Evidence of killer whale predation on a yearling bowhead whale in Cumberland Sound, Nunavut

Accounts of killer whale (Orcinus orca) predation on marine mammals in the Canadian Arctic are relatively uncommon. Although second-hand reports of killer whale predation events in the Arctic are more common in recent years, these observations are generally poorly documented and the outcome of attac...
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Autor*in:	Brent G. Young [verfasserIn] Sarah M.E. Fortune [verfasserIn] William R. Koski [verfasserIn] Stephen A. Raverty [verfasserIn] Ricky Kilabuk [verfasserIn] Steven H. Ferguson [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch ; Französisch

Erschienen:	2020

Schlagwörter:	balaena mysticetus orcinus orca predation arctic nunavut

Übergeordnetes Werk:	In: Arctic Science - Canadian Science Publishing, 2021, 6(2020), 1, Seite 53-61
Übergeordnetes Werk:	volume:6 ; year:2020 ; number:1 ; pages:53-61

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1139/as-2019-0014

Katalog-ID:	DOAJ069236585

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language	English French
source	In Arctic Science 6(2020), 1, Seite 53-61 volume:6 year:2020 number:1 pages:53-61
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topic_facet	balaena mysticetus orcinus orca predation arctic nunavut Environmental sciences Environmental engineering
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container_title	Arctic Science
authorswithroles_txt_mv	Brent G. Young @@aut@@ Sarah M.E. Fortune @@aut@@ William R. Koski @@aut@@ Stephen A. Raverty @@aut@@ Ricky Kilabuk @@aut@@ Steven H. Ferguson @@aut@@
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callnumber-first	G - Geography, Anthropology, Recreation
author	Brent G. Young
spellingShingle	Brent G. Young misc GE1-350 misc TA170-171 misc balaena mysticetus misc orcinus orca misc predation misc arctic misc nunavut misc Environmental sciences misc Environmental engineering Evidence of killer whale predation on a yearling bowhead whale in Cumberland Sound, Nunavut
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topic_title	GE1-350 TA170-171 Evidence of killer whale predation on a yearling bowhead whale in Cumberland Sound, Nunavut balaena mysticetus orcinus orca predation arctic nunavut
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title	Evidence of killer whale predation on a yearling bowhead whale in Cumberland Sound, Nunavut
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title_full	Evidence of killer whale predation on a yearling bowhead whale in Cumberland Sound, Nunavut
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title_sort	evidence of killer whale predation on a yearling bowhead whale in cumberland sound, nunavut
callnumber	GE1-350
title_auth	Evidence of killer whale predation on a yearling bowhead whale in Cumberland Sound, Nunavut
abstract	Accounts of killer whale (Orcinus orca) predation on marine mammals in the Canadian Arctic are relatively uncommon. Although second-hand reports of killer whale predation events in the Arctic are more common in recent years, these observations are generally poorly documented and the outcome of attacks are often unknown. On 12 August 2016, a floating bowhead whale (Balaena mysticetus) carcass was found off-shore in Cumberland Sound, Nunavut — presumably predated by killer whales that were sighted in the area. Inspection of the carcass revealed injuries consistent with published accounts of killer whale predation on large whales and observations of killer whale predation on bowheads described in Inuit traditional knowledge. The bowhead was male, 6.1 m long in good nutritional condition and estimated between 14 and 16 months old. As a recently weaned yearling, this whale would have been highly vulnerable to killer whale predation. With decreasing summer sea ice making some areas of the Arctic more accessible, the incursion and presence of killer whales in the Arctic is expected to increase. A better understanding of Arctic killer whale predation pressure is needed to predict the potential impact they will have on the eastern Canada–west Greenland bowhead population as well as on other marine mammal prey.
abstractGer	Accounts of killer whale (Orcinus orca) predation on marine mammals in the Canadian Arctic are relatively uncommon. Although second-hand reports of killer whale predation events in the Arctic are more common in recent years, these observations are generally poorly documented and the outcome of attacks are often unknown. On 12 August 2016, a floating bowhead whale (Balaena mysticetus) carcass was found off-shore in Cumberland Sound, Nunavut — presumably predated by killer whales that were sighted in the area. Inspection of the carcass revealed injuries consistent with published accounts of killer whale predation on large whales and observations of killer whale predation on bowheads described in Inuit traditional knowledge. The bowhead was male, 6.1 m long in good nutritional condition and estimated between 14 and 16 months old. As a recently weaned yearling, this whale would have been highly vulnerable to killer whale predation. With decreasing summer sea ice making some areas of the Arctic more accessible, the incursion and presence of killer whales in the Arctic is expected to increase. A better understanding of Arctic killer whale predation pressure is needed to predict the potential impact they will have on the eastern Canada–west Greenland bowhead population as well as on other marine mammal prey.
abstract_unstemmed	Accounts of killer whale (Orcinus orca) predation on marine mammals in the Canadian Arctic are relatively uncommon. Although second-hand reports of killer whale predation events in the Arctic are more common in recent years, these observations are generally poorly documented and the outcome of attacks are often unknown. On 12 August 2016, a floating bowhead whale (Balaena mysticetus) carcass was found off-shore in Cumberland Sound, Nunavut — presumably predated by killer whales that were sighted in the area. Inspection of the carcass revealed injuries consistent with published accounts of killer whale predation on large whales and observations of killer whale predation on bowheads described in Inuit traditional knowledge. The bowhead was male, 6.1 m long in good nutritional condition and estimated between 14 and 16 months old. As a recently weaned yearling, this whale would have been highly vulnerable to killer whale predation. With decreasing summer sea ice making some areas of the Arctic more accessible, the incursion and presence of killer whales in the Arctic is expected to increase. A better understanding of Arctic killer whale predation pressure is needed to predict the potential impact they will have on the eastern Canada–west Greenland bowhead population as well as on other marine mammal prey.
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title_short	Evidence of killer whale predation on a yearling bowhead whale in Cumberland Sound, Nunavut
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Evidence of killer whale predation on a yearling bowhead whale in Cumberland Sound, Nunavut

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