Iridoviruses Biology and ecology of baculoviruses Virus insecticides Spinosad Mosquitoes, blackflies, and ticks Predators, parasitoids, pathogens Others Students


Trevor Williams, página personal en español


Baculovirus-based insecticides - the Spodoptera exigua multiple nucleopolyhedrovirus (SeMNPV).

Research topics

  • Biological control of insect pests and vectors of medical importance.

  • Ecology of insect pathogenic viruses, especially baculoviruses and iridoviruses.

  • The use of insect viruses as biological insecticides and the biorational insecticide spinosad.

  • Interactions between biopesticides and other insect natural enemies.

  • The biology and ecology of insect natural enemies.


Trevor Williams homepage: biological insecticides, ecology of insect pathogenic viruses....

Bioassay of an invertebrate iridovirus (iridescent virus) in Galleria mellonella larvae.

Other activities

  • Member of the study group on Iridoviridae for the International Committee on Taxonomy of Viruses (ICTV).

  • Sistema Nacional de Investigadores, Mexico (level III).

  • Fellow of the Royal Entomological Society, London.

  • Member of the Society for Invertebrate Pathology.



 Contact information:

March 2022


Arrizubieta, M., Simón, O., Ricarte-Bermejo, A., López-Ferber, M., Williams, T. & Caballero, P. (2022) Coocclusion of Helicoverpa armigera single nucleopolyhedrovirus (HearSNPV) and Helicoverpa armigera multiple nucleopolyhedrovirus (HearMNPV): pathogenicity and stability in homologous and heterologous hosts. Viruses 14, 687.


PDF reprint


August 2022


Velasco, E.A., Molina-Ruíz, C.S., Gómez-Díaz, J.S. & Williams, T. (2022) Properties of nucleopolyhedrovirus occlusion bodies from living and virus-killed larvae of Spodoptera frugiperda (Lepidoptera: Noctuidae). Biological Control 174, 105008.


Free access from journal

Instituto de Ecología AC (INECOL)

Carretera Antigua a Coatepec 351

Xalapa 91073

Estado de Veracruz


Tel: (+52) 228 842 18 00 ext. 4105




INECOL website and INECOL magazine
(in Spanish)



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