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Non-lunge feeding behaviour of humpback whales associated with fishing boats in Norway
Item metadata
dc.contributor.author | Iwata, Takashi | |
dc.contributor.author | Aoki, Kagari | |
dc.contributor.author | Miller, Patrick James | |
dc.contributor.author | Biuw, Martin | |
dc.contributor.author | Williamson, Michael | |
dc.contributor.author | Sato, Katsufumi | |
dc.date.accessioned | 2023-11-10T10:30:12Z | |
dc.date.available | 2023-11-10T10:30:12Z | |
dc.date.issued | 2024-02 | |
dc.identifier | 294617108 | |
dc.identifier | 2330e5de-c95f-4d89-9b34-d57f6e56839d | |
dc.identifier | 85176232052 | |
dc.identifier.citation | Iwata , T , Aoki , K , Miller , P J , Biuw , M , Williamson , M & Sato , K 2024 , ' Non-lunge feeding behaviour of humpback whales associated with fishing boats in Norway ' , Ethology , vol. 130 , no. 2 , 13419 . https://doi.org/10.1111/eth.13419 | en |
dc.identifier.issn | 0179-1613 | |
dc.identifier.uri | https://hdl.handle.net/10023/28663 | |
dc.description | Funding: Ichimura Foundation of New Technology Japan Society for the Promotion of Science Postdoctoral Fellowships Research Abroad Mitsui and Co. Environment Fund. | en |
dc.description.abstract | Top marine predators, such as odontocetes, pinnipeds, and seabirds, are known to forage around fishing boats as fishermen aggregate and/or discard their prey. Recently, incidents of humpback whales interacting with fishing boats have been reported. However, whether humpback whales utilise discard fish as a food source and how they forage around fishing boats is unknown. This study reports, for the first time, the foraging behaviour of a humpback whale around fishing boats. Three whales were tagged using a suction-cup tag containing a video camera, and a behavioural data logger in the coastal area of Tromsø, Norway. Video data from one tagged whale showed that the whale remained in close vicinity of fishing boats for 43 min, and revealed the presence of large numbers of dead fish, fish-eating killer whales, fishing boats, and fishing gear. In waters with large numbers of dead fish, the whale raised its upper jaw, a motion associated with engulfing discard fish from fishing boats, and this feeding behaviour differed markedly from lunge-feeding observed in two other whales in the same area. This behaviour was defined as “pick-up feeding”. No lunge feeding was seen on the data logger when the whale foraged around fishing boats. This study highlights a novel humpback whale foraging strategy: low energy gain from scattered prey but also low energy costs as high-energy lunge feeding is not required. | |
dc.format.extent | 6 | |
dc.format.extent | 2035413 | |
dc.language.iso | eng | |
dc.relation.ispartof | Ethology | en |
dc.subject | Biologging | en |
dc.subject | Energy cost | en |
dc.subject | Feeding behaviour | en |
dc.subject | Fisheries interaction | en |
dc.subject | Humpback whales | en |
dc.subject | DAS | en |
dc.title | Non-lunge feeding behaviour of humpback whales associated with fishing boats in Norway | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. Sea Mammal Research Unit | en |
dc.contributor.institution | University of St Andrews. Marine Alliance for Science & Technology Scotland | en |
dc.contributor.institution | University of St Andrews. Scottish Oceans Institute | en |
dc.contributor.institution | University of St Andrews. Institute of Behavioural and Neural Sciences | en |
dc.contributor.institution | University of St Andrews. Centre for Social Learning & Cognitive Evolution | en |
dc.contributor.institution | University of St Andrews. School of Biology | en |
dc.contributor.institution | University of St Andrews. Bioacoustics group | en |
dc.identifier.doi | https://doi.org/10.1111/eth.13419 | |
dc.description.status | Peer reviewed | en |
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