Deep-diving beaked whales dive together but forage apart. Issue 1942 (13th January 2021)
- Record Type:
- Journal Article
- Title:
- Deep-diving beaked whales dive together but forage apart. Issue 1942 (13th January 2021)
- Main Title:
- Deep-diving beaked whales dive together but forage apart
- Authors:
- Alcázar-Treviño, Jesús
Johnson, Mark
Arranz, Patricia
Warren, Victoria E.
Pérez-González, Carlos J.
Marques, Tiago
Madsen, Peter T.
Aguilar de Soto, Natacha - Abstract:
- Abstract : Echolocating animals that forage in social groups can potentially benefit from eavesdropping on other group members, cooperative foraging or social defence, but may also face problems of acoustic interference and intra-group competition for prey. Here, we investigate these potential trade-offs of sociality for extreme deep-diving Blainville′s and Cuvier's beaked whales. These species perform highly synchronous group dives as a presumed predator-avoidance behaviour, but the benefits and costs of this on foraging have not been investigated. We show that group members could hear their companions for a median of at least 91% of the vocal foraging phase of their dives. This enables whales to coordinate their mean travel direction despite differing individual headings as they pursue prey on a minute-by-minute basis. While beaked whales coordinate their echolocation-based foraging periods tightly, individual click and buzz rates are both independent of the number of whales in the group. Thus, their foraging performance is not affected by intra-group competition or interference from group members, and they do not seem to capitalize directly on eavesdropping on the echoes produced by the echolocation clicks of their companions. We conclude that the close diving and vocal synchronization of beaked whale groups that quantitatively reduces predation risk has little impact on foraging performance.
- Is Part Of:
- Proceedings. Volume 288:Issue 1942(2021)
- Journal:
- Proceedings
- Issue:
- Volume 288:Issue 1942(2021)
- Issue Display:
- Volume 288, Issue 1942 (2021)
- Year:
- 2021
- Volume:
- 288
- Issue:
- 1942
- Issue Sort Value:
- 2021-0288-1942-0000
- Page Start:
- Page End:
- Publication Date:
- 2021-01-13
- Subjects:
- beaked whales -- collective behaviour -- acoustic interference -- eavesdropping -- cooperative foraging
Biology -- Periodicals
570.5 - Journal URLs:
- https://royalsocietypublishing.org/journal/rspb ↗
- DOI:
- 10.1098/rspb.2020.1905 ↗
- Languages:
- English
- ISSNs:
- 0962-8452
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library STI - ELD Digital store
- Ingest File:
- 25040.xml