Antifeeding effects of crude lantadene from Lantana camara on Plutella xylostella and Spodoptera litura larvae

Abstract

Abstract: In this study,crude lantadene was extracted from Lantanacamara leaves,and its antifeeding effects on Plutella xylostella and Spodoptera litura larvae were tested.In no-choice test,crude lantadene at 1.6 mg穖l^-1 concentration had antifeeding effects on the 2nd instar P.xylostella larvae and 1st instar S.litura larvae,with the antifeeding rate being 62.4% and 33.1%,respectively within 48 h.In choice test,even a low concentration (0.4 mg穖l^-1) crude lantadene still had anti-feeding effects on the 2nd instar P.xylostella larvae,and the antifeeding rate at 0.4,0.8 and 1.6 mg穖l^-1 concentration was 52.7%,55.5% and 78.9%,respectively.Crude lantadene only at 1.6 mg穖l^-1 concentration had anti-feeding effects on the 1st instar S.litura larvae,and the antifeeding rate was 33.0%.For the 2nd instar S.litura larvae,crude lantadene had no antifeeding effects both in no-choice and in choice test.

Key words: Lantana camara, Crude lantadenes, Plutella xylostella, Spodoptera litura, Antifeeding effect

CLC Number:

Q968.1

DONG Yizhi, ZHANG Maoxin, LING Bing . Antifeeding effects of crude lantadene from Lantana camara on Plutella xylostella and Spodoptera litura larvae[J]. Chinese Journal of Applied Ecology, 2005, 16(12): 2361-2364.

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