Table 1.
Overall characteristics and biochemical profiles of 10 potential larvicidal native Bacilus thuringiensis isolates, from different regional sources, and the Bti-H14 reference strain
| B. thuringiensis code/City regional source | Catalase, oxidase, lecithinase, esculin and gelatin hydrolysis, hemolytic and motility activities, citrate utilization, nitrate-reduction, and VP test | Urease, H2S, NPG, and indole tests | Acid produced from starch, glycogen, glucose, fructose, mannose, or maltose | No acid from inulin, xylose, galactose, lactose, salicin, mannitol, or sucrose* |
|---|---|---|---|---|
| Bti-H14 | + | − | + | − |
| Bt-12/Yanbu | + | − | + | − |
| Bt-26/Medina | + | − | + | − |
| Bt-29/Medina | + | − | + | − |
| Bt-42/Jizan | + | − | + | − |
| Bt-44/Jizan | + | − | + | − |
| Bt-53/Medina | + | − | + | − |
| Bt-55/Medina | + | − | + | − |
| Bt-60/Medina | + | − | + | + |
| Bt-63/Mecca | + | − | + | − |
| Bt-68/Medina | + | − | + | − |
*
The isolate Bt-63 produced acid from sucrose