Disentangling the main causes and potential origin of an unusual razorbill (Alca torda) die-off in the Mediterranean Sea: an interdisciplinary approach
An unprecedented wreck of razorbills (Alca torda) occurred along the Mediterranean Sea during winter 2022-2023. To determine the potential causes of death and origin of these birds, 46 dead razorbills collected on the coast of Malaga (Spain) were analysed. Necropsies revealed poor body 0condition an...
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ftuabarcelonapb:oai:ddd.uab.cat:284507 2024-04-21T07:44:19+00:00 Disentangling the main causes and potential origin of an unusual razorbill (Alca torda) die-off in the Mediterranean Sea: an interdisciplinary approach Loring Salmerón, Àngela Universitat Autònoma de Barcelona. Facultat de Biociències Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia Navarro, Joan, Soler, Anna 2023 application/pdf https://ddd.uab.cat/record/284507 eng eng https://ddd.uab.cat/record/284507 urn:oai:ddd.uab.cat:284507 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-sa/4.0/ Contracaecum Migration Origin Razorbill Stable isotopes Starvation Ulcers Wreck Treball de fi de postgrau 2023 ftuabarcelonapb 2024-03-26T09:31:10Z An unprecedented wreck of razorbills (Alca torda) occurred along the Mediterranean Sea during winter 2022-2023. To determine the potential causes of death and origin of these birds, 46 dead razorbills collected on the coast of Malaga (Spain) were analysed. Necropsies revealed poor body 0condition and starvation signs in most birds. Influenza virus was excluded through PCR testing. However, a high prevalence (58%) of gastrointestinal nematodes was found, primarily Contracaecum variegatum, associated with oesophageal and proventricular ulcers in 60% of razorbills. Stable isotope analysis of feathers showed that most of the birds likely were from North Sea colonies, although 33% of the individuals presumably were from other breeding locations. Persistent Atlantic storms likely triggered this wreck by impeding foraging and forcing migration of weakened razorbills. Although starvation induced by harsh weather seemed to be the primary cause of mortality, the high parasite loads and associated digestive ulcers found in most razorbills may have acted synergistically to further weaken these already emaciated birds. The interplay of these factors offers a better understanding of the multifaceted drivers of mass seabird wreck events. Other/Unknown Material Alca torda Razorbill Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
topic |
Contracaecum Migration Origin Razorbill Stable isotopes Starvation Ulcers Wreck |
spellingShingle |
Contracaecum Migration Origin Razorbill Stable isotopes Starvation Ulcers Wreck Loring Salmerón, Àngela Universitat Autònoma de Barcelona. Facultat de Biociències Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia Disentangling the main causes and potential origin of an unusual razorbill (Alca torda) die-off in the Mediterranean Sea: an interdisciplinary approach |
topic_facet |
Contracaecum Migration Origin Razorbill Stable isotopes Starvation Ulcers Wreck |
description |
An unprecedented wreck of razorbills (Alca torda) occurred along the Mediterranean Sea during winter 2022-2023. To determine the potential causes of death and origin of these birds, 46 dead razorbills collected on the coast of Malaga (Spain) were analysed. Necropsies revealed poor body 0condition and starvation signs in most birds. Influenza virus was excluded through PCR testing. However, a high prevalence (58%) of gastrointestinal nematodes was found, primarily Contracaecum variegatum, associated with oesophageal and proventricular ulcers in 60% of razorbills. Stable isotope analysis of feathers showed that most of the birds likely were from North Sea colonies, although 33% of the individuals presumably were from other breeding locations. Persistent Atlantic storms likely triggered this wreck by impeding foraging and forcing migration of weakened razorbills. Although starvation induced by harsh weather seemed to be the primary cause of mortality, the high parasite loads and associated digestive ulcers found in most razorbills may have acted synergistically to further weaken these already emaciated birds. The interplay of these factors offers a better understanding of the multifaceted drivers of mass seabird wreck events. |
author2 |
Navarro, Joan, Soler, Anna |
format |
Other/Unknown Material |
author |
Loring Salmerón, Àngela Universitat Autònoma de Barcelona. Facultat de Biociències Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia |
author_facet |
Loring Salmerón, Àngela Universitat Autònoma de Barcelona. Facultat de Biociències Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia |
author_sort |
Loring Salmerón, Àngela |
title |
Disentangling the main causes and potential origin of an unusual razorbill (Alca torda) die-off in the Mediterranean Sea: an interdisciplinary approach |
title_short |
Disentangling the main causes and potential origin of an unusual razorbill (Alca torda) die-off in the Mediterranean Sea: an interdisciplinary approach |
title_full |
Disentangling the main causes and potential origin of an unusual razorbill (Alca torda) die-off in the Mediterranean Sea: an interdisciplinary approach |
title_fullStr |
Disentangling the main causes and potential origin of an unusual razorbill (Alca torda) die-off in the Mediterranean Sea: an interdisciplinary approach |
title_full_unstemmed |
Disentangling the main causes and potential origin of an unusual razorbill (Alca torda) die-off in the Mediterranean Sea: an interdisciplinary approach |
title_sort |
disentangling the main causes and potential origin of an unusual razorbill (alca torda) die-off in the mediterranean sea: an interdisciplinary approach |
publishDate |
2023 |
url |
https://ddd.uab.cat/record/284507 |
genre |
Alca torda Razorbill |
genre_facet |
Alca torda Razorbill |
op_relation |
https://ddd.uab.cat/record/284507 urn:oai:ddd.uab.cat:284507 |
op_rights |
open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-sa/4.0/ |
_version_ |
1796935314984402944 |