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Dr Jim Galloway

Research Technician

 Stella Turk Building F3.06


University of Exeter, Penryn Campus, Penryn, TR10 9FE

 Office hours:

9 - 5 Monday to Friday


Currently I am a research technician working with Dr Emmanuelle Briolat and Dr Jolyon Troscianko on an NERC grant looking at the impact of artificial light pollution on nocturnal moth behaviour, including pollination, flight, and camouflage responses.

Prior to my current position I completed a PhD in the department focussed on the effectiveness of animal camouflage, and most recently the roles of vision in directing colour change for improved camouflage. I work in the Sensory Ecology and Evolution Lab, under the supervision of Professor Martin Stevens co-supervised by Professor Tom Tregenza here in Penryn, and Professor Nick Roberts at the Ecology of Vision Lab at the University of Bristol.



2017-2022 PhD Biological Sciences, Thesis title: "Animal Vision and Colour Change for Camouflage" - Univeristy of Exeter (Penryn Campus)

2016-2017 MSc Evolutionary and Behavioural Ecology - University of Exeter (Penryn Campus)

2012-2015 BSc Biology (Hons) - Royal Holloway, University of London


Research interests

My research is focussed around the testing of the specific roles of animal vision in colour change for camouflage.

It is assumed that visual information guides the colour change for camouflage of many species. However, this hasn't been robustly tested. In order to understand vision's role in colour change for camouflage, I'm examining the various ways colour change for camouflage is contingent on visual information. Using shore crabs, I'm testing their visual capabilities, then relating these to the conditions where they change colour.

This is done through a combination of behavioural tests of vision, and digital image analysis that allows us to interpret colour change and the resulting camouflage based on what relevant predators might actually see, providing a measure of camouflage success.

By understanding what causes crabs to change colour, and what can stop them changing under conditions that should casue them to change can allow us to understand the role of vision, as well as other sensory modalities, in colour change for camouflage. Ultimately, we hope to understand the evolutionary relationship between phenotypic plasticities and the sensory systems that guide them.

Research projects


  • Galloway, J. A. M., Green, S. D., Stevens, M. & Kelley, L. A. (2020) Finding a hidden signal among noise: how can predators overcome camouflage strategies? Philosophical Transactions of the Royal Society B.


Supervision / Group

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