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Dr Amy Ellison

Lecturer in Biological Sciences

0000-0003-3885-6077

Name
Dr Amy Ellison
Position
Lecturer in Biological Sciences
Email
a.ellison@bangor.ac.uk
Phone
+44(0)1248 388437
Location
School of Natural Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
Dr Amy Ellison

View Dr Amy Ellison’s profile on the Bangor Research Portal

Overview

About

I am a molecular parasitologist broadly interested in all aspects of host-pathogen interactions and co-evolution. I have a particular interest in how chronoparasitology – the study of circadian rhythms of hosts and parasites – can be used to improve our understanding of disease dynamics in captive and wild animal populations. In addition, I am interested in how next-generation sequencing (NGS) technologies can be used in the study of biotic and abiotic factors influencing species-specific differences in responses to shared pathogens.

As a BBSRC Future Leader Fellow, I examine interactions of aquaculture practice (e.g. manipulated light regimes, antibiotic use), circadian rhythmicity of gene expression in fish hosts and pathogens, and skin microbial communities, for a holistic approach towards fish health. I combine experimental parasitology and functional genomic methods to uncover how light regimes and circadian rhythms of fish, their parasites and microbiota, impact on fish disease susceptibility.

Anthropogenic induced changes to wild species (e.g. climate change, habitat destruction/fragmentation, introduction of invasive species) and domesticated species (e.g. increased intensity of farming, farming in new geographic regions, global transportation) populations are leading to alterations of host exposure risks to both native and novel pathogens. Consequently, the dynamics of host-pathogen interactions are currently changing at unprecedented rates in both natural and domestic animal populations. Therefore, studying how the rhythmicity of host immunity, parasite biology and environment interact, is crucial to our understanding of altered pathogen transmission dynamics and its consequences on host species fitness. I believe in this flourishing era of high-throughput sequencing and bioinformatics, we are uniquely poised to tackle such questions at a new level of detail.

CV

Education

  • 2012 PhD. Evolutionary genetics of the maintenance of mixed-mating systems. Aberystwyth University, UK.
  • 2009 BSc. (Hons) Zoology (1st). Aberystwyth University, UK.

Career

  • 2019 – Lecturer of Biological Sciences. Bangor University, UK.
  • 2018 – 2021 BBSRC Future Leader Fellow, Cardiff & Bangor University, UK. FUTUREFISH: The role of circadian rhythms, immunity and infection in enhancing aquaculture
  • 2015 – 2018 NRN-LCEE Ser Cymru Fellow, Cardiff University, UK. AquaWales: Minimising the impacts of intensive aquaculture in the face of climate change.
  • 2012 – 2015 NSF Postdoctoral Research Associate, Cornell University, USA. Functional genomics of amphibian chytridiomycosis resistance.

Research Interests

FUTUREFISH: The role of circadian rhythms, immunity and infection in enhancing aquaculture

Circadian rhythms are ubiquitous; from bacteria to plants and animals, all organisms exhibit daily behavioural, physiological, metabolic, and even microbiome cycles. This rhythmicity is regulated by pivotal sets of “clock genes” and in mammals, clock gene expression cycles drive daily variations in immune functions and disease susceptibility. Conversely, immune responses are recognized to alter clock gene expression. Stress responses (in particular altered glucocorticoid levels) can impact clock gene expression and, consequently, innate and adaptive immune responses. In humans, there is increasing recognition of the impact of circadian disruption (e.g. shift-work, jet-lag) on disease susceptibility and the potential to increase drug efficacy using time-of-day targeted treatments/vaccinations (“chronotherapy”). Temporal coordination of biological processes is not limited to free-living organisms; parasites also exhibit circadian rhythms in traits such as egg-laying or larval emergence. However, the extent to which these rhythms are entrained by host cues and/or the abiotic environment is poorly understood. Intriguingly, host-parasite circadian mismatch appears to be detrimental to parasite fitness. Therefore, the integration of chronobiology into current animal health and disease research frameworks is essential for advancing holobiont approaches to health.

In aquaculture, the world’s fastest-growing food sector, infectious disease is the principal barrier to economic and ecological sustainability. Disease outbreaks result in ~US$6 billion loss per year globally and account for annual losses up to 16.5% in the UK. Antibiotic-supplemented feeds are increasingly relied upon to mitigate disease despite concerns for their contribution to emerging antimicrobial resistance in aquatic environments. Intensive indoor aquaculture is heralded as the future of sustainable fish farming, in which the fish’s environment (e.g. light, temperature, feeding) and reproduction is finely tuned to maximise growth and productivity, without impacting natural ecosystems via waste, chemical treatments and escapes. Manipulated photoperiods – particularly extended day length for diurnal species – are currently promoted to improve juvenile rearing quality in many fish species. In the extreme, constant light is used to maximize somatic growth and delay maturation. Despite an increasing awareness of the intricate interaction between circadian gene expression and immune functions in mammals, how this corresponds to current disease issues in captive fish populations is unknown. However, our preliminary data suggests parasitic infections alter fish daily behaviour patterns and dysregulate clock gene expression. Moreover, while time-of-day targeted treatments of disease and cancer in humans appear to have exciting potential, this has yet to be translated to animal health practice and, more fundamentally, the molecular control of circadian rhythmicity in parasites remains unknown. FUTUREFISH will address these key knowledge gaps; investigating how light regimes and circadian rhythms of fish, their parasites and microbiota, interact to impact on disease susceptibility.

Postgraduate Project Opportunities

Chronobiology of host-parasite interactions, fish health and diseases, aquaculture

Publications

2021

  • PublishedDepletion of MHC supertype during domestication can compromise immunocompetence
    Smallbone, W., Ellison, A., Poulton, S., van Oosterhout, C. & Cable, J., Feb 2021, In : Molecular Ecology. 30, 3, p. 736-746
    Research output: Contribution to journal › Article

2020

  • PublishedComparative transcriptomics reveal conserved impacts of rearing density on immune response of two important aquaculture species
    Ellison, A., Uren Webster, T. M., Rodriguez-Barreto, D., Garcia de Leaniz, C., Consuegra, S., Orozco-terWengel, P. & Cable, J., Sep 2020, In : Fish and Shellfish Immunology. 104, p. 192-201
    Research output: Contribution to journal › Article
  • PublishedCost of a deprived environment – increased intraspecific aggression and susceptibility to pathogen infections
    Masud, N., Ellison, A., Pope, E. & Cable, J., 22 Oct 2020, In : Journal of Experimental Biology. 223, 20
    Research output: Contribution to journal › Article
  • PublishedCrayfish plague affects juvenile survival and adult behaviour of invasive signal crayfish
    Thomas, J. R., Robinson, C., Mrugała, A., Ellison, A., Matthews, E., Griffiths, S., Consuegra, S. & Cable, J., May 2020, In : Parasitology. 147, 6, p. 706-714
    Research output: Contribution to journal › Article
  • PublishedGene expression varies within and between enzootic and epizootic lineages of Batrachochytrium dendrobatidis (Bd) in the Americas
    McDonald, C. A., Ellison, A., Toledo, L. F., James, T. Y. & Zamudio, K. R., Jan 2020, In : Fungal Biology. 124, 1, p. 34-43
    Research output: Contribution to journal › Article
  • PublishedInsights into aphid prey consumption by ladybirds: Optimising field sampling methods and primer design for High Throughput Sequencing
    Ammann, L., Moorhouse-Gann, R., Bertrand, C., Mestre, L., Cuff, J., Perez Hidalgo, N., Ellison, A., Herzog, F., Entling, M., Albrecht, M. & Symondson, W. O. C., 1 Jul 2020, In : PLoS ONE. 15, 7, e0235054.
    Research output: Contribution to journal › Article
  • PublishedRNA-Seq analysis of the guppy immune response against Gyrodactylus bullatarudis infection
    Konczal, M., Ellison, A., Phillips, K., Radwan, J., Mohammed, R., Cable, J. & Chadzinska, M., Dec 2020, In : Parasite Immunology. 42, 12, e12782.
    Research output: Contribution to journal › Article
  • E-pub ahead of printSaprolegnia parasitica zoospore activity and host survival indicates isolate variation in host preference
    Matthews, E., Ellison, A. & Cable, J., 19 Nov 2020, In : Fungal Biology.
    Research output: Contribution to journal › Article
  • PublishedTemperature-mediated shifts in salamander transcriptomic responses to the amphibian-killing fungus
    Ellison, A., Zamudio, K. R., Lips, K. R. & Muletz-Wolz, C., 31 Jan 2020, In : Molecular Ecology. 29, 2, p. 325-343
    Research output: Contribution to journal › Article

2019

  • PublishedA neglected fish stressor: mechanical disturbance during transportation impacts susceptibility to disease in a globally important ornamental fish
    Masud, N., Ellison, A. & Cable, J., Apr 2019, In : Diseases of Aquatic Organisms. 134, p. 25-32
    Research output: Contribution to journal › Article
  • PublishedLong-term cleaning patterns of the sharknose goby (Elacatinus evelynae)
    Dunkley, K., Ellison, A., Mohammed, R. S., van Oosterhout, C., Whittey, K. E., Perkins, S. E. & Cable, J., 1 Apr 2019, In : Coral Reefs. 38, 2, p. 321-330
    Research output: Contribution to journal › Article

2018

  • PublishedTranscriptomic response to parasite infection in Nile tilapia (Oreochromis niloticus) depends on rearing density
    Ellison, A. R., Uren Webster, T. M., Rey, O., Garcia de Leaniz, C., Consuegra, S., Orozco-terWengel, P. & Cable, J., 1 Oct 2018, In : BMC Genomics. 19, 723.
    Research output: Contribution to journal › Article

2017

  • PublishedChytrid fungus infection in zebrafish demonstrates that the pathogen can parasitize non-amphibian vertebrate hosts
    Liew, N., Moya, M. J. M., Wierzbicki, C. J., Hollinshead, M., Dillon, M. J., Thornton, C. R., Ellison, A., Cable, J., Fisher, M. C. & Mostowy, S., 20 Apr 2017, In : Nature Communications. 8, 15048.
    Research output: Contribution to journal › Article
  • PublishedFirst in vivo Batrachochytrium dendrobatidis transcriptomes reveal mechanisms of host exploitation, host-specific gene expression, and expressed genotype shifts
    Ellison, A. R., DiRenzo, G. V., McDonald, C. A., Lips, K. R. & Zamudio, K. R., 1 Jan 2017, In : G3: Genes, Genomes, Genetics. 7, 1, p. 269-278
    Research output: Contribution to journal › Article
  • PublishedGlobal change, parasite transmission and disease control: lessons from ecology
    Cable, J., Barber, I., Boag, B., Ellison, A. R., Morgan, E. R., Murray, K., Pascoe, E. L., Sait, S. M., Wilson, A. J. & Booth, M., 13 Mar 2017, In : Philosophical Transactions of The Royal Society B: Biological Sciences. 372, 1719, 20160088.
    Research output: Contribution to journal › Article
  • PublishedHost allometry influences the evolution of parasite host-generalism: theory and meta-analysis
    Walker, J. G., Hurford, A., Cable, J., Ellison, A. R., Price, S. J. & Cressler, C. E., 5 May 2017, In : Philosophical Transactions of The Royal Society B: Biological Sciences. 372, 1719
    Research output: Contribution to journal › Article

2015

  • PublishedEpigenetic regulation of sex ratios may explain natural variation in self-fertilization rates
    Ellison, A., Rodriguez Lopez, C. M., Moran, P., Breen, J., Swain, M., Megias, M., Hegarty, M., Wilkinson, M., Pawluk, R. & Consuegra, S., 22 Nov 2015, In : Proceedings of the Royal Society B: Biological Sciences. 282, 1819, 20151900.
    Research output: Contribution to journal › Article
  • PublishedMore than Skin Deep: Functional Genomic Basis for Resistance to Amphibian Chytridiomycosis
    Ellison, A. R., Tunstall, T., DiRenzo, G. V., Hughey, M. C., Rebollar, E. A., Belden, L. K., Harris, R. N., Ibanez, R., Lips, K. R. & Zamudio, K. R., Jan 2015, In : Genome Biology and Evolution. 7, 1, p. 286-298
    Research output: Contribution to journal › Article

2014

  • PublishedConservation and divergence in the frog immunome: pyrosequencing and de novo assembly of immune tissue transcriptomes
    Savage, A. E., Kiemnec-Tyburczy, K. M., Ellison, A. R., Fleischer, R. C. & Zamudio, K. R., 1 Jun 2014, In : Gene. 542, 2, p. 98-108
    Research output: Contribution to journal › Article
  • PublishedFighting a Losing Battle: Vigorous Immune Response Countered by Pathogen Suppression of Host Defenses in the Chytridiomycosis-Susceptible Frog Atelopus zeteki
    Ellison, A. R., Savage, A. E., DiRenzo, G. V., Langhammer, P., Lips, K. R. & Zamudio, K. R., 1 Jul 2014, In : G3: Genes, Genomes, Genetics. 4, 7, p. 1275-1289
    Research output: Contribution to journal › Article

2013

  • PublishedBalancing selection and the maintenance of MHC supertype variation in a selfing vertebrate
    Consuegra, S., Ellison, A., Allainguillaume, J., Pachebat, J., Peat, K. M. & Wright, P., 7 Mar 2013, In : Proceedings of the Royal Society B: Biological Sciences. 280, 1754
    Research output: Contribution to journal › Editorial
  • PublishedChoosy males could help explain androdioecy in a selfing fish
    Ellison, A., Jones, J., Inchley, C. & Consuegra, S., 1 Jun 2013, In : American Naturalist. 181, 6
    Research output: Contribution to journal › Article
  • PublishedInbred and furious: negative association between aggression and genetic diversity in highly inbred fish
    Ellison, A., Garcia de Leaniz, C. & Consuegra, S., Apr 2013, In : Molecular Ecology. 22, 8, p. 2292-2300
    Research output: Contribution to journal › Article

2012

  • PublishedEnvironmental diel variation, parasite loads, and local population structuring of a mixed‐mating mangrove fish
    Ellison, A., Wright, P., Taylor, D. S., Cooper, C., Regan, K., Currie, S. & Consuegra, S., 19 Jun 2012, In : Ecology and Evolution. 2, 7
    Research output: Contribution to journal › Article
  • PublishedMaintaining functional major histocompatibility complex diversity under inbreeding: the case of a selfing vertebrate
    Ellison, A., Allainguillaume, J., Girdwood, S., Pachebat, J., Peat, K. M., Wright, P. & Consuegra, S., 17 Oct 2012, In : Proceedings of the Royal Society B: Biological Sciences. 279, 1749, p. 5004-5013
    Research output: Contribution to journal › Article

2011

  • PublishedBest of both worlds? Association between outcrossing and parasite loads in a selfing fish
    Ellison, A., Cable, J. & Consuegra, S., Oct 2011, In : Evolution. 65, 10, p. 3021-3026
    Research output: Contribution to journal › Article

Projects

  • CHRONOFEED: Harnessing chronobiology for precision aquaculture nutrition & health.

    01/12/2020 – 01/04/2021 (Active)

  • FUTUREFISH: The role of circadian rhythms, immunity and infection in enhancing aquaculture

    01/04/2019 – 31/07/2021 (Active)

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