Ioannis Vatsos
Professor
Faculty of Biosciences and Aquaculture
Background
Education
Diplomate and former Board member of the European Veterinary College of Aquatic Animal Health (ECAAH).
PhD in Aquatic Veterinary Studies, Institute of Aquaculture, Stirling University, Scotland, UK.
Master's degree in Aquatic Veterinary Studies/Pathobiology, Institute of Aquaculture, Stirling University, Scotland, UK.
Bachelor's degree (PTYCHIO) in Veterinary Medicine, Aristotle University of Thessaloniki, Greece.
Previous employment
Lecturer/Assistant Professor in Farming and Pathology of Aquatic Organisms at the Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Greece.
Research Scientist, Institute of Aquaculture, Hellenic Centre for Marine Research (H.C.M.R.), Athens, Greece.
Visiting Associate Lecturer Ichthyology-Aquaculture, University of Ioannina, Department of Biological Applications and Technologies, Greece.
Research Projects Manager in SELONDA AQUACULTURE SA, Greece, responsible for projects related with the health of reared fish.
Field of expertise
Farming and diseases of aquatic organisms, with emphasis on microbiology and histology.
Study Program Responsible
Joint Bachelor in Animal Science
Course Responsible
Currently
General Histology (Bachelor level), Farming and Health Management of Aquatic Organisms (Bachelor level), Principles in Animal Experimentation (Master level).
Previously
General Microbiology (Bachelor level), Ichthyology (Bachelor level), Fish Farming and Fish Diseases (Bachelor level), Fish Histology (Master level) .
2025
Torula yeast can reduce the dependence on plant proteins in Atlantic salmon feeds: Effects on growth, nutrient utilization, mucosal health, and spleen gene expression 2025 Aquaculture - Maja Erichsen, S M Majharul Islam, Simon Leigh Wadsworth, Aleksei Krasnov, Kyla Zatti, Marianne Vaadal, Viviane Verlhac Trichet, Mette Sørensen, Ioannis Vatsos
Co‐Supplementation of Vitamins C and E Ameliorates Growth, Blood Biochemistry, Histomorphometry and Mucosal Health in Nile Tilapia,
Oreochromis niloticus
Under High Stocking Density 2025 Aquaculture, Fish and Fisheries - Sudipta K. Nag, S M Majharul Islam, Bethi Das, Md. Fazle Rohani, Md. Rajib Sharker, Al Azim, Ioannis Vatsos, Muhammad A. B. Siddik
Effects of full-fat black soldier Fly Larvae and yellow mealworm meals on blood composition and liver health in Atlantic salmon (Salmo salar) 2025 Aquaculture - S M Majharul Islam, Mette Sørensen, Muhammad A.B. Siddik, Florence Perera Willora , Monica Fengsrud Brinchmann, Kirill Spiten, Kyla Zatti, Kim D. Thompson, Ioannis Vatsos
Comparison of three point-of-care blood testing instruments for rapid on-site health monitoring of Atlantic salmon Salmo salar 2025 Diseases of Aquatic Organisms - Saad Zah, Eric Bendiksen, Ioannis Vatsos, Andre Madsen, Kjetil Korsnes
Leveraging blood biomarkers and machine learning to determine smoltifcation status of Atlantic salmon (Salmo salar) 2025 Aquaculture International - Saad Zah, Andre Madsen, Eric Bendiksen, Ioannis Vatsos, Kjetil Korsnes
2024
Insect meal in aquafeeds: A sustainable path to enhanced mucosal immunity in fish 2024 Fish and Shellfish Immunology - S M Majharul Islam, Muhammad A. B. Siddik, Mette Sørensen, Monica Fengsrud Brinchmann, Kim Thompson, David Francis, Ioannis Vatsos
Earthworm, Perionyx excavatus as an alternate protein source for Nile tilapia: Effects on growth performance, blood biochemistry, erythrocyte morphology and intestinal health 2024 Aquaculture International - Bethi Das, S M Majharul Islam, Sudipta Kumar Nag, Ioannis Vatsos, Muhammad A.B. Siddik, Al Azim
Mucosal barrier status in Atlantic salmon fed rapeseed oil and Schizochytrium oil partly or fully replacing fish oil through winter depression 2024 Fish and Shellfish Immunology - S M Majharul Islam, Florence Chandima Perera Willora Arachchilage, Mette Sørensen, Md Golam Rbbani, Muhammad A.B. Siddik, Kyla Zatti, Shruti Gupta, Ian Carr, Ester Santigosa, Monica Fengsrud Brinchmann, Kim D. Thompson, Ioannis Vatsos
2023
Effects of n-3 HUFA-enriched Artemia on growth, biochemical response, skeletal morphology and stress resistance of Asian sea bass (Lates calcarifer) larvae reared at high temperature 2023 Aquaculture - Hung Pham, Muhammad A.B. Siddik, Md Arifur Rahman, Lan Tuyet Huynh, Ashfagun Nahar, Ioannis Vatsos
Supplementation of lactic acid bacteria has positive effects on the mucosal health of Atlantic salmon (Salmo salar) fed soybean meal 2023 Aquaculture Reports - Nadanasabesan Nimalan, Solveig Lysfjord Sørensen, Adriána Fečkaninová, Jana Koščová, Dagmar Mudroňová, Soňa Gancarčíková, Ioannis Vatsos, Bisa Saraswathy, Kiron Viswanath, Mette Sørensen
2022
Nutritional Profiling of Wild (Pangasius pangasius) and Farmed (Pangasius hypophthalmus) Pangasius Catfish with Implications to Human Health 2022 Fishes - Suprakash Chakma, Md Arifur Rahman, Muhammad A.B. Siddik, Sazedul Hoque, S M Majharul Islam, Ioannis Vatsos
Replacement of fishmeal with plant protein in the diets of juvenile lumpfish (Cyclopterus lumpus, L. 1758): Effects on digestive enzymes and microscopic structure of the digestive tract 2022 Aquaculture - Florence Chandima Perera Willora Arachchilage, Ioannis Vatsos, Panagiotis Mallioris, Bordignon Francesco, Sven Keizer, Silvia Martinez-Llorens, Mette Sørensen, Ørjan Hagen
Management of Hypercholesterolemia Through Dietary ß-glucans–Insights From a Zebrafish Model 2022 Frontiers in Nutrition - Adnan Hussain Gora, Saima Rehman, Viswanath Kiron, Jorge Dias, Jorge Manuel de Oliveira Fernandes, Pål Asgeir Olsvik, Prabhugouda Siriyappagouder, Ioannis Vatsos, Ulrike Schmid-Staiger, Frick Konstantin, Cardoso Miguel
Selenium-Enriched Spirulina (SeE-SP) Enhance Antioxidant Response, Immunity, and Disease Resistance in Juvenile Asian Seabass, Lates calcarifer 2022 Antioxidants - Muhammad A.B. Siddik, Ioannis Vatsos, Md Arifur Rahman, Hung Duc Pham
Utilization of Nannochloropsis oceanica in plant-based feeds by Atlantic salmon (Salmo salar) 2022 Aquaculture - Cui Liu, Anjana Mahesh Palihawadana, Nimalan Nadanasabesan, Ghana Kalerammana Vasanth, Ioannis Vatsos, Jorge Dias, Luisa M. P. Valente, Giulia Micallef, Mette Sørensen, Kiron Viswanath
2021
Mucosal barrier status in Atlantic salmon fed marine or plant-based diets supplemented with probiotics 2021 Aquaculture - Nimalan Nadanasabesan, Solveig Lysfjord Sørensen, Adriána Fečkaninová, Jana Koščová, Dagmar Mudroňová, Soňa Gancarčíková, Ioannis Vatsos, Bisa Saraswathy, Viswanath Kiron, Mette Sørensen
Animal Welfare Issues in Capture-Based Aquaculture 2021 Animals - Uthpala Chandararathna, Martin Haugmo Iversen, Kjetil Korsnes, Mette Sørensen, Ioannis Vatsos
Modulation of intestinal health and hepatic vacuolation in gilthead sea bream (Sparus aurata) juveniles by a mixture of dietary esterified butyrins, emulsifiers from plants and yeast extracts at low and high fish meal inclusion 2021 Animal Feed Science and Technology - Panagiotis Mallioris, Yannis Kotzamanis, Sofia Vardali, Efstratios Roussos, Vasiliki Ilia, Elissavet Paschali, Dimitrios Kampantais, Dimitrios Bouziotis, Alireza Khadem, Ioannis Vatsos
2020
High taurine supplementation in plant protein-based diets improves growth and organoleptic characteristics of European seabass (Dicentrarchus labrax) 2020 Scientific Reports - Yannis Kotzamanis, Theofania Tsironi, Andreas Brezas, Kriton Grigorakis, Vassiliki Ilia, Ioannis Vatsos, Nicholas Romano, Jan Van Eys, Vikas Kumar
2019
Taurine supplementation in high-soy diets affects fillet quality of European sea bass (Dicentrarchus labrax) 2019 Aquaculture - Yannis Kotzamanis, Vikas Kumar, Theofania Tsironi, Kriton Grigorakis, Vasiliki Ilia, Ioannis Vatsos, Andreas Brezas, van Jan Eys, Enric Gisbert
2016
2015
Use of frozen mussel (Mytilus galloprovincialis) and mussel meal in the diet of sea bass (Dicentrarchus labrax Linnaeus, 1758) and sea bream (Sparus aurata Linnaeus, 1758) fingerlings – a preliminary study 2015 Aquaculture Research - Akrivos Anagnostidis, Maria Michailidou, Ioannis Vatsos, A Tsopelakos, H Miliou, Panagiotis Angelidis
Integrated aquaculture - An old concept with new applications in Greece 2015 International Journal of Data Analysis Techniques and Strategies - Ioannis Vatsos, Panagiotis Angelidis, Alexandros Theodoridis, Christos Batzios
2014
Seaweed extracts as antimicrobial agents in aquaculture 2014 Journal of Applied Phycology - Ioannis N. Vatsos, Celine Rebours
2013
Effect of culture system on the prevalence of parasites of the Mediterranean mussel Mytilus galloprovincialis (Lamark, 1819) 2013 Journal of the Hellenic Veterinary Medical Society - Dimitrios Karagiannis, Ioannis N Vatsos, Alexandros Theodoridis, Panagiotis Angelidis
2012
Identification of Tenacibaculum maritimum strains from marine farmed fish in Greece 2012 The Veterinary Record - MN Kolygas, E Gourzioti, Ioannis Vatsos, F Athanassopoulou
Evaluation of six anaesthetics for use with the Mediterranean mussel Mytilus galloprovincialis. 2012 Israeli Journal of Aquaculture (Bamidgeh) - Ioannis Vatsos, Panagiotis Angelidis
Haematological and immunological responses of sea bass
(Dicentrarchus labrax) to a short-term exposure to increased
water levels of nitrate 2012 Iranian Journal of Fisheries Sciences (IJFS) - D Vectesi, Yannis Kotzamanis, Morgan Henry, Ioannis Vatsos
Identification of Tenacibaculum maritimum strains from marine farmed fish in Greece. 2012 The Veterinary Record - Markos Kolygas, E Gourzioti, Ioannis Vatsos, Efi Athanassopoulou
2011
Effects of atrazine on the viability and the formation of byssus of the mussel Mytilus galloprovincialis 2011 Aquaculture International - Dimitrios Karagiannis, Ioannis Vatsos, Panagiotis Angelidis
Human diseases associated with fish pathogens 2011 Scientific Annals of the Danube Delta Institute - Ioannis Vatsos, Panagiotis Angelidis
2010
Monitoring stress in fish by applying image analysis to their skin mucous cells. 2010 European journal of histochemistry - Ioannis, N Vatsos, Yannis Kotzamanis, Morgan Henry, Panagiotis Angelidis, Maria Alexis
Water quality and fish diseases 2010 Journal of the Hellenic Veterinary Medical Society - Ioannis Vatsos, Panagiotis Angelidis
2009
Surgical excision of skin folds from the head of a goldfi sh Carassius auratus (Linnaeus 1758) 2009 The European Journal of Companion Animal Practice (EJCAP) - Panagiotis Angelidis, Ioannis Vatsos, Dimitrios Karagiannis
2008
Aquaculture Bacterial Bank in Greece; Methodology and first results. 2008 Scientific Annals of the Danube Delta Institute - Panagiotis Angelidis, Maria Yiagnisis, Ioannis Vatsos, Konstantina Bitchava, Konstantinos Teliousis, N Solomakos, Fotini Athanassopoulou
2007
First report of Listonella anguillarum isolation from diseased big scale sand smelt, Atherina boyeri Risso 1810, in Limnos, Greece 2007 Bulletin of The European Association of Fish Pathologists - Maria Yiagnisis, Ioannis Vatsos, C Kyriakou, Maria Alexis
Review of disease interactions and pathogen exchange between farmed and wild finfish and shellfish in Europe. 2007 - R Raynard, Thomas Wahli, Ioannis Vatsos, Mortensen Stein
2006
Ceratomyxa spp. (Myxosporea) infection in cultured shi drum (Umbrina cirrosa) and cultured brown meagre (Sciaena umbra) from Greece. 2006 Bulletin of The European Association of Fish Pathologists - Ioannis Vatsos, Maria Yiagnisis, Ioannis Karacostas
Colonisation of rainbow trout, Oncorhynchus mykiss (Walbaum), eggs by Flavobacterium psychrophilum the causative agent of rainbow trout fry syndrome. 2006 Journal of Fish Diseases - Ioannis Vatsos, Kim Thompson, Alexandra Adams
2004
Efficacy and toxicity of orally administrated anti-coccidial drugs for innovative treatments of Myxobolus spp. infection in Puntazzo puntazzo. 2004 Diseases of Aquatic Organisms - F Athanassopoulou, E Karagouni, E Dotsika, V Ragias, J Tavla, P Christofilloyanis, Ioannis Vatsos
2003
Starvation of Flavobacterium psychrophilum in broth, stream water and distilled water. 2003 Diseases of Aquatic Organisms - Ioannis Vatsos, Kim Thompson, Alexandra Adams
2002
Development of in situ hybridization and immunofluorescent antibody technique (IFAT) to detect Flavobacterium psychrophilum, in water samples. 2002 Aquaculture Research - Ioannis Vatsos, Kim Thompson, Alexandra Adams
2001
Adhesion of the fish pathogen Flavobacterium psychrophilum to unfertilized eggs of rainbow trout (Oncorhynchus mykiss) and n-hexadecane 2001 Letters in Applied Microbiology - Ioannis Vatsos, Kim Thompson, Alexandra Adams
2023
Micromorphological changes in the intestine of market ready Atlantic salmon fed on different microalgae biomass 2023 Aquaculture Europe 2023 - Viswanath Kiron, Nadanasabesan Nimalan, Micallef Giulia, Ioannis Vatsos, Kousoulaki Katerina, Kleinegris Dorinde M M, Zackary J.I., Valente Luisa M P, Dias Jorge, Sørensen Mette
2022
IMPROVED HEALTH STATUS OF ATLANTIC SALMON (SALMO SALAR) DURING SMOLTIFICATIONS AFTER REPLACING FISH OIL WITH ALGAL OIL 2022 Aquaculture Europe 2022 - S M Majharul Islam, Florence Chandima Perera Willora Arachchilage, Shruti Gupta, Ester Santigosa, Ian Carr, Kyla Zatti, Bisa Saraswathy, Viswanath Kiron, Mette Sørensen, Monica Fengsrud Brinchmann, Ioannis Vatsos
2021
The combination of two lactic acid bacterial species has greater potential to alleviate soybean meal-induced enteritis compared to the single use of each species 2021 Det 15. norske fiskeernæringsseminar, NOFIMA - Nimalan Nadanasabesan, Solveig Lysfjord Sørensen, Adriàna Feckaninovà, Jana Koščová, Dagmar Mudroňová, Soňa Gancarčíková, Ioannis Vatsos, Bisa Saraswathy, Viswanath Kiron, Mette Sørensen
2019
EFFECTS OF DIFFERENT DIETS AND INCORPORATION OF PROBIOTICS ON THE SKIN MORPHOLOGY OF ATLANTIC SALMON (SALMO SALAR) 2019 Aquaculture Europe - Ioannis Vatsos, Nimalan Nadanasabesan, Adriána Fečkaninová, Jana Koščová, Dagmar Mudroňová, Viswanath Kiron, Mette Sørensen
Evaluation of skin mucous cells of Atlantic salmon (Salmo salar) fed plant-based diets and probiotics 2019 19th INTERNATIONAL CONFERENCE ON DISEASES OF FISH AND SHELLFISH - Nimalan Nadanasabesan, Mette Sørensen, Viswanath Kiron, Ioannis Vatsos, Adriána Fečkaninová, Jana Koščová, Dagmar Mudroňová
DIETARY INTERVENTION STRENGTHENS THE SKIN PROTECTIVE BARRIER OF ATLANTIC SALMON (Salmo salar) 2019 Nord Global 2019 - Nimalan Nadanasabesan, Adriána Fečkaninová, Dagmar Mudroňová, Mette Sørensen, Ioannis Vatsos, Viswanath Kiron
2017
Microalgae and terrestrial ingredients in Feed for Spotted Wolffish 2017 Aquaculture Europe 2017 - A.K Ulset, I.H. Johnsen, Helene Rønquist Knutsen, O.H Ottesen, Mette Sørensen, Ioannis Vatsos, S Keizer, Willy Sandaa, Ørjan Hagen
2016
Polymorphus ardeae Belopolskaja, 1958 (Acanthocephala) infection in sea bass (Dicentrarchus Labrax Linnaeus, 1758) in Greece. 2016 Aquaculture Europe 2016 - K Oyreilidis, B Ragias, Ioannis Vatsos, K Fasseas, M,N Kolygas, F Athanassopoulou
2014
Utilization of winery by-products in gilthead sea bream (Sparus aurata) diets 2014 Aquaculture Europe 2014 - A Faldamis, Ioannis Vatsos, V Ilia, E Kouroupakis, G Aggelis, P Pantazis, Yannis Kotzamanis
2013
Effects of high dietary inclusion of soybean meal and navita 3010 soy supplemented with taurine on growth performance and muscle composition of European sea bass (Dicentrarchus labrax). 2013 Aquaculture Europe 2013 - Yannis Kotzamanis, Ioannis Vatsos, M Cremer, V Ilia, G Pyrenis, V Zonaras, Alejandro Buentello, J Van Eys
2012
Taurine supplementation of low fish meal diets improves growth performance and quality of european sea bass Dicentrarchus labrax. 2012 Aquaculture Europe 2012 - Yannis Kotzamanis, Ioannis Karacostas, K Grigorakis, Ioannis Vatsos, J Van Eys, M Cremer, V Ilia, G Pyrenis, Theofania Tsironi
2011
Εffects of high dietary inclusion of soybean meal and soy protein concentrate supplemented with different levels of taurine on growth performance and muscle composition of juvenile European sea bass (Dicentrarchus labrax). 2011 Aquaculture Europe 2011 - Yannis Kotzamanis, J Van Eys, Ioannis Karacostas, K Grigorakis, Ioannis Vatsos, M Andersen, V Ilia, G Pyrenis, Theofania Tsironi, M Cremer
2010
Effects of partial replacement of fish meal by soybean meal supplemented with different forms of synthetic amino acids on growth performance, serum chemistry, hepatic enzymatic activity and histology of juvenile European sea bass (Dicentrarchus labrax). 2010 Aquaculture Europe 2010 - Yannis Kotzamanis, J Van Eys, S Taylor, Ioannis Karacostas, M Andersen, M Cremer, V Ilia, M Mpourcha, E Antonopoulou, Ioannis Vatsos
Effects of oregano oil incorporated in the feed, on the development of histopathological lesions caused by the fish bacterial pathogen Photobacterium damselae subsp. piscicida in reared sea bream (Sparus aurata L.). 2010 14th Pan-Hellenic Conference of Ichthyologists - Maria Yiagnisis, Ioannis Vatsos, C Bithava, Maria Alexis, F Athanassopoulou
Use of the nitrogen of oyster culture effluent by the marine microalgae Isochrysis AFF. Galbana (CLONE T-ISO). 2010 Aquaculture Europe 2010 - C Symeonidis, Panagiotis Angelidis, A Kamarianos, Ioannis Vatsos, C Batzios
2009
Isolation and Identification of the bacterium Vibrio harveyi from marine fish cultured in Greece. 2009 11th Pan-Hellenic Veterinary Conference - Maria Yiagnisis, C Bithava, Panagiotis Angelidis, Ioannis Vatsos, F Athanassopoulou
2008
Evaluation of partial substitution of dietary fish meal by soybean meal supplemented with synthetic amino acids on growth performance, serum chemistry and histology of the juvenile European sea bass Dicentrarchus labrax and gilthead sea bream Sparus aurata. 2008 Aquaculture Europe 2008 - Yannis Kotzamanis, J Van Eys, S Taylor, N Lindley, M Andersen, G Petsas, L Atherinos, V Ilia, Ioannis Vatsos
2006
Performance parameters of sea bass (Dicentrarchus labrax) fed diets containing different legumes over a long rearing period. 2006 12th International Symposium on Fish Nutrition and Feeding - E Fountoulaki, Maria Alexis, K Koussoulaki, D Nikolopoulou, Ioannis Karacostas, Ioannis Nengas, Ioannis Vatsos, Morgan Henry, K Grigorakis, Yannis Kotzamanis
Rapeseed products extracted by different methods: digestible value for seabass (Dicentrarchus labrax) and sea bream (Sparus aurata) and effects on performance of fingerling sea bass. 2006 12th International Symposium on Fish Nutrition and Feeding - Yannis Kotzamanis, K Pappas-Skellas, Ioannis Vatsos, Morgan Henry, D Nikolopoulou, E Fountoulaki, Maria Alexis
Effects of four levels of oxygen on the growth of sea bass (Dicentrarchus labrax) 2006 8th Panhellenic Symposium Oceanography & Fisheries - Ioannis Vatsos, H Kalogiros, Maria Yiagnisis, Maria Alexis
2004
Bacteria of the genus Vibrio, isolated from wild diseases fish in Greece. 2004 37th CIESM Congress - Maria Yiagnisis, Maria Alexis, Ioannis Vatsos
2003
Novel treatments of Myxosporidia in Mediterranean fish and immunological response. 2003 11th International Conference of European Association of Fish Pathologists - F Athanassopoulou, E Karagouni, E Dotsika, Ioannis Vatsos, J Tavla, P Christofilloyanis, K Lytra, N Dourala