Related Experiment Video

Updated: Oct 15, 2026

Embryo Microinjection Techniques for Efficient Site-Specific Mutagenesis in Culex quinquefasciatus

Embryo Microinjection Techniques for Efficient Site-Specific Mutagenesis in Culex quinquefasciatus

Published on: May 24, 2020

Amplified esterases B1 and A2-B2 in field populations of Culex pipiens from China

J E Liu¹, C L Qiao, L P Chen

¹State Key Lab of Integrated Management of Pest Insects & Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing.

Journal of the American Mosquito Control Association

|July 20, 2000

Abstract:

The main organophosphate (OP) resistance mechanism in the Culex pipiens complex is increased activity of esterases A and B. Fourth-stage larvae from 2 field populations of C. pipiens from Gaomi and Kunming, China, were compared for tolerance to parathion, dichlorovos (OP), and bassa (carbamate) insecticides. Both populations were resistant to OPs but not to bassa. Starch gel electrophoresis indicated that elevated esterase activity was correlated with OP resistance. High frequencies of amplified esterase genes B1 and A2-B2 (0.85 and 0.50) were discovered in Gaomi and Kunming, respectively. However, only low levels of gene amplification were detected.

More Related Videos

Preparing and Injecting Embryos of Culex Mosquitoes to Generate Null Mutations using CRISPR/Cas9

Preparing and Injecting Embryos of Culex Mosquitoes to Generate Null Mutations using CRISPR/Cas9

Published on: September 10, 2020

Mosquito-Associated Virus Isolation from Field-Collected Mosquitoes

Mosquito-Associated Virus Isolation from Field-Collected Mosquitoes

Published on: August 31, 2022

Related Concept Videos

Articles linked to this work by shared authors, journal, and citation graph.

Precision Studies and Searches for CP Asymmetries in the Inclusive Decay Λ_{c}^{+}→ΛX.

Physical review letters·2026

First Energy-Scan Measurement of e^{+}e^{-}→K^{+}K^{-} around the ψ(2S) Resonance.

Physical review letters·2026

Measurements of the Absolute Branching Fraction of the Semileptonic Decay Ξ^{-}→Λe^{-}ν[over ¯]_{e} and the Axial Charge of Ξ^{-}.

Physical review letters·2026

First Experimental Constraint on the Scalar Current in the D^{0(+)}→K[over ¯]ℓ^{+}ν_{ℓ} Transition.

Physical review letters·2026

First Observation of D^{0(+)}→K[over ¯]ωe^{+}ν_{e} and Determination of the Branching Fraction of K[over ¯]_{1}(1270)→K[over ¯]ω.

Physical review letters·2026

Measurement of the Λ electric dipole moment with an entangled baryon-antibaryon system.

Science (New York, N.Y.)·2026

See all related articles