Costelloe, Eoin PhilipLorgen-Ritchie, MarleneKrol, ElzbietaNoguera, PatriciaBickerdike, RalphTinsley , JohnValdenegro, V.Douglas, AlexMartin, Samuel A.M.2025-02-282025-02-282025-04-15Costelloe, E P, Lorgen-Ritchie, M, Krol, E, Noguera, P, Bickerdike, R, Tinsley , J, Valdenegro, V, Douglas, A & Martin, S A M 2025, 'Microbial and histopathological insights into gill health of Atlantic salmon ( Salmo salar ) across Scottish aquaculture sites', Aquaculture, vol. 599, 742166. https://doi.org/10.1016/j.aquaculture.2025.7421660044-8486ORCID: /0000-0001-6606-1058/work/176746991ORCID: /0000-0001-8368-4353/work/176747715ORCID: /0000-0003-0289-6317/work/176747759https://hdl.handle.net/2164/25107Open Access via the Elsevier Agreement The authors would like to thank the staff at the Scottish Sea Farms sites for help in scoring of gills and during sampling. We also thank the Centre for Genome Enabled Biology and Medicine (CGEBM) at the University of Aberdeen, particularly Dr. Ewan Campbell, for help with amplification protocols, conducting 16S library preparation and sequencing. CRediT authorship contribution statement Eoin Costelloe: Methodology, Formal analysis, Data curation, Writing – original draft. Marlene Lorgen-Ritchie: Methodology, Formal analysis, Conceptualization, Visualization, Writing – review & editing, Writing – original draft. Elżbieta Król: Methodology, Conceptualization, Investigation, Writing – review & editing. Patricia Noguera: Methodology, Formal analysis, Data curation, Writing – review & editing. Ralph Bickerdike: Methodology, Conceptualization, Writing – review & editing. John Tinsley: Methodology, Conceptualization, Writing – review & editing. Victoria Valdenegro: Methodology, Conceptualization, Writing – review & editing. Alex Douglas: Methodology, Conceptualization, Writing – review & editing. Samuel A.M. Martin: Supervision, Methodology, Funding acquisition, Conceptualization, Writing – review & editing.102485773engSDG 14 - Life Below WaterComplex gill disease (CGD)Proliferative gill disease (PGD)16S rRNA sequencingGill microbial compositionMicrobial dysbiosisQH301 BiologySH Aquaculture. Fisheries. AnglingSupplementary DataQH301SHJournal article10.1016/j.aquaculture.2025.742166https://www.ncbi.nlm.nih.gov/bioproject/PRJNA1085241599