| Iridoviruses | Ecology of baculoviruses | Virus insecticides | Spinosad | Mosquitoes blackflies & ticks | Predators, parasitoids, pathogens | Others | Students |  | |
Publications on Baculovirus Biology & Ecology (back to Trevor Williams homepage) | |||||||||
Goulson, D., Hails, R.S., Williams, T., Hirst, M.L., Vasconcelos, S.D., Green, B.M., Carty, T.M. & Cory, J.S. (1995) Transmission dynamics of a virus in a stage-structured insect population. Ecology 76, 392-401. | |||||
Vasconcelos, S.D., Williams, T., Hails, R.S. & Cory, J.S. (1996) Prey selection and baculovirus dissemination by carabid predators of Lepidoptera. Ecological Entomology 21, 98-104. | |||||
Richards, A., Cory, J., Speight, M. & Williams, T. (1999) Foraging in a pathogen reservoir can lead to local host population extinction: a case study of a Lepidoptera-virus interaction. Oecologia 118, 29-38. | |||||
Chapman, J.W., Williams, T., Escribano, A., Caballero, P., Cave, R.D. & Goulson, D. (1999) Age-related cannibalism and horizontal transmission of a nuclear polyhedrosis virus in larval Spodoptera frugiperda. Ecological Entomology 24, 268-275. (See Others section for additional studies on cannibalism) | |||||
Escribano, A., Williams, T., Goulson, D., Cave, R.D. & Caballero, P. (2000) Parasitoid-pathogen-pest interactions of Chelonus insularis, Campoletis sonorensis and a nucleopolyhedrovirus in Spodoptera frugiperda larvae. Biological Control 19, 265-273. | |||||
Escribano, A., Williams, T., Goulson, D., Cave, R.D., Chapman, J.W. & Caballero, P. (2000) Effect of parasitism on a nucleopolyhedrovirus amplified in Spodoptera frugiperda larvae parasitized by Campoletis sonorensis. Entomologia Experimentalis et Applicata 97, 257-264. | |||||
Castillejos, V., García, L., Cisneros, J., Goulson, D., Caballero, P., Cave, R.D. & Williams, T. (2001) The potential of Chrysoperla rufilabris and Doru taeniatum as agents for dispersal of Spodoptera frugiperda nucleopolyhedrovirus in maize. Entomologia Experimentalis et Applicata 98, 353-359. | |||||
Escribano, A., Williams, T., Goulson, D., Cave, R.D., Chapman, J.W. & Caballero, P. (2001) Consequences of interspecific competition on the virulence and genetic composition of a nucleopolyhedrovirus in Spodoptera frugiperda larvae parasitized by Chelonus insularis. Biocontrol Science & Technology 11, 649 - 662. | |||||
Vasconcelos, S.D., Cory, J.S., Speight, M.R. & Williams, T. (2002) Host stage structure and baculovirus transmission in Mamestra brassicae L. (Lepidoptera: Noctuidae) larvae: a laboratory examination of small scale epizootics. Neotropical Entomology 31, 391-396. | |||||
López-Ferber, M., Simón, O., Williams, T., & Caballero, P. (2003) Defective or effective? Mutualistic interactions between virus genotypes. Proceedings of the Royal Society B: Biological Sciences 270, 2249-2255. | |||||
Simón, O., Williams, T., López-Ferber, M., & Caballero, P. (2004) Genetic structure of a Spodoptera frugiperda nucleopolyhedrovirus population: high prevalence of deletion genotypes. Applied & Environmental Microbiology 70, 5579-5588. | |||||
Simón, O., Williams, T., López-Ferber, M., & Caballero, P. (2004) Virus entry or the primary infection cycle are not the principal determinants of host specificity of Spodoptera spp. nucleopolyhedroviruses. Journal of General Virology 85, 2845-2855. | |||||
Simón, O., Gutiérrez, S., Williams, T., Caballero, P. & López-Ferber, M. (2005) Nucleotide sequence and transcriptional analysis of the pif gene of Spodoptera frugiperda nucleopolyhedrovirus (SfMNPV). Virus Research 108, 213-220. | |||||
Simón, O., Chevenet, F., Williams, T., Caballero, P. & López-Ferber, M. (2005) Physical and partial genetic map of Spodoptera frugiperda nucleopolyhedrovirus (SfMNPV) genome. Virus Genes 30, 403-417. | |||||
Simón, O., Williams, T., López-Ferber, M. & Caballero, P. (2005) Functional importance of deletion mutant genotypes in an insect nucleopolyhedrovirus population. Applied & Environmental Microbiology 71, 4254-4262. | |||||
Martínez, A.M., Williams, T., López-Ferber, M. & Caballero, P. (2005) Optical brighteners do not influence covert baculovirus infection of Spodoptera frugiperda. Applied & Environmental Microbiology 71, 1668-1670. | |||||
Simón, O., Williams, T., Caballero, P. & López-Ferber, M. (2006) Dynamics of deletion genotypes in an experimental insect virus population. Proceedings of the Royal Society B: Biological Sciences 273, 783-790. | |||||
Murillo, R., Muñoz, D., Williams, T., Mugeta, N. & Caballero, P. (2006) Application of the PCR-RFLP method for the rapid differentiation of Spodoptera exigua nucleopolyhedrovirus genotypes. Journal of Viological Methods 135, 1–8 | |||||
Murillo, R., Elvira, S., Muñoz, D., Williams, T., & Caballero, P. (2006) Genetic and phenotypic variability in Spodoptera exigua nucleopolyhedrovirus isolates from greenhouse soils in southern Spain. Biological Control 38, 157-165. | |||||
Christian, P., Richards, A.R. & Williams, T. (2006) Differential adsorption of occluded and non-occluded insect pathogenic viruses to soil forming minerals. Applied & Environmental Microbiology 72, 4648-4652. | |||||
Murillo, R., Muñoz, D., Ruíz-Portero, M.C., Alcázar, M.D., Belda, J.E., Williams, T. & Caballero, P. (2007) Abundance and genetic structure of nucleopolyhedrovirus populations in greenhouse substrate reservoirs. Biological Control 42, 216-225. | |||||
Simón, O., Williams, T., Cabrera-Asensio, A., Ros, S., Gaya, A., Caballero, P. & Possee, R.D. (2008) Sf29 gene of Spodoptera frugiperda multiple nucleopolyhedrovirus is a viral factor that determines the number of virions in occlusion bodies. Journal of Virology 82, 7897-7904. | |||||
Clavijo, G., Williams, T., Simón, O., Muñoz, D., Cerutti, M., López-Ferber, M. & Caballero, P. (2009) Mixtures of complete and pif1- and pif2-deficient genotypes are required for increased potency of an insect nucleopolyhedrovirus. Journal of Virology 83, 5127-5136. | |||||
Clavijo, G., Williams, T., Muñoz, D., López-Ferber, M. & Caballero, P. (2009). Entry into midgut epithelial cells is a key step in the selection of genotypes in a nucleopolyhedrovirus. Virologica Sinica 24, 350-358. | |||||
Simón, O., Williams, T., Possee, R.D., López-Ferber, M. & Caballero, P. (2010) Stability of a Spodoptera frugiperda nucleopolyhedrovirus deletion recombinant during serial passage in insects. Applied & Environmental Microbiology 76, 803-809. | |||||
Clavijo, G., Williams, T., Muñoz, D., Caballero, P. & López-Ferber, M. (2010) Mixed genotype transmission bodies and virions contribute to the maintenance of diversity in an insect virus. Proceedings of the Royal Society B: Biological Sciences 277: 943-951. | |||||
Cabodevilla, O., Ibañez, I., Simón, O., Murillo, R., Caballero, P. & Williams, T. (2011) Occlusion body pathogenicity, virulence and productivity traits vary with transmission strategy in a nucleopolyhedrovirus. Biological Control 56, 184-192. | |||||
Simón, O., Palma, L., Beperet, I., Muñoz, D., López-Ferber, M., Caballero, P. & Williams, T. (2011) Sequence comparison between three geographically distinct Spodoptera frugiperda multiple nucleopolyhedrovirus isolates: detecting positively selected genes. Journal of Invertebrate Pathology 107, 33-42. | |||||
Cabodevilla, O., Villar, E., Virto, C., Murillo, R., Williams, T. & Caballero, P. (2011) Intra- and intergenerational persistence of an insect nucleopolyhedrovirus: adverse effects of sublethal disease on host development, reproduction and susceptibility to superinfection. Applied and Environmental Microbiology 77, 2954-2960. | |||||
Simón, O., Palma, L., Williams, T., López-Ferber, M., & Caballero, P. (2012) Analysis of a naturally-occurring deletion mutant of Spodoptera frugiperda multiple nucleopolyhedrovirus reveals sf58 as a new per os infectivity factor of lepidopteran-infecting baculoviruses. Journal of Invertebrate Pathology 109, 117-126. | |||||
Stoianova, E., Williams, T., Cisneros, J., Muñoz, D., Murillo, R., Tasheva, E. & Caballero, P. (2012) Interactions between an ectoparasitoid and a nucleopolyhedrovirus when simultaneously attacking Spodoptera exigua (Lepidoptera: Noctuidae). Journal of Applied Entomology 136, 596–604. | |||||
Simón, O., Williams, T., López-Ferber, M. & Caballero, P. (2012) Deletion of egt is responsible for the fast-killing phenotype of natural deletion genotypes in a Spodoptera frugiperda multiple nucleopolyhedrovirus population. Journal of Invertebrate Pathology 111, 260–263. | |||||
Serrano, A., Williams, T., Simón, O., López-Ferber, M., Caballero, P. & Muñoz, D. (2013) Analagous population structures in two alphabaculoviruses highlight functional role for deletion mutants. Applied & Environmental Microbiology 79, 1118–1125. | |||||
Virto, C., Zárate, CA., López-Ferber, M., Murillo, R., Caballero, P. & Williams, T. (2013) Gender-mediated differences in vertical transmission of a nucleopolyhedrovirus. PLoS ONE 8, e70932. | |||||
Barrera, G., Williams, T., Villamizar, L., Caballero, P. & Simón, O. (2013) Deletion genotypes reduce occlusion body potency but increase occlusion body production in a Colombian Spodoptera frugiperda nucleopolyhedrovirus population. PLoS ONE 8, e77271. | |||||
Beperet, I., Barrera, G., Simón, O., Williams, T., López-Ferber, M., Gasmi, L., Herrero, S. & Caballero, P. (2013) The sf32 unique gene of Spodoptera frugiperda multiple nucleopolyhedrovirus (SfMNPV) is a non-essential gene that could be involved in nucleocapsid organization in occlusion-derived virions. PLoS ONE 8, e77683. | |||||
Simón, O., Williams, T., Cerutti, M., Caballero, P. & López-Ferber, M. (2013) Expression of a peroral infection factor determines pathogenicity and population structure in an insect virus. PLoS ONE 8, e78834. | |||||
Bernal, A., Simón, O., Williams, T., Muñoz, D, & Caballero, P. (2013) A Chrysodeixis chalcites single-nucleocapsid nucleopolyhedrovirus population from the Canary Islands is genotypically structured to maximize survival. Applied & Environmental Microbiology 79, 7709–7718. | |||||
Beperet, I., Irons, S., Simón, O., King, L.A., Williams, T., Possee, R.D., López-Ferber, M., & Caballero, P. (2014) Superinfection exclusion in alphabaculovirus infections is concomitant with actin reorganization. Journal of Virology 88, 3548–3556. | |||||
Virto, C., Navarro, D., Tellez, M.M., Herrero, S., Williams, T., Murillo, R., & Caballero, P. (2014) Natural populations of Spodoptera exigua are infected by multiple viruses that are transmitted to their offspring. Journal of Invertebrate Pathology 122, 22–27. | |||||
Thézé, J., Cabodevilla, O., Palma, L., Williams, T., Caballero, P. & Herniou, E.A. (2014) Genomic diversity in European Spodoptera exigua multiple nucleopolyhedrovirus isolates. Journal of General Virology 95, 2297-2309. | |||||
Serrano, A., Pijlman, G.P., Vlak, J.M., Muñoz, D., Williams, T., Caballero, P. (2015) Identification of Spodoptera exigua nucleopolyhedrovirus genes involved in pathogenicity and virulence. Journal of Invertebrate Pathology 126, 43-50. | |||||
Beperet, I., Simón, O., Williams, T., López-Ferber, M. & Caballero, P. (2015) The “11K” gene family members sf68, sf95 and sf138 modulate transmissibility and insecticidal properties of Spodoptera frugiperda multiple nucleopolyhedrovirus. Journal of Invertebrate Pathology 127, 101–109. | |||||
Arrizubieta, M., Simón, O., Williams, T., & Caballero, P. (2015) Genomic sequence of five Helicoverpa armigera nucleopolyhedrovirus genotypes from Spain that differ in their insecticidal properties. Genome Anouncements 3, e00548-15. 127, 101–109. | |||||
Arrizubieta, M., Simón, O., Williams, T. & Caballero, P. (2015) A novel binary mixture of Helicoverpa armigera single nucleopolyhedrovirus genotypic variants has improved insecticidal characteristics for control of cotton bollworms. Applied and Environmental Microbiology 81, 3984-3993. | |||||
Rebolledo, D., Lasa, R., Guevara, R., Murillo, R. & Williams, T. (2015) Baculovirus-induced climbing behavior favors intraspecific necrophagy and efficient disease transmission in Spodoptera exigua. PLoS ONE 10, e0136742. | |||||
Jakubowska, A.K., Murillo, R., Carballo, A., Williams, T., van Lent, J.W., Caballero, P. & Herrero, P. (2016) Iflavirus increases its infectivity and physical stability in association with baculovirus. PeerJ 4, e1687. | |||||
Infante-Rodríguez DA, Berber, J.J., Mercado, G., Valenzuela-González, J., Muñoz, D. & Williams, T. (2016) Earthworm mediated dispersal of baculovirus occlusion bodies: experimental evidence from a model system. Biological Control 100, 18–24. | |||||
Williams, T. (2018) Viruses. In: Hajek, A.E. & Shapiro-Ilan D.I., Ecology of Invertebrate Diseases. Wiley, Chichester, UK. pp. 215-285. doi: 10.1002/9781119256106.ch7 100, 18–24. | |||||
Williams, T., Bergoin, M. & van Oers, M.M. (2017) Diversity of large DNA viruses of invertebrates. Journal of Invertebrate Pathology 147, 4-22. | |||||
Williams, T., Virto, C., Murillo, R. & Caballero, P. (2017) Covert infection of insects by baculoviruses. Frontiers in Microbiology 8, 1337. | |||||
Lasa, R., Guerrero-Analco, JA, Monribot-Villanueva, JL, Mercado, G. & Williams, T. (2018) Why do Spodoptera exigua multiple nucleopolyhedrovirus occlusion bodies lose insecticidal activity on amaranth (Amaranthus hypocondriacus L.)? Biological Control 126, 74-82. | |||||
Ramírez-Arias, F.G., Lasa, R., Murillo, R., Navarro-de-la-Fuente, L., Mercado, G. & Williams, T. (2019) Post-mortem incubation influences occlusion body production in nucleopolyhedrovirus-infected larvae of Spodoptera frugiperda. Biological Control 135, 33–40. | |||||
Aguirre, E., Beperet, I., Williams, T. & Caballero, P. (2019) Genetic variability of Chrysodeixis includens nucleopolyhedrovirus (ChinNPV) and the insecticidal characteristics of selected genotypic variants. Viruses 11, 581. | |||||
Belda, I.M., Beperet, I., Williams, T. & Caballero, P. (2019) Genetic variation and biological stability of two closely related alphabaculoviruses during serial passage in permissive and semi-permissive heterologous hosts. Viruses 11, 660. | |||||
Carballo, A., Williams, T., Murillo, R., Caballero, P. (2020) Iflavirus covert infection increases susceptibility to nucleopolyhedrovirus disease in Spodoptera exigua. Viruses 12, 509. | |||||
Hernández-Melchor, L., Ramírez-Santiago, J.J., Mercado, G. & Williams, T. (2020) Vertical dispersal of nucleopolyhedrovirus occlusion bodies in soil by the earthworm Amynthas gracilus: a field-based estimation. Biocontrol Science & Technology 30, 602-608. | |||||
Aguirre, E., Beperet, I., Williams, T. & Caballero, P. (2021) Generation of variability in Chrysodeixis includens nucleopolyhedrovirus (ChinNPV): the role of a single variant. Viruses 13, 1895. | |||||
Williams T., Melo-Molina, G.d.C., Jiménez-Fernández, J.A., Weissenberger, H., Gómez-Díaz, J.S., Navarro-de-la-Fuente, L., & Richards, A.R. (2023) Presence of Spodoptera frugiperda multiple nucleopolyhedrovirus (SfMNPV) occlusion bodies in maize field soils of Mesoamerica. Insects 14, 80. | |||||
Williams T. (2023) Soil as an environmental reservoir for baculoviruses: Persistence, dispersal and role in pest control. Soil Systems 7, 29. | |||||
Parras-Jurado, A., Muñoz, D., Beperet, I., Williams, T., & Caballero, P. (2023) Insecticidal traits of variants in a genotypically diverse natural isolate of Anticarsia gemmatalis multiple nucleopolyhedrovirus (AgMNPV). Viruses 15, 1526. | |||||
Presa-Parra, E., Navarro-de-la-Fuente, L., Williams, T. & Lasa, R. (2023) Can low concentration flufenoxuron treatment increase the pathogenicity or production of nucleopolyhedrovirus occlusion bodies in Spodoptera exigua (Hübner) or Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)? Acta Zoológica Mexicana 39, e3912627. | |||||
Molina-Ruiz, C.S., Zamora-Briseño, J.A., Simón, O., Lasa, R., & Williams, T. (2024) A qPCR assay for the quantification of selected genotypic variants of Spodoptera frugiperda multiple nucleopolyhedrovirus (Baculoviridae). Viruses 16, 881. | |||||
Real-Santillán, R.O., del-Val, E., Williams, T., Martínez-Castillo, A.M., Gavito, M.E., Contreras-Cornejo, H.A., Díaz, T., García-Gómez, G. & Larsen, J. (2024) Water stress decreases the biocontrol efficacy of a nucleopolyhedrovirus against the fall armyworm on maize. Journal of Pest Science 97, 1315–1324. | |||||
López-Ferber, M., Caballero, P., Williams, T. (2025) Baculovirus genetic diversity and population structure. Viruses 17, 142. htpps://doi.org/10.3390/v17020142 | |||||
Ávila-Hernández, E., Molina-Ruiz, C.S., Díaz-Gómez, J.S., Williams, T. (2025) Fecal transmission of Spodoptera frugiperda multiple nucleopolyhedrovirus (SfMNPV; Baculoviridae). Viruses 17, 298. https://doi.org/10.3390/v17030298 | |||||
| Complete list of publications | Trevor Williams homepage | Sitemap | |||||||
| Iridoviruses | Ecology of baculoviruses | Virus insecticides | Spinosad | Mosquitoes blackflies & ticks | Predators, parasitoids, pathogens | Others | Students | | |