Killer whales ( Orcinus orca) feeding on lumpfish ( Cyclopterus lumpus) in northern Norway
Abstract Killer whales ( Orcinus orca ) in Norwegian waters have long been known to rely on Atlantic herring ( Clupea harengus ) as a main prey resource. However, research almost exclusively conducted at seasonal herring grounds may have biased studies away from detecting other potentially significa...
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crwiley:10.1111/mms.12618 2024-05-19T07:43:26+00:00 Killer whales ( Orcinus orca) feeding on lumpfish ( Cyclopterus lumpus) in northern Norway Jourdain, Eve Karoliussen, Richard de Vos, Jacques Zakharov, Stanislav E. Tougard, Christelle SeaWorld and Busch Gardens Conservation Fund SeaWorld Parks and Entertanment 2019 http://dx.doi.org/10.1111/mms.12618 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12618 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mms.12618 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Mammal Science volume 36, issue 1, page 89-102 ISSN 0824-0469 1748-7692 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2019 crwiley https://doi.org/10.1111/mms.12618 2024-04-22T07:34:44Z Abstract Killer whales ( Orcinus orca ) in Norwegian waters have long been known to rely on Atlantic herring ( Clupea harengus ) as a main prey resource. However, research almost exclusively conducted at seasonal herring grounds may have biased studies away from detecting other potentially significant prey species. Since 2013, dedicated research efforts have focused on monitoring killer whale occurrence and foraging ecology throughout the year in northern Norway. This study presents results on site‐fidelity of photographically identified individuals, predation records and behavioral patterns from five spring seasons (March–April) in 2014–2018 in Andfjord, northern Norway. A minimum number of 75 adult and subadult killer whales (out of a catalog of 971 individuals) returned seasonally to the study area for foraging and residency for up to six weeks. Lumpfish (or lumpsucker, Cyclopterus lumpus ) was the only type of prey identified (based on molecular or visual identification) on 22 predation events from 2016 ( n = 4), 2017 ( n = 2) and 2018 ( n = 16). Spatial group cohesion observed when foraging was a potential adaptation for efficiently hunting this prey species. These whales were also encountered at herring wintering grounds the same years, but with different group sizes. Such behavioral adaptations suggested intraannual switching between prey resources and foraging strategies. Article in Journal/Newspaper Killer Whale Northern Norway Orca Orcinus orca Killer whale Wiley Online Library Marine Mammal Science 36 1 89 102 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
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Aquatic Science Ecology, Evolution, Behavior and Systematics Jourdain, Eve Karoliussen, Richard de Vos, Jacques Zakharov, Stanislav E. Tougard, Christelle Killer whales ( Orcinus orca) feeding on lumpfish ( Cyclopterus lumpus) in northern Norway |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Killer whales ( Orcinus orca ) in Norwegian waters have long been known to rely on Atlantic herring ( Clupea harengus ) as a main prey resource. However, research almost exclusively conducted at seasonal herring grounds may have biased studies away from detecting other potentially significant prey species. Since 2013, dedicated research efforts have focused on monitoring killer whale occurrence and foraging ecology throughout the year in northern Norway. This study presents results on site‐fidelity of photographically identified individuals, predation records and behavioral patterns from five spring seasons (March–April) in 2014–2018 in Andfjord, northern Norway. A minimum number of 75 adult and subadult killer whales (out of a catalog of 971 individuals) returned seasonally to the study area for foraging and residency for up to six weeks. Lumpfish (or lumpsucker, Cyclopterus lumpus ) was the only type of prey identified (based on molecular or visual identification) on 22 predation events from 2016 ( n = 4), 2017 ( n = 2) and 2018 ( n = 16). Spatial group cohesion observed when foraging was a potential adaptation for efficiently hunting this prey species. These whales were also encountered at herring wintering grounds the same years, but with different group sizes. Such behavioral adaptations suggested intraannual switching between prey resources and foraging strategies. |
author2 |
SeaWorld and Busch Gardens Conservation Fund SeaWorld Parks and Entertanment |
format |
Article in Journal/Newspaper |
author |
Jourdain, Eve Karoliussen, Richard de Vos, Jacques Zakharov, Stanislav E. Tougard, Christelle |
author_facet |
Jourdain, Eve Karoliussen, Richard de Vos, Jacques Zakharov, Stanislav E. Tougard, Christelle |
author_sort |
Jourdain, Eve |
title |
Killer whales ( Orcinus orca) feeding on lumpfish ( Cyclopterus lumpus) in northern Norway |
title_short |
Killer whales ( Orcinus orca) feeding on lumpfish ( Cyclopterus lumpus) in northern Norway |
title_full |
Killer whales ( Orcinus orca) feeding on lumpfish ( Cyclopterus lumpus) in northern Norway |
title_fullStr |
Killer whales ( Orcinus orca) feeding on lumpfish ( Cyclopterus lumpus) in northern Norway |
title_full_unstemmed |
Killer whales ( Orcinus orca) feeding on lumpfish ( Cyclopterus lumpus) in northern Norway |
title_sort |
killer whales ( orcinus orca) feeding on lumpfish ( cyclopterus lumpus) in northern norway |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/mms.12618 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12618 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/mms.12618 |
genre |
Killer Whale Northern Norway Orca Orcinus orca Killer whale |
genre_facet |
Killer Whale Northern Norway Orca Orcinus orca Killer whale |
op_source |
Marine Mammal Science volume 36, issue 1, page 89-102 ISSN 0824-0469 1748-7692 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/mms.12618 |
container_title |
Marine Mammal Science |
container_volume |
36 |
container_issue |
1 |
container_start_page |
89 |
op_container_end_page |
102 |
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1799483160170332160 |