About


I am an agricultural and ecological entomologist working to increase crop and plant health resilience in natural ecosystems.

I currently lead the entomology and vector team (~16 members) at the Agri-Food and Biosciences Institute, the arms-length public sector research body of the Department of Agriculture, Environment, and Rural Affairs in Northern Ireland. Here I oversee the delivery of a statutory scientific work programme covering crop, plant, animal, and environment health; this includes delivery of the Northern Ireland pesticide usage survey, plant health surveillance, livestock vector monitoring, and the Northern Ireland protected zone survey. In addition to the statutory work programme, the team also delivers a suite of research projects centred on vector biology, biological modelling, optimisation of monitoring & surveillance methods, and chemical ecology.

As an expert in agricultural entomology, ecological entomology, and crop health I hold an editor-in-chief position at the Royal Entomological Society's journal Agricultural and Forest Entomology, sit as a committee member for the UK Insecticide Resistance Action Group, and on the Wheat Initiative's Expert Working Group on Wheat Pests.


Background.
I was awarded my PhD in 2019 from The University of Dundee. My PhD research focused on investigating how drought stress affects the plant-aphid relationship. With a sub-focus examining how aphid endosymbionts influence aphid behaviour and success.

In September 2019 I took up an Entomology position at the agriculture and environment consultancy organisation, RSK ADAS Ltd. Here I contributed to numerous research projects to develop sustainable methods for herbivorous insect management. Key projects include insecticide resistance monitoring, herbivorous insect population modelling, and developing novel  image-analysis methods to support insect identification.

In 2021 I secured an Alexander von Humboldt Postdoctoral Research Fellowship and moved to the Institute of Geobotany at Leibniz University of Hannover in Germany. Here my research  investigated how the structure and composition of the agricultural landscape affects intra-specific diversity (e.g. genotype, endosymbiont presence) in cereal aphids and the cabbage stem flea beetle. The overall aim of these projects were to highlight ecological links between landscape diversity and endosymbiont communities within important herbivorous insect species.

Following my Humboldt Fellowship I was awarded a Research Fellowship from the Royal Commission for the Exhibition of 1851 and moved to the University of Liverpool. At Liverpool my research aimed to  identify and characterise factors that underpin virus and vector success in agricultural ecosystems, focusing on cereal aphids and barley yellow dwarf virus. I also secured additional funding via Innovate UK for the development of an AI-driven tool to support on-farm sustainable pest management.

Collaborators and partners:
Throughout my career I have worked with multiple partners across academia and industry, with collaborators based in the UK, Ireland, Germany, Chile, and Argentina. 

Recent collaborators at academic and research institutions include: Sharon Zytynska (The University of Manchester, UK), Po Yang (The University of Sheffield, UK), Jorunn Bos (The University of Dundee, UK), Tom Pope & Joe Roberts (Harper Adams University), Katharine Preedy (Biomathematics and Statistics Scotland, UK), Stephen Byrne & Louise Mc Namara (Teagasc, Ireland),  Emily Martin (Justus Liebig University Giessen, Germany), Torsten Will (The Julius Kühn-Institut, Germany), Claudio Ramirez (The University of Talca, Chile), and Pedro Gundel (The University of Buenos Aires, Argentina).

I also work with partners based in industry and third-sector organisations, including: Nasamu Musa & Mark Ramsden (RSK ADAS Ltd, UK), Sacha White (The Agriculture and Horticulture Development Board, UK), and Tim Li (Mutus Tech Ltd, UK).

Recent Publications


Pest management in potato: crop physiology, thresholds, and decision support for sustainable crop protection


N Musa, J Humphrey, T Fitters, S Ellis, T Fleming, DJ Leybourne

Crop Protection, vol. 211, 2027, p. 107871


Competency for Yellow Dwarf Virus Transmission in the Rose-Grain Aphid, Metopolophium dirhodum, Is Driven by Virus Species Not Vector Genotype


Daniel J. Leybourne, Md Munir Mostafiz, Elinor Baird, Virgile Ballandras, Maximilian Schughart, Louise McNamara, Stephen Byrne

Plant Pathology, vol. 75, 2026, pp. e70182



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Recent Projects


Elucidating the agro-ecological factors influencing virus success in cereal ecosystems (Royal Commission for the Exhibition of 1851; 1851 Research Fellowship; 2022 - 2025; PI; Liverpool University)


This project will use an important virus-insect-crop system and will identify factors that influence virus success in agricultural ecosystems. Click the link above for a project overview.


Adaptive AI-enabled and context-enhanced mobile intelligence for climate-smart pest management to optimise sustainable and resilient farming (Innovate UK; Farming Innovations Pathway Grant; 2023-2024; Co-I; Liverpool University)


Led by Mutus Tech Ltd. in collaboration with Sheffield University and ADAS. The project aims to further develop our smart herbivorous insect management system. Click the link above to see a project description, updates, and publications.


The Agricultural Landscape and Arthropod biodiversity Nexus: ALAN (The Alexander von Humboldt Foundation; Postdoctoral Research Fellowship; 2021-2022; PI; Hannover University)


This project will use a model insect system and investigate the relationship between insect intra-species diversity, multi-trophic interactions, and landscape diversity. Click the link above to see a project description, updates, and publications.


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