The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus
The bean bruchid, Acanthoscelides obtectus is a major threat to bean production. In Ethiopia, where this study was performed, the damage by bruchids on stored beans has been reported to reach up to 38%. To use the isolates Beauveria bassiana and Metarhizium anisopliae in the management of A. obtectu...
| Autores principales: | , |
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| Formato: | First cycle, G2E |
| Lenguaje: | sueco Inglés |
| Publicado: |
2011
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| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/2178/ |
| _version_ | 1855570399006294016 |
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| author | Grund, Julia Hirsch, Lina |
| author_browse | Grund, Julia Hirsch, Lina |
| author_facet | Grund, Julia Hirsch, Lina |
| author_sort | Grund, Julia |
| collection | Epsilon Archive for Student Projects |
| description | The bean bruchid, Acanthoscelides obtectus is a major threat to bean production. In Ethiopia, where this study was performed, the damage by bruchids on stored beans has been reported to reach up to 38%. To use the isolates Beauveria bassiana and Metarhizium anisopliae in the management of A. obtectus can be an environmentally safe alternative for controlling the pest. In the present work the aim was to examine if the four chosen fungal isolates, B. bassiana DLCO 43 and M. anisopliae DLCO 91, 76, 28, would provide an effective way of managing A. obtectus. To test the impact of each of the fungal isolates on A. obtectus mortality, insects were placed in a Petri dish and sprayed with the spore solutions in three concentrations; 1x105, 1x106 and 1x107 conidia/ml. All the fungal isolates had a high level of mycosis, ranging from 85-97%, meaning that a majority of the dead insects died of fungal infection. The control group had 0% in the mycosis test. The results show that all the fungal isolates, but especially the Metarhizium isolates, are effective against A. obtectus and achieve a high mortality. |
| format | First cycle, G2E |
| id | RepoSLU2178 |
| institution | Swedish University of Agricultural Sciences |
| language | swe Inglés |
| publishDate | 2011 |
| publishDateSort | 2011 |
| record_format | eprints |
| spelling | RepoSLU21782012-04-20T14:17:23Z https://stud.epsilon.slu.se/2178/ The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus Grund, Julia Hirsch, Lina Agricultural research Protection of plants - General aspects Pests of plants The bean bruchid, Acanthoscelides obtectus is a major threat to bean production. In Ethiopia, where this study was performed, the damage by bruchids on stored beans has been reported to reach up to 38%. To use the isolates Beauveria bassiana and Metarhizium anisopliae in the management of A. obtectus can be an environmentally safe alternative for controlling the pest. In the present work the aim was to examine if the four chosen fungal isolates, B. bassiana DLCO 43 and M. anisopliae DLCO 91, 76, 28, would provide an effective way of managing A. obtectus. To test the impact of each of the fungal isolates on A. obtectus mortality, insects were placed in a Petri dish and sprayed with the spore solutions in three concentrations; 1x105, 1x106 and 1x107 conidia/ml. All the fungal isolates had a high level of mycosis, ranging from 85-97%, meaning that a majority of the dead insects died of fungal infection. The control group had 0% in the mycosis test. The results show that all the fungal isolates, but especially the Metarhizium isolates, are effective against A. obtectus and achieve a high mortality. Acanthoscelides obtectus är ett av de allvarligaste hoten mot produktionen av bönor. I Etiopien, där denna studie har utförts, har de skador som A. obtectus gör på lagrade bönor rapporterats nå upp till 38%. Att använda svampisolaten Beauveria bassiana och Metarhizium anisopliae for att bekämpa A. obtectus kan vara ett effektivt och miljövänligt alternativ. I det aktuella arbetet var syftet att undersöka om de fyra svampisolaten, B. bassiana DLCO 43 och M. anisopliae DLCO 91, 76, 28, skulle vara ett effektivt sätt att bekämpa A. obtectus. För att testa effekten av varje svampisolat på A. obtectus dödlighet, placerades insekterna i Petriskålar och sprayades med sporlösningar i tre koncentrationer, 1x105, 1x106 and 1x107 konidier/ml. Alla svampisolaten hade en hög nivå av mykos, från 85 till 97%, vilket innebär att en majoritet av de döda insekter dog av svampinfektion. Kontrollgruppen hade 0% i mykostestet. Resultaten visar att samtliga svampisolat, särskilt Metarhizium-isolaten, är effektiva mot Acanthoscelides obtectus och uppnår en hög dödlighet. 2011-01-19 First cycle, G2E NonPeerReviewed application/pdf swe https://stud.epsilon.slu.se/2178/1/Hirsch_et_al_110119.pdf Grund, Julia and Hirsch, Lina, 2010. The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus. First cycle, G2E. Alnarp: (LTJ, LTV) > Dept. of Plant Protection Biology <https://stud.epsilon.slu.se/view/divisions/4809.html> urn:nbn:se:slu:epsilon-4-371 eng |
| spellingShingle | Agricultural research Protection of plants - General aspects Pests of plants Grund, Julia Hirsch, Lina The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus |
| title | The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus |
| title_full | The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus |
| title_fullStr | The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus |
| title_full_unstemmed | The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus |
| title_short | The potential of entomopathogenic fungal isolates as an environmentally friendly management option against Acanthoscelides obtectus |
| title_sort | potential of entomopathogenic fungal isolates as an environmentally friendly management option against acanthoscelides obtectus |
| topic | Agricultural research Protection of plants - General aspects Pests of plants |
| url | https://stud.epsilon.slu.se/2178/ https://stud.epsilon.slu.se/2178/ |