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Using Black Earwigs Chelisoches morio (Fabricius) for Controlling Coconut Black-Headed Caterpillar Opisina arenosella Walker |
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| รหัสดีโอไอ | |
| Creator | Somchai Suwongsaksri |
| Title | Using Black Earwigs Chelisoches morio (Fabricius) for Controlling Coconut Black-Headed Caterpillar Opisina arenosella Walker |
| Contributor | Phattaraporn Sappanukroh, Junthima Aeimsaard, Nantanat Pinsri, Patchareewan Chongchitmate, Satip Malee |
| Publisher | Department of Agriculture |
| Publication Year | 2563 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 38 |
| Journal No. | 1 |
| Page no. | 2-12 |
| Keyword | black earwig, coconut black-headed caterpillar, biology |
| URL Website | https://at.doa.go.th/journal |
| Website title | Thai Agricultural Research Journal |
| ISSN | 0125-8389 |
| Abstract | The study of black earwig Chelisoches morio (Fabricius) usage to control coconutblack head caterpillar Opisina arenosella Walker was conducted at the Laboratory ofNatural Enemies Research and Development Building, Plant Protection Research andDevelopment Office, Department of Agriculture and in aromatic coconut field at SamutSakhon and Kanchanaburi provinces during October 2016 - July 2018. Results showed thatBlack earwig can feed on cat food, eggs and black-headed caterpillar larvae. It is convenientand easy to rear in large quantities. A biological study on black earwig feeding on cat foodwas then conducted which revealed that female adult usually laid eggs in mass up to 100eggs in its life time. The incubation period was 6.41 days. There were four instars during thenymphal which lasted 40.12 days. The longevity of female and male were 102.65 and 91.20days respectively. Thus, the total life cycle of black earwig was 153.28 days. Results fromthe study on feeding capacity of black earwig using all stages of coconut black-headedcaterpillar as food revealed that both female and male earwig could consume every stageof coconut black-headed caterpillar with no significantly difference, but female earwig couldsignificantly consume more than male earwig at 36.40 and 31.60 larvae respectively. Resultsof the field studies revealed that if the infestation was moderate, releasing of 8 black earwigsper plant was adequate to control the black head caterpillar and the release should berepeated in the 3rd week. However, the number of black earwigs should be increased to32 individuals per plant in order to achieve satisfactory control level when the outbreak wassevere. This strategy can be used to control the outbreaks for up to 3 weeks. |
