Asian gypsy moth (Lymantria dispar L.) populations: Tolerance of eggs to extreme winter temperatures

2021 ◽  
pp. 103123
Author(s):  
G.G. Ananko ◽  
A.V. Kolosov
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Winter Temperatures ◽  
Asian Gypsy Moth

scholarly journals Gypsy moth genome provides insights into flight capability and virus–host interactions

2019 ◽  
Vol 116 (5) ◽  
pp. 1669-1678 ◽  
Author(s):  
Jing Zhang ◽  
Qian Cong ◽  
Emily A. Rex ◽  
Winnie Hallwachs ◽  
Daniel H. Janzen ◽  
...  
Keyword(s):  
Gene Ontology ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Draft Genome ◽  
Immunological Response ◽  
The United States ◽  
Muscle Adaptation ◽  
Phenotypic Differences ◽  
Plant Foliage ◽  
Asian Gypsy Moth

Since its accidental introduction to Massachusetts in the late 1800s, the European gypsy moth (EGM; Lymantria dispar dispar) has become a major defoliator in North American forests. However, in part because females are flightless, the spread of the EGM across the United States and Canada has been relatively slow over the past 150 years. In contrast, females of the Asian gypsy moth (AGM; Lymantria dispar asiatica) subspecies have fully developed wings and can fly, thereby posing a serious economic threat if populations are established in North America. To explore the genetic determinants of these phenotypic differences, we sequenced and annotated a draft genome of L. dispar and used it to identify genetic variation between EGM and AGM populations. The 865-Mb gypsy moth genome is the largest Lepidoptera genome sequenced to date and encodes ∼13,300 proteins. Gene ontology analyses of EGM and AGM samples revealed divergence between these populations in genes enriched for several gene ontology categories related to muscle adaptation, chemosensory communication, detoxification of food plant foliage, and immunity. These genetic differences likely contribute to variations in flight ability, chemical sensing, and pathogen interactions among EGM and AGM populations. Finally, we use our new genomic and transcriptomic tools to provide insights into genome-wide gene-expression changes of the gypsy moth after viral infection. Characterizing the immunological response of gypsy moths to virus infection may aid in the improvement of virus-based bioinsecticides currently used to control larval populations.

Molecular characterization and functional analysis of USP-1 by RNA interference in the Asian gypsy moth Lymantria dispar

2019 ◽  
Vol 31 (5) ◽  
pp. 1923-1931
Author(s):  
Rongrong Wen ◽  
Qingquan Zhao ◽  
Buyong Wang ◽  
Yan Ma ◽  
Ling Ma
Keyword(s):  
Functional Analysis ◽  
Rna Interference ◽  
Molecular Characterization ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Asian Gypsy Moth

scholarly journals Nocturnal flight activities of the female Asian gypsy moth, Lymantria dispar (Linnaeus) (Lepidoptera: Lymantriidae)

2010 ◽  
Vol 45 (1) ◽  
pp. 121-128 ◽  
Author(s):  
Ren Iwaizumi ◽  
Kenryo Arakawa ◽  
Chiharu Koshio
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Asian Gypsy Moth

scholarly journals Transcriptomic and Metabolomic Analyses to Unravel Responses of Populus Simonii × P. Nigra to attack by Asian Gypsy moth Lymantria Dispar (Lepidoptera: Lymantriidae)

2020 ◽  
Author(s):  
Yuntong LV ◽  
Lili Sun ◽  
Jingjing Yin ◽  
Yanpeng Jia ◽  
Hui Du ◽  
...  
Keyword(s):  
Secondary Metabolism ◽  
Molecular Mechanism ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Herbivorous Insects ◽  
Defensive Response ◽  
Mechanical Wounding ◽  
Populus Simonii ◽  
Asian Gypsy Moth ◽  
Key Genes

Abstract Background: Poplar is frequently attacked by herbivorous insects, including the Asian gypsy moth, Lymantria dispar. Here, we combined metabolomic and transcriptomic analysis to identify key genes and metabolites involved into the molecular mechanism of defensive enhancement against L. dispar herbivory on poplar. Results: The 3666 differentially expressed genes (DEGs, 1,799 up-regulated and 1,867 down-regulated) and 1,171 DEGs (695 up-regulated and 476 down-regulated) were specific in L. dispar herbivory and mechanical wounding, respectively. Moreover, the 9,108 and 7,656 ions were detected while 636 and 531 different ions were obtained using positive (pos) mode and negative (neg) mode, respectively. Among these ions, the 33 and 7 different ions were specific in L. dispar herbivory and mechanical wounding in pos mode while 46 and 4 different ions in L. dispar herbivory and mechanical wounding in neg mode, respectively. The 3,666 specific DEGs in L. dispar herbivory group were classified into phenylpropanoid and flavonoid secondary metabolism pathways by comprehensive networks between transcriptomes and metabolomes. Conclusions: The current findings greatly improve our understanding of the induced defensive response in poplar plants against L. dispar infestation, and will contribute to develop insect-resistance poplar varieties.

scholarly journals Impact of Temperature on Postdiapause and Diapause of the Asian Gypsy Moth,Lymantria dispar asiatica

2014 ◽  
Vol 14 (5) ◽  
pp. 1-9 ◽  
Author(s):  
Jing Wei ◽  
You-Qing Luo ◽  
Juan Shi ◽  
Dei-Peng Wang ◽  
Shao-Wei Shen
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Asian Gypsy Moth

scholarly journals Effects of methoxyfenozide on ecdysone receptor complex expression in larval Asian gypsy moth

2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Shao-ping Wu ◽  
Li-li Sun ◽  
Hua Zhong ◽  
Shan-chun Yan ◽  
Hong-qu Wu ◽  
...  
Keyword(s):  
Growth Regulators ◽  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Receptor Complex ◽  
Ecdysone Receptor ◽  
Insect Growth Regulators ◽  
Transcription Profiles ◽  
Asian Gypsy Moth ◽  
Complex Expression ◽  
Regulate Gene

AbstractAs a target of insect growth regulators, the ecdysone receptor complex binds ecdysone agonists to regulate gene transcription, development, and growth. To understand the response of Lymantria dispar to methoxyfenozide, we studied receptor complex transcription profiles following larval exposure to methoxyfenozide, and observed important variations amongst post-embryonic stages. After the exposure of 2nd and 3rd instar larvae to LC5 and LC20 methoxyfenozide for 72 h, the transcription levels of ecdysone receptor complex genes were mainly upregulated in 2nd instar larvae, but downregulated in 3rd instar larvae. These results provide expression characteristics of the ecdysone receptor complex in L. dispar larvae after methoxyfenozide exposure.

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.

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