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dc.contributor.authorAllen, Simon J.
dc.contributor.authorPollock, Kenneth H.
dc.contributor.authorBouchet, Phil J.
dc.contributor.authorKobryn, Halina T.
dc.contributor.authorMcElligott, Deirdre B.
dc.contributor.authorNicholson, Krista E.
dc.contributor.authorSmith, Joshua N.
dc.contributor.authorLoneragan, Neil R.
dc.identifier.citationAllen , S J , Pollock , K H , Bouchet , P J , Kobryn , H T , McElligott , D B , Nicholson , K E , Smith , J N & Loneragan , N R 2017 , ' Preliminary estimates of the abundance and fidelity of dolphins associating with a demersal trawl fishery ' , Scientific Reports , vol. 7 , 4995 .
dc.identifier.otherPURE: 264696825
dc.identifier.otherPURE UUID: b29f0fe0-2fe7-42eb-b44d-aba4eaa4d882
dc.identifier.otherWOS: 000405180900068
dc.identifier.otherORCID: /0000-0002-2144-2049/work/66398489
dc.identifier.otherScopus: 85023189371
dc.description.abstractThe incidental capture of wildlife in fishing gear presents a global conservation challenge. As a baseline to inform assessments of the impact of bycatch on bottlenose dolphins (Tursiops truncatus) interacting with an Australian trawl fishery, we conducted an aerial survey to estimate dolphin abundance across the fishery. Concurrently, we carried out boat-based dolphin photo-identification to assess short-term fidelity to foraging around trawlers, and used photographic and genetic data to infer longer-term fidelity to the fishery. We estimated abundance at approximate to 2,300 dolphins (95% CI = 1,247-4,214) over the ≈ 25,880-km2 fishery. Mark-recapture estimates yielded 226 (SE = 38.5) dolphins associating with one trawler and some individuals photographed up to seven times over 12 capture periods. Moreover, photographic and genetic re-sampling over three years confirmed that some individuals show longterm fidelity to trawler-associated foraging. Our study presents the first abundance estimate for any Australian pelagic dolphin community and documents individuals associating with trawlers over days, months and years. Without trend data or correction factors for dolphin availability, the impact of bycatch on this dolphin population's conservation status remains unknown. These results should be taken into account by management agencies assessing the impact of fisheries-related mortality on this protected species.
dc.relation.ispartofScientific Reportsen
dc.rightsCopyright © The Author(s) 2017. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
dc.subjectBottle-nosed dolphinsen
dc.subjectPopulation viability analysisen
dc.subjectMarine mammalsen
dc.subjectAerial surveysen
dc.subjectGC Oceanographyen
dc.subjectQH301 Biologyen
dc.titlePreliminary estimates of the abundance and fidelity of dolphins associating with a demersal trawl fisheryen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Mathematics and Statisticsen
dc.description.statusPeer revieweden

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