Diet of the Monk Seal (Monachus monachus) in Greek Waters

Stomach contents were collected from 27 monk seal carcasses between 1997 and 2008 from different areas along the Greek coast. This sample included nine animals that had been deliberately killed and five accidental deaths due to fisheries interactions. Stomachs from monk seals of both sexes, includin...

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Autores: Pierce, Graham J., Hernández-Milián, Gema, Santos, María Begoña, Dendrinos, P., Psaradelli, M., Tounta, E., Androukaki, E., Edridge, A.
Tipo de documento: artigo
Data de publicação:2011
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/329001
Acesso em linha:http://hdl.handle.net/10261/329001
Access Level:Acceso aberto
Palavra-chave:Pesquerías
Centro Oceanográfico de Vigo
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spelling Diet of the Monk Seal (Monachus monachus) in Greek WatersPierce, Graham J.Hernández-Milián, GemaSantos, María BegoñaDendrinos, P.Psaradelli, M.Tounta, E.Androukaki, E.Edridge, A.PesqueríasCentro Oceanográfico de VigoStomach contents were collected from 27 monk seal carcasses between 1997 and 2008 from different areas along the Greek coast. This sample included nine animals that had been deliberately killed and five accidental deaths due to fisheries interactions. Stomachs from monk seals of both sexes, including adults and subadults, were analysed. A total of 530 prey items from at least 71 prey species was identified, with approximately 74% of prey identified at least to genus, while 2.8% could be identified only to class level (i.e., fish or cephalopods). We found 266 cephalopods (50%), 253 fish (48%), a few non-cephalopod molluscs (1.5%), and two crustaceans (0.4%). Faecal samples were also collected but contained no identifiable prey remains. Octopuses were the most important prey in terms of numbers eaten and contribution to reconstructed prey biomass. The common octopus (Octopus vulgaris) (33.9% of prey by number) was around three times as numerous in the diet as the lesser octopus (Eledone cirrhosa) (11.1%). Fish of the families Sparidae (28.1%) and, to a lesser extent, Scorpaenidae (2.3%), Congridae (2.5%), and Atherinidae (2.5%) were also frequent in the stomachs. Many of the prey species recorded are of commercial fishery importance. Exploratory multivariate analysis (redundancy analysis [RDA]) indicated weakly significant seasonal, spatial, and interannual variation in diet and also suggested a relationship between diet composition and cause of death. No trends in diet related to sex or age class were identified. Sparids occurred more frequently in animals that had been deliberately killed than those that had died due to other causes, highlighting the interactions taking place between monk seals and fishing activities.Sí202320232011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/329001reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Vigoinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3290012026-05-22T06:33:51Z
dc.title.none.fl_str_mv Diet of the Monk Seal (Monachus monachus) in Greek Waters
title Diet of the Monk Seal (Monachus monachus) in Greek Waters
spellingShingle Diet of the Monk Seal (Monachus monachus) in Greek Waters
Pierce, Graham J.
Pesquerías
Centro Oceanográfico de Vigo
title_short Diet of the Monk Seal (Monachus monachus) in Greek Waters
title_full Diet of the Monk Seal (Monachus monachus) in Greek Waters
title_fullStr Diet of the Monk Seal (Monachus monachus) in Greek Waters
title_full_unstemmed Diet of the Monk Seal (Monachus monachus) in Greek Waters
title_sort Diet of the Monk Seal (Monachus monachus) in Greek Waters
dc.creator.none.fl_str_mv Pierce, Graham J.
Hernández-Milián, Gema
Santos, María Begoña
Dendrinos, P.
Psaradelli, M.
Tounta, E.
Androukaki, E.
Edridge, A.
author Pierce, Graham J.
author_facet Pierce, Graham J.
Hernández-Milián, Gema
Santos, María Begoña
Dendrinos, P.
Psaradelli, M.
Tounta, E.
Androukaki, E.
Edridge, A.
author_role author
author2 Hernández-Milián, Gema
Santos, María Begoña
Dendrinos, P.
Psaradelli, M.
Tounta, E.
Androukaki, E.
Edridge, A.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Pesquerías
Centro Oceanográfico de Vigo
topic Pesquerías
Centro Oceanográfico de Vigo
description Stomach contents were collected from 27 monk seal carcasses between 1997 and 2008 from different areas along the Greek coast. This sample included nine animals that had been deliberately killed and five accidental deaths due to fisheries interactions. Stomachs from monk seals of both sexes, including adults and subadults, were analysed. A total of 530 prey items from at least 71 prey species was identified, with approximately 74% of prey identified at least to genus, while 2.8% could be identified only to class level (i.e., fish or cephalopods). We found 266 cephalopods (50%), 253 fish (48%), a few non-cephalopod molluscs (1.5%), and two crustaceans (0.4%). Faecal samples were also collected but contained no identifiable prey remains. Octopuses were the most important prey in terms of numbers eaten and contribution to reconstructed prey biomass. The common octopus (Octopus vulgaris) (33.9% of prey by number) was around three times as numerous in the diet as the lesser octopus (Eledone cirrhosa) (11.1%). Fish of the families Sparidae (28.1%) and, to a lesser extent, Scorpaenidae (2.3%), Congridae (2.5%), and Atherinidae (2.5%) were also frequent in the stomachs. Many of the prey species recorded are of commercial fishery importance. Exploratory multivariate analysis (redundancy analysis [RDA]) indicated weakly significant seasonal, spatial, and interannual variation in diet and also suggested a relationship between diet composition and cause of death. No trends in diet related to sex or age class were identified. Sparids occurred more frequently in animals that had been deliberately killed than those that had died due to other causes, highlighting the interactions taking place between monk seals and fishing activities.
publishDate 2011
dc.date.none.fl_str_mv 2011
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/329001
url http://hdl.handle.net/10261/329001
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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