiensis ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Plant Protection ◽  
Plant Protection Products ◽  
The Other ◽  
Larval Instars ◽  
Laboratory Conditions ◽  
Bacillus Thuringiensis Subsp

In this study some selected insecticides were evaluated for their effect on gypsy moth Lymantria dispar L., (Lepidoptera: Lymantriidae) under laboratory conditions. Diflubenzuron, methoxyfenozide, triflumuron, fenoxycarb, fenoxycarb + lufenuron, Bacillus thuringiensis 50% subsp. kurstaki + Bacillus thuringiensis 50% subsp. aizawai, Bacillus thuringiensis subsp. aizawai and spinosad were used in the recommended concentration, against the 1st, 2nd, 3rd and 4th larval instars of L. dispar. The effectiveness of the above insecticides as well as the speed of action (LTime50 and LTime90) expressed in days, were examined in detail. Spinosad and methoxyfenozide presents a relatively higher speed of action in relation to the other insecticides. LTime50 of spinosad and methoxyfenozide did not differ significantly among the first three larval instars and ranged from 0 to 0.61 and 1.13 to 1.74 days, respectively. Regarding IGRs, the mixture (fenoxycarb + lufenuron) and triflumuron were the most effective in relation to the other IGRs tested. Moreover, Bacillus thuringiensis toxins were effective only against the first two larval instars.

scholarly journals Transcriptome of the Lymantria dispar (Gypsy Moth) Larval Midgut in Response to Infection by Bacillus thuringiensis

PLoS ONE ◽  
2013 ◽  
Vol 8 (5) ◽  
pp. e61190 ◽  
Author(s):  
Michael E. Sparks ◽  
Michael B. Blackburn ◽  
Daniel Kuhar ◽  
Dawn E. Gundersen-Rindal
Keyword(s):  
Bacillus Thuringiensis ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Larval Midgut

scholarly journals Antifeedant effect of NeemAzal-T/S on the caterpillars of Lymantria dispar L..

1970 ◽  
Vol 63 ◽  
Author(s):  
C. G. Fora ◽  
K. F. Lauer ◽  
Corina Alina Fora
Keyword(s):  
Bacillus Thuringiensis ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Deciduous Forests ◽  
Active Complex ◽  
Antifeedant Effect ◽  
Laboratory Trial ◽  
Azadirachtin A

The objective of laboratory trial presented in this paper were to establish in what measure the NeemAzal-T/S (1% azadirachtin A) insecticide has effect on feeding of Lymantria dispar caterpillars, when it is applied as emulsion of 5%, 10%, 20% and 20% emulsion mixed with 0.1% raps oil or with 1% Bacillus thuringiensis var. aizawai. Antifeedand effect was evident after 72 hours of feeding whit treated leafs, moment which marked by entering of many caterpillars in lethargic state. The antifeedant index (AFI) increased (0.59-0.98) in the same time with increasing concentration of NeemAzal emulsion, and being accentuated by raps oil and Bta added in emulsion. If the application of these emulsions contributes at decreasing of leaf feeding with 74.3-99.3%, we can affirm that the azadirachtin, the active complex of the insecticide, can be utilized in the aim of deciduous forests protection against the gypsy moth.

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