{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,12]],"date-time":"2026-07-12T06:30:51Z","timestamp":1783837851826,"version":"3.55.0"},"reference-count":30,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2025,4,30]],"date-time":"2025-04-30T00:00:00Z","timestamp":1745971200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Direcci\u00f3n General de Lucha Contra el Cambio Clim\u00e1tico y Medio Ambiente","award":["134\/2020"],"award-info":[{"award-number":["134\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>The Atlantic puffin (Fratercula arctica) is a seabird species characterized by great diving capabilities and transoceanic migratory behavior. These movements contribute to the dispersion of the species during migration, and episodes of mortality associated with migration may be a normal event in the dynamic of the Atlantic puffin populations. This study aimed to describe the anatomopathological findings of an unusual mortality event of Atlantic puffins observed during the non-breeding period along the coast of the Canary Islands. The most consistent gross finding during necropsy was generalized muscle atrophy and fat depletion. The main histological findings were centered in the urinary tract, with dilation and inflammation of the primary ureter branch and medullary cones, and intraluminal trematodes identified as Renicola sloanei based on morphology and molecular analysis. Influenza virus infection was ruled out. The postmortem investigations performed in this mortality event of Atlantic puffins indicate that the animals were severely emaciated and suffered from nephropathy. The etiopathological investigation performed in relation to this mortality event of Atlantic puffins indicates starvation associated with bad weather conditions during migratory movement as the most likely cause of the unusual mortality event.<\/jats:p>","DOI":"10.3390\/ani15091281","type":"journal-article","created":{"date-parts":[[2025,5,1]],"date-time":"2025-05-01T03:50:43Z","timestamp":1746071443000},"page":"1281","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Unusual Mass Mortality of Atlantic Puffins (Fratercula arctica) in the Canary Islands Associated with Adverse Weather Events"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0409-6156","authenticated-orcid":false,"given":"Cristian M.","family":"Su\u00e1rez-Santana","sequence":"first","affiliation":[{"name":"Unit of Veterinary Histology and Pathology, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria (ULPGC), 35413 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1211-258X","authenticated-orcid":false,"given":"Luc\u00eda","family":"Marrero-Ponce","sequence":"additional","affiliation":[{"name":"Unit of Veterinary Histology and Pathology, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria (ULPGC), 35413 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2365-351X","authenticated-orcid":false,"given":"\u00d3scar","family":"Quesada-Canales","sequence":"additional","affiliation":[{"name":"Unit of Veterinary Histology and Pathology, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria (ULPGC), 35413 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7562-756X","authenticated-orcid":false,"given":"Ana","family":"Colom-Rivero","sequence":"additional","affiliation":[{"name":"Unit of Veterinary Histology and Pathology, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria (ULPGC), 35413 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0770-189X","authenticated-orcid":false,"given":"Rom\u00e1n","family":"Pino-Vera","sequence":"additional","affiliation":[{"name":"Departamento de Obstetricia y Ginecolog\u00eda, Pediatr\u00eda, Medicina Preventiva y Salud P\u00fablica, Toxicolog\u00eda, Medicina Legal y Forense y Parasitolog\u00eda, Universidad de La Laguna, Av. Astrof\u00edsico F. S\u00e1nchez, sn, 38203 La Laguna, Canary Islands, Spain"},{"name":"Instituto Universitario de Enfermedades Tropicales y Salud P\u00fablica de Canarias, Universidad de La Laguna, Av. Astrof\u00edsico F. S\u00e1nchez, sn, 38203 La Laguna, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Miguel A.","family":"Cabrera-P\u00e9rez","sequence":"additional","affiliation":[{"name":"Servicio de Biodiversidad, Direcci\u00f3n General de Lucha Contra el Cambio Clim\u00e1tico y Medio Ambiente, Gobierno de Canarias, Cl. Profesor Agust\u00edn Millares Carl\u00f3, 18. 5\u00aa Planta, Edificio Servicios M\u00faltiples II, 35071 Las Palmas, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1132-3772","authenticated-orcid":false,"given":"Jordi","family":"Miquel","sequence":"additional","affiliation":[{"name":"Departamento de Obstetricia y Ginecolog\u00eda, Pediatr\u00eda, Medicina Preventiva y Salud P\u00fablica, Toxicolog\u00eda, Medicina Legal y Forense y Parasitolog\u00eda, Universidad de La Laguna, Av. Astrof\u00edsico F. S\u00e1nchez, sn, 38203 La Laguna, Canary Islands, Spain"},{"name":"Instituto Universitario de Enfermedades Tropicales y Salud P\u00fablica de Canarias, Universidad de La Laguna, Av. Astrof\u00edsico F. S\u00e1nchez, sn, 38203 La Laguna, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-5670-4862","authenticated-orcid":false,"given":"Ayose","family":"Meli\u00e1n-Meli\u00e1n","sequence":"additional","affiliation":[{"name":"Gesti\u00f3n y Planeamiento Territorial y Medioambiental, S.A. (GESPLAN), Canary Islands Government, C\/Le\u00f3n y Castillo 54, Bajo, 35003 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9526-5113","authenticated-orcid":false,"given":"Pilar","family":"Foronda","sequence":"additional","affiliation":[{"name":"Departamento de Obstetricia y Ginecolog\u00eda, Pediatr\u00eda, Medicina Preventiva y Salud P\u00fablica, Toxicolog\u00eda, Medicina Legal y Forense y Parasitolog\u00eda, Universidad de La Laguna, Av. Astrof\u00edsico F. S\u00e1nchez, sn, 38203 La Laguna, Canary Islands, Spain"},{"name":"Instituto Universitario de Enfermedades Tropicales y Salud P\u00fablica de Canarias, Universidad de La Laguna, Av. Astrof\u00edsico F. S\u00e1nchez, sn, 38203 La Laguna, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-5414-1261","authenticated-orcid":false,"given":"Candela","family":"Rivero-Herrera","sequence":"additional","affiliation":[{"name":"Unit of Veterinary Histology and Pathology, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria (ULPGC), 35413 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-7954-3697","authenticated-orcid":false,"given":"Luc\u00eda","family":"Caballero-Hern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Unit of Veterinary Histology and Pathology, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria (ULPGC), 35413 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5425-2164","authenticated-orcid":false,"given":"Alicia","family":"Vel\u00e1zquez-Wallraf","sequence":"additional","affiliation":[{"name":"Unit of Veterinary Histology and Pathology, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria (ULPGC), 35413 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5281-0521","authenticated-orcid":false,"given":"Antonio","family":"Fernandez","sequence":"additional","affiliation":[{"name":"Unit of Veterinary Histology and Pathology, University Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria (ULPGC), 35413 Las Palmas de Gran Canaria, Canary Islands, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3614","DOI":"10.33265\/polar.v39.5242","article-title":"Morphological measurements of Atlantic puffin (Fratercula arctica naumanni) in High-Arctic Greenland","volume":"39","author":"Burnham","year":"2020","journal-title":"Polar Res."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"451","DOI":"10.1080\/00063657.2018.1524452","article-title":"Fit is fat: Winter body mass of Atlantic Puffins Fratercula arctica","volume":"65","author":"Jensen","year":"2018","journal-title":"Bird Study"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1080\/00063657209476343","article-title":"Measurements of Puffins as criteria of sex and age","volume":"19","author":"Corkhill","year":"1972","journal-title":"Bird Study"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1","DOI":"10.3354\/meps09813","article-title":"Long-term decline in egg size of Atlantic puffins Fratercula arctica is related to changes in forage fish stocks and climate conditions","volume":"457","author":"Barrett","year":"2012","journal-title":"Mar. 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