Resistance of Bemisia tabaci Mediterranean (Q‐biotype) to Pymetrozine: Resistance Risk Assessment, Cross‐Resistance to Six Other Insecticides and Detoxification Enzyme Assay

2020 ◽  
Author(s):  
Fan Wang ◽  
Jin Liu ◽  
Shuai Shuai ◽  
Chunli Miao ◽  
Baojie Chi ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Bemisia Tabaci ◽  
Enzyme Assay ◽  
Cross Resistance ◽  
Detoxification Enzyme ◽  
Resistance Risk ◽  
Q Biotype

Assessment of cross-resistance potential to neonicotinoid insecticides in Bemisia tabaci (Hemiptera: Aleyrodidae)

2005 ◽  
Vol 95 (6) ◽  
pp. 535-543 ◽  
Author(s):  
N. Prabhaker ◽  
S. Castle ◽  
T.J. Henneberry ◽  
N.C. Toscano
Keyword(s):  
Bemisia Tabaci ◽  
Resistant Strain ◽  
Cross Resistance ◽  
Imperial Valley ◽  
Neonicotinoid Insecticides ◽  
Resistance Patterns ◽  
Southwestern Usa ◽  
Resistant Strains ◽  
Multiple Strains ◽  
Q Biotype

AbstractLaboratory bioassays were carried out with four neonicotinoid insecticides on multiple strains of Bemisia tabaci (Gennadius) to evaluate resistance and cross-resistance patterns. Three imidacloprid-resistant strains and field populations from three different locations in the southwestern USA were compared in systemic uptake bioassays with acetamiprid, dinotefuran, imidacloprid and thiamethoxam. An imidacloprid-resistant strain (IM-R) with 120-fold resistance originally collected from Imperial Valley, California, did not show cross-resistance to acetamiprid, dinotefuran or thiamethoxam. The Guatemala-resistant strain (GU-R) that was also highly resistant to imidacloprid (RR = 109-fold) showed low levels of cross-resistance when bioassayed with acetamiprid and thiamethoxam. However, dinotefuran was more toxic than either imidacloprid or thiamethoxam to both IM-R and GU-R strains as indicated by low LC50s. By contrast, a Q-biotype Spanish-resistant strain (SQ-R) of B. tabaci highly resistant to imidacloprid demonstrated high cross-resistance to the two related neonicotinoids. Field populations from Imperial Valley (California), Maricopa and Yuma (Arizona), showed variable susceptibility to imidacloprid (LC50s ranging from 3.39 to 115 μg ml–1) but did not exhibit cross-resistance to the three neonicotinoids suggesting that all three compounds would be effective in managing whiteflies. Yuma populations were the most susceptible to imidacloprid. Dinotefuran was the most toxic of the four neonicotinoids against field populations. Although differences in binding at the target site and metabolic pathways may influence the variability in cross-resistance patterns among whitefly populations, comparison of whitefly responses from various geographic regions to the four neonicotinoids indicates the importance of ecological and operational factors on development of cross-resistance to the neonicotinoids.

Resistance risk assessment to chlorpyrifos and cross-resistance to other insecticides in a field strain of Phenacoccus solenopsis Tinsley

2017 ◽  
Vol 94 ◽  
pp. 38-43 ◽  
Author(s):  
Muhammad Ismail ◽  
Masood Ejaz ◽  
Naeem Abbas ◽  
Sarfraz Ali Shad ◽  
Muhammad Babar Shahzad Afzal
Keyword(s):  
Risk Assessment ◽  
Field Strain ◽  
Cross Resistance ◽  
Phenacoccus Solenopsis ◽  
Resistance Risk

A new silverleaf-inducing biotype Ms of Bemisia tabaci (Hemiptera: Aleyrodidae) indigenous to the islands of the south-west Indian Ocean

2005 ◽  
Vol 95 (1) ◽  
pp. 29-35 ◽  
Author(s):  
H. Delatte ◽  
B. Reynaud ◽  
M. Granier ◽  
L. Thornary ◽  
J.M. Lett ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Distinct Group ◽  
Genetic Type ◽  
Coi Gene ◽  
Vegetable Crops ◽  
Sequence Comparisons ◽  
Genetic Types ◽  
South West Indian Ocean ◽  
Biotype B ◽  
Q Biotype

AbstractFollowing the first detection of tomato yellow leaf curl virus (TYLCV) from R=union (700 km east of Madagascar) in 1997 and the upsurge of Bemisia tabaci (Gennadius) on vegetable crops, two genetic types of B. tabaci were distinguished using RAPD–PCR and cytochrome oxidase I (COI) gene sequence comparisons. One type was assigned to biotype B and the other was genetically dissimilar to the populations described elsewhere and was named Ms, after the Mascarenes Archipelago. This new genetic type forms a distinct group that is sister to two other groups, one to which the B biotype is a member and one to which the Q biotype belongs. The Ms biotype is thought to be indigenous to the region as it was also detected in Mauritius, the Seychelles and Madagascar. Both B and Ms populations of B. tabaci induced silverleaf symptoms on Cucurbita sp., and were able to acquire and transmit TYLCV. Taken together these results indicate that the Ms genetic type should be considered a new biotype of B. tabaci.

scholarly journals Host range of Bemisia tabaci Q-biotype

2009 ◽  
Vol 51 ◽  
pp. 75-77 ◽  
Author(s):  
Hiroyuki Iida ◽  
Toshio Kitamura ◽  
Ken-ichiro Honda ◽  
Yasuhiro Mizusawa ◽  
Shigeru Kamata ◽  
...  
Keyword(s):  
Host Range ◽  
Bemisia Tabaci ◽  
Q Biotype
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