| Project/Area Number |
06556009
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 試験 |
|---|
| Research Field |
植物保護
|
|---|
| Research Institution | Kyushu University |
|---|
Principal Investigator |
HIROSE Yoshimi Fac.Agr., Kyushu Univ., Prof., 農学部, 教授 (10038218)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NAGAI Kazuya Okayama Pref.Agr.Exp.Sta., Res.Scientist, 病虫部, 研究員
TAKAGI Masami Fac.Agr., Kyushu Univ., Assoc.Prof., 農学部, 助教授 (20175425)
KAJITA Hiroshi Fac.Agr., Yamaguchi Univ., Prof., 農学部, 教授 (40038229)
|
|---|
| Project Period (FY) |
1994 – 1996
|
| Project Status |
Completed (Fiscal Year 1996)
|
| Budget Amount *help |
¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1996: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1995: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1994: ¥4,100,000 (Direct Cost: ¥4,100,000)
|
|---|
| Keywords | Thrips palmi / anthocorids / greenhouse pest / biological control / beneficials / Orius tantillus / Wollastoniella rotunda / non-diapause |
|---|
| Research Abstract |
To use the two anthocorids, Orius tantillus and Wollastoniella rotunda, as beneficials for controlling Thrips palmi, an important pest of eggplant, cucumber, sweetmelon, muskmelon and green pepper in greenhouses in Japan, we investigated various biological attributes of these anthocorid predators and their mass-rearing methods in the laboratory, and preliminarily tested a release of O.tantillus on greenhouse eggplants infested with T.palmi. Laboratory experiments on effects of photoperiod and temperature on development and reproduction of both predators confirmed that they are non-diapausing species, and demonstrated that they can develop and reproduce under temperature conditions during winter in greenhouses in Japan. Laboratory experiments on their predatory and reproductive ability suggest that both predators can control T.palmi during winer in greenhouses in Japan. Studies on mass-rearing methods for both predators showed that use of Ephestia kuehniella eggs for an alternate prey and use of broad bean sprout for an oviposition substratum are effective to mass rearing of O.tantillus, and that use of E.kuehniella eggs or the mite Tyrophagus putriscentiae for an alternate prey and use of kidney bean sprout for an oviposition substratum are also effective to mass rearing of W.rotunda. Although a preliminary test for release of O.tantillus had a problem of its experimental design, the result of this test was not negative and suggests the need of more rigorous tests. From the results of these laboratory and greenhouse studies, it is concluded that more research is needed for practical use of O.tantillus and W.rotunda for beneficials for controlling T.palmi in greenhouses.
|
