scholarly journals Difference of susceptibility against various acaricides between dicofol resistant strain and susceptible strain of the citrus red mite, Panonychus citri (MCGREGOR)

1974 ◽  
Vol 18 (3) ◽  
pp. 147-149 ◽  
Author(s):  
Kaname MATSUMOTO ◽  
Norizumi SHINKAJI
Keyword(s):  
Resistant Strain ◽  
Susceptible Strain ◽  
Panonychus Citri ◽  
Citrus Red Mite

Monitoring the Resistance of the Citrus Red Mite (Acari: Tetranychidae) to Four Acaricides in Different Citrus Orchards in China

2019 ◽  
Vol 113 (2) ◽  
pp. 918-923 ◽  
Author(s):  
Deng Pan ◽  
Wei Dou ◽  
Guo-Rui Yuan ◽  
Qi-Hao Zhou ◽  
Jin-Jun Wang
Keyword(s):  
High Resistance ◽  
Southern China ◽  
Management Strategies ◽  
Resistance Management ◽  
Susceptible Strain ◽  
Southwestern China ◽  
Panonychus Citri ◽  
Citrus Red Mite ◽  
Citrus Orchards

Abstract The citrus red mite, Panonychus citri (McGregor), is an important spider mite pest in citrus producing areas. Owing to long-term acaricide exposure, resistance has evolved rapidly in recent years. To evaluate the extent of resistance, seven field mite populations sampled from various geographical locations in China during 2015–2018 were tested using the leaf-dip bioassay method to determine their susceptibilities to four acaricides. In comparison with the susceptible strain maintained in the laboratory, low or moderate levels of fenpropathrin resistance, while no resistance to abamectin or cyflumetofen, were found among populations sampled from Liangping, Wanzhou, Daying, and Anyue in Southwestern China during the test period. High levels (>1,000-fold, with LC50 values that were greater than the recommended concentration) of resistance to fenpropathrin had evolved in field populations from Southern China, including Guilin, Nanning, and Yuxi, when compared with that of the susceptible strain. Populations from Guilin and Nanning also evolved high resistance levels to abamectin (1,088-fold and 1,401-fold) and cyflumetofen (2,112-fold and 9,093-fold). All the populations sampled in 2018 showed a moderate or high resistance to bifenazate. Generally, field populations of citrus red mites from Southwestern China were more sensitive to the tested acaricides than those of Southern China. The data provide a foundation for developing acaricide resistance management strategies in these regions.

scholarly journals Polygenic and single gene responses to selection for resistance to diazinon in Lucilia cuprina.

Genetics ◽  
1992 ◽  
Vol 130 (3) ◽  
pp. 613-620 ◽  
Author(s):  
J A McKenzie ◽  
A G Parker ◽  
J L Yen
Keyword(s):  
Resistant Strain ◽  
Single Gene ◽  
Natural Populations ◽  
Susceptible Strain ◽  
Selection Line ◽  
Base Population ◽  
Gene Response ◽  
Biochemical Profiles ◽  
Resistant Strains ◽  
Selection For

Abstract Following mutagenesis with ethyl methanesulfonate, selection in a susceptible strain with a concentration of the insecticide diazinon (0.0004%, w/v) above that required to kill 100% of the susceptible strain, the LC100 of that strain, resulted in a single gene response. The resultant four mutant resistant strains have equivalent physiological, genetical and biochemical profiles to a diazinon-resistant strain derived from a natural population and homozygous for the Rop-1 allele. Modification of the microsomal esterase E3 is responsible for resistance in each case. The Rop-1 locus maps approximately 4.4 map units proximal to bu on chromosome IV. Selection within the susceptible distribution, at a concentration of diazinon [0.0001% (w/v)] less than the LC100, resulted in a similar phenotypic response irrespective of whether the base population had been mutagenized. The responses were polygenically based, unique to each selection line and independent of Rop-1. The relevance of the results to selection for insecticide resistance in laboratory and natural populations is discussed.

THE DIFFERENTIAL RESPONSE OF STRAINS OF WILD CARROT TO 2,4-D AND RELATED HERBICIDES

1963 ◽  
Vol 43 (3) ◽  
pp. 255-262 ◽  
Author(s):  
C. W. Whitehead ◽  
C. M. Switzer
Keyword(s):  
Resistant Strain ◽  
Differential Response ◽  
Susceptible Strain ◽  
Severe Injury ◽  
Radicle Growth ◽  
Cotyledon Stage ◽  
Wild Carrot

Studies were conducted on the effect of 2,4-D and some related herbicides on a susceptible and a resistant strain of wild carrot (Daucus corota L.). When treated with 2,4-D, 4-(2,4-DB) or 4-(MCPB), plants of the susceptible strain died within a few weeks while those of die resistant strain recovered after showing severe injury symptoms. Treatment with 2,4,5-T or silvex killed both the susceptible and resistant strains.Seeds of the two strains, placed in various concentrations of 2,4-D, showed no differences in germination or radicle growth after 7 days. However, sprays of 2,4-D on seedlings just after emergence produced the differential response. Resistance appeared to develop between germination and the cotyledon stage of growth.There were no differences in the effect of 2,4-D on the respiration of whole tissue of the susceptible and resistant wild carrots.

Panonychus citri. [Distribution map].

1964 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
New Zealand ◽  
Central America ◽  
West Indies ◽  
Pacific Islands ◽  
Distribution Map ◽  
Panonychus Citri ◽  
Citrus Red Mite ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Panonychus citri (McG.) (Acarina, Tetranychidae) (Citrus Red Mite). Hosts: Citrus spp., deciduous fruits, ornamentals, etc. Information is given on the geographical distribution in EUROPE (excl. USSR), Yugoslavia, ASIA (excl. USSR), Ceylon, China, India, Iran, Japan, Lebanon, Turkey, Vietnam, USSR, AFRICA, Republic of South Africa, Tunisia, AUSTRALASIA, and PACIFIC ISLANDS, Australia, Hawaii, New Zealand, NORTH AMERICA, U.S.A., CENTRAL AMERICA and WEST INDIES, West Indies, SOUTH AMERICA, Argentina, Brazil, Chile, Colombia, Peru.

Spirodiclofen and spirotetramat bioassays for monitoring resistance in citrus red mite, Panonychus citri (Acari: Tetranychidae)

2011 ◽  
Vol 68 (5) ◽  
pp. 781-787 ◽  
Author(s):  
Yuling Ouyang ◽  
Gregory H Montez ◽  
Lucy Liu ◽  
Elizabeth E Grafton-Cardwell
Keyword(s):  
Panonychus Citri ◽  
Citrus Red Mite
Sign in / Sign up

Export Citation Format

Share Document