Finbarr Horgan

  • About

  • Related items

Finbarr Horgan with Achim Dobermann and Leigh Vial

Finbarr is a terrestrial ecologist whose research focused on maintaining or improving rice ecosystem health through conservation of beneficial species and enhancement of rice ecosystem functions.

Finbarr led research into landscape applications for improved rice ecosystem health. His group engaged in multidisciplinary, holistic approaches for maintaining biodiversity in rice ecosystems and enhancing the natural regulation of herbivore populations by beneficial predators and parasitoids. This work included selection and proper deployment of herbivore resistant and tolerant rice varieties, design of agro-ecological and ecologically engineered rice production systems, and adaptation of rice crop management practices to specific landscapes and regions.


  • Insect community and population ecology
  • Ecosystem functioning
  • Conservation agriculture
  • Biodiversity monitoring
  • Plant resistance to insects


  • PhD in Ecology, University of New Brunswick, Canada (2003)
  • MSc in Animal Ecology, University of British Columbia, Canada (1993)


  • Senior Scientist – Insect Ecology, IRRI (2012-2016)
  • Scientist – Insect Ecology, IRRI (2008-2012)
  • Scientist, Teagasc Irish Agri-research and Advisory Authority, Carlow, Ireland (2004-2008)
  • Research assistant, University of New Brunswick-Centro Internacional de la Papa, Lima, Peru (2000-2004)
  • Special Service Overseas, URACCAN, Bluefields, Nicaragua (1999)
  • Leader for environmental education, Familia Franciscana Unida, San Salvador, El Salvador (1997-1998)
  • Lecturer, Universidad de El Salvador, San Salvador, El Salvador (1994-1997)


  • Post-graduate Fellowship, UBC (1990-1993)
  • Finish Government Scholarship (1989-1990)
  • O’ Rourke Prize, UCC (1987 & 1988)
  • College Scholar, UCC (1987)


  1. Ferrater J.B., Naredo A.I., Almazan M.L.P., de Jong P.W., Dicke M., Horgan F.G. 2015. Varied responses by yeast-like symbionts to virulence adaptation in a monophagous phloem-feeding insect. Arthropod-Plant Interactions (in press)
  2. Fujita D., Kohli A., Horgan F.G. 2013. Rice resistance to planthoppers and leafhoppers. Critical Reviews in Plant Sciences 32:162-191.
  3. Horgan F.G. 2012. Diversity and defence: plant-insect interactions at multiple scales and trophic levels. In Gurr GM, Wratten SD, Snyder WE, Read DMY (eds.) Biodiversity and insect pests: Key issues for sustainable management. John Wiley and Sons. UK, Pp 241-258
  4. Horgan F.G., Crisol E. 2013. Hybrid rice and insect herbivores in Asia. Entomologia Experimentalis et Applicata 148: 1-19.
  5. Horgan F.G., Felix M.I., Portalanza D.E., Sánchez L., Moya Rios W.M., Farah S.E., Wither J.A., Andrade C.I., Espin E.B. 2014. Responses by farmers to the apple snail invasion of Ecuador’s rice fields and attitudes toward predatory snail kites. Crop Protection 62:135-143.
  6. Horgan F.G., Stuart A.M., Kudavidanage E.P. 2014. Impact of invasive apple snails on the functioning and services of natural and managed wetlands. Acta Oecologica 54:90-100.
  7. Horgan F.G., Yanes Figueroa J., Almazan M.L.P. 2014. Seedling broadcasting as a potential method to reduce apple snail damage to rice. Crop Protection 64:168-174.
  8. Murray T.E., Coffey M.F., Kehoe E., Horgan F.G. 2013. Pathogen prevalence in commercially reared bumble bees and evidence of spillover in conspecific populations. Biological Conservation 159:269-276.
  9. Nadeau P., Thibault M., Horgan F.G., Michaud J.P., Gandiaga F., Comeau C., Moreau G. 2015. Decaying matters: Coleoptera involved in heterotrophic systems. Beetles: Biodiversity, Ecology and Role in the Environment. Nova Publisher, NY, (in press).
  10. Savary S., Horgan F.G., Willocquet L., Heong K.L. 2012. A review of principals for sustainable pest management in rice. Crop Protection 32:54-63.