Density-Dependent Suppression of Experimentally Created Gypsy Moth, Lymantria dispar (Lepidoptera: Lymantriidae), Populations by Natural Enemies

10.2307/5169 ◽  
1990 ◽  
Vol 59 (1) ◽  
pp. 213 ◽  
Author(s):  
J. R. Gould ◽  
J. S. Elkinton ◽  
W. E. Wallner
Keyword(s):  
Gypsy Moth ◽  
Natural Enemies ◽  
Lymantria Dispar ◽  
Density Dependent

scholarly journals Effects of Rearing Density on Developmental Traits of Two Different Biotypes of the Gypsy Moth, Lymantria Dispar L., from China and the USA

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 175
Author(s):  
Yiming Wang ◽  
Robert L. Harrison ◽  
Juan Shi
Keyword(s):  
Larval Development ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Density Variation ◽  
Larval Population ◽  
Density Dependent ◽  
Asian Gypsy Moth ◽  
The Usa ◽  
Rearing Density ◽  
Different Populations

The life-history traits of the gypsy moth, Lymantria dispar L. (Lepidoptera: Erebidae), have been observed to vary with larval population density, which can increase significantly during an outbreak of this pest. Laboratory studies on density-dependent variation in gypsy moth development have focused on single populations and were limited to comparing solitary larvae with groups of larvae reared at a single density. To evaluate how density-dependent impacts on development vary with different populations and subspecies of L. dispar, we compared the effects of rearing larvae of a European gypsy moth (L. dispar dispar L.) population from Connecticut, USA; and larvae of two populations of the Asian gypsy moth (L. dispar asiatica Vnukovskij) from Guizhou and Hebei provinces in China. Larvae were reared on an artificial diet at densities of one, three, five, seven, and nine larvae per 115 mL container, and the duration of larval development, percentage of surviving larvae, and the rates of pupation and emergence were measured at each density. A two-tailed response to density variation with values falling away on both sides from a peak or climbing from a base was observed for all three populations tested, with the most rapid larval development and the highest values of survival, pupation, and emergence observed at a density of five larvae/container. Although differences in larval development time, survival, pupation and emergence were observed among the different populations under the conditions of our study, our findings indicate that density-dependent effects on the development of different gypsy moth subspecies and populations follow the same trends.

scholarly journals Gypsy moth, Lymantria dispar (L.), and its natural enemies in the forests of Central Serbia

2012 ◽  
pp. 133-147
Author(s):  
Mara Tabaković-Tošić
Keyword(s):  
Gypsy Moth ◽  
Natural Enemies ◽  
Lymantria Dispar ◽  
Dominant Role ◽  
Larval Instar ◽  
Entomophaga Maimaiga ◽  
Nucleopolyhedrosis Virus

In central Serbia, a total of 88 species which are natural enemies of the gypsy moth, i.e. 23 predators, 49 parasitoid insects and 10 saprophagous insects, and 6 pathogens, has been reported. The most abundant of them are the insects which attack the gypsy moth in the larval instar (41 species). Regarding the number of the species, the representatives of the Hymenoptera (14 species from Ichneumonidae family and 11 species from Braconidae family) and Diptera orders (12 species from Tachinidae family and 8 species from Sarcophagidae family) are most frequent. Regarding the predators of the gypsy moth, Carabidae family, from Coleoptera order, is most frequent. In addition, at some sites Lymantria dispar nucleopolyhedrosis virus and Entomophaga maimaiga had the dominant role in the reduction of the gypsy moth density.

The absolute efficiency of gypsy moth, Lymantria dispar (Lepidoptera: Lymantriidae), milk-carton pheromone traps

1991 ◽  
Vol 81 (1) ◽  
pp. 111-118 ◽  
Author(s):  
R. A. J. Taylor ◽  
M. L. McManus ◽  
C. W. Pitts
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Pheromone Trap ◽  
Pheromone Traps ◽  
Density Dependent ◽  
Gypsy Moths ◽  
Absolute Efficiency ◽  
Suction Traps ◽  
Basic Biology ◽  
The Absolute

AbstractCatches by gypsy moth (Lymantria dispar (Linnaeus)) ‘milk-carton’ pheromone traps with (+)-disparlure were compared with estimates of the absolute aerial density of gypsy moths obtained using a suction trap of known absolute sampling efficiency. The mean number of male L. dispar caught per pheromone trap per day was found to be proportional to the 2/3 power of the suction trap's estimate of aerial density. We infer that the efficiency of the gypsy moth milk-carton pheromone trap is density-dependent, declining as aerial density increases. The significance of the density-dependent efficiency and the mode of action of attractant traps are discussed, and the problems of designing and building suction traps to standardize pheromone traps for other species are also considered. It is concluded that standardization is only possible when some basic biology is known because pheromone trap parameters are specific to the field behaviour of the species.

Stimulation of cyclic AMP formation and nerve electrical activity by octopamine in the terminal abdominal ganglion of the female gypsy moth Lymantria dispar

2006 ◽  
Vol 1071 (1) ◽  
pp. 63-74 ◽  
Author(s):  
Maria C. Olianas ◽  
Paolo Solari ◽  
Luciana Garau ◽  
Anna Liscia ◽  
Roberto Crnjar ◽  
...  
Keyword(s):  
Cyclic Amp ◽  
Electrical Activity ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Abdominal Ganglion ◽  
Stimulation Of

Effects of maternal nutrition and egg provisioning on parameters of larval hatch, survival and dispersal in the gypsy moth, Lymantria dispar L.

Oecologia ◽  
1996 ◽  
Vol 106 (4) ◽  
pp. 470-477 ◽  
Author(s):  
A. L. Diss ◽  
J. G. Kunkel ◽  
M. E. Montgomery ◽  
D. E. Leonard
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Maternal Nutrition ◽  
Egg Provisioning
Sign in / Sign up

Export Citation Format

Share Document