Susceptibility to Acaricides and the Frequencies of Point Mutations in Etoxazole- and Pyridaben-Resistant Strains and Field Populations of the Two-Spotted Spider Mite, Tetranychus urticae (Acari: Tetranychidae)
| Autor: | Eungyeong Shin, Sun-Ran Cho, Won-Jin Kang, Gil-Hah Kim, Hyun-Na Koo, Bueyong Park, Hyun Kyung Kim, Jihye Choi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Veterinary medicine biology Strain (chemistry) Acaricide Point mutation Science etoxazole Pesticide biology.organism_classification 01 natural sciences Genotype frequency resistance 010602 entomology 03 medical and health sciences pyridaben 030104 developmental biology Spider mite Insect Science Tetranychus urticae Acari point mutation |
| Zdroj: | Insects, Vol 12, Iss 660, p 660 (2021) Insects Volume 12 Issue 7 |
| ISSN: | 2075-4450 |
| Popis: | The two-spotted spider mite Tetranychus urticae Koch is a major agricultural pest worldwide and is known to rapidly develop resistance to pesticides. In the present study, we explored a field strain that was collected in 2000 and 2003 and has been exhibiting resistance to etoxazole and pyridaben over the last 16 years. The resistance ratios of the etoxazole- and pyridaben-resistant strains (ER and PR) to etoxazole or pyridaben were more than 5,000,000- and 4109.6-fold higher than that of the susceptible strain, respectively. All field-collected populations showed resistance to etoxazole and pyridaben. The ER and PR strains showed cross-resistance to several acaricides. Both I1017F and H92R point mutations were detected in 7 out of 8 field groups. Spirodiclofen and spiromesifen resulted in more than 77.5% mortality in the 8 field groups. In addition, the genotype frequency of the I1017F point mutation was 100.0% in the ER strain, and that of the H92R point mutation was 97.0% in the PR strain. All of the field populations were found to have a high frequency of I1017F. These results suggest that the observation of resistance patterns will help in designing a sustainable IPM program for T. urticae. |
| Databáze: | OpenAIRE |
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