Dr Daniel Merrifield
Profiles

Dr Daniel Merrifield

Associate Professor of Fish Health and Nutrition

School of Biological and Marine Sciences (Faculty of Science and Engineering)

Dr Daniel Merrifield can be contacted through arrangement with our Press Office, to speak to the media on these areas of expertise.
  • Nutrition
  • Sustainable aquaculture
  • Aquaculture
  • Fish health
  • Food production
  • Probiotics
  • Prebiotics
  • Protein sources
Biography

Biography

Qualifications

  • PhD - Evaluation of selected probiotics and bovine lactoferrin as feed supplements for rainbow trout (Oncorhynchus mykiss Walbaum) for applications in aquaculture. University of Plymouth
  • Postgraduate Certificate in Academic Practice (PGCAP), University of Plymouth 
  • PgCert (distinction) -Research Methods, University of Plymouth
  • General Teachers Associates training course, University of Plymouth
  • BSc (Hons) - Biological Sciences, University of Plymouth

Professional membership

Roles on external bodies

Associate Editor for the Journal of the World Aquaculture Society
Associate Editor for Aquaculture International
Member of the Editorial board for
  • Aquaculture Research (2010-2022)
  • PLoS ONE (2012-present)
  • International Aquafeed (2010-present) 
  • Frontiers in Microbiology (2017-present)
Guest Associate Editor, Aquaculture Microbiology: The Role and Importance of Microbial Communities in Diversified and Sustainable Aquaculture special issue, Frontiers in Microbiology (2018)
Editor, Functional Aquafeeds special issue, Journal of the World Aquaculture Society (2018)
Chairperson for
  •  The Animal and Veterinary Sciences & Agro-food biotechnology evaluation Panel of the 5th (2022) Edition of the Stimulus of Scientific Employment, Individual Support Call (CEECInd 5th Edition), The Portuguese Foundation for Science and Technology (FCT)
  •  The Animal and Veterinary Sciences & Agro-food biotechnology evaluation Panel of the 4th (2021) Edition of the Stimulus of Scientific Employment, Individual Support Call (CEECInd 4th Edition), The Portuguese Foundation for Science and Technology (FCT)
Panel member for 
  • National Oceanic and Atmospheric Administration (NOAA; USA) National Sea Grant 2022 Early State Propagation Strategies for Aquaculture Species Competition
  • The Portuguese Foundation for Science and Technology (FCT) SR&TD Project Grants call, Agriculture, Forestry and Fisheries Panel, 2020
  • FCT Stimulus of Scientific Employment, Individual Support call (CEECInd), Agricultural and Veterinary Sciences Panel of the (2017, 2018, 2019, 2020 & 2023 calls)
  • Research Council of Norway (RCN) Researcher Project and Young Research Talents panel, 2019 & 2023 calls
  • The National Agency for the Evaluation of Universities and Research Institutes (ANVUR), Italy; eValuation of Quality of Research (VQR) (2004-2010 & 2011-2014 rounds)
Academic Adviser to the Commonwealth Scholarship Commission (CSC).

Key publications

(2014) Aquaculture Nutrition. Wiley , DOI
View all publications
Teaching

Teaching

Teaching interests

Programme Leader:
MSc Sustainable Aquaculture and Fisheries
Module leader:
BIO505: Research Project 
BIO504: Health and Production in Aquaculture 
BIO5208: Contemporary Issues in Aquaculture

Staff serving as external examiners


External examiner for MPhil/PhD students:  
University of Northampton, UK 
University of Stirling, UK 
University of the West of Scotland, 
UK Norwegian University of Life Sciences, Norway 
University of Eastern Finland, Finland 
The Universidade do Porto, Portugal 
Gorgan University of Agricultural Sciences and Natural Resources, Iran 
University of Tasmania, Australia 
Universidad de La Sabana, Colombia
External examiner for the MSc Sustainable Aquaculture programme, University of Stirling 
Research

Research

Research interests

Fish Nutrition and Health Research Team Leader 
My research activities have received funding to investigate aspects of fish health, nutrition, microbiome and aquafeed sustainability. Themes of interest include better understanding of host-microbe interactions, dysbiosis, mucosal health, enteritis and intestinal inflammation, functional feed additives and novel raw materials for use in aquafeeds. This research programme spans many commercially relevant species including rainbow trout, Atlantic salmon, carp and Nile tilapia, and the model species, zebrafish. 

Research projects

Research groups

Research degrees awarded to supervised students

Supervision of PhD students -12 completions as Director of Studies, 8 completions as second supervisor

Grants & contracts

My research programme has been supported by the BBSRC, NERC, The Newton Fund, Innovate UK, charitable trusts and companies from the aquafeed sector. To date, the total funding generated is >£2 million.

  •  2023-2024 - Efficacy of a novel MOS to improve production and health of Atlantic salmon (Salmo salar) and common carp (Cyprinus carpio). Greensage Prebiotics Inc and Enterprise Solutions – R&D Solutions Fund Call 6, (PI)
  •  2023-24 - The potential of yeast-derived functional feed additives to alleviate enteritis-induced dysbiosis in Atlantic Salmon. Seale-Hayne Educational Trust, (Co-I)
  •  2023 - Antibacterial properties of formic acid. Commercial contract – Anpario Plc, (PI)
  •  2023-2025 - Prebiotics, Probiotics and Postbioitcs for the improvement of fish welfare. Postdoctoral Fellowship, Lallemand SAS. (PI)
  •  2022 - Antibacterial properties of essential oils. Commercial contract – Anpario Plc, (PI)
  •  2021-2024 - The potential of functional feed additives to alleviate dietary induced pathology, enteritis, in aquacultured fish species. Leiber-UoP PhD studentship, (DoS)
  •  2021 - Pathogen antagonism assays. Commercial contract - Skretting, Norway, (PI)
  •  2021-2022 - Assessment of bacterial SCP for use in Atlantic salmon (Salmo salar) diets. Commercial contract - EuroChem Ltd, (PI)
  •  2021-2022 - Microbial quantification. Commercial contract – Biomin GmbH, (PI)
  •  2018-2021 - Dietary applications of  yeast fractions to improve fish mucosal barriers. Commercial contract - Lallemand, (PI)
  •  2020-22 - Brewer’s yeast products enhance Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss) health. Commercial contract - Leiber GmbH, (PI)
  •  2019 - Evaluation of probiotics on Nile tilapia (Oreochromis niloticus) and Atlantic salmon (Salmo salar) health and growth. Commercial contract – Evonik, (PI)
  •  2018 - Fish microbiome research. Commercial contract - Skretting, Norway (PI), 
  •  2017-2019 - Innovate UK project (103346) Low Cost, High Quality, Algal Biomass for Aquaculture Feed, (Academic PI)
  •  2017-2019 - Assessing the efficacy of a novel galactooligosachharide to promote fish health and robustness. MPhil studentship, Clasado Biosciences, (DoS)
  •  2016-2017 - Aquafeeds for rainbow trout. Commercial contract - Skretting, Norway (PI), 
  •  2016-2018 - BBSRC project (BB/N024028/1) Mucosal health and microbiota during sea lice parasitism: effect of oral delivery of immunomodulants, (PI
  •  2016 - Functional feeds for the improvement of fish mucosal barrier health. Contractual work, Lallemand SAS, (PI)
  •  2016-2019 - Effects of dietary additives on growth performance, immunity and mucosal barriers of salmonids. Lallemand-UoP PhD studentship (DoS)
  •  2015-2017 - Gut health and immune function: the emerging role of gut microbiota in sustainable aquaculture, BBSRC-NERC project (BB/M026604/1), (Co-I)
  •  2015-2016 - Gilthead sea bream mucosal health. Commercial contracts, Lallemand SAS, (PI)
  •  2014 - Bacterial antagonism and prebiotic effects of Brewer’s yeast. Leiber GmbH, contractual work, (PI)
  •  2014-2023 - Functional feed additives to support fish health, production and welfare. Postdoctoral Fellowship, Lallemand SAS, (PI)
  •  2014 - Atlantic salmon microbiome project. Contractual work, Oslo Veterinary School (PI)
  •  2014 - Asian sea bass (Lates calcarifer) intestinal health project. Tereos-Syral, contractual work, (PI)
  •  2014 - Gut health and Probiotic workshop, CENIACUA, Colombia, (PI)
  •  2012-2015 - Synergen project. Alltech contractual work, (PI)
  •  2013-2014 - Functional feed additive applications for rainbow trout (Oncorhynchus mykiss). Lallemand SAS, commissioned work (PI)
  •  2012-2016 - The impacts of wheat gluten and scFOS on the health and production of juvenile rainbow trout (Oncorhynchus mykiss). PhD studentship, Tereos Syral, (DoS)
  •  2012-2013 - Preliminary assessment of probiotic efficacy on rainbow trout (Oncorhynchus mykiss) dietary digestibility. PML commissioned work, (PI)
  •  2012 - Lallemand Inc commissioned work, (PI)
  •  2012-2013 - Probiotic applications for the improvement of animal welfare and health. Seale-Hayne Educational Trust, (PI)
  •  2012 - Digestibility assessment of yeast protein concentrate. ABAgri, commissioned work, (PI)
  •  2011-2013 - Effects of dietary ingredients and feed additives on the health and production of European sea bass (Dicentrarchus labrax) for applications in aquaculture. Novus International, ResM studentship (DoS)
  •  2011-2014 - The effect of dietary probiotics on Nile tilapia, Oreochromis niloticus, health and growth performance. Biomin-UoP PhD studentship (DoS)
  •  2011-2012 - Improving Atlantic salmon health and welfare through sustainable and eco-friendly dietary supplementation; an academic and industrial collaboration between the UK, Chile, Norway and France. International Research Networking and Collaboration Scheme UoP-Lallemand Inc. research project, (PI)
  •  2011-2012 - Probiotic research project. Novus International, commissioned work, (PI)
  •  2011-2012 - Studentship, Lallemand Inc., (PI)
  •  2010 - University of Plymouth’s International Research Networking and Collaboration (IRNC) Scheme, (PI)
Publications

Publications

Key publications

(2014) Aquaculture Nutrition. Wiley , DOI

Key publications are highlighted

Journals
Articles
Rawling M, Schiavone M, Mugnier A, Leclercq E, Merrifield D, Foey A & Apper E (2023) 'Modulation of Zebrafish (Danio rerio) Intestinal Mucosal Barrier Function Fed Different Postbiotics and a Probiotic from Lactobacilli' Microorganisms 11, (12) , DOI Open access
Gufe C, Merrifield DL, Hoseinifar SH, Rattanarojpong T, Khunrae P & Abdel-Tawwab M (2023) 'Prebiotic effects of dietary xylooligosaccharides on fish gut microbiota, growth, and immunological parameters – a review' Annals of Animal Science 0, (0) , DOI Open access
Rawling M, Schiavone M, Apper E, Merrifield DL, Castex M, Leclercq E & Foey A (2023) 'Yeast cell wall extracts from Saccharomyces cerevisiae varying in structure and composition differentially shape the innate immunity and mucosal tissue responses of the intestine of zebrafish (Danio rerio)' Frontiers in Immunology 14, , DOI Open access
Rawling M, Leclercq E, Foey A, Castex M & Merrifield D (2021) 'A novel dietary multi-strain yeast fraction modulates intestinal toll-like-receptor signalling and mucosal responses of rainbow trout (Oncorhynchus mykiss)' PLoS One , DOI Open access
Leclercq E, Pontefract N, Rawling M, Valdenegro V, Aasum E, Andujar LV, Migaud H, Castex M & Merrifield D (2020) 'Dietary supplementation with a specific mannan-rich yeast parietal fraction enhances the gut and skin mucosal barriers of Atlantic salmon (Salmo salar) and reduces its susceptibility to sea lice (Lepeophtheirus salmonis)' Aquaculture 529, 735701-735701 , DOI Open access
de Souza Valente C, Rodiles A, Freire Marques MR & Merrifield DL (2020) 'White spot syndrome virus (WSSV) disturbs the intestinal microbiota of shrimp (Penaeus vannamei) reared in biofloc and clear seawater' Applied Microbiology and Biotechnology 104, (18) 8007-8023 , DOI
Mukherjee A, Rodiles A, Merrifield DL, Chandra G & Ghosh K (2020) 'Exploring intestinal microbiome composition in three Indian major carps under polyculture system: A high-throughput sequencing based approach' Aquaculture 524, 735206-735206 , DOI
Al-Hisnawi A, Davies SJ, Waines P, Emery M, Castex M, Gioacchini G, Carnevali O, Bickerdike R, Romero J & Merrifield DL (2020) 'Corrigendum to “Dietary synbiotic application modulates Atlantic salmon (Salmo salar) intestinal microbial communities and intestinal immunity” [Fish Shellfish Immunol. 35 (2013) 1948–1956]' Fish & Shellfish Immunology 101, 313-313 , DOI
Jaramillo-Torres A, Rawling MD, Rodiles A, Mikalsen HE, Johansen L-H, Tinsley J, Forberg T, Aasum E, Castex M & Merrifield DL (2019) 'Influence of Dietary Supplementation of Probiotic Pediococcus acidilactici MA18/5M During the Transition From Freshwater to Seawater on Intestinal Health and Microbiota of Atlantic Salmon (Salmo salar L.)' Frontiers in Microbiologyy 10, , DOI Open access
Al-Hisnawi A, Rodiles A, Rawling MD, Castex M, Waines P, Gioacchini G, Carnevali O & Merrifield DL (2019) 'Dietary probiotic Pediococcus acidilactici MA18/5M modulates the intestinal microbiota and stimulates intestinal immunity in rainbow trout ( Oncorhynchus mykiss )' Journal of the World Aquaculture Society 50, (6) 1133-1151 , DOI Open access
do Vale Pereira G, Pereira SA, Soares A, Mouriño JLP & Merrifield D (2019) 'Autochthonous probiotic bacteria modulate intestinal microbiota of Pirarucu, <i>Arapaima gigas</i>' Journal of the World Aquaculture Society 50, (6) 1152-1167 , DOI
Serra CR, Almeida EM, Guerreiro I, Santos R, Merrifield DL, Tavares F, Oliva-Teles A & Enes P (2019) 'Selection of carbohydrate-active probiotics from the gut of carnivorous fish fed plant-based diets' Scientific Reports 9, (1) , DOI Open access
Rawling MD, Pontefract N, Rodiles A, Anagnostara I, Leclercq E, Schiavone M, Castex M & Merrifield DL (2019) 'The effect of feeding a novel multistrain yeast fraction on European seabass (Dicentrachus labrax) intestinal health and growth performance' Journal of the World Aquaculture Society , DOI Open access
Gioacchini G, Ciani E, Pessina A, Cecchini C, Silvi S, Rodiles A, Merrifield DL, Olivotto I & Carnevali O (2018) 'Correction to: Effects of Lactogen 13, a New Probiotic Preparation, on Gut Microbiota and Endocrine Signals Controlling Growth and Appetite of Oreochromis niloticus Juveniles' Microbial Ecology 76, (4) 1075-1075 , DOI
Giorgia G, Elia C, Andrea P, Cinzia C, Stefania S, Ana R, Daniel ML, Ike O & Oliana C (2018) 'Effects of Lactogen 13, a New Probiotic Preparation, on Gut Microbiota and Endocrine Signals Controlling Growth and Appetite of Oreochromis niloticus Juveniles' Microbial Ecology 76, (4) 1063-1074 , DOI
SW V, DL M & E A (2018) 'The Effect of Dietary Wheat Gluten Products on Gut Morphology, Non-Specific Immune Parameters, and Allochthonous Intestinal Microbial Population of Juvenile Rainbow Trout (Oncorhynchus mykiss) Fed with a High Plant Protein Diet' Journal of Animal Research and Nutrition 03, (01) , DOI Open access
do Vale Pereira G, da Cunha DG, Pedreira Mourino JL, Rodiles A, Jaramillo-Torres A & Merrifield DL (2017) 'Characterization of microbiota in Arapaima gigas intestine and isolation of potential probiotic bacteria' Journal of Applied Microbiology , DOI
Falcinelli S, Rodiles A, Hatef A, Picchietti S, Cossignani L, Merrifield DL, Unniappan S & Carnevali O (2017) 'Dietary lipid content reorganizes gut microbiota and probiotic L. rhamnosus attenuates obesity and enhances catabolic hormonal milieu in zebrafish' Scientific Reports 7, (1) , DOI Open access
Gajardo K, Jaramillo-Torres A, Kortner TM, Merrifield DL, Tinsley J, Bakke AM & Krogdahl Å (2016) 'Alternative protein sources in the diet modulate microbiota and functionality in the distal intestine of Atlantic salmon ( Salmo salar )' Applied and Environmental Microbiology AEM.02615-16-AEM.02615-16 , DOI Open access
Torrecillas S, Mompel D, Caballero MJ, Montero D, Merrifield D, Rodiles A, Robaina L, Zamorano MJ, Karalazos V & Kaushik S (2016) 'Effect of fishmeal and fish oil replacement by vegetable meals and oils on gut health of European sea bass (Dicentrarchus labrax)' Aquaculture 468, 386-398 , DOI
Garjardo K, Kortner, TM, Krogdahl Å, Bakke AM, Merrifield DL & Henning S (2016) 'A high-resolution map of the gut microbiota in Atlantic salmon (Salmo salar): A basis for comparative gut microbial research' Scientific Reports 6, (0) 0-0 , DOI Open access
Merrifield (2016) 'Combined effects of exogenous enzymes and probiotic on Nile tilapia (Oreochromis niloticus) growth, intestinal morphology and microbiome' Aquaculture Open access
Adeoye AA, Jaramillo-Torres A, Fox SW, Merrifield DL & Davies SJ (2016) 'Supplementation of formulated diets for tilapia (Oreochromis niloticus) with selected exogenous enzymes: Overall performance and effects on intestinal histology and microbiota' Animal Feed Science and Technology 215, 133-143 Publisher Site , DOI Open access
Apper E, Weissman D, Respondek F, Guyonvarch A, Baron F, Boisot P, Rodiles A & Merrifield DL (2016) 'Hydrolysed wheat gluten as part of a diet based on animal and plant proteins supports good growth performance of Asian seabass (Lates calcarifer), without impairing intestinal morphology or microbiota' Aquaculture 453, 40-48 , DOI
Falcinelli S, Rodiles A, Unniappan S, Picchietti S, Gioacchini G, Merrifield DL & Carnevali O (2016) 'Probiotic treatment reduces appetite and glucose level in the zebrafish model' Scientific Reports 6, (1) , DOI Open access
Hoseinifar SH, Mirvaghefi A, Amoozegar MA, Merrifield DL & Ringø E (2015) '<i>In vitro</i>selection of a synbiotic and<i>in vivo</i>evaluation on intestinal microbiota, performance and physiological response of rainbow trout (<i>Oncorhynchus mykiss</i>) fingerlings' Aquaculture Nutrition 23, (1) 111-118 , DOI
Standen BT, Peggs DL, Rawling MD, Foey A, Davies SJ, Santos GA & Merrifield DL (2015) 'Dietary administration of a commercial mixed-species probiotic improves growth performance and modulates the intestinal immunity of tilapia, Oreochromis niloticus' Fish &amp; Shellfish Immunology 49, 427-435 , DOI Open access
Ringo E, Zhou Z, Vecino JLG, Wadsworth S, Romero J, Krogdahl A, Olsen RE, Dimitroglou A, Foey A & Davies S (2015) 'Effect of dietary components on the gut microbiota ofaquatic animals. A never-ending story?' AQUACULTURE NUTRITION 22, (2) 219-282 Author Site , DOI Open access
Standen BT, Rodiles A, Peggs DL, Davies SJ, Santos GA & Merrifield DL (2015) 'Modulation of the intestinal microbiota and morphology of tilapia, Oreochromis niloticus, following the application of a multi-species probiotic' Applied Microbiology and Biotechnology 99, (20) 8403-8417 , DOI Open access
Falcinelli S, Picchietti S, Rodiles A, Cossignani L, Merrifield DL, Taddei AR, Maradonna F, Olivotto I, Gioacchini G & Carnevali O (2015) 'Lactobacillus rhamnosus lowers zebrafish lipid content by changing gut microbiota and host transcription of genes involved in lipid metabolism' Sci Rep 5, Author Site , DOI Open access
Guerreiro I, Enes P, Rodiles A, Merrifield D & Oliva-Teles A (2015) 'Effects of rearing temperature and dietary short-chain fructooligosaccharides supplementation on allochthonous gut microbiota, digestive enzymes activities and intestine health of turbot ( Scophthalmus maximus L.) juveniles' Aquaculture Nutrition 22, (3) 631-642 , DOI
Pedrotti FS, Davies S, Merrifield DL, Marques MRF, Fraga APM, Mourino JLP & Fracalossi DM (2015) 'The autochthonous microbiota of the freshwater omnivores jundia (<i>Rhamdia quelen</i>) and tilapia (<i>Oreochromis niloticus</i>) and the effect of dietary carbohydrates' AQUACULTURE RESEARCH 46, (2) 472-481 , DOI
Güroy B, Mantoglu S, Merrifield DL & Guroy D (2014) 'Effects of dietary<i>Nutrafito Plus</i>on growth, haemotological parameters and total ammonia-nitrogen excretion of juvenile striped catfish<i>Pangasianodon hypophthalmus</i>' Aquaculture Research 47, (6) 1770-1777 , DOI
Guerreiro I, Enes P, Merrifield D, Davies S & Oliva-Teles A (2014) 'Effects of short-chain fructooligosaccharides on growth performance and hepatic intermediary metabolism in turbot (<i>Scophthalmus maximus</i>) reared at winter and summer temperatures' Aquaculture Nutrition 21, (4) 433-443 , DOI
Al-Hisnawi A, Ringø E, Davies SJ, Waines P, Bradley G & Merrifield DL (2014) 'First report on the autochthonous gut microbiota of brown trout (<i>Salmo trutta</i>Linnaeus)' Aquaculture Research 46, (12) 2962-2971 , DOI
Kühlwein H, Merrifield DL, Rawling MD, Foey AD & Davies SJ (2014) 'Effects of dietary β-(1,3)(1,6)-D-glucan supplementation on growth performance, intestinal morphology and haemato-immunological profile of mirror carp (Cyprinus carpio L.)' J Anim Physiol Anim Nutr (Berl) 98, (2) 279-289 Author Site , DOI Open access
Gioacchini G, Giorgini E, Olivotto I, Maradonna F, Merrifield DL & Carnevali O (2014) 'The Influence of Probiotics on Zebrafish Danio Rerio Innate Immunity and Hepatic Stress' ZEBRAFISH 11, (2) 98-106 , DOI
Rawling MD, Merrifield DL, Kuehlwein H, Snellgrove D, Gioacchini G, Carnevali O & Davies SJ (2014) 'Dietary modulation of immune response and related gene expression profiles in mirror carp (<i>Cyprinus carpio</i>) using selected exotic feed ingredients' AQUACULTURE 418, 177-184 , DOI
Kühlwein H, Emery MJ, Rawling MD, Harper GM, Merrifield DL & Davies SJ (2013) 'Effects of a dietary β-(1,3)(1,6)-D-glucan supplementation on intestinal microbial communities and intestinal ultrastructure of mirror carp (Cyprinus carpio L.)' J Appl Microbiol 115, (5) 1091-1106 Author Site , DOI
Abid A, Davies SJ, Waines P, Emery M, Castex M, Gioacchini G, Carnevali O, Bickerdike R, Romero J & Merrifield DL (2013) 'Dietary synbiotic application modulates Atlantic salmon (Salmo salar) intestinal microbial communities and intestinal immunity' Fish &amp; Shellfish Immunology 35, (6) 1948-1956 , DOI
Standen BT, Rawling MD, Davies SJ, Castex M, Foey A, Gioacchini G, Carnevali O & Merrifield DL (2013) 'Probiotic Pediococcus acidilactici modulates both localised intestinal- and peripheral-immunity in tilapia (Oreochromis niloticus)' Fish Shellfish Immunol 35, (4) 1097-1104 Author Site , DOI Open access
Merrifield DL, Shaw BJ, Harper GM, Saoud IP, Davies SJ, Handy RD & Henry TB (2013) 'Ingestion of metal-nanoparticle contaminated food disrupts endogenous microbiota in zebrafish (Danio rerio)' Environ Pollut 174, 157-163 Author Site , DOI
Daniels CL, Merrifield DL, Ringo E & Davies SJ (2013) 'Probiotic, prebiotic and synbiotic applications for the improvement of larval European lobster (<i>Homarus gammarus</i>) culture' AQUACULTURE 416, 396-406 , DOI
Guroy B, Ergun S, Merrifield DL & Guroy D (2013) 'Effect of autoclaved <i>Ulva</i> meal on growth performance, nutrient utilization and fatty acid profile of rainbow trout, <i>Oncorhynchus mykiss</i>' AQUACULTURE INTERNATIONAL 21, (3) 605-615 , DOI
Guroy B, Sahin I, Kayali S, Mantoglu S, Canan B, Merrifield DL, Davies SJ & Guroy D (2013) 'Evaluation of feed utilization and growth performance of juvenile striped catfish Pangasianodon hypophthalmus fed diets with varying inclusion levels of corn gluten meal' AQUACULTURE NUTRITION 19, (3) 258-266 , DOI
Soltani M, Pourkazemi M, Ahmadi MR, Taherimirghead A, Merrifield DL & Masouleh AS (2013) 'Genetic diversity of lactic acid bacteria in the intestine of Persian sturgeon fingerlings' JOURNAL OF APPLIED ICHTHYOLOGY 29, (3) 494-498 , DOI
Askarian F, Sperstad S, Merrifield DL, Ray AK & Ringo E (2013) 'The effect of different feeding regimes on enzyme activities of gut microbiota in Atlantic cod (Gadus morhua L.)' AQUACULTURE RESEARCH 44, (5) 841-846 , DOI
Guroy D, Sahin I, Guroy B, Merrifield DL, Bulut M & Tekinay AA (2013) 'Replacement of fishmeal with rice protein concentrate in practical diets for European sea bass Dicentrarchus labrax reared at winter temperatures' AQUACULTURE RESEARCH 44, (3) 462-471 , DOI
Rawling MD, Merrifield DL, Snellgrove DL, Kühlwein H, Adams A & Davies SJ (2012) 'Haemato-immunological and growth response of mirror carp (Cyprinus carpio) fed a tropical earthworm meal in experimental diets' Fish Shellfish Immunol 32, (6) 1002-1007 Author Site , DOI
Guroy D, Guroy B, Merrifield DL, Tekinay AA, Davies SJ & Sahin I (2012) 'Effects of fish oil and partial fish meal substitution with oilseed oils and meals on growth performance, nutrient utilization and health of the rainbow trout <i>Oncorhynchus mykiss</i>' AQUACULTURE INTERNATIONAL 20, (3) 481-497 , DOI
Gioacchini G, Giorgini E, Merrifield DL, Hardiman G, Borini A, Vaccari L & Carnevali O (2012) 'Probiotics Can Induce Follicle Maturational Competence: The <i>Danio rerio</i> Case' BIOLOGY OF REPRODUCTION 86, (3) , DOI
Omar SS, Merrifield DL, Kuehlwein H, Williams PEV & Davies SJ (2012) 'Biofuel derived yeast protein concentrate (YPC) as a novel feed ingredient in carp diets' AQUACULTURE 330, 54-62 , DOI
Soleimani N, Hoseinifar SH, Merrifield DL, Barati M & Abadi ZH (2012) 'Dietary supplementation of fructooligosaccharide (FOS) improves the innate immune response, stress resistance, digestive enzyme activities and growth performance of Caspian roach (<i>Rutilus rutilus</i>) fry' FISH & SHELLFISH IMMUNOLOGY 32, (2) 316-321 , DOI
Guroy D, Sahin I, Guroy B, Altin A & Merrifield DL (2012) 'Effect of Dietary Protein Level on Growth Performance and Nitrogen Excretion of the Yellow Tail Cichlid, <i>Pseudotropheus acei</i>' ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH 64,
Pérez-Sánchez T, Balcázar JL, García Y, Halaihel N, Vendrell D, de Blas I, Merrifield DL & Ruiz-Zarzuela I (2011) 'Identification and characterization of lactic acid bacteria isolated from rainbow trout, Oncorhynchus mykiss (Walbaum), with inhibitory activity against Lactococcus garvieae' J Fish Dis 34, (7) 499-507 Author Site , DOI
Güroy D, Güroy B, Merrifield DL, Ergün S, Tekinay AA & Yigit M (2011) 'Effect of dietary Ulva and Spirulina on weight loss and body composition of rainbow trout, Oncorhynchus mykiss (Walbaum), during a starvation period' J Anim Physiol Anim Nutr (Berl) 95, (3) 320-327 Author Site , DOI
Merrifield DL, Harper GM, Mustafa S, Carnevali O, Picchietti S & Davies SJ (2011) 'Effect of dietary alginic acid on juvenile tilapia (Oreochromis niloticus) intestinal microbial balance, intestinal histology and growth performance' Cell Tissue Res 344, (1) 135-146 Author Site , DOI
Hoseinifar SH, Mirvaghefi A, Amiri BM, Rostami HK & Merrifield DL (2011) 'The effects of oligofructose on growth performance, survival and autochthonous intestinal microbiota of beluga (<i>Huso huso</i>) juveniles' AQUACULTURE NUTRITION 17, (5) 498-504 , DOI
Perez-Sanchez T, Luis Balcazar J, Merrifield DL, Carnevali O, Gioacchini G, de Blas I & Ruiz-Zarzuela I (2011) 'Expression of immune-related genes in rainbow trout (<i>Oncorhynchus mykiss</i>) induced by probiotic bacteria during <i>Lactococcus garvieae</i> infection' FISH & SHELLFISH IMMUNOLOGY 31, (2) 196-201 , DOI
Hoseinifar SH, Mirvaghefi A & Merrifield DL (2011) 'The effects of dietary inactive brewer's yeast <i>Saccharomyces cerevisiae</i> var. <i>ellipsoideus</i> on the growth, physiological responses and gut microbiota of juvenile beluga (<i>Huso huso</i>)' AQUACULTURE 318, (1-2) 90-94 , DOI
Hoseinifar SH, Mirvaghefi A, Merrifield DL, Amiri BM, Yelghi S & Bastami KD (2011) 'The study of some haematological and serum biochemical parameters of juvenile beluga (Huso huso) fed oligofructose' FISH PHYSIOLOGY AND BIOCHEMISTRY 37, (1) 91-96 , DOI
Merrifield DL, Bradley G, Harper GM, Baker RTM, Munn CB & Davies SJ (2011) 'Assessment of the effects of vegetative and lyophilized <i>Pediococcus acidilactici</i> on growth, feed utilization, intestinal colonization and health parameters of rainbow trout (<i>Oncorhynchus mykiss</i> Walbaum)' AQUACULTURE NUTRITION 17, (1) 73-79 , DOI
Dimitroglou A, Merrifield DL, Carnevali O, Picchietti S, Avella M, Daniels C, Güroy D & Davies SJ (2011) 'Microbial manipulations to improve fish health and production--a Mediterranean perspective' Fish Shellfish Immunol 30, (1) 1-16 Author Site , DOI
Harper GM, Monfort M, Saoud IP, Emery M, Mustafa S, Rawling M, Enyon B, Davies SJ & Merrifield DL (2011) 'An ex vivo approach to studying the interactions of Pediococcus acidilactici and Vibrio (Listonella) anguillarum in the anterior intestine of rainbow trout Oncorhynchus mykiss' Aquaculture research and development , DOI
Francesco Lombardo GG (2011) 'Effects of Probiotic on Zebrafish Reproduction' Journal of Aquaculture Research &amp; Development s1, , DOI
(2011) 'Evaluation of Prebiotic and Probiotic Effects on the Intestinal Gut Microbiota and Histology of Atlantic salmon (Salmo salar L.)' Journal of Aquaculture Research &amp; Development s1, , DOI
Zhigang Zhou DM (2011) 'Probiotic and Prebiotic Applications in Aquaculture' Journal of Aquaculture Research &amp; Development s1, , DOI
Ferguson RMW, Merrifield DL, Harper GM, Rawling MD, Mustafa S, Picchietti S, Balcázar JL & Davies SJ (2010) 'The effect of Pediococcus acidilactici on the gut microbiota and immune status of on-growing red tilapia (Oreochromis niloticus)' J Appl Microbiol 109, (3) 851-862 Author Site , DOI
Merrifield DL, Dimitroglou A, Bradley G, Baker RTM & Davies SJ (2010) 'Probiotic applications for rainbow trout (<i>Oncorhynchus mykiss</i> Walbaum) I. Effects on growth performance, feed utilization, intestinal microbiota and related health criteria' AQUACULTURE NUTRITION 16, (5) 504-510 , DOI
Merrifield DL, Bradley G, Baker RTM & Davies SJ (2010) 'Probiotic applications for rainbow trout (<i>Oncorhynchus mykiss</i> Walbaum) II. Effects on growth performance, feed utilization, intestinal microbiota and related health criteria postantibiotic treatment' AQUACULTURE NUTRITION 16, (5) 496-503 , DOI
Hoseinifar SH, Zare P & Merrifield DL (2010) 'The effects of inulin on growth factors and survival of the Indian white shrimp larvae and postlarvae (<i>Fenneropenaeus indicus</i>)' AQUACULTURE RESEARCH 41, (9) e348-e352 , DOI
Merrifield DL, Harper GM, Dimitroglou A, Ringo E & Davies SJ (2010) 'Possible influence of probiotic adhesion to intestinal mucosa on the activity and morphology of rainbow trout (<i>Oncorhynchus mykiss</i>) enterocytes' AQUACULTURE RESEARCH 41, (8) 1268-1272 , DOI
Daniels CL, Merrifield DL, Boothroyd DP, Davies SJ, Factor JR & Arnold KE (2010) 'Effect of dietary <i>Bacillus</i> spp. and mannan oligosaccharides (MOS) on European lobster (<i>Homarus gammarus</i> L.) larvae growth performance, gut morphology and gut microbiota' AQUACULTURE 304, (1-4) 49-57 , DOI
Dimitroglou A, Merrifield DL, Spring P, Sweetman J, Moate R & Davies SJ (2010) 'Effects of mannan oligosaccharide (MOS) supplementation on growth performance, feed utilisation, intestinal histology and gut microbiota of gilthead sea bream (<i>Sparus aurata</i>)' AQUACULTURE 300, (1-4) 182-188 , DOI
Merrifield DL, Guroy D, Guroy B, Emery MJ, Llewellyn CA, Skill S & Davies SJ (2010) 'Assessment of <i>Chlorogloeopsis</i> as a novel microbial dietary supplement for red tilapia (<i>Oreochromis niloticus</i>)' AQUACULTURE 299, (1-4) 128-133 , DOI
Dimitroglou A, Merrifield DL, Moate R, Davies SJ, Spring P, Sweetman J & Bradley G (2009) 'Dietary mannan oligosaccharide supplementation modulates intestinal microbial ecology and improves gut morphology of rainbow trout, Oncorhynchus mykiss (Walbaum)' J Anim Sci 87, (10) 3226-3234 Author Site , DOI
Merrifield DL, Dimitroglou A, Bradley G, Baker RTM & Davies SJ (2009) 'Soybean meal alters autochthonous microbial populations, microvilli morphology and compromises intestinal enterocyte integrity of rainbow trout, Oncorhynchus mykiss (Walbaum)' J Fish Dis 32, (9) 755-766 Author Site , DOI
Rawling MD, Merrifield DL & Davies SJ (2009) 'Preliminary assessment of dietary supplementation of Sangrovit® on red tilapia (Oreochromis niloticus) growth performance and health' Aquaculture 294, (1-2) 118-122 , DOI
Ergun S, Soyuturk M, Guroy B, Guroy D & Merrifield D (2009) 'Influence of Ulva meal on growth, feed utilization, and body composition of juvenile Nile tilapia (Oreochromis niloticus) at two levels of dietary lipid' AQUACULTURE INTERNATIONAL 17, (4) 355-361 , DOI
Merrifield DL, Burnard D, Bradley G, Davies SJ & Baker RTM (2009) 'Microbial community diversity associated with the intestinal mucosa of farmed rainbow trout (<i>Oncoryhnchus mykiss</i> Walbaum)' AQUACULTURE RESEARCH 40, (9) 1064-1072 , DOI
Reviews
Merrifield DL, Dimitroglou A, Foey A, Davies SJ, Baker RTM, Bogwald J, Castex M & Ringo E (2010) 'The current status and future focus of probiotic and prebiotic applications for salmonids' AQUACULTURE 302, (1-2) 1-18 , DOI
Books
(2014) Aquaculture Nutrition. Wiley , DOI
Merrifield DL & Ringø E (2014) Preface.
Chapters
Rodiles A, Rawling MD, Peggs DL, do Vale Pereira G, Voller S, Yomla R, Standen BT, Bowyer P & Merrifield DL (2017) 'Probiotic Applications for Finfish Aquaculture' Probiotics and Prebiotics in Animal Health and Food Safety Springer International Publishing 197-217 , DOI
Merrifield DL & Rodiles A (2015) '10 The fish microbiome and its interactions with mucosal tissues' Mucosal Health in Aquaculture Elsevier 273-295 , DOI
Merrifield DL & Rodiles A (2015) 'The fish microbiome and its interactions with mucosal tissues' Mucosal Health in Aquaculture, 1st Edition Academic Press
Merrifield DL, Balcázar JL, Daniels C, Zhou Z, Carnevali O, Sun Y, Hoseinifar SH & Ringø E (2014) 'Indigenous Lactic Acid Bacteria in Fish and Crustaceans' Wiley 128-168 , DOI
Zhou Z, Yao B, Romero J, Waines P, Ringø E, Emery M, Liles MR & Merrifield DL (2014) 'Methodological Approaches Used to Assess Fish Gastrointestinal Communities' Wiley 101-127 , DOI
Lauzon HL, Pérez-Sánchez T, Merrifield DL, Ringø E & Balcázar JL (2014) 'Probiotic Applications in Cold Water Fish Species' Wiley 223-252 , DOI
Carnevali O, Sun Y, Merrifield DL, Zhou Z & Picchietti S (2014) 'Probiotic Applications in Temperate and Warm Water Fish Species' Wiley 253-289 , DOI
Merrifield DL & Carnevali O (2014) 'Probiotic Modulation of the Gut Microbiota of Fish' Wiley 185-222 , DOI
Lauzon HL, Dimitroglou A, Merrifield DL, Ringø E & Davies SJ (2014) 'Probiotics and Prebiotics: Concepts, Definitions and History' Wiley 169-184 , DOI
Romero J, Ringø E & Merrifield DL (2014) 'The Gut Microbiota of Fish' Wiley 75-100 , DOI
Merrifield DL, Olsen RE, Myklebust R & Ringo E (2011) 'Dietary Effect of Soybean (Glycine max) Products on Gut Histology and Microbiota of Fish' Soybean and Nutrition Rijeka, Croatia InTech 231-250 Publisher Site
Conference Papers
Falcinelli S, Rodiles A, Hatef A, Picchietti S, Cossignani L, Merrifield DL, Unniappan S & Carnevali O (2018) 'Influence of Probiotics Administration on Gut Microbiota Core' Lippincott, Williams & Wilkins 1-1 , DOI
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LinkedIn profile
Scopus Young Researchers in Biological Sciences: ranked top 5 nationally 2011
Early Career Enterprising Researcher Award, Vice-Chancellor's Enterprise Awards 2010

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