LABORATORY ANALYSIS OF FIVE HOST PLANT SOURCES ON LIFE CAPACITIES OF GYPSY MOTH, LYMANTRIA DISPAR (LEP.: LYMANTRIIDAE) AND EVALUATION OF THE RESULTS IN FIELD CONDITIONS IN YASUJ AREA OF IRAN

2012 ◽  
pp. 657-663
Author(s):  
K. Saeidi ◽  
M. Hosseini Farahi
Keyword(s):  
Host Plant ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Laboratory Analysis ◽  
Field Conditions ◽  
Plant Sources

scholarly journals Development of gypsy moth (Lymantria dispar L) on the foliage of Quercus cerris L., Q. Petraea (matt) Liebl. and Q. Robur L. in the controlled conditions

2007 ◽  
pp. 55-67 ◽  
Author(s):  
Slobodan Milanovic
Keyword(s):  
Relative Humidity ◽  
Host Plant ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Environmental Conditions ◽  
Quercus Robur ◽  
Quercus Petraea ◽  
The Other ◽  
Study Results ◽  
Quercus Cerris

The development of Gypsy moth (Lymantria dispar L) was monitored in laboratory conditions, on the foliage of the species Quercus cerris L. Quercus petraea (Matt) Liebl. and Quercus robur L. The experiment was established in the controlled environmental conditions, at the temperature of 25?C, photoperiod 14:10 (day: night) and relative humidity 70%. The objective of the research was to determine the suitability of the study host plant species for gypsy moth development. The study results show that Gypsy moth caterpillars cultivated on Q. petraea foliage had a lower survival, higher number of moultings, longer preadult development and lower fecundity, which makes this species less suitable compared to the other two. Gypsy moth caterpillars cultivated on Q. cerris foliage had the highest survival degree the lowest number of moultings, the shortest preadult development and the highest fecundity, which makes this species the most favourable for gypsy moth development. Q. robur was between the former two species in this respect.

GROWTH AND DEVELOPMENT OF COMPSILURA CONCINNATA (MEIGAN) (DIPTERA: TACHINIDAE) PARASITIZING GYPSY MOTH LARVAE FEEDING ON TANNIN DIETS

1991 ◽  
Vol 123 (5) ◽  
pp. 1047-1055 ◽  
Author(s):  
R.S. Bourchier
Keyword(s):  
Host Plant ◽  
Tannic Acid ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Growth And Development ◽  
Positive Relationship ◽  
Peritrophic Membrane ◽  
Host Quality ◽  
Potential Fecundity ◽  
Compsilura Concinnata

AbstractAll larval instars of Compsilura concinnata (Meigan) (Diptera: Tachinidae) develop in the midgut of the gypsy moth [Lymantria dispar (L.) (Lepidoptera: Lymantriidae)] between the peritrophic membrane and gut wall. Parasitoid larvae placed artificially in the host haemocoel quickly moved to this characteristic position. There was a positive relationship between parasitoid size, as measured by the weight of the puparium, and the potential fecundity of female flies. When C. concinnata parasitized third-instar larval hosts, there were fewer successful multiple emergences, parasitoid larvae took longer to develop, and puparia were significantly smaller than those of parasitoids attacking fifth-instar hosts.Gypsy moth larvae grew more slowly on diets supplemented with 0.5 and 2.5% tannic acid than on non-supplemented diets. Similarly, C. concinnata females were smaller (with associated reduction in fecundity) when emerging from hosts feeding on the tannin diets than when hosts were feeding on control diets. The effect of tannic acid on the parasitoid was indirect and was the result of a reduction in host quality on the tannin diets. Reduction in parasitoid fecundity associated with tritropic interactions (among the host plant, the gypsy moth, and the parasitoid) may provide a possible explanation for the irregular impact of C. concinnata on gypsy moth populations.

scholarly journals Effects of host switching on gypsy moth (Lymantria dispar (L.)) under field conditions

Oecologia ◽  
1994 ◽  
Vol 97 (2) ◽  
pp. 143-157 ◽  
Author(s):  
J. L. Stoyenoff ◽  
J. A. Witter ◽  
M. E. Montgomery ◽  
C. A. Chilcote
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Field Conditions ◽  
Host Switching

HOST-PLANT PREFERENCES AND THEIR INDUCTION IN LARVAE OF THE GYPSY MOTH, LYMANTRIA DISPAR

1979 ◽  
Vol 26 (2) ◽  
pp. 180-188 ◽  
Author(s):  
P. BARBOSA ◽  
J. GREENBLATT ◽  
W. WITHERS ◽  
W. CRANSHAW ◽  
E. A. HARRINGTON
Keyword(s):  
Host Plant ◽  
Gypsy Moth ◽  
Lymantria Dispar

scholarly journals Host plant effect on the susceptibility of gypsy moth caterpillars to insecticides

2002 ◽  
pp. 69-78
Author(s):  
Slobodan Milanovic
Keyword(s):  
Host Plant ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Abiotic Factors ◽  
Pedunculate Oak ◽  
Moth Population ◽  
Study Results ◽  
Turkey Oak ◽  
Host Plant Effect ◽  
Oak Leaves

Gypsy moth (Lymantria dispar L) is the most significant pest of broadleaf forests. The dynamics of gypsy moth population depends on several biotic and abiotic factors, but it is also highly dependent on the quality of consumed food. The gypsy moth control increasingly relies on the biological preparations based on Bacillus thuringiensis subspec. kurstaki (Btk) and Lymantria dispar Nuclear Poliedrosis virus (NPV). Chemical preparations are still applied although more rarely, the pyrethroids which include also lambda-cyhalothrin This paper presents the study results of the effect of host plant on gypsy moth caterpillar (Lymantria dispar L) susceptibility to lambda cihalotrine insecticide, by which the study oak leaves were contaminated. The study results show the lowest mortality of the caterpillars fed on contaminated leaves of Turkey oak (17.5%), then pedunculate oak (86.1%), and the highest mortality of caterpillars fed on sessile oak leaves (92%). The rate of the gypsy moth caterpillar development depends on the host plant Susceptibility of the gypsy moth caterpillars to the above preparation depends on the host plant The knowledge of the effect of host plant on insecticide efficiency in gypsy moth suppression would render insecticide utilisation optimal.

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