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DIFFERENCE IN INSECTICIDE TOLERANCE AND ENZYME ACTIVITY OF SPODOPTERA EXIGUA LARVAE AT DIFFERENT INSTARS

Peng Mei

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Abstract

The toxicity of phoxim, aiphacypermethrin, methoxyfenozide and chlorfluazuron to different instar larvae of Spodoptera exigua was tested using the dipping method. Insecticide tolerance of the larvae at the 2~(nd), 3~(rd) and 4~(th) instar stages increased with their development, being lowest in the 2~(nd) instar larvae and rising sharply at and after the 3~(rd) instar stage. The activities of Ache, ACP, ALP,CarE and GST increased with larvae development.

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What this paper is about

The toxicity of phoxim, aiphacypermethrin, methoxyfenozide and chlorfluazuron to different instar larvae of Spodoptera exigua was tested using the dipping method. Insecticide tolerance of the larvae at the 2~(nd), 3~(rd) and 4~(th) instar stages increased with their development, being lowest in the 2~(nd) instar larvae and rising sharply at and after the 3~(rd) instar stage. The activities of Ache, ACP, ALP,CarE and GST increased with larvae development.

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Available abstract

The toxicity of phoxim, aiphacypermethrin, methoxyfenozide and chlorfluazuron to different instar larvae of Spodoptera exigua was tested using the dipping method. Insecticide tolerance of the larvae at the 2~(nd), 3~(rd) and 4~(th) instar stages increased with their development, being lowest in the 2~(nd) instar larvae and rising sharply at and after the 3~(rd) instar stage. The activities of Ache, ACP, ALP,CarE and GST increased with larvae development.

Key concepts: Exigua, Instar, Spodoptera, Larva, Phoxim, Biology, Toxicology, Botany

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DIFFERENCE IN INSECTICIDE TOLERANCE AND ENZYME ACTIVITY OF SPODOPTERA EXIGUA LARVAE AT DIFFERENT INSTARS — Research Paper | ScholarLens