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dc.contributor.authorMul, Evert
dc.contributor.authorBlanchet, Marie Anne
dc.contributor.authorMcClintock, Brett T.
dc.contributor.authorGrecian, W. James
dc.contributor.authorBiuw, Martin
dc.contributor.authorRikardsen, Audun
dc.identifier.citationMul , E , Blanchet , M A , McClintock , B T , Grecian , W J , Biuw , M & Rikardsen , A 2020 , ' Killer whales are attracted to herring fishing vessels ' , Marine Ecology Progress Series , vol. 652 , pp. 1-13 .
dc.identifier.otherORCID: /0000-0002-6428-719X/work/83481974
dc.descriptionE.M. was funded by a PhD scholarship from VISTA, which is a basic research programme in collaboration between The Norwegian Academy of Science & Letters and Equinor. The fieldwork was partly financed by the Regional Norwegian Research Counsel (Whalefeast project, RFFNORD no. 282469).en
dc.description.abstractMarine mammals and fisheries often target the same resources, which can lead to operational interactions. Potential consequences of operational interaction include entanglements and damaged or reduced catches but also enhanced foraging opportunities, which can attract marine mammals to fishing vessels. Responsible fisheries management therefore requires detailed knowledge of the impact of these interactions. In northern Norway, killer whales Orcinus orca are frequently observed in association with large herring aggregations during the winter. We use a combination of biotelemetry and fisheries data to study if, to what extent and at what distances killer whales are attracted to fishing activity. Twenty-five satellite transmitters were deployed on killer whales at herring overwintering and spawning grounds, often near fishing vessels. Over 50% of the killer whale core areas of high usage overlapped with the fisheries core areas, and individual whales spent up to 34% of their time close to active fishing. We used a 3-state hidden Markov model to assess whether killer whale movements were biased towards fishing activities. Of the overall whale movements, 15% (CI = 11− 21%) were biased towards fishing activities, with marked heterogeneity among individuals (0−57%). During periods of active fishing, whale movements were biased towards fishing events 44% (CI = 24− 66%) of the time, with individual percentages ranging from 0 to 79%. Whales were more likely to be attracted when they were within 20 km. This information can be used in fishery management to consider potential consequences for fishers and whales.
dc.relation.ispartofMarine Ecology Progress Seriesen
dc.subjectFishery interactionsen
dc.subjectHerring fisheryen
dc.subjectHidden Markov modelen
dc.subjectKiller whalesen
dc.subjectOrcinus orcaen
dc.subjectQH301 Biologyen
dc.subjectSH Aquaculture. Fisheries. Anglingen
dc.subjectAquatic Scienceen
dc.subjectEcology, Evolution, Behavior and Systematicsen
dc.subjectSDG 14 - Life Below Wateren
dc.titleKiller whales are attracted to herring fishing vesselsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Mathematics and Statisticsen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.description.statusPeer revieweden

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