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Dr Xavier Harrison

Dr Xavier Harrison

Lecturer in Biosciences

 5176

 Stella Turk Building LG.3.12

 

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

Overview

The natural world is alive with microbes, including bacteria, fungi and viruses. These microbes can live in close association with animal and plant hosts, and have huge impacts on their biology, influencing traits such as disease susceptibility, digestive efficiency and lifespan.

But why is the microbiome apparently so important for organismal fitness? And what are the mechanisms by which the microbiome can cause differences among individuals in life history trajectory? These are the questions that drive me.

I’m a molecular ecologist with a broad background in genetics and evolutionary ecology. I use a range of systems to tackle questions about host-microbe interactions, including amphibians, birds and insects.

 

 

Qualifications

2011   PhD Biological Sciences, University of Exeter

2006   BSc. (Hons) Biology, Class I, University of York

Career

2019 – Present         Lecturer, University of Exeter

2013-2018                 Research Fellow, Institute of Zoology, ZSL

2011-2013                 BBSRC Postdoctoral Researcher, University of Exeter

2007-2011                 PhD, University of Exeter

2006-2007                 Research Technician, UKPopNet, University of York

 

Research group links

Research

Publications

Key publications | Publications by category | Publications by year

Publications by category


Journal articles

Harrison XA, Donaldson L, Correa-Cano ME, Evans J, Fisher DN, Goodwin C, Robinson B, Hodgson DJ, Inger R (In Press). A brief introduction to mixed effects modelling and multi-model inference in ecology.  Abstract.
Harrison XA, Donaldson L, Correa-Cano ME, Evans J, Fisher DN, Goodwin C, Robinson B, Hodgson DJ, Inger R (In Press). A brief introduction to mixed effects modelling and multi-model inference in ecology.  Abstract.
Campbell LJ, Garner TWJ, Tessa G, Scheele BC, Griffiths AGF, Wilfert L, Harrison XA (In Press). An emerging viral pathogen truncates population age structure in a European amphibian and may reduce population viability.  Abstract.
Campbell LJ, Garner TWJ, Tessa G, Scheele BC, Griffiths AGF, Wilfert L, Harrison XA (In Press). An emerging viral pathogen truncates population age structure in a European amphibian and may reduce population viability.  Abstract.
Harrison XA, Donaldson L, Correa-Cano ME, Evans J, Fisher DN, Goodwin C, Robinson B, Hodgson DJ, Inger R (In Press). Best practice in mixed effects modelling and multi-model inference in ecology.  Abstract.
Campbell LJ, Garner TWJ, Tessa G, Scheele BC, Griffiths AGF, Wilfert L, Harrison XA (In Press). Disease mediated changes to life history and demography threaten the survival of European amphibian populations.  Abstract.
Harrison, XA, York, JE, Cram, DL, Young AJ (In Press). Extra-group mating increases inbreeding risk in a cooperatively breeding bird. Molecular Ecology
Harrison XA, Bearhop S, Inger R, Colhoun K, Gudmundsson GA, Hodgson DA, McElwaine G, Tregenza T (In Press). Heretozygosity-Fitness Correlation in a Migratory Bird: an Analysis of Inbreeding and Single-Locus Effects. Molecular Ecology (in press)
Harrison XA, Bearhop S, Inger R, Colhoun K, Gudmundsson GA, Hodgson DJ, McElwaine G, Tregenza T (In Press). Heterozygosity-Fitness Correlations in a Migratory Bird: an analysis of inbreeding and single locus effects. Molecular Ecology
Harrison XA, Price SJ, Hopkins K, Leung WTM, Sergeant C, Garner TWJ (In Press). Host Microbiome Richness Predicts Resistance to Disturbance by Pathogenic Infection in a Vertebrate Host.  Abstract.
Campbell L, Garner T, Hopkins K, Griffiths A, Harrison XA (2019). Outbreaks of an Emerging Viral Disease Covary with Differences in the Composition of the Skin Microbiome of a Wild United Kingdom Amphibian. Frontiers in Microbiology
Harrison XA, Donaldson L, Correa-Cano ME, Evans J, Fisher DN, Goodwin CED, Robinson BS, Hodgson DJ, Inger R (2018). A brief introduction to mixed effects modelling and multi-model inference in ecology. PeerJ, 6 Abstract.  Author URL.
Bates KA, Clare FC, O’Hanlon S, Bosch J, Brookes L, Hopkins K, McLaughlin EJ, Daniel O, Garner TWJ, Fisher MC, et al (2018). Amphibian chytridiomycosis outbreak dynamics are linked with host skin bacterial community structure. Nature Communications, 9(1).
Campbell LJ, Garner TWJ, Tessa G, Scheele BC, Griffiths AGF, Wilfert L, Harrison XA (2018). An emerging viral pathogen truncates population age structure in a European amphibian and may reduce population viability. PEERJ, 6 Author URL.
Chen S, Cunningham AA, Wei G, Yang J, Liang Z, Wang J, Wu M, Yan F, Xiao H, Harrison XA, et al (2018). Determining threatened species distributions in the face of limited data: Spatial conservation prioritization for the Chinese giant salamander (Andrias davidianus). Ecology and Evolution, 8(6), 3098-3108. Abstract.
Griffiths SM, Harrison XA, Weldon C, Wood MD, Pretorius A, Hopkins K, Fox G, Preziosi RF, Antwis RE (2018). Genetic variability and ontogeny predict microbiome structure in a disease-challenged montane amphibian. ISME Journal, 12(10), 2506-2517. Abstract.
Antwis RE, Harrison XA (2018). Probiotic consortia are not uniformly effective against different amphibian chytrid pathogen isolates. Mol Ecol, 27(2), 577-589. Abstract.  Author URL.
Antwis RE, Griffiths SM, Harrison XA, Aranega-Bou P, Arce A, Bettridge AS, Brailsford FL, de Menezes A, Devaynes A, Forbes KM, et al (2017). Fifty important research questions in microbial ecology. FEMS Microbiol Ecol, 93(5). Abstract.  Author URL.
Rebollar EA, Antwis RE, Becker MH, Belden LK, Bletz MC, Brucker RM, Harrison XA, Hughey MC, Kueneman JG, Loudon AH, et al (2016). Using "Omics" and Integrated Multi-Omics Approaches to Guide Probiotic Selection to Mitigate Chytridiomycosis and Other Emerging Infectious Diseases. FRONTIERS IN MICROBIOLOGY, 7 Author URL.
Rebollar EA, Antwis RE, Becker MH, Belden LK, Bletz MC, Brucker RM, Harrison XA, Hughey MC, Kueneman JG, Loudon AH, et al (2016). Using "Omics" and Integrated Multi-Omics Approaches to Guide Probiotic Selection to Mitigate Chytridiomycosis and Other Emerging Infectious Diseases. Front Microbiol, 7 Abstract.  Author URL.
Douglas CMS, Mulligan M, Harrison XA, Henschel JR, Pettorelli N, Cowlishaw G (2016). Widespread dieback of riparian trees on a dammed ephemeral river and evidence of local mitigation by tributary flows. PeerJ, 4 Abstract.  Author URL.
Harrison XA (2015). A comparison of observation-level random effect and Beta-Binomial models for modelling overdispersion in Binomial data in ecology & evolution. PeerJ, 3 Abstract.  Author URL.
Antwis RE, Preziosi RF, Harrison XA, Garner TWJ (2015). Amphibian Symbiotic Bacteria Do Not Show a Universal Ability to Inhibit Growth of the Global Panzootic Lineage of Batrachochytrium dendrobatidis. Appl Environ Microbiol, 81(11), 3706-3711. Abstract.  Author URL.
Harrison XA, York JE, Young AJ (2014). Population genetic structure and direct observations reveal sex-reversed patterns of dispersal in a cooperative bird. Molecular Ecology, 23(23), 5740-5755. Abstract.
Harrison XA, York JE, Young AJ (2014). Population genetic structure and direct 
observations reveal sex-reversed patterns of dispersal in a cooperative bird. Molecular Ecology Full text.
Harrison XA (2014). Using observation-level random effects to model overdispersion in count data in ecology and evolution. PeerJ, 2 Abstract.  Author URL.
Harrison XA, York JE, Cram DL, Hares MC, Young AJ (2013). Complete reproductive skew within white-browed sparrow weaver groups despite outbreeding opportunities for subordinates of both sexes. Behavioral Ecology and Sociobiology, 67(12), 1915-1929. Abstract.
Harrison XA, Hodgson DJ, Inger R, Colhoun K, Gudmundsson GA, McElwaine G, Tregenza T, Bearhop S (2013). Environmental conditions during breeding modify the strength of mass-dependent carry-over effects in a migratory bird. PLoS One, 8(10). Abstract.  Author URL.  Full text.
Harrison XA, York JE, Cram DL, Young AJ (2013). Extra-group mating increases inbreeding risk in a cooperatively breeding bird. Molecular Ecology, 22(22), 5700-5715. Abstract.
Tyler F, Harrison XA, Bretman A, Veen T, Rodríguez-Muñoz R, Tregenza T (2013). Multiple post-mating barriers to hybridization in field crickets. Molecular Ecology, 22(6), 1640-1649. Abstract.
Tyler F, Harrison XA, Bretman A, Veen T, Rodríguez-Muñoz R, Tregenza T (2013). Multiple post-mating barriers to hybridization in field crickets. Mol Ecol, 22(6), 1640-1649. Abstract.  Author URL.
Drewe JA, Weber N, Carter SP, Bearhop S, Harrison XA, Dall SRX, McDonald RA, Delahay RJ (2012). Performance of proximity loggers in recording intra- and inter-species interactions: a laboratory and field-based validation study. PLoS One, 7(6). Abstract.  Full text.
Harrison XA, Bearhop S, Inger R, Colhoun K, Gudmundsson GA, Hodgson D, McElwaine G, Tregenza T (2011). Heterozygosity-fitness correlations in a migratory bird: an analysis of inbreeding and single-locus effects. Molecular ecology, 20(22), 4786-4795. Abstract.
Inger R, Harrison XA, Ruxton GD, Newton J, Colhoun K, Gudmundsson GA, McElwaine G, Pickford M, Hodgson D, Bearhop S, et al (2010). Carry-Over Effects Reveal Reproductive Costs in a Long Distance Migrant. Journal of Animal Ecology, 79, 974-982.
Harrison XA, Blount J, Inger R, Bearhop S (2010). Carry-over Effects as Drivers of Fitness in Animals. Journal of Animal Ecology, 79, 974-982.
Harrison XA, Tregenza T, Inger R, Colhoun K, Dawson DA, Gudmundsson GA, Hodgson DJ, Horsburgh GJ, McElwaine G, Bearhop S, et al (2010). Cultural Inheritance Drives Site Fidelity and Migratory Connectivity in a Long Distance Migrant. Molecular Ecology, 19(24), 5484-5496.
Harrison XA, Dawson DA, Horsburgh GJ, Tregenza T, Bearhop S (2010). Isolation, characterisation and predicted genome locations of Light-bellied Brent goose (Branta bernicla hrota) microsatellite loci (Anatidae, AVES). Conservation Genetics Resources, 2, 365-371.
Harrison XA, Dawson DA, Horsburgh GJ, Tregenza T, Bearhop S (2010). Isolation, characterisation and predicted genome locations of Light-bellied Brent goose (Branta bernicla hrota) microsatellite loci (Anatidae, AVES). Conservation Genetics Resources, 1-7.

Publications by year


In Press

Harrison XA, Donaldson L, Correa-Cano ME, Evans J, Fisher DN, Goodwin C, Robinson B, Hodgson DJ, Inger R (In Press). A brief introduction to mixed effects modelling and multi-model inference in ecology.  Abstract.
Harrison XA, Donaldson L, Correa-Cano ME, Evans J, Fisher DN, Goodwin C, Robinson B, Hodgson DJ, Inger R (In Press). A brief introduction to mixed effects modelling and multi-model inference in ecology.  Abstract.
Campbell LJ, Garner TWJ, Tessa G, Scheele BC, Griffiths AGF, Wilfert L, Harrison XA (In Press). An emerging viral pathogen truncates population age structure in a European amphibian and may reduce population viability.  Abstract.
Campbell LJ, Garner TWJ, Tessa G, Scheele BC, Griffiths AGF, Wilfert L, Harrison XA (In Press). An emerging viral pathogen truncates population age structure in a European amphibian and may reduce population viability.  Abstract.
Harrison XA, Donaldson L, Correa-Cano ME, Evans J, Fisher DN, Goodwin C, Robinson B, Hodgson DJ, Inger R (In Press). Best practice in mixed effects modelling and multi-model inference in ecology.  Abstract.
Campbell LJ, Garner TWJ, Tessa G, Scheele BC, Griffiths AGF, Wilfert L, Harrison XA (In Press). Disease mediated changes to life history and demography threaten the survival of European amphibian populations.  Abstract.
Harrison, XA, York, JE, Cram, DL, Young AJ (In Press). Extra-group mating increases inbreeding risk in a cooperatively breeding bird. Molecular Ecology
Harrison XA, Bearhop S, Inger R, Colhoun K, Gudmundsson GA, Hodgson DA, McElwaine G, Tregenza T (In Press). Heretozygosity-Fitness Correlation in a Migratory Bird: an Analysis of Inbreeding and Single-Locus Effects. Molecular Ecology (in press)
Harrison XA, Bearhop S, Inger R, Colhoun K, Gudmundsson GA, Hodgson DJ, McElwaine G, Tregenza T (In Press). Heterozygosity-Fitness Correlations in a Migratory Bird: an analysis of inbreeding and single locus effects. Molecular Ecology
Harrison XA, Price SJ, Hopkins K, Leung WTM, Sergeant C, Garner TWJ (In Press). Host Microbiome Richness Predicts Resistance to Disturbance by Pathogenic Infection in a Vertebrate Host.  Abstract.

2019

Campbell L, Garner T, Hopkins K, Griffiths A, Harrison XA (2019). Outbreaks of an Emerging Viral Disease Covary with Differences in the Composition of the Skin Microbiome of a Wild United Kingdom Amphibian. Frontiers in Microbiology

2018

Harrison XA, Donaldson L, Correa-Cano ME, Evans J, Fisher DN, Goodwin CED, Robinson BS, Hodgson DJ, Inger R (2018). A brief introduction to mixed effects modelling and multi-model inference in ecology. PeerJ, 6 Abstract.  Author URL.
Bates KA, Clare FC, O’Hanlon S, Bosch J, Brookes L, Hopkins K, McLaughlin EJ, Daniel O, Garner TWJ, Fisher MC, et al (2018). Amphibian chytridiomycosis outbreak dynamics are linked with host skin bacterial community structure. Nature Communications, 9(1).
Campbell LJ, Garner TWJ, Tessa G, Scheele BC, Griffiths AGF, Wilfert L, Harrison XA (2018). An emerging viral pathogen truncates population age structure in a European amphibian and may reduce population viability. PEERJ, 6 Author URL.
Chen S, Cunningham AA, Wei G, Yang J, Liang Z, Wang J, Wu M, Yan F, Xiao H, Harrison XA, et al (2018). Determining threatened species distributions in the face of limited data: Spatial conservation prioritization for the Chinese giant salamander (Andrias davidianus). Ecology and Evolution, 8(6), 3098-3108. Abstract.
Griffiths SM, Harrison XA, Weldon C, Wood MD, Pretorius A, Hopkins K, Fox G, Preziosi RF, Antwis RE (2018). Genetic variability and ontogeny predict microbiome structure in a disease-challenged montane amphibian. ISME Journal, 12(10), 2506-2517. Abstract.
Antwis RE, Harrison XA (2018). Probiotic consortia are not uniformly effective against different amphibian chytrid pathogen isolates. Mol Ecol, 27(2), 577-589. Abstract.  Author URL.

2017

Antwis RE, Griffiths SM, Harrison XA, Aranega-Bou P, Arce A, Bettridge AS, Brailsford FL, de Menezes A, Devaynes A, Forbes KM, et al (2017). Fifty important research questions in microbial ecology. FEMS Microbiol Ecol, 93(5). Abstract.  Author URL.

2016

Rebollar EA, Antwis RE, Becker MH, Belden LK, Bletz MC, Brucker RM, Harrison XA, Hughey MC, Kueneman JG, Loudon AH, et al (2016). Using "Omics" and Integrated Multi-Omics Approaches to Guide Probiotic Selection to Mitigate Chytridiomycosis and Other Emerging Infectious Diseases. FRONTIERS IN MICROBIOLOGY, 7 Author URL.
Rebollar EA, Antwis RE, Becker MH, Belden LK, Bletz MC, Brucker RM, Harrison XA, Hughey MC, Kueneman JG, Loudon AH, et al (2016). Using "Omics" and Integrated Multi-Omics Approaches to Guide Probiotic Selection to Mitigate Chytridiomycosis and Other Emerging Infectious Diseases. Front Microbiol, 7 Abstract.  Author URL.
Douglas CMS, Mulligan M, Harrison XA, Henschel JR, Pettorelli N, Cowlishaw G (2016). Widespread dieback of riparian trees on a dammed ephemeral river and evidence of local mitigation by tributary flows. PeerJ, 4 Abstract.  Author URL.

2015

Harrison XA (2015). A comparison of observation-level random effect and Beta-Binomial models for modelling overdispersion in Binomial data in ecology & evolution. PeerJ, 3 Abstract.  Author URL.
Antwis RE, Preziosi RF, Harrison XA, Garner TWJ (2015). Amphibian Symbiotic Bacteria Do Not Show a Universal Ability to Inhibit Growth of the Global Panzootic Lineage of Batrachochytrium dendrobatidis. Appl Environ Microbiol, 81(11), 3706-3711. Abstract.  Author URL.

2014

Harrison XA, York JE, Young AJ (2014). Population genetic structure and direct observations reveal sex-reversed patterns of dispersal in a cooperative bird. Molecular Ecology, 23(23), 5740-5755. Abstract.
Harrison XA, York JE, Young AJ (2014). Population genetic structure and direct 
observations reveal sex-reversed patterns of dispersal in a cooperative bird. Molecular Ecology Full text.
Harrison XA (2014). Using observation-level random effects to model overdispersion in count data in ecology and evolution. PeerJ, 2 Abstract.  Author URL.

2013

Harrison XA, York JE, Cram DL, Hares MC, Young AJ (2013). Complete reproductive skew within white-browed sparrow weaver groups despite outbreeding opportunities for subordinates of both sexes. Behavioral Ecology and Sociobiology, 67(12), 1915-1929. Abstract.
Harrison XA, Hodgson DJ, Inger R, Colhoun K, Gudmundsson GA, McElwaine G, Tregenza T, Bearhop S (2013). Environmental conditions during breeding modify the strength of mass-dependent carry-over effects in a migratory bird. PLoS One, 8(10). Abstract.  Author URL.  Full text.
Harrison XA, York JE, Cram DL, Young AJ (2013). Extra-group mating increases inbreeding risk in a cooperatively breeding bird. Molecular Ecology, 22(22), 5700-5715. Abstract.
Tyler F, Harrison XA, Bretman A, Veen T, Rodríguez-Muñoz R, Tregenza T (2013). Multiple post-mating barriers to hybridization in field crickets. Molecular Ecology, 22(6), 1640-1649. Abstract.
Tyler F, Harrison XA, Bretman A, Veen T, Rodríguez-Muñoz R, Tregenza T (2013). Multiple post-mating barriers to hybridization in field crickets. Mol Ecol, 22(6), 1640-1649. Abstract.  Author URL.

2012

Drewe JA, Weber N, Carter SP, Bearhop S, Harrison XA, Dall SRX, McDonald RA, Delahay RJ (2012). Performance of proximity loggers in recording intra- and inter-species interactions: a laboratory and field-based validation study. PLoS One, 7(6). Abstract.  Full text.

2011

Harrison XA, Bearhop S, Inger R, Colhoun K, Gudmundsson GA, Hodgson D, McElwaine G, Tregenza T (2011). Heterozygosity-fitness correlations in a migratory bird: an analysis of inbreeding and single-locus effects. Molecular ecology, 20(22), 4786-4795. Abstract.

2010

Inger R, Harrison XA, Ruxton GD, Newton J, Colhoun K, Gudmundsson GA, McElwaine G, Pickford M, Hodgson D, Bearhop S, et al (2010). Carry-Over Effects Reveal Reproductive Costs in a Long Distance Migrant. Journal of Animal Ecology, 79, 974-982.
Harrison XA, Blount J, Inger R, Bearhop S (2010). Carry-over Effects as Drivers of Fitness in Animals. Journal of Animal Ecology, 79, 974-982.
Harrison XA, Tregenza T, Inger R, Colhoun K, Dawson DA, Gudmundsson GA, Hodgson DJ, Horsburgh GJ, McElwaine G, Bearhop S, et al (2010). Cultural Inheritance Drives Site Fidelity and Migratory Connectivity in a Long Distance Migrant. Molecular Ecology, 19(24), 5484-5496.
Harrison XA, Dawson DA, Horsburgh GJ, Tregenza T, Bearhop S (2010). Isolation, characterisation and predicted genome locations of Light-bellied Brent goose (Branta bernicla hrota) microsatellite loci (Anatidae, AVES). Conservation Genetics Resources, 2, 365-371.
Harrison XA, Dawson DA, Horsburgh GJ, Tregenza T, Bearhop S (2010). Isolation, characterisation and predicted genome locations of Light-bellied Brent goose (Branta bernicla hrota) microsatellite loci (Anatidae, AVES). Conservation Genetics Resources, 1-7.

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