التفاصيل البيبلوغرافية
| العنوان: |
Evaluation of potential entomopathogenic fungus, Beauveria bassiana, for controlling the coffee berry borer Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae) in Taiwan. |
| المؤلفون: |
Chang, Fang-Min, Lu, Hsiao-Ling, Nai, Yu-Shin |
| المصدر: |
Journal of Asia-Pacific Entomology; Dec2023, Vol. 26 Issue 4, pN.PAG-N.PAG, 1p |
| مستخلص: |
[Display omitted] • Two Beauveria bassiana isolates were selected for controlling coffee berry borer. • Bb-NCHU-271 showed higher virulence than Bb-NCHU-272 to coffee berry borer (CBB). • Typical histological evidence of Bb-NCHU-271 infected CBBs was observed. • Infestation test of Bb-NCHU-272 caused lower CBB survival rate than Bb-NCHU-271. • Slight control effects of two EPFs were found in the "Berries exposed to EPF" group. Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae: Scolytinae) , a coffee berry borer (CBB), is a serious pest of coffee fruits and causes economic losses in the coffee industry. With the concerns of chemical control, an alternative eco-friendly management strategy such as microbial control has emerged as the times require. Herein, a total of thirty-three fungi were isolated from CBB cadavers. Two entomopathogenic fungal isolates, NCHU-271 and NCHU-272, which showed fast insect-killing activity, were subjected to molecular identification and named " Beauveria bassiana- NCHU-271" (Bb-NCHU-271) and " Beauveria bassiana - NCHU-272" (Bb-NCHU-272). Moreover, a virulence test of Bb-NCHU-271 and Bb-NCHU-272 against CBBs was also performed. Both Bb-NCHU-271 and Bb-NCHU-272 caused 100% mortality at 8 days post inoculation (d.p.i.) and a LT 50 of Bb-NCHU-271 by spraying 108 conidia/ml was less than Bb-NCHU-272. Therefore, histological evidence of Bb-NCHU-271 infected CBBs was provided to proven the infection process of B. bassiana in CBBs. Furthermore, an infestation test was performed to evaluate the differences in CBB control efficacy between the treatments of "Borers exposed to EPF first" or "Berries exposed to EPF first". The results revealed that the "Borers exposed to EPF first" of Bb-NCHU-272 caused significantly lower survival rates and higher mycosis rates than those of Bb-NCHU-271. Only slight control effects of Bb-NCHU-271 and Bb-NCHU-272 were also observed in the "Berries exposed to EPF" treatment. In conclusion, Bb-NCHU-271 and −272 showed controlling ability to the CBBs either before or after CBB infestation into coffee berries, while application of EPFs before the CBBs bored into coffee fruits could enhance the control effect. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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