Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae)
We investigated the effects of methanolic extracts of Azadirachta excelsa wood (SWE) at concentrations of 5, 10 and 20 gl-1 against Crocidolomia binotalis. Second instars were fed a diet of cabbage leaves treated with SWE or were contacted topically with SWE. The results indicated that SWE produced...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2003
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/115067/ http://psasir.upm.edu.my/id/eprint/115067/1/115067.pdf |
| _version_ | 1848866675568410624 |
|---|---|
| author | Ng, Lean Teik Yuen, Pak Mun Loke, Wai Hong Kadir, Azizol Abdul |
| author_facet | Ng, Lean Teik Yuen, Pak Mun Loke, Wai Hong Kadir, Azizol Abdul |
| author_sort | Ng, Lean Teik |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | We investigated the effects of methanolic extracts of Azadirachta excelsa wood (SWE) at concentrations of 5, 10 and 20 gl-1 against Crocidolomia binotalis. Second instars were fed a diet of cabbage leaves treated with SWE or were contacted topically with SWE. The results indicated that SWE produced significant (p < 0.05) antifeedant and contact toxicity effects. However, among the different treatments, a lesser effect on pupal weight was noted in the contact toxicity test. In most instances, untreated leaves were severely damaged, whereas leaves treated with SWE were not attacked or were only slightly damaged. Although both methods of SWE treatment caused a significantly high mortality rate, there was no difference in dose response in the range studied. Thus SWE at a concentration of 5 gl-1 was shown to be as active as that at 20 gl-1. The results indicate that SWE is a potent antifeedant and also has toxicity against C binotalis. |
| first_indexed | 2025-11-15T14:24:22Z |
| format | Article |
| id | upm-115067 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:24:22Z |
| publishDate | 2003 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1150672025-02-19T02:43:09Z http://psasir.upm.edu.my/id/eprint/115067/ Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae) Ng, Lean Teik Yuen, Pak Mun Loke, Wai Hong Kadir, Azizol Abdul We investigated the effects of methanolic extracts of Azadirachta excelsa wood (SWE) at concentrations of 5, 10 and 20 gl-1 against Crocidolomia binotalis. Second instars were fed a diet of cabbage leaves treated with SWE or were contacted topically with SWE. The results indicated that SWE produced significant (p < 0.05) antifeedant and contact toxicity effects. However, among the different treatments, a lesser effect on pupal weight was noted in the contact toxicity test. In most instances, untreated leaves were severely damaged, whereas leaves treated with SWE were not attacked or were only slightly damaged. Although both methods of SWE treatment caused a significantly high mortality rate, there was no difference in dose response in the range studied. Thus SWE at a concentration of 5 gl-1 was shown to be as active as that at 20 gl-1. The results indicate that SWE is a potent antifeedant and also has toxicity against C binotalis. Wiley 2003 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/115067/1/115067.pdf Ng, Lean Teik and Yuen, Pak Mun and Loke, Wai Hong and Kadir, Azizol Abdul (2003) Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae). Journal of the Science of Food and Agriculture, 83 (13). pp. 1327-1330. ISSN 0022-5142; eISSN: 1097-0010 https://onlinelibrary.wiley.com/doi/10.1002/jsfa.1542 10.1002/jsfa.1542 |
| spellingShingle | Ng, Lean Teik Yuen, Pak Mun Loke, Wai Hong Kadir, Azizol Abdul Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae) |
| title | Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae) |
| title_full | Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae) |
| title_fullStr | Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae) |
| title_full_unstemmed | Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae) |
| title_short | Effects of Azadirachta excelsa on feeding behaviour, body weight and mortality of Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae) |
| title_sort | effects of azadirachta excelsa on feeding behaviour, body weight and mortality of crocidolomia binotalis zeller (lepidoptera: pyralidae) |
| url | http://psasir.upm.edu.my/id/eprint/115067/ http://psasir.upm.edu.my/id/eprint/115067/ http://psasir.upm.edu.my/id/eprint/115067/ http://psasir.upm.edu.my/id/eprint/115067/1/115067.pdf |