Citation
Zulkifli M., . and Ramle M., . and Basri M. W., . (2011) Susceptibility of termites Coptotermes curvignathus Isoptera: Rhinotermitidae against the entomopathogenic fungi metarhizium and beauveria. [Proceedings Paper]
Abstract
The susceptibility of termites Coptotermes curvignathus against four isolates of Metarhizium anisopliae MaTGK2 MaBP MaST MASE and three isolates of Beauveria bassiana BbFi BbFS BbF10 was determined. Bioassay was conducted by directly inoculating the individual termite worker by placing 20l of spore solutions onto the abdomen of termites. For each isolate five spore concentrations with 10-fold differences ranging from 2 x 10 to 2 x 10�· spores/ml were tested. Results showed that termite workers were susceptible to infection of both B. bassiana and M. anisopliae. Generally the termite mortality increased as the spore concentration increased. At the highest concentration of 2 x 10�· spores/ml five isolates MaSE MaST BbF1 BbF5 and BbF10 killed more than 90 termites as early as 6 days after treatment DAT and increased to 100 at 8 DAT. Only two isolates caused less than 100 mortality which are 90 MaTGK2 and 93 BbF10 at 8 DAT. Treatment at rate 2 x 10� spore/mL killed termites as good as treatment at rate 2 x 10�· spores/mL. The mortality in both concentrations was found not significantly different P0.05 at all data recording period. Probit analysis was performed to determine the values of Lethal Concentration 50 LC‚‚ then to rank the fungal isolates according their virulence against termites. Based on the LC‚‚ values was found that the isolate MaSE was the most virulent isolate on termites followed by isolates BbF5 MaBP MaST BBF10 MaTGK2 and BbF1.
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Abstract
The susceptibility of termites Coptotermes curvignathus against four isolates of Metarhizium anisopliae MaTGK2 MaBP MaST MASE and three isolates of Beauveria bassiana BbFi BbFS BbF10 was determined. Bioassay was conducted by directly inoculating the individual termite worker by placing 20l of spore solutions onto the abdomen of termites. For each isolate five spore concentrations with 10-fold differences ranging from 2 x 10 to 2 x 10�· spores/ml were tested. Results showed that termite workers were susceptible to infection of both B. bassiana and M. anisopliae. Generally the termite mortality increased as the spore concentration increased. At the highest concentration of 2 x 10�· spores/ml five isolates MaSE MaST BbF1 BbF5 and BbF10 killed more than 90 termites as early as 6 days after treatment DAT and increased to 100 at 8 DAT. Only two isolates caused less than 100 mortality which are 90 MaTGK2 and 93 BbF10 at 8 DAT. Treatment at rate 2 x 10� spore/mL killed termites as good as treatment at rate 2 x 10�· spores/mL. The mortality in both concentrations was found not significantly different P0.05 at all data recording period. Probit analysis was performed to determine the values of Lethal Concentration 50 LC‚‚ then to rank the fungal isolates according their virulence against termites. Based on the LC‚‚ values was found that the isolate MaSE was the most virulent isolate on termites followed by isolates BbF5 MaBP MaST BBF10 MaTGK2 and BbF1.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SB608 O27M939 2011 Call Number. |
| AGROVOC Term: | Oil palm |
| AGROVOC Term: | Infestation |
| AGROVOC Term: | Termites |
| AGROVOC Term: | Laboratory experimentation |
| AGROVOC Term: | Bioassays |
| AGROVOC Term: | Beauveria |
| AGROVOC Term: | Metarhizium |
| AGROVOC Term: | Entomopathogenic fungi |
| AGROVOC Term: | Mortality |
| AGROVOC Term: | Pathogenicity |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:16 |
| URI: | http://webagris.upm.edu.my/id/eprint/13683 |
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