Whale and dolphin behavioural responses to dead conspecifics
The scientific study of death across animal taxa—comparative thanatology—investigates how animals respond behaviourally, physiologically and psychologically to dead conspecifics, and the processes behind such responses. Several species of cetaceans have been long known to care for, attend to, be aro...
Published in: | Zoology |
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Format: | Article in Journal/Newspaper |
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2018
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Online Access: | https://research-portal.st-andrews.ac.uk/en/publications/32e7c45e-4773-4446-8766-9a47a864fb41 https://doi.org/10.1016/j.zool.2018.05.003 https://research-repository.st-andrews.ac.uk/bitstream/10023/17672/1/Bearzi_et_al_author_accepted_manuscript.pdf https://www.sciencedirect.com/science/article/pii/S0944200618300473 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/32e7c45e-4773-4446-8766-9a47a864fb41 2024-10-06T13:47:33+00:00 Whale and dolphin behavioural responses to dead conspecifics Bearzi, Giovanni Kerem, Dan Furey, Nathan B. Pitman, Robert L. Rendell, Luke Edward Reeves, Randall R. 2018-06 application/pdf https://research-portal.st-andrews.ac.uk/en/publications/32e7c45e-4773-4446-8766-9a47a864fb41 https://doi.org/10.1016/j.zool.2018.05.003 https://research-repository.st-andrews.ac.uk/bitstream/10023/17672/1/Bearzi_et_al_author_accepted_manuscript.pdf https://www.sciencedirect.com/science/article/pii/S0944200618300473 eng eng https://research-portal.st-andrews.ac.uk/en/publications/32e7c45e-4773-4446-8766-9a47a864fb41 info:eu-repo/semantics/openAccess Bearzi , G , Kerem , D , Furey , N B , Pitman , R L , Rendell , L E & Reeves , R R 2018 , ' Whale and dolphin behavioural responses to dead conspecifics ' , Zoology , vol. 128 , pp. 1-15 . https://doi.org/10.1016/j.zool.2018.05.003 Cetaceans Epimeletic behaviour Caregiving behaviour Comparative thanatology Grieving article 2018 ftunstandrewcris https://doi.org/10.1016/j.zool.2018.05.003 2024-09-11T23:41:06Z The scientific study of death across animal taxa—comparative thanatology—investigates how animals respond behaviourally, physiologically and psychologically to dead conspecifics, and the processes behind such responses. Several species of cetaceans have been long known to care for, attend to, be aroused by, or show interest in dead or dying individuals. We investigated patterns and variation in cetacean responses to dead conspecifics across cetacean taxa based on a comprehensive literature review. We analysed 78 records reported between 1970 and 2016, involving 20 of the 88 extant cetacean species. We adopted a weighted comparative approach to take observation effort into account and found that odontocetes (toothed cetaceans) were much more likely than mysticetes (baleen whales) to attend to dead conspecifics. Dolphins (Delphinidae) had the greatest occurrence of attentive behaviour (92.3% of all records, with a weighed attendance index 18 times greater than the average of all other cetacean families). Two dolphin genera, Sousa and Tursiops, constituted 55.1% of all cetacean records (N = 43) and showed the highest incidence of attentive behaviour. Results of analyses intended to investigate the reasons behind these differences suggested that encephalisation may be an important predictor, consistent with the "social brain" hypothesis. Among attending individuals or groups of known sex (N = 28), the majority (75.0%) were adult females with dead calves or juveniles (possibly their own offspring, with exceptions), consistent with the strong mother-calf bond, or, in a few cases, with the bond between mothers and other females in the group. The remaining records (25.0%) involved males either showing sexual interest in a dead adult or subadult, or carrying a dead calf in the presence of females. Because an inanimate individual is potentially rescuable, responses to dead conspecifics—especially by females—can be explained at least in part by attempts to revive and protect, having a clear adaptive value. In some cases ... Article in Journal/Newspaper baleen whales University of St Andrews: Research Portal Zoology 128 1 15 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Cetaceans Epimeletic behaviour Caregiving behaviour Comparative thanatology Grieving |
spellingShingle |
Cetaceans Epimeletic behaviour Caregiving behaviour Comparative thanatology Grieving Bearzi, Giovanni Kerem, Dan Furey, Nathan B. Pitman, Robert L. Rendell, Luke Edward Reeves, Randall R. Whale and dolphin behavioural responses to dead conspecifics |
topic_facet |
Cetaceans Epimeletic behaviour Caregiving behaviour Comparative thanatology Grieving |
description |
The scientific study of death across animal taxa—comparative thanatology—investigates how animals respond behaviourally, physiologically and psychologically to dead conspecifics, and the processes behind such responses. Several species of cetaceans have been long known to care for, attend to, be aroused by, or show interest in dead or dying individuals. We investigated patterns and variation in cetacean responses to dead conspecifics across cetacean taxa based on a comprehensive literature review. We analysed 78 records reported between 1970 and 2016, involving 20 of the 88 extant cetacean species. We adopted a weighted comparative approach to take observation effort into account and found that odontocetes (toothed cetaceans) were much more likely than mysticetes (baleen whales) to attend to dead conspecifics. Dolphins (Delphinidae) had the greatest occurrence of attentive behaviour (92.3% of all records, with a weighed attendance index 18 times greater than the average of all other cetacean families). Two dolphin genera, Sousa and Tursiops, constituted 55.1% of all cetacean records (N = 43) and showed the highest incidence of attentive behaviour. Results of analyses intended to investigate the reasons behind these differences suggested that encephalisation may be an important predictor, consistent with the "social brain" hypothesis. Among attending individuals or groups of known sex (N = 28), the majority (75.0%) were adult females with dead calves or juveniles (possibly their own offspring, with exceptions), consistent with the strong mother-calf bond, or, in a few cases, with the bond between mothers and other females in the group. The remaining records (25.0%) involved males either showing sexual interest in a dead adult or subadult, or carrying a dead calf in the presence of females. Because an inanimate individual is potentially rescuable, responses to dead conspecifics—especially by females—can be explained at least in part by attempts to revive and protect, having a clear adaptive value. In some cases ... |
format |
Article in Journal/Newspaper |
author |
Bearzi, Giovanni Kerem, Dan Furey, Nathan B. Pitman, Robert L. Rendell, Luke Edward Reeves, Randall R. |
author_facet |
Bearzi, Giovanni Kerem, Dan Furey, Nathan B. Pitman, Robert L. Rendell, Luke Edward Reeves, Randall R. |
author_sort |
Bearzi, Giovanni |
title |
Whale and dolphin behavioural responses to dead conspecifics |
title_short |
Whale and dolphin behavioural responses to dead conspecifics |
title_full |
Whale and dolphin behavioural responses to dead conspecifics |
title_fullStr |
Whale and dolphin behavioural responses to dead conspecifics |
title_full_unstemmed |
Whale and dolphin behavioural responses to dead conspecifics |
title_sort |
whale and dolphin behavioural responses to dead conspecifics |
publishDate |
2018 |
url |
https://research-portal.st-andrews.ac.uk/en/publications/32e7c45e-4773-4446-8766-9a47a864fb41 https://doi.org/10.1016/j.zool.2018.05.003 https://research-repository.st-andrews.ac.uk/bitstream/10023/17672/1/Bearzi_et_al_author_accepted_manuscript.pdf https://www.sciencedirect.com/science/article/pii/S0944200618300473 |
genre |
baleen whales |
genre_facet |
baleen whales |
op_source |
Bearzi , G , Kerem , D , Furey , N B , Pitman , R L , Rendell , L E & Reeves , R R 2018 , ' Whale and dolphin behavioural responses to dead conspecifics ' , Zoology , vol. 128 , pp. 1-15 . https://doi.org/10.1016/j.zool.2018.05.003 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/publications/32e7c45e-4773-4446-8766-9a47a864fb41 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.zool.2018.05.003 |
container_title |
Zoology |
container_volume |
128 |
container_start_page |
1 |
op_container_end_page |
15 |
_version_ |
1812175740680011776 |