We are broadly interested in various aspects regarding the evolutionary ecology of insect pest species. One of our primary research questions addresses the association of microbes with insects and their impact on the ecology and evolution of their hosts. Microbes have crucial impacts on the ecology and evolution of their host and are therefore important factors in their biology. We unravel factors influencing the diversity and distribution of symbionts in various insect systems and study their potential as an alternative approach for sustainable pest control.
One of our primary study systems has been two Tephritid fruit flies in the genus Rhagoletis that have recently invaded Europe. We characterize the endosymbionts of these two Rhagoletis species that attack cherries and walnuts and compare them with populations in their native ranges in the USA. This allows us to study the influence of the invasion process on the microbiome community of these flies and allows to study the influence of symbionts in the invasion success of their hosts.
Moreover, we study insect vectors of phytoplasma diseases. In particulate we study the tripartite interaction between the phytoplasma, the vector and its microbiome using a population genomic approach to address the question what causes different phytoplasma transmission efficiencies in insect vectors on two different pathosystems.
We are also performing phylogeographic and population genomic studies of spruce bark beetle species in Europe. Especially we investigate the associations of bark beetle populations with symbiontic bacteria and fungi to understand their role in the population dynamics of this important pest species.
Finally we study the invasion dynamics of invasive insect species. We are applying population genomic approaches to study the invasion with a particular focus on the role of bacterial symbionts in the invasion process as well as the response of native parasitoid species.
These research projects are addressed by a combination of genomic and population genomic approaches as well as in vivo experiments in laboratory and semi-field experiments. Our research combines fundamental and applied aspects of the biology of insect pest species with the orientation towards a more sustainable pest management.
Our lab is located at the Faculty of Agricultural, Environmental and Food Sciences at the Free University of Bozen-Bolzano. We are also member of the Competence Centre for Plant Health at the UniBZ.
We attended the CNIE 2025 in Siena, where Marta presented her work on the biology of the apricot aphid, Yuanjie spoke about the genomics of olive fly symbionts, Erika discussed her upcoming research on psyllid symbionts, Lapo presented on the genomics of the hawthorn psyllid, and Hannes talked about friends and foes of the bark beetle.
We had many great conversations with colleagues and enjoyed our time in Siena.
We celebrated the start of the summer with our traditional lab Barbecue.
Anna Michalik from Jagiellonian University in Poland visited us funded by a Erasmus+ project. It was great to discuss with Anna our projects and we are looking forward to continue our fruitful collaboration.
We are looking for a new postdoc to join our team. The position aims to study symbionts of bark beetles and psyllids
All documents for the application procedure can be found here:
https://www.unibz.it/en/home/position-calls/positions-for-academic-staff/7744-pflanzenpathologie-und-entomologie-prof-schuler-hannes?group=74
For informal inquiries, and for questions about the hiring process, please contact Hannes
Project 1 aims to investigate the impact and adaptation of non-native stinkbug parasitoids with a focus on molecular characterization of the parsitoid-host interaction.
Project 2 aims to investigate factors influencing the current outbreak of wooly apple aphids with a strong focus on multifactorial analyses of plant-insect interactions.
Both positions are funded for three years and will start in November 2025.
Deadline for applications is 11.06.2025 (noon).
All documents for the application procedure can be found here:
For informal inquiries, and for questions about the hiring process, please contact Hannes
Maja defended her PhD where she assessed the gut microbiome and the feeding host plants of the brown marmorated stink bug Halyomorpha halys. Maja joint the lab as Master student in 2021 and was a valuable member of the group for almost four years. In this time she acted as our master of ceremony, where she organized all our lab activities. Therefore, in this period she not only became a talented scientist, but also improved her skills on event management.
Juan defended his PhD on the microbiome and phylogeny of Scaphoideus titianus. Juan joint the lab in 2022 and enriched the lab with his South American charm.
Congratulations Maja and Juan, we will miss you a lot!
We have opened two new postdoc positions in our lab:
Position 1 aims to unravel the co-evolutionary dynamics between psyllids and their symbionts in collaboration with Michael Gerth, Martin Kaltenpoth and Liliya Serbina.
All documents for the application procedure can be found here:
Position 2 aims to investigate factors affecting transmission efficiency of Phytoplasma mali by the two main vectors Cacopsylla picta and Cacopsylla melanoneura by performing population genetic analyses of the insects and the phytoplasma.
The project is funded by a joint project of the Province of Bolzano and the Fonds National de la Recherche FNR, Luxembourg and is in close collaboration with Michael Eickermann and Wolfgang Jarausch.
All documents for the application procedure can be found here:
Last days before the Christmas break. Our lab members circadian clock is preparing for the Christmas break (a 2-week diapause), with some mulled wine, punsh and our traditional lab Christmas dinner.
Merry Christmas from the Schuler-Lab!
Giulia Calia successfully defended her PhD on "Bioinformatics and Machine learning approaches to study the characteristics of biotic and abiotic stress factor responses on plants". Gilia was co-supervised by Alessandro Cestaro (CNR) and Mirko Moser (Fondazione Edmund Mach San Michele), Katrin Janik (Research Centre Laimburg) and Silvia Bottini (INRAE France).
Congratulations, Giulia! And big thanks to all co-supevisors and the PhD committee members for the support. Giulia will soon start a postdoc position in INRAE France.
We are looking for a PhD student to joint our lab in fall 2024. The project is funded by the European social fund (ESF) and will focus on the endosymbiont Wolbachia in fruit flys and psyllids. We will perform comparative genome sequencing of Wolbachia as well as ecological experiments to investigate the effect of this symbiont on the host.
All informations can be found here and here.
For further information, just contact me.
We are said to announce that Liliya left the group and joint the Naturmuseum Berlin where she will work as a curator on her beloved psyllids. Liliya, we will miss you but are happy to continue our fruitful collaboration.
We are happy to announce that Veronika Rau, Yuanjie Li and Luciano Palmieri joint the group as postdocs. They will work on various projects on our bark beetle and fruit fly projects.
Marta Chignola and Filippo Rey are joining the group as PhD students. Marta will study the invasive apricot aphid Myzus mumecola, Filippo will investigate the microbial composition of the sooty blotch of apples. Both positions are in collaborations with colleagues at the Research Centre Laimburg.
We just got selected by the Reference genome atlas to sequence the genome of one of our study systems. Yeah! Lapo Ragionieri joined to group as new postdoc. He will lead the whole genome sequencing project of Scaphoideus titanus.
We welcomed our new members with a typical South Tyrolean Törgellen.
Our lab attended the European Conference of Entomology ECE2023 in Crete. Maja presented a talk about the feeding behaviour of her bugs, Juan presented his data on the haplotype diversity of Scaphoideus titanus, Erika presented her outcome on the dual symbionts in Cacopsylla spp. and Hannes had a keynote talk about the infection dynamics of Wolbachia in cherry fruit flies. We had a great time in Crete. Lots of great discussions, good food and several Ouzos.
What a week! Last week we published three papers: Jessica's metagenomic study about the dual symbiosis of psyllids was published in mSystems, Liliya's story about the seasonal wild dance of these two symbionts in Scientific Reports and Erika's work on the factors driving the phytoplasma aquisition efficiency of Cacopsylla melanoneura was published in the Journal of Pest Science. Big effort, great team, happy to celebrate it!
Marta Chignola just defended her master thesis on the feeding behaviour of the Brown marmorated stink bug Halyomorpha halys. She did an excellent job applying a molecular gut analysis to assess the feeding behaviour of this polyhagous pest. I'm happy to announce that Marta will soon start as a PhD student in my lab.
A new postdoc position is available in our Competence Centre for Plant Health. In this project we are looking for a postdoc with a specific focus on the invasion dynamics of invasive species. Information regarding the application can be found here.
We are also looking for two PhD students. One project aims to characterize the composition of the microbial community of the apple sooty blotch complex, whereas the other project aims to investigate the biology of the invasive apricot aphid Myzus mumecola. Both positions are in collaboration with the Research Centre Laimburg. All information on the application process can be found here.
For further information, just contact me.
We are looking for a postdoc to study the European spruce bark beetle and its association with bacteria and fungi as well as nematodes and mites.
All information can be found at https://www.unibz.it/en/home/position-calls/positions-for-academic-staff/6298-general-and-applied-entomology-prof-hannes?group=18
For further information, just contact me.
We are attending several conferences this year: Maja and Moussa are presenting at the AISSA under 40 in Bolzano, Liliya and Moussa at the International Congress of Entomology in Helsinki, Jessica and Hannes at the Holobiont conference in Lyon, Erika, Thomas and James at the Congress of the European Society for Evolutionary Biology in Prague and Juan at the Applied Hologenomics Conference in Bilbao. We are all looking forward to finally meet in presence!
Liliya's paper about the microbiome in pear psyllids is on the cover of the latest issue of Environmental Microbiology!
With mixed feelings we have to announce that Jessica is leaving the lab. Jessica, congratulations on your new job at INRAE in Angers (France), but we will miss you here in Bolzano!
We are happy to announce that Maja and Juan join our group as PhD student. Maja is going to study the Marmorated stink bug Halyomorpha halys and it's friends and foes in the invasive range in South Tyrol, Juan will investigate vectors of Flavescence dorèe and their symbionts. Welcome Maja and Juan!
For our FIGHToplasma project we are looking for an enthusiastic postdoc (or about to be) to study the genomics of psyllids and their symbionts. The project is in collaboration with Christian Stauffer (Boku Vienna), Katrin Janik (Research Centre Laimburg) Rosemarie Tedeschi (Uni Torino) and Omar Rota-Stabelli (Fondazione Edmund Mach) and aims to study the phytoplasma transmission pathway using a population genetic sequencing approach.
All information can be found at https://www.unibz.it/en/home/position-calls/positions-for-academic-staff/5690-allgemeine-und-angewandte-entomologie-prof-schuler?group=18
For further informations, please let me know.
We have a funded PhD position available! The project is in collaboration with Katrin Janik (Research Centre Laimburg) and Mirko Moser and Alessandro Cestaro (Fondazione Edmund Mach) and aims to study the interaction of ‘Candidatus Phytoplasma vitis’ and its main insect vector Scaphoideus titanus through whole-genome sequencing.
All information can be found here
For further information, please let me know.
I am very excited to announce that I'm officially tenured at the Free University of Bolzano. Big thank you to my mentors and fantastic colleagues, team members and collaboration partners and to my family for your constant support during the last years!
Abd El-Hameed Moussa just joined our group as a new Postdoctoral Fellow. Moussa will be part of the Competence Centre for Plant Health and will study bacterial symbionts of bark beetles and leafhoppers.
Gul-I-Rayna-Shahzad joins our lab as Postdoc and will investigate the association of bark beetles and fungi in the Dolomites. This position is funded by Interreg V-A Italy-Austria 2014-2020 CLLD Dolomiti Live.
For our new DolomIps project we are looking for an enthusiastic candidate with a strong background in molecular biology and experience in bioinformatic analyses of bacterial and/or fungal communities associated with insects.
All documents for the application procedure can be found here.
Liliya Serbina just joined our group as a new Postdoctoral Fellow. The next two years Liliya will study the microbiome of pear psyllids and its role in the transmission of phytoplasmas. This position is funded with the mobility grant by the Province of Bolzano. Welcome Liliya!
Maja Fluch joins the lab as Masterstudent to investigate the prasitoid community of the Brown marmorated stink bug Halyomorpha halys in South Tyrol. Maja's tesis will be co-advised with Martina Falagiarda from Research Centre Laimburg.
Thomas' and Dan's paper on comparative genome sequencing of Wolbachia in cherry fruit flies was accepted for publication in Molecular Ecology in the special issue The use of whole-genome sequences in Molecular Ecology!
Thomas presented our work Revisiting Wolbachia diversity between invasive and native Rhagoletis cherry fruit flies in the light of comparative genomics at the 54th Population Genetics Group Meeting hosted by the University of Liverpool.
Michael Gerth and I are editing a special issue of the open access journal Insects (ISSN 2075-4450, IF 2.139) entitled "Insect Symbionts: Evolution and Application". We welcome submissions covering the whole spectrum of insect–symbiont interaction, such as occurrence and diversity of insect symbionts, symbiont-induced host evolution, symbiont evolution within insects, and the usage of symbionts to combat insect pests.
For more information on the issue, please visit the Special Issue website.
If you are interested to contribute please send us a short abstract or tentative title.