Biological and Molecular Studies on an Invasive Insect Pest, Lygus hesperus (Hemiptera: Miridae), in the Taif Region, Saudi Arabia1

2020 ◽  
Vol 129 (1) ◽  
pp. 23
Author(s):  
S. M. Sayed ◽  
S. A. Elarnaouty ◽  
M. E. Alkafafy
Keyword(s):  
Insect Pest ◽  
Lygus Hesperus ◽  
Invasive Insect ◽  
Molecular Studies

scholarly journals Genomewide transcriptional signatures of migratory flight activity in a globally invasive insect pest

2015 ◽  
Vol 24 (19) ◽  
pp. 4901-4911 ◽  
Author(s):  
Christopher M. Jones ◽  
Alexie Papanicolaou ◽  
George K. Mironidis ◽  
John Vontas ◽  
Yihua Yang ◽  
...  
Keyword(s):  
Insect Pest ◽  
Flight Activity ◽  
Invasive Insect ◽  
Migratory Flight

scholarly journals Predicting Insect Invasiveness With Whole-genome Sequencing Data

2020 ◽  
Author(s):  
Cong Huang ◽  
Nianwan Yang ◽  
Shuping Wang ◽  
Xiaodan Fan ◽  
Cong Pian ◽  
...  
Keyword(s):  
Insect Pest ◽  
Genomic Analysis ◽  
Gene Families ◽  
Insect Species ◽  
Whole Genome Sequencing Data ◽  
Comparative Genomic ◽  
Nucleic Acid Metabolism ◽  
Sequencing Data ◽  
Invasive Insects ◽  
Invasive Insect

Abstract Background Invasive alien insects threaten agriculture, biodiversity, and human livelihoods globally. Unfortunately, insect invasiveness still cannot be reliably predicted. Empirical policies of insect pest quarantine and inspection are mainly designed against species that are already problematic. Results We conducted a comparative genomic analysis of 37 invasive insect species and six non-invasive insect species, showing that the gene families associated with defense, protein and nucleic acid metabolism, chemosensory function, and transcriptional regulation were significantly expanded in invasive insects, suggesting that enhanced abilities in self-protection, nutrition exploitation, and locating food or mates are intrinsic features conferring invasiveness in insects. By using these intrinsic genome features, we proposed an invasiveness index and estimated the invasiveness of 99 other insect species with genome data, classifying them as highly, moderately, or minimally invasive. Insects possessing all these aforementioned enhanced abilities are predicted to be highly invasive, and vice versa. Next, a logistic-regression classifier was trained to predict insect invasiveness, achieving 93.2% accuracy. Conclusions We present evidence that several traits may confer invasiveness in insects and these features can be used to predict insect invasiveness accurately, and we quantify insect invasiveness with an invasiveness index.

scholarly journals Invasive Insects: Management Methods Explored

2019 ◽  
Vol 19 (5) ◽  
Author(s):  
Gemma M McLaughlin ◽  
Peter K Dearden
Keyword(s):  
Native Species ◽  
Resource Competition ◽  
Insect Pest ◽  
Unintended Consequences ◽  
Future Research ◽  
Agricultural Crops ◽  
New Techniques ◽  
Invasive Insects ◽  
Invasive Insect ◽  
Insect Pest Control

Abstract Invasive insect species can act as a plague across the globe, capable of vast expansion and rapid, proliferate reproduction. The spread of pathogens of serious diseases such as malaria and Zika virus and damages to agricultural crops number some of the afflictions invasive insects provide to humans alone. Additionally, an escape from predators can fail to keep invasive insects in check, providing potential threats such as extra resource competition to native species when insects invade. A variety of methods are employed to combat these invasive species, each with their own varying levels of success. Here, we explore the more traditional methods of invasive insect pest control, such as pesticides and biological control. In lieu of several unintended consequences resulting from such practices, we suggest some should be abandoned. We evaluate the potential of new techniques, in particular, those with a genetic component, regarding the costs, benefits and possible consequences of implementing them. And finally, we consider which techniques should be the focus of future research, if we truly wish to manage or even eradicate invasive insects in their introduced lands.

scholarly journals Tissue-Specific Transcriptomics of the Exotic Invasive Insect Pest Emerald Ash Borer (Agrilus planipennis)

PLoS ONE ◽  
2010 ◽  
Vol 5 (10) ◽  
pp. e13708 ◽  
Author(s):  
Omprakash Mittapalli ◽  
Xiaodong Bai ◽  
Praveen Mamidala ◽  
Swapna Priya Rajarapu ◽  
Pierluigi Bonello ◽  
...  
Keyword(s):  
Insect Pest ◽  
Emerald Ash Borer ◽  
Agrilus Planipennis ◽  
Tissue Specific ◽  
Invasive Insect ◽  
Exotic Invasive

scholarly journals Impact of Lygus hesperus (Hemiptera: Miridae) Feeding and Oviposition on Lettuce

2019 ◽  
Vol 20 (4) ◽  
pp. 215-219
Author(s):  
Shimat V. Joseph
Keyword(s):  
Plant Height ◽  
Lactuca Sativa ◽  
Insect Pest ◽  
Lygus Hesperus ◽  
Tarnished Plant Bug ◽  
Feeding Sites ◽  
Lactuca Sativa L ◽  
Major Injury ◽  
Heavy Infestation ◽  
Coast Region

The western tarnished plant bug, Lygus hesperus Knight (Hemiptera: Miridae), is an important insect pest of lettuce, Lactuca sativa L. in the central coast region of California. However, little is documented on the injury symptoms relative to levels of L. hesperus infestation on lettuce. Experiments were conducted in which lettuce plants were exposed to 0, 1, 3, 5, and 10 L. hesperus adults for 2 and 7 days. The major injury symptom observed was lesions on the midrib of the leaves, and under low to moderate infestation (e.g., one to five adults per plant) after 2 days of exposure these lesions were not significantly different from the insect-free control. Under heavy infestation (e.g., 10 adults per plant), however, lesions developed rather quickly after 2 days of exposure. The number of lesions was positively associated with numbers of feeding sites and eggs. When heavy infestation lasted for a week, most of the plants died. At low to moderate infestation, more lesions developed compared with the insect-free control. After a weeklong exposure, an increase in number of lesions was negatively associated with plant height. The results emphasize the need for regular scouting to facilitate immediate management decisions and actions to reduce losses from L. hesperus feeding and oviposition injury in lettuce.

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