Insights into the Trophic Ecology of Bottlenose Dolphins (Tursiops truncatus) in Irish Waters
The stomach contents of 12 bottlenose dolphins were examined. Ten of the 11 samples originated from dolphins that stranded on the west coast of Ireland between 1999 and 2011, while the remaining dolphin was bycaught. Ten of the stomachs contained food remains, mainly fish bones and otoliths; two sto...
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Online Access: | http://hdl.handle.net/10508/10036 https://doi.org/10.1578/AM.41.2.2015.226 |
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ftieo:oai:repositorio.ieo.es:10508/10036 2023-05-15T17:34:04+02:00 Insights into the Trophic Ecology of Bottlenose Dolphins (Tursiops truncatus) in Irish Waters Hernández-Milián, G. (Gema) Berrow, S. (Simon) Santos, M.B. (María Begoña) Reid, D.G. (David G.) Rogan, E. (Emer) Atlantic Ocean North Atlantic Northeast Atlantic Irish Sea http://hdl.handle.net/10508/10036 https://doi.org/10.1578/AM.41.2.2015.226 eng eng Centro Oceanográfico de Vigo 0167-5427 http://hdl.handle.net/10508/10036 Aquatic Mammals, 41(2). 2015: 226-239 doi:10.1578/AM.41.2.2015.226 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess CC-BY-NC-ND Bones Bottlenose dolphins Tursiops truncatus Coastal Offshore Annual consumption Feeding ecology Gadoids article ftieo https://doi.org/10.1578/AM.41.2.2015.226 2022-07-26T23:48:52Z The stomach contents of 12 bottlenose dolphins were examined. Ten of the 11 samples originated from dolphins that stranded on the west coast of Ireland between 1999 and 2011, while the remaining dolphin was bycaught. Ten of the stomachs contained food remains, mainly fish bones and otoliths; two stomachs were empty. A total of 37 prey taxa were identified, suggesting that they have a broad diet. The main prey items identified were five gadoid fish. Also, four species were only identified from nonotolith skeletal material, highlighting the importance of including all skeletal material in dietary studies. Three distinct populations of bottlenose dolphins have been identified in Irish waters using genetic markers. Differences in diet were found among these populations, where their stomach contents suggest that these animals might be foraging in different habitats. Significant differences were found between dolphins stranded alive and those that were found dead where the former appeared to have been feeding more on pelagic species. Significant differences were also found between male and female dolphin diet: males had eaten a wider variety of prey items than females. Annual consumption rates for the coastal bottlenose dolphin population in Irish Atlantic coastal waters are estimated to be around 1,193.8 tonnes. Versión del editor 0,0000 Article in Journal/Newspaper North Atlantic Northeast Atlantic Instituto Español de Oceanografía: e-IEO Aquatic Mammals 41 2 226 239 |
institution |
Open Polar |
collection |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
topic |
Bones Bottlenose dolphins Tursiops truncatus Coastal Offshore Annual consumption Feeding ecology Gadoids |
spellingShingle |
Bones Bottlenose dolphins Tursiops truncatus Coastal Offshore Annual consumption Feeding ecology Gadoids Hernández-Milián, G. (Gema) Berrow, S. (Simon) Santos, M.B. (María Begoña) Reid, D.G. (David G.) Rogan, E. (Emer) Insights into the Trophic Ecology of Bottlenose Dolphins (Tursiops truncatus) in Irish Waters |
topic_facet |
Bones Bottlenose dolphins Tursiops truncatus Coastal Offshore Annual consumption Feeding ecology Gadoids |
description |
The stomach contents of 12 bottlenose dolphins were examined. Ten of the 11 samples originated from dolphins that stranded on the west coast of Ireland between 1999 and 2011, while the remaining dolphin was bycaught. Ten of the stomachs contained food remains, mainly fish bones and otoliths; two stomachs were empty. A total of 37 prey taxa were identified, suggesting that they have a broad diet. The main prey items identified were five gadoid fish. Also, four species were only identified from nonotolith skeletal material, highlighting the importance of including all skeletal material in dietary studies. Three distinct populations of bottlenose dolphins have been identified in Irish waters using genetic markers. Differences in diet were found among these populations, where their stomach contents suggest that these animals might be foraging in different habitats. Significant differences were found between dolphins stranded alive and those that were found dead where the former appeared to have been feeding more on pelagic species. Significant differences were also found between male and female dolphin diet: males had eaten a wider variety of prey items than females. Annual consumption rates for the coastal bottlenose dolphin population in Irish Atlantic coastal waters are estimated to be around 1,193.8 tonnes. Versión del editor 0,0000 |
format |
Article in Journal/Newspaper |
author |
Hernández-Milián, G. (Gema) Berrow, S. (Simon) Santos, M.B. (María Begoña) Reid, D.G. (David G.) Rogan, E. (Emer) |
author_facet |
Hernández-Milián, G. (Gema) Berrow, S. (Simon) Santos, M.B. (María Begoña) Reid, D.G. (David G.) Rogan, E. (Emer) |
author_sort |
Hernández-Milián, G. (Gema) |
title |
Insights into the Trophic Ecology of Bottlenose Dolphins (Tursiops truncatus) in Irish Waters |
title_short |
Insights into the Trophic Ecology of Bottlenose Dolphins (Tursiops truncatus) in Irish Waters |
title_full |
Insights into the Trophic Ecology of Bottlenose Dolphins (Tursiops truncatus) in Irish Waters |
title_fullStr |
Insights into the Trophic Ecology of Bottlenose Dolphins (Tursiops truncatus) in Irish Waters |
title_full_unstemmed |
Insights into the Trophic Ecology of Bottlenose Dolphins (Tursiops truncatus) in Irish Waters |
title_sort |
insights into the trophic ecology of bottlenose dolphins (tursiops truncatus) in irish waters |
publisher |
Centro Oceanográfico de Vigo |
url |
http://hdl.handle.net/10508/10036 https://doi.org/10.1578/AM.41.2.2015.226 |
op_coverage |
Atlantic Ocean North Atlantic Northeast Atlantic Irish Sea |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_relation |
0167-5427 http://hdl.handle.net/10508/10036 Aquatic Mammals, 41(2). 2015: 226-239 doi:10.1578/AM.41.2.2015.226 |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1578/AM.41.2.2015.226 |
container_title |
Aquatic Mammals |
container_volume |
41 |
container_issue |
2 |
container_start_page |
226 |
op_container_end_page |
239 |
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1766132761490358272 |