Show simple item record

Files in this item

Thumbnail

Item metadata

dc.contributor.authorHanson, Nora N.
dc.contributor.authorSmout, Sophie Caroline
dc.contributor.authorMoss, Simon
dc.contributor.authorPomeroy, Patrick
dc.date.accessioned2020-09-05T23:34:34Z
dc.date.available2020-09-05T23:34:34Z
dc.date.issued2019-09-06
dc.identifier255932606
dc.identifier099d168e-0c6d-4e5a-804c-a74797e99138
dc.identifier85071750431
dc.identifier000484997200010
dc.identifier.citationHanson , N N , Smout , S C , Moss , S & Pomeroy , P 2019 , ' Colony-specific differences in decadal longitudinal body composition of a capital-breeding marine top predator ' , Aquatic Conservation: Marine and Freshwater Ecosystems , vol. 29 , no. 51 , pp. 131-143 . https://doi.org/10.1002/aqc.3093en
dc.identifier.issn1052-7613
dc.identifier.otherORCID: /0000-0003-1603-5630/work/61621983
dc.identifier.otherORCID: /0000-0002-0017-8963/work/61622209
dc.identifier.urihttps://hdl.handle.net/10023/20557
dc.descriptionhe long‐term studies included in this paper were funded by the Natural Environment Research Council through the grant ‘SMRU Long‐term measurement of marine mammal population structure, dynamics and trophic interactions’, grant reference SMRU1001. PP was in receipt of NERC grant no. NE/G008930/1 and Esmée Fairbairn Foundation funding during the work. SCS was supported as a postdoctoral fellow in an EPSRC award to RK and PP.en
dc.description.abstract1. Capital breeding animals such as true seals (Phocidae) rely on accumulated body reserves to rear offspring. A mother's body composition at the start of a breeding episode may depend on recent environmental conditions and sets the resources available for the reproductive episode. 2.  At two grey seal (Halichoerus grypus) breeding colonies with contrasting demographic characteristics, factors influencing individual variation and temporal trends in the body composition (expressed as the lipid‐to‐protein mass ratio) of females were examined. 3.  Maternal reproductive expenditure, and the consequences for mothers and their pups, were investigated. 4.  Individual variation in postpartum maternal body composition was considerable. Mean values of 27% (±5%) lipid and 18% (±1%) protein were estimated by hydrogen isotope dilution. No evidence of age effects was detected. 5.  Mothers with a high lipid‐to‐protein mass ratio expended a higher proportion of lipid resources, conserved protein and returned with more protein the following year. 6.  Average maternal postpartum body composition was similar between the two colonies, but temporal patterns differed at one colony where pup production was decreasing from another where pup production was increasing. Mothers at the declining colony consistently weaned larger pups than mothers at the increasing colony across the range of mother sizes, but measures of maternal body composition did not predict pup weaning masses.
dc.format.extent449670
dc.language.isoeng
dc.relation.ispartofAquatic Conservation: Marine and Freshwater Ecosystemsen
dc.subjectBehaviouren
dc.subjectCostalen
dc.subjectMammalsen
dc.subjectPhysiologyen
dc.subjectReproductionen
dc.subjectQH301 Biologyen
dc.subjectNDASen
dc.subjectNERCen
dc.subjectSDG 14 - Life Below Wateren
dc.subject.lccQH301en
dc.titleColony-specific differences in decadal longitudinal body composition of a capital-breeding marine top predatoren
dc.typeJournal articleen
dc.contributor.sponsorNERCen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. School of Biologyen
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.identifier.doi10.1002/aqc.3093
dc.description.statusPeer revieweden
dc.date.embargoedUntil2020-09-06
dc.identifier.grantnumberNE/G008930/1en


This item appears in the following Collection(s)

Show simple item record