Pathogenicity of Saudi Arabian fungal isolates against egg and larval stages of Rhynchophorus ferrugineus under laboratory conditions
The pathogenicity of various local entomopathogenic fungal isolates from the kingdom of Saudi Arabia has been tested in the laboratory against the red palm weevil, Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae). Fungi were coded, isolated, and purified. Beauveria bassiana (Balsamo-Cri...
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Veröffentlicht in: | International journal of tropical insect science 2020-12, Vol.40 (4), p.845-853 |
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Sprache: | eng |
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Zusammenfassung: | The pathogenicity of various local entomopathogenic fungal isolates from the kingdom of Saudi Arabia has been tested in the laboratory against the red palm weevil,
Rhynchophorus ferrugineus
Olivier (Coleoptera: Curculionidae). Fungi were coded, isolated, and purified.
Beauveria bassiana
(Balsamo-Crivelli) Vuillemin, coded as: BbSA-1 PDA-15 and
Metarhizium anisopliae
(Metsch.) Sorokin, coded as: MaSA-1 PDA-15, isolates demonstrated significant potential against
R. ferrugineus
larvae. A 1 × 10
10
conidia/mL concentration of positive fungal isolates along with natural
B. bassiana
was used against different stages of
R. ferrugineus
.
Rhynchophorus ferrugineus
larvae were supplied with synthetic diets that contain preservatives and non-preservatives. The fungal isolates BbSA-1 PDA-15 and MaSA-1 PDA-15 affected the egg hatchability and caused significant larval mortality of red palm weevil. It was shown that MaSA-1 PDA-15 is one of the most pathogenic fungi against
R. ferrugineus
larvae followed by BbSA-1 PDA-15 and Natural
B. bassiana
isolates. Therefore, these local fungal isolates have the potential to be used against
R. ferrugineus
. Further development in the research could facilitate the farmers to save their valuable palm trees from the notorious pest. |
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ISSN: | 1742-7584 1742-7592 1742-7592 |
DOI: | 10.1007/s42690-020-00141-8 |