Harbour Porpoises Are Flexible Predators Displaying Context‐Dependent Foraging Behaviours
Stedt, Johanna LU
; Hamel, Héloïse
; Torres Ortiz, Sara
; Højer Kristensen, Jakob
and Wahlberg, Magnus
(2024)
In Ecology and Evolution
14(12).
- Abstract
- Opportunistic mobile predators can adapt their behaviour to specific foraging scenarios, allowing them to target diverse prey resources. An interesting example is the harbour porpoise (Phocoena phocoena), a marine mammal with a huge energy demand feeding on a large variety of fish, squid and shrimps. Little is known about the foraging behaviour of harbour porpoises, as observations of wild specimens are notoriously difficult to obtain. In this study, foraging was identified in almost 60% of videos from UAV recordings in Danish coastal waters during daylight hours. Observations reveal them to be flexible predators, foraging on both single fish and schools of fish, as well as individually and in groups of varying sizes. We argue that some of... (More)
- Opportunistic mobile predators can adapt their behaviour to specific foraging scenarios, allowing them to target diverse prey resources. An interesting example is the harbour porpoise (Phocoena phocoena), a marine mammal with a huge energy demand feeding on a large variety of fish, squid and shrimps. Little is known about the foraging behaviour of harbour porpoises, as observations of wild specimens are notoriously difficult to obtain. In this study, foraging was identified in almost 60% of videos from UAV recordings in Danish coastal waters during daylight hours. Observations reveal them to be flexible predators, foraging on both single fish and schools of fish, as well as individually and in groups of varying sizes. We argue that some of the observed behavioural adaptations and context-dependent strategies for prey capture are based on information transfer and social learning. Our results provide unprecedented insights into the foraging behaviour of an opportunistic mammalian predator. Furthermore, this study highlights the importance of porpoises having access to coastal areas for energy acquisition, where they are in conflict with anthropogenic disturbances such as fisheries with the risk of bycatch. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/f7f4dc9e-bb3f-4681-a8b9-8b8350c78884
- author
- Stedt, Johanna
LU
; Hamel, Héloïse
; Torres Ortiz, Sara
; Højer Kristensen, Jakob
and Wahlberg, Magnus
- organization
- publishing date
- 2024-12-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Ecology and Evolution
- volume
- 14
- issue
- 12
- article number
- e70671
- publisher
- Wiley-Blackwell
- external identifiers
-
- pmid:39633781
- scopus:85211177592
- ISSN
- 2045-7758
- DOI
- 10.1002/ece3.70671
- language
- English
- LU publication?
- yes
- id
- f7f4dc9e-bb3f-4681-a8b9-8b8350c78884
- date added to LUP
- 2024-12-11 14:08:10
- date last changed
- 2025-06-01 02:25:33
@article{f7f4dc9e-bb3f-4681-a8b9-8b8350c78884,
abstract = {{Opportunistic mobile predators can adapt their behaviour to specific foraging scenarios, allowing them to target diverse prey resources. An interesting example is the harbour porpoise (Phocoena phocoena), a marine mammal with a huge energy demand feeding on a large variety of fish, squid and shrimps. Little is known about the foraging behaviour of harbour porpoises, as observations of wild specimens are notoriously difficult to obtain. In this study, foraging was identified in almost 60% of videos from UAV recordings in Danish coastal waters during daylight hours. Observations reveal them to be flexible predators, foraging on both single fish and schools of fish, as well as individually and in groups of varying sizes. We argue that some of the observed behavioural adaptations and context-dependent strategies for prey capture are based on information transfer and social learning. Our results provide unprecedented insights into the foraging behaviour of an opportunistic mammalian predator. Furthermore, this study highlights the importance of porpoises having access to coastal areas for energy acquisition, where they are in conflict with anthropogenic disturbances such as fisheries with the risk of bycatch.}},
author = {{Stedt, Johanna and Hamel, Héloïse and Torres Ortiz, Sara and Højer Kristensen, Jakob and Wahlberg, Magnus}},
issn = {{2045-7758}},
language = {{eng}},
month = {{12}},
number = {{12}},
publisher = {{Wiley-Blackwell}},
series = {{Ecology and Evolution}},
title = {{Harbour Porpoises Are Flexible Predators Displaying Context‐Dependent Foraging Behaviours}},
url = {{http://dx.doi.org/10.1002/ece3.70671}},
doi = {{10.1002/ece3.70671}},
volume = {{14}},
year = {{2024}},
}