Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Evidence for discrimination between feeding sounds of familiar fish and unfamiliar mammal-eating killer whale ecotypes by long-finned pilot whales
Curé, C.; Isojunno, S.; Vester, H.; Visser, F.; Oudejans, M.; Biassoni, N.; Massenet, M.; Barluet de Beauchesne, L.; Wensveen, P.J.; Sivle, L.D.; Tyack, P.L.; Miller, P.J.O. (2019). Evidence for discrimination between feeding sounds of familiar fish and unfamiliar mammal-eating killer whale ecotypes by long-finned pilot whales. Animal Cognition 22(5): 863-882. https://dx.doi.org/10.1007/s10071-019-01282-1
In: Animal Cognition. SPRINGER HEIDELBERG: Heidelberg. ISSN 1435-9448; e-ISSN 1435-9456
|  |
| Trefwoord |
Globicephala melas (Traill, 1809) [WoRMS]
|
| Author keywords |
Globicephala melas; Acoustic playbacks; Killer whale ecotypes; Heterospecific sound discrimination; Multi-sensor tags; Cetacean behavioral responses |
| Auteurs | | Top |
- Curé, C.
- Isojunno, S.
- Vester, H.
- Visser, F.
|
- Oudejans, M.
- Biassoni, N.
- Massenet, M.
- Barluet de Beauchesne, L.
|
- Wensveen, P.J.
- Sivle, L.D.
- Tyack, P.L.
- Miller, P.J.O.
|
| Abstract |
Killer whales (KW) may be predators or competitors of other cetaceans. Since their foraging behavior and acoustics differ among populations (‘ecotypes’), we hypothesized that other cetaceans can eavesdrop on KW sounds and adjust their behavior according to the KW ecotype. We performed playback experiments on long-finned pilot whales (Globicephala melas) in Norway using familiar fish-eating KW sounds (fKW) simulating a sympatric population that might compete for foraging areas, unfamiliar mammal-eating KW sounds (mKW) simulating a potential predator threat, and two control sounds. We assessed behavioral responses using animal-borne multi-sensor tags and surface visual observations. Pilot whales barely changed behavior to a broadband noise (CTRL−), whereas they were attracted and exhibited spyhops to fKW, mKW, and to a repeated-tonal upsweep signal (CTRL+). Whales never stopped nor started feeding in response to fKW, whereas they reduced or stopped foraging to mKW and CTRL+. Moreover, pilot whales joined other subgroups in response to fKW and CTRL+, whereas they tightened individual spacing within group and reduced time at surface in response to mKW. Typical active intimidation behavior displayed to fKW might be an antipredator strategy to a known low-risk ecotype or alternatively a way of securing the habitat exploited by a heterospecific sympatric population. Cessation of feeding and more cohesive approach to mKW playbacks might reflect an antipredator behavior towards an unknown KW ecotype of potentially higher risk. We conclude that pilot whales are able to acoustically discriminate between familiar and unfamiliar KW ecotypes, enabling them to adjust their behavior according to the perceived disturbance type. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
