Activity of extracts and compounds from New Zealand gymnosperms against larvae of Lucilia cuprina (Diptera: Caliiphoridae)

被引:12
作者
Gerard, PJ
Ruf, LD
Lorimer, SD
Heath, ACG
机构
[1] UNIV OTAGO,NEW ZEALAND CROP & FOOD RES INST LTD,DUNEDIN,NEW ZEALAND
[2] AGRES,WALLACEVILLE ANIM RES CTR,WALLACEVILLE,NEW ZEALAND
关键词
Lucilia cuprina; plant extracts; Gymnospermae; 20-hydroxyecdysone; 5,20-dihydroxyecdysone; ponasterone; nagilactone; dacrysterone; dyshomoerythrine;
D O I
10.1080/00288233.1997.9513246
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
A modified serum-based bioassay was used to screen plant extracts and assess compound activity against newly hatched larvae of the Australian sheep blowfly Lucilia cuprina. Larval instar mortality and physical appearance were recorded after exposure for 24 h to the treatments. Extracts from New Zealand gymnosperms shown to have activity against L. cuprina larvae were: Podocarpus totara; P. acuteafolius; Dacrycarpus dacrydioides; Halocarpus bidwillii; H. biformis; H. kirkii; Lagarostrobos colensoi; Lepidothamnus intermedius; L. laxifolius; Phyllocladus trichomanoides; P. glaucus, and Agathis australis'. The phytoecdysones 20-hydroxyecdysone, 5,20-dihydroxyecdysone, and ponasterone A inhibited larval moulting. Dyshomoerythrine, dacrysterone, and nagilactone C were insecticidal, with the latter also retarding growth at sublethal rates.
引用
收藏
页码:261 / 267
页数:7
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