The Harlequin Ladybird Survey
Harlequin ladybird elytra
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Jason Baverstock


Research Scientist


Rothamsted Research

Ladybird research keywords

Coccinella septempunctata, Harmonia axyridis, intraguild interactions, biological control, predators, parasitoids, pathogens.

Description of work

My research involves assessing the intraguild interactions that occur between aphid natural enemies and the utilisation of this guild for biological control.  More specifically:

  1. The effect of spatial scale, abiotic conditions and floral diversity on the intraguild interactions that occur between aphid predators, parasitoids and pathogens
  2. The movement of aphid natural enemies from field margins into crops at the mesocosm and field scale
  3. The effect of species richness on aphid suppression under controlled conditions
  4. The utilisation of non-food crops as a resource for aphid natural enemies
Key publications

Pell, J. K., Baverstock, J., Roy, H. E., Ware, R. L. & Majerus, M. E. N.(2008). Intraguild predation involving Harmonia axyridis: a review of current knowledge and future perspectives. BioControl 53: 147-168.

Roy, H. E., Baverstock, J., Ware, R. L., Clark, S. J., Majerus, M. E. N., Baverstock, K. E. & Pell, J. K.(2008). Intraguild predation of the aphid pathogenic fungus Pandora neoaphidis by the invasive coccinellid Harmonia axyridis. Ecological Entomology 33: 175-182.

Baverstock, J., Baverstock, K. E., Clark, S. J. & Pell, J. K. (2008). Transmission of Pandora neoaphidis in the presence of co-occurring arthropods. Journal of Invertebrate Pathology 98: 356-359.

Baverstock, J., Alderson, P. G. & Pell, J. K. (2007). Intraguild interactions involving the entomopathogenic fungus Pandora neoaphidis. IOBC/wprs Bulletin 30(1): 95-98.

Baverstock, J., Alderson, P. G. & Pell, J. K. (2005). Influence of the aphid pathogen Pandora neoaphidis on the foraging behaviour of the aphid parasitoid Aphidius ervi. Ecological Entomology 30: 665-672.

Harlequin eating a lacewing larva

Jason's favourite ladybird is the Harlequin
(photo: Scott Thompson)