Killer whales (Orcinus orca) feeding on lumpfish (Cyclopterus lumpus) in northern Norway
International audience 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...
Published in: | Marine Mammal Science |
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Online Access: | https://hal.science/hal-02162319 https://hal.science/hal-02162319/document https://hal.science/hal-02162319/file/Jourdain_MarMamSc.pdf https://doi.org/10.1111/mms.12618 |
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ftecolephe:oai:HAL:hal-02162319v1 2024-05-19T07:43:26+00:00 Killer whales (Orcinus orca) feeding on lumpfish (Cyclopterus lumpus) in northern Norway Jourdain, Eve Karoliussen, Richard Vos, Jacques Zakharov, Stanislav Tougard, Christelle Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS) 2020 https://hal.science/hal-02162319 https://hal.science/hal-02162319/document https://hal.science/hal-02162319/file/Jourdain_MarMamSc.pdf https://doi.org/10.1111/mms.12618 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/mms.12618 hal-02162319 https://hal.science/hal-02162319 https://hal.science/hal-02162319/document https://hal.science/hal-02162319/file/Jourdain_MarMamSc.pdf doi:10.1111/mms.12618 info:eu-repo/semantics/OpenAccess ISSN: 0824-0469 EISSN: 1748-7692 Marine Mammal Science https://hal.science/hal-02162319 Marine Mammal Science, 2020, 36 (1), pp.89-102. ⟨10.1111/mms.12618⟩ seasonality site-fidelity Orcinus orca killer whale feeding behavior foraging foraging strategy [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2020 ftecolephe https://doi.org/10.1111/mms.12618 2024-05-02T00:20:10Z International audience 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 EPHE (Ecole pratique des hautes études, Paris): HAL Marine Mammal Science 36 1 89 102 |
institution |
Open Polar |
collection |
EPHE (Ecole pratique des hautes études, Paris): HAL |
op_collection_id |
ftecolephe |
language |
English |
topic |
seasonality site-fidelity Orcinus orca killer whale feeding behavior foraging foraging strategy [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
seasonality site-fidelity Orcinus orca killer whale feeding behavior foraging foraging strategy [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology Jourdain, Eve Karoliussen, Richard Vos, Jacques Zakharov, Stanislav Tougard, Christelle Killer whales (Orcinus orca) feeding on lumpfish (Cyclopterus lumpus) in northern Norway |
topic_facet |
seasonality site-fidelity Orcinus orca killer whale feeding behavior foraging foraging strategy [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience 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 |
Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Jourdain, Eve Karoliussen, Richard Vos, Jacques Zakharov, Stanislav Tougard, Christelle |
author_facet |
Jourdain, Eve Karoliussen, Richard Vos, Jacques Zakharov, Stanislav 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 |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02162319 https://hal.science/hal-02162319/document https://hal.science/hal-02162319/file/Jourdain_MarMamSc.pdf https://doi.org/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 |
ISSN: 0824-0469 EISSN: 1748-7692 Marine Mammal Science https://hal.science/hal-02162319 Marine Mammal Science, 2020, 36 (1), pp.89-102. ⟨10.1111/mms.12618⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/mms.12618 hal-02162319 https://hal.science/hal-02162319 https://hal.science/hal-02162319/document https://hal.science/hal-02162319/file/Jourdain_MarMamSc.pdf doi:10.1111/mms.12618 |
op_rights |
info:eu-repo/semantics/OpenAccess |
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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1799483154778554368 |