Citation
Hirose Y., . (1986) Natural biological control of the citrus swallowtail Papilio by r-selected parasitoids in Japan. [Proceedings Paper]
Abstract
The citrus swallowtail Papilio xuthus Line is a pest of young citrus trees in Japan but it never reaches outbreak level and its population is usually maintained at a low level. A life-table study conducted in a suburban area of Fukuoka Japan showed that the pest population was spatially and temporally regulated by the egg parasitoids Trichogramma spp. mainly T. papilionis Nagarkatti and the pupal parasitoid Pteromalus puparum Linne. The reasons for such a naturally-occurring biological control in existence was explained by the following facts i these parasitoids were selected species exhibiting a high reproductive potential due to a short generation time ii the eggs and pupae of the multivoltine host were almost present through its long growing season affording opportunity for continuous parasitoid activity and iii the host of natural biological control classical biological control of pests by selected parasitoids was discussed. Problems of the detection of density-dependent regulation by natural enemies were also discussed
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Abstract
The citrus swallowtail Papilio xuthus Line is a pest of young citrus trees in Japan but it never reaches outbreak level and its population is usually maintained at a low level. A life-table study conducted in a suburban area of Fukuoka Japan showed that the pest population was spatially and temporally regulated by the egg parasitoids Trichogramma spp. mainly T. papilionis Nagarkatti and the pupal parasitoid Pteromalus puparum Linne. The reasons for such a naturally-occurring biological control in existence was explained by the following facts i these parasitoids were selected species exhibiting a high reproductive potential due to a short generation time ii the eggs and pupae of the multivoltine host were almost present through its long growing season affording opportunity for continuous parasitoid activity and iii the host of natural biological control classical biological control of pests by selected parasitoids was discussed. Problems of the detection of density-dependent regulation by natural enemies were also discussed
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | 5 ill. 22 ref. Summary En |
| AGROVOC Term: | CITRUS |
| AGROVOC Term: | PAPILIO |
| AGROVOC Term: | CONTROL BIOLOGICO |
| AGROVOC Term: | ENEMIGOS NATURALES |
| AGROVOC Term: | JAPON/ DEPREDADORES |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:25 |
| URI: | http://webagris.upm.edu.my/id/eprint/14012 |
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