Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae)
Seven isolates of Beauveria bassiona were screened for pathogenicity and infectivity at a concentration of 5x107 conidia mL-1 against Attevo sciodoxa at 27±2°C and 75±5% relative humidity with 12 h photoperiod. Based on screening results, isolates Bba-Pp and FS-11 were further bioassayed at 1 x 1...
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| Format: | Article |
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Academic Journals
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/16057/ http://psasir.upm.edu.my/id/eprint/16057/1/Pathogenicity%20of%20Beauveria%20bassiana%20against%20the%20tiger%20moth%20Atteva%20sciodoxa.pdf |
| _version_ | 1848842853982142464 |
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| author | Abood, Faizah Bajwa, Ghulam Ali Ibrahim, Yusof Sajap, Ahmad Said |
| author_facet | Abood, Faizah Bajwa, Ghulam Ali Ibrahim, Yusof Sajap, Ahmad Said |
| author_sort | Abood, Faizah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Seven isolates of Beauveria bassiona were screened for pathogenicity and infectivity at a concentration of 5x107 conidia mL-1 against Attevo sciodoxa at 27±2°C and 75±5% relative humidity with 12 h photoperiod. Based on screening results, isolates Bba-Pp and FS-11 were further bioassayed at 1 x 106, 5x106 and 1x107 conidia mL-1. All the isolates were found to be pathogenic. However, the infectivity varied significantly among the isolates. The earliest mortality was recorded three days after inoculation, The most virulent isolate, Bba-Pp, caused 100% mortality with a median infective time (ET50) of 3.6 days on day seven following inoculation while FS-11 caused 83,3% mortality with an ET50 value of 4.1 days, Bba-S13 was the least infective isolate with 24.9% mortality and 15.3 days of median effective time. Mycelia appeared on 24 to 48 h old cadavers, The highest level of sporulation on two-week old cadavers was 150.6x105 Bba-Pp conidia mg -1 cadaver while the lowest was 12.23x105 Bba-S13 conidia. The median effective concentration (EC50) of Bba-Pp was 9.89x105 conidia mL-1 while that of FS-11 was 3.85x106 conidia mL-1. The ET50 values 1x106 1x107 conidia mL-1 of Bba-Pp ranged between 7.0 and 4.4 days, respectively, while that of FS-11 were 10.3 and 5.8 days. A strong negative correlation was found between inoculum concentrations and food consumption (R2 = -0.99). The infection by Bba-Pp and FS-11I resulted in 55.8 to 72.5% reduction in food consumption by A. sciodoxa compared to the controls.
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| first_indexed | 2025-11-15T08:05:44Z |
| format | Article |
| id | upm-16057 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:05:44Z |
| publishDate | 2010 |
| publisher | Academic Journals |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-160572015-11-03T04:20:03Z http://psasir.upm.edu.my/id/eprint/16057/ Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) Abood, Faizah Bajwa, Ghulam Ali Ibrahim, Yusof Sajap, Ahmad Said Seven isolates of Beauveria bassiona were screened for pathogenicity and infectivity at a concentration of 5x107 conidia mL-1 against Attevo sciodoxa at 27±2°C and 75±5% relative humidity with 12 h photoperiod. Based on screening results, isolates Bba-Pp and FS-11 were further bioassayed at 1 x 106, 5x106 and 1x107 conidia mL-1. All the isolates were found to be pathogenic. However, the infectivity varied significantly among the isolates. The earliest mortality was recorded three days after inoculation, The most virulent isolate, Bba-Pp, caused 100% mortality with a median infective time (ET50) of 3.6 days on day seven following inoculation while FS-11 caused 83,3% mortality with an ET50 value of 4.1 days, Bba-S13 was the least infective isolate with 24.9% mortality and 15.3 days of median effective time. Mycelia appeared on 24 to 48 h old cadavers, The highest level of sporulation on two-week old cadavers was 150.6x105 Bba-Pp conidia mg -1 cadaver while the lowest was 12.23x105 Bba-S13 conidia. The median effective concentration (EC50) of Bba-Pp was 9.89x105 conidia mL-1 while that of FS-11 was 3.85x106 conidia mL-1. The ET50 values 1x106 1x107 conidia mL-1 of Bba-Pp ranged between 7.0 and 4.4 days, respectively, while that of FS-11 were 10.3 and 5.8 days. A strong negative correlation was found between inoculum concentrations and food consumption (R2 = -0.99). The infection by Bba-Pp and FS-11I resulted in 55.8 to 72.5% reduction in food consumption by A. sciodoxa compared to the controls. Academic Journals 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16057/1/Pathogenicity%20of%20Beauveria%20bassiana%20against%20the%20tiger%20moth%20Atteva%20sciodoxa.pdf Abood, Faizah and Bajwa, Ghulam Ali and Ibrahim, Yusof and Sajap, Ahmad Said (2010) Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae). Journal of Entomology, 7 (1). pp. 19-32. ISSN 1812-5670; ESSN: 1812-5689 http://scialert.net/abstract/?doi=je.2010.19.32 10.3923/je.2010.19.32 |
| spellingShingle | Abood, Faizah Bajwa, Ghulam Ali Ibrahim, Yusof Sajap, Ahmad Said Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) |
| title | Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) |
| title_full | Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) |
| title_fullStr | Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) |
| title_full_unstemmed | Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) |
| title_short | Pathogenicity of Beauveria bassiana against the tiger moth Atteva sciodoxa (Lepidoptera: Yponomeutidae) |
| title_sort | pathogenicity of beauveria bassiana against the tiger moth atteva sciodoxa (lepidoptera: yponomeutidae) |
| url | http://psasir.upm.edu.my/id/eprint/16057/ http://psasir.upm.edu.my/id/eprint/16057/ http://psasir.upm.edu.my/id/eprint/16057/ http://psasir.upm.edu.my/id/eprint/16057/1/Pathogenicity%20of%20Beauveria%20bassiana%20against%20the%20tiger%20moth%20Atteva%20sciodoxa.pdf |