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dc.contributor.authorAgrelo, Macarena
dc.contributor.authorMarón, Carina F.
dc.contributor.authorDaura-Jorge, Fábio G.
dc.contributor.authorRowntree, Victoria J.
dc.contributor.authorSironi, Mariano
dc.contributor.authorHammond, Philip S.
dc.contributor.authorIngram, Simon N.
dc.contributor.authorVilches, Florencia O.
dc.contributor.authorSeger, Jon
dc.contributor.authorSimões-Lopes, Paulo C.
dc.identifier.citationAgrelo , M , Marón , C F , Daura-Jorge , F G , Rowntree , V J , Sironi , M , Hammond , P S , Ingram , S N , Vilches , F O , Seger , J & Simões-Lopes , P C 2023 , ' Effect of kelp gull harassment on southern right whale calf survival : a long-term capture–recapture analysis ' , Biology Letters , vol. 19 , no. 6 , 20230119 .
dc.identifier.otherRIS: urn:DCF52ACAAD7FE71B22EEB70D6D18CF25
dc.identifier.otherORCID: /0000-0002-2381-8302/work/137089269
dc.descriptionFunding: The authors thank the Coordination of Superior Level Staff Improvement (CAPES) from Brazil for providing a doctoral scholarship and grant CAPES-PRINT (grant no. 88887.370641/2019-00) to M.A. The National Council for Technological and Scientific Development (CNPq) from Brazil provided research grants to F.G.D.-J. (grant no. 308867/2019-0), and P.C.S.-L. (grant no. 305573/2013-6).en
dc.description.abstractKelp gulls (Larus dominicanus) commonly feed on the skin and blubber of surfacing southern right whales (SRW, Eubalaena australis) in the near shore waters of Península Valdés (PV), Argentina. Mothers and especially calves respond to gull attacks by changing their swimming speeds, resting postures and overall behaviour. Gull-inflicted wounds per calf have increased markedly since the mid-1990s. Unusually high mortality of young calves occurred locally after 2003, and increasing evidence points to gull harassment as a factor contributing to the excess deaths. After leaving PV, calves undertake a long migration with their mothers to summer feeding areas; their health during this strenuous exertion is likely to affect their probabilities of first-year survival. To explore the effects of gull-inflicted wounds on calf survival, we analysed 44 capture–recapture observations between 1974 and 2017, for 597 whales photo-identified in their years of birth between 1974 and 2011. We found a marked decrease in first-year survival associated with an increase in wound severity over time. Our analysis supports recent studies indicating that gull harassment at PV may impact SRW population dynamics.
dc.relation.ispartofBiology Lettersen
dc.subjectEubalaena australisen
dc.subjectGull-inflicted lesionsen
dc.subjectPopulation dynamicsen
dc.subjectQL Zoologyen
dc.subjectQA Mathematicsen
dc.titleEffect of kelp gull harassment on southern right whale calf survival : a long-term capture–recapture analysisen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.description.statusPeer revieweden

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