Líffræðifélag Íslands - biologia.is
Líffræðiráðstefnan 2019

Erindi/veggspjald / Talk/poster V33

Variation in killer whale call types around Iceland

Höfundar / Authors: Anna Selbmann (1), Jörundur Svavarsson (1), Patrick Miller (2), Volker B. Deecke (3), Olga A. Filatova (4), Ivan D. Fedutin (4), Edda E. Magnúsdóttir (1), Claire Lacey (2), Filipa Samarra (5)

Starfsvettvangur / Affiliations: 1. University of Iceland, 2. University of St. Andrews, 3. University of Cumbria, 4. Moscow State University, 5. Marine and Freshwater Research Institute

Kynnir / Presenter: Anna Selbmann

Passive acoustic monitoring can be an effective and inexpensive way to monitor cetacean presence, migration and behaviour. Killer whale (Orcinus orca) pulsed calls are ideal for acoustic monitoring as they provide information on different populations, ecotypes and social groups. In Iceland, individuals and groups of killer whales exhibit variation in movement patterns and dietary preferences. Therefore, acoustic monitoring can provide important information on movements and habitat use of different subsets of the population. This study describes the repertoire of killer whales using data collected between 2005-2016 from herring (Clupea harengus) spawning (Vestmannaeyjar) and overwintering grounds (Snæfellsnes). Calls were compared to previous recordings from Faxaflói bay (2004) and Skjálfandi bay (2008-2011). Most call types occurred in both herring overwintering and spawning grounds but some were recorded only in one of the two locations, suggesting that different groups have different movement patterns. The majority of calls detected in the previous samples could be matched to call types from the main dataset. This suggests stability in the acoustic repertoire over time, as well as variability within the repertoire in the frequency of use of different call types as acoustic markers and provides the basis for future studies.