Kerry-Lyn McDonald-Howard

School of Biological and Environmental Sciences

I’m a PhD student in biological and environmental sciences and my main focus is investigations into the parasitic nematode of slugs, Phasmarhabditis hermaphrodita. I am match funded by the Royal Horticultural Society and Liverpool Johns Moores University to carry out research into how abiotic factors may be influencing the efficacy of the P. hermaphrodita as a biological control and how to further improve this efficacy.
The abiotic work involves investigating how soil types and temperatures may impact survival, host finding behaviour and pathogenicity.
Further improving the efficacy will be performed by trialling the ideal abiotic factors in the field and investigating a synergistic approach by adding biorational controls, essential oils, to enhance the effectiveness.


2018, Bangor University, United Kingdom, BSc Zoology

Journal article

Barua A, McDonald-Howard K, McDonnell R, Rae R, Williams C. 2020. Toxicity of essential oils to slug parasitic and entomopathogenic nematodes Journal of Pest Science, DOI Author Url Public Url

Conference presentation:

The effect of soil type and temperature on the slug parasitic nematode Phasmarhabditis hermaphrodita, Advances in Nematology 2019, Edinburgh, Poster presentation. 2019

The effect of soil type and temperature on the survival of the slug parasitic nematode Phasmarhabditis hermaphrodita, RHS PhD Symposium, RHS Wisley, Oral presentation. 2019