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dc.contributor.authorMcKeegan, K. A.
dc.contributor.authorClayton, Kate
dc.contributor.authorWilliams, Rob
dc.contributor.authorAshe, Erin
dc.contributor.authorReiss, Stephanie
dc.contributor.authorMendez-Bye, Andrea
dc.contributor.authorJanik, Vincent M.
dc.contributor.authorGötz, Thomas
dc.contributor.authorZinkgraf, Matthew
dc.contributor.authorAcevedo-Gutiérrez, Alejandro
dc.identifier.citationMcKeegan , K A , Clayton , K , Williams , R , Ashe , E , Reiss , S , Mendez-Bye , A , Janik , V M , Götz , T , Zinkgraf , M & Acevedo-Gutiérrez , A 2024 , ' The effect of a startle-eliciting device on the foraging success of individual harbor seals ( Phoca vitulina ) ' , Scientific Reports , vol. 14 , 3719 .
dc.identifier.otherORCID: /0000-0001-7894-0121/work/153452052
dc.description.abstractPinniped predation on commercially and ecologically important prey has been a source of conflict for centuries. In the Salish Sea, harbor seals (Phoca vitulina) are suspected of impeding the recovery of culturally and ecologically critical Pacific salmon (Oncorhynchus spp.). In Fall 2020, a novel deterrent called Targeted Acoustic Startle Technology (TAST) was deployed at Whatcom Creek to deter harbor seals from preying on fall runs of hatchery chum (O. keta) and Chinook (O. tshawytscha) salmon in Bellingham, Washington, USA. Field observations were conducted in 2020 to compare the presence and foraging success of individual harbor seals across sound exposure (TAST-on) and control (TAST-off) conditions. Observations conducted the previous (2019) and following (2021) years were used to compare the effects observed in 2020 to two control years. Using photo-identification, individual seals were associated with foraging successes across all 3 years of the study. Generalized linear mixed models showed a significant 45.6% reduction in the duration (min) individuals remained at the creek with TAST on, and a significant 43.8% reduction in the overall foraging success of individuals. However, the observed effect of TAST varied across individual seals. Seals that were observed regularly within one season were more likely to return the year after, regardless of TAST treatment. Generalized linear models showed interannual variation in the number of seals present and salmon consumed. However, the effect of TAST in 2020 was greater than the observed variation across years. Our analyses suggest TAST can be an effective tool for managing pinniped predation, although alternate strategies such as deploying TAST longer-term and using multi-unit setups to increase coverage could help strengthen its effects. Future studies should further examine the individual variability found in this study.
dc.relation.ispartofScientific Reportsen
dc.subjectQH301 Biologyen
dc.subjectSDG 14 - Life Below Wateren
dc.titleThe effect of a startle-eliciting device on the foraging success of individual harbor seals (Phoca vitulina)en
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Institute of Behavioural and Neural Sciencesen
dc.contributor.institutionUniversity of St Andrews. Centre for Social Learning & Cognitive Evolutionen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Bioacoustics groupen
dc.description.statusPeer revieweden

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