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dc.contributor.authorDoksæter, Lise Henriksen
dc.contributor.authorKvadsheim, Petter Helgevold
dc.contributor.authorFahlman, Andreas
dc.contributor.authorLam, Frans-Peter A.
dc.contributor.authorTyack, Peter L.
dc.contributor.authorMiller, Patrick J.O.
dc.date.accessioned2014-03-07T08:08:41Z
dc.date.accessioned2016-03-08T13:23:01Z
dc.date.available2014-03-07T08:08:41Z
dc.date.available2016-03-08T13:23:01Z
dc.date.issued2012
dc.identifier.citationFrontiers in Physiology 2012, 3en_GB
dc.identifier.urihttp://hdl.handle.net/20.500.12242/24
dc.identifier.urihttps://ffi-publikasjoner.archive.knowledgearc.net/handle/20.500.12242/24
dc.descriptionDoksæter, Lise Henriksen; Kvadsheim, Petter Helgevold; Fahlman, Andreas; Lam, Frans-Peter A.; Tyack, Peter L.; Miller, Patrick J.O.. Changes in dive behavior during sonar exposure in killer whales, pilot whales and sperm whales. Frontiers in Physiology 2012 ;Volum 3.en_GB
dc.description.abstractAnthropogenic underwater sound in the environment might potentially affect the behavior of marine mammals enough to have an impact on their reproduction and survival. Diving behavior of four killer whales (Orcinus orca), seven long-finned pilot whales (Globicephala melas), and four sperm whales (Physeter macrocephalus) was studied during controlled exposures to naval sonar [low frequency active sonar (LFAS): 1–2 kHz and mid frequency active sonar (MFAS): 6–7 kHz] during three field seasons (2006–2009). Diving behavior was monitored before, during and after sonar exposure using an archival tag placed on the animal with suction cups. The tag recorded the animal's vertical movement, and additional data on horizontal movement and vocalizations were used to determine behavioral modes. Killer whales that were conducting deep dives at sonar onset changed abruptly to shallow diving (ShD) during LFAS, while killer whales conducting deep dives at the onset of MFAS did not alter dive mode. When in ShD mode at sonar onset, killer whales did not change their diving behavior. Pilot and sperm whales performed normal deep dives (NDD) during MFAS exposure. During LFAS exposures, long-finned pilot whales mostly performed fewer deep dives and some sperm whales performed shallower and shorter dives. Acoustic recording data presented previously indicates that deep diving (DD) is associated with feeding. Therefore, the observed changes in dive behavior of the three species could potentially reduce the foraging efficiency of the affected animals.en_GB
dc.language.isoenen_GB
dc.subjectEkkolodd
dc.subjectSonar
dc.subjectHvaler
dc.subjectSonar
dc.subjectHvaler
dc.subjectDykking
dc.subjectAtferd
dc.titleChanges in dive behavior during sonar exposure in killer whales, pilot whales and sperm whales.en_GB
dc.typeArticleen_GB
dc.date.updated2014-03-07T08:08:41Z
dc.identifier.cristinID977362
dc.identifier.cristinID977362
dc.identifier.doi10.3389/fphys.2012.00400
dc.source.issn1664-042X
dc.type.documentJournal article


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