Publicação
Fungal associates of Xylosandrus germanus and other Scolytinae in Switzerland
| Resumo: | Many ambrosia beetles and bark beetles are known to be associated with a suite of fungi and other microorganisms that are symbiotic or coincidental. Some of these may be plant pathogens that could cause diseases in affected trees. This issue has not been studied much in Switzerland. In this study, we are investigating, trap and lure efficiency, phenology and which fungi and other organisms are present externally and internally on the non-native Xylosandrus germanus and several native Scolytinae, alongside a new discovered specie in Swiss territory. I collected Scolytinae in three different regions in Switzerland, north of the Alps, in the central Alps and south of the Alps, using flight interception traps baited with ethanol, log sections baited with ethanol and collecting from naturally infested wood. To determine which microorganisms are associated with the various beetle species, beetles were allowed to walk over selective agar media, pressed into agar and plated out on agar after maceration. My results show that more non-native species are being introduced into Switzerland. Anisandrus maiche, is here reported for the first time on Swiss territory. This new species was one of the most common Scolytinae along with another non-native invasive species, Xylosandrus germanus and the native Xyleborinus saxesenii. The two non-native ambrosia beetles were very abundant, frequently more abundant than native ambrosia beetle, showing its considerable invasion potential. This pattern was not observed in bark beetles, all of these were native species. Furthermore, my study showed which species of ambrosia fungi and other fungi are associated with the most common ambrosia beetles for Switzerland territory and with some bark beetle species collected. |
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| Autores principais: | Correia, José Pedro Ribeiro |
| Assunto: | Ambrosia beetles bark beetles forest insects insect-fungus associations pathogen vectors tree pathogens Escolitídeos insetos florestais vetores patogénicos fungos patogénicos simbiose inseto-fungo |
| Ano: | 2022 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | Many ambrosia beetles and bark beetles are known to be associated with a suite of fungi and other microorganisms that are symbiotic or coincidental. Some of these may be plant pathogens that could cause diseases in affected trees. This issue has not been studied much in Switzerland. In this study, we are investigating, trap and lure efficiency, phenology and which fungi and other organisms are present externally and internally on the non-native Xylosandrus germanus and several native Scolytinae, alongside a new discovered specie in Swiss territory. I collected Scolytinae in three different regions in Switzerland, north of the Alps, in the central Alps and south of the Alps, using flight interception traps baited with ethanol, log sections baited with ethanol and collecting from naturally infested wood. To determine which microorganisms are associated with the various beetle species, beetles were allowed to walk over selective agar media, pressed into agar and plated out on agar after maceration. My results show that more non-native species are being introduced into Switzerland. Anisandrus maiche, is here reported for the first time on Swiss territory. This new species was one of the most common Scolytinae along with another non-native invasive species, Xylosandrus germanus and the native Xyleborinus saxesenii. The two non-native ambrosia beetles were very abundant, frequently more abundant than native ambrosia beetle, showing its considerable invasion potential. This pattern was not observed in bark beetles, all of these were native species. Furthermore, my study showed which species of ambrosia fungi and other fungi are associated with the most common ambrosia beetles for Switzerland territory and with some bark beetle species collected. |
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