Effects of Insect Juvenile Hormone Active NC-170 on Metamorphosis, Oviposition and Embryogenesis in Leafhoppers
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- MIYAKE Toshiro
- The Institute of Physical & Chemical Research
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- HARUYAMA Hiroshi
- Shiraoka Research Station of Biological Science, Nissan Chemical Ind. Ltd.
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- OGURA Tomoyuki
- Central Research Institute, Nissan Chemical Ind. Ltd.
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- MITSUI Takashi
- The Institute of Physical & Chemical Research
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- SAKURAI Akira
- The Institute of Physical & Chemical Research
Bibliographic Information
- Other Title
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- 幼若ホルモン様物質NC-170のヨコバイ類の変態, 産卵, 胚子発生に対する影響
- 幼若ホルモン様物質NC-170のヨコバイ類の変態,産卵胚子発生に対する影響〔英文〕
- ヨウジャク ホルモンヨウ ブッシツ NC-170 ノ ヨコバイルイ ノ ヘンタ
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Abstract
The activity of a new juvenile hormone analogue, NC-170 [4-chloro-5-(6-chloro-3-pyridylmethoxy)-2-(3, 4-dichlorophenyl)-pyridazin-3(2H)-one], was evaluated on four species of leafhoppers, Nephotettix cincticeps, N. nigropictus, N. virescens and Recilia dorsalis. When NC-170 was topically applied to mid-penultimate larvae, their metamorphosis was strongly inhibited. The compound with the ID50's of 5.2×10-11 to 3.7×10-12g/larva was 10 to 30 times as active as natural JH-1. The critical period of the morphogenetic activity was limited in a 24hr span before and after the 4th larval molt. The affected insects did not develop into normal adults, but into supernumerary larvae (SL1). About 5 days later, the SL1 could not complete the molt into secondary supernumerary larvae (SL2) and subsequently died. Furthermore, NC-170 showed good sterile effects. When newly emerged female N. cincticeps adults were continuously exposed to NC-170, the hatchability of oviposited eggs severely reduced, even at a concentration of 4ppm. In a field trial, NC-170 showed good foliar persistency in paddy fields and single spray treatment with 100ppm NC-170 considerably suppressed the population density of N. cincticeps for more than 6 weeks.
Journal
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- Journal of Pesticide Science
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Journal of Pesticide Science 16 (3), 441-448, 1991
Pesticide Science Society of Japan
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Details 詳細情報について
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- CRID
- 1390001205209527424
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- NII Article ID
- 110001712499
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- NII Book ID
- AN00196227
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- ISSN
- 03851559
- 13490923
- 1348589X
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- NDL BIB ID
- 3734465
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed