Association of CYP4G19 Expression With Gel Bait Performance in Pyrethroid-Resistant German Cockroaches (Blattodea: Ectobiidae) From Taiwan
| Autor: | I-Hsuan Hu, Chow-Yang Lee, Mei-Er Chen, Kok-Boon Neoh, Hau-You Tzeng |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Male Veterinary medicine Insecticides Hydramethylnon 030231 tropical medicine Taiwan Cockroaches 01 natural sciences Insecticide Resistance 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Blattodea Imidacloprid biology.animal parasitic diseases Pyrethrins Animals Fipronil Cockroach German cockroach Pyrethroid Ecology biology Indoxacarb General Medicine Blattellidae biology.organism_classification 010602 entomology chemistry Insect Science |
| Zdroj: | Journal of economic entomology. 114(4) |
| ISSN: | 1938-291X |
| Popis: | Overexpression of a cytochrome P450 gene, CYP4G19, is known to associate with pyrethroid resistance in the German cockroach, Blattella germanica (L.) (Blattodea: Ectobiidae). In this study, we investigated the CYP4G19 expression level in 20 field-collected strains of B. germanica in Taiwan. We also examined the level of adult male susceptibility to imidacloprid, fipronil, indoxacarb, and hydramethylnon using single-diagnostic dose bioassays and their susceptibility to corresponding gel baits to determine how the CYP4G19 expression level influences the cockroach gel bait performance. Results showed that the CYP4G19 gene expression level among the field-collected German cockroach was 1.8- to 9.7-fold higher than that of the susceptible strain. It was negatively correlated (P < 0.05) with the % mortality after treatments with imidacloprid and fipronil diagnostic doses. However, no correlation was found between CYP4G19 gene expression with the % mortality after treatment with indoxacarb and hydramethylnon diagnostic doses. Indoxacarb and hydramethylnon baits showed high efficacy against the field strains with a mean mortality of 97.58 ± 1.35% and 90.95 ±1.65%, respectively. This study provided the first evidence of cross-resistance to imidacloprid and fipronil in pyrethroid-resistant German cockroaches due to overexpression of CYP4G19. |
| Databáze: | OpenAIRE |
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