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dc.contributor.authorDarling, Kate F.
dc.contributor.authorWade, Christopher M.
dc.contributor.authorSiccha, Michael
dc.contributor.authorTrommer, Gabriele
dc.contributor.authorSchulz, Hartmut
dc.contributor.authorAbdolalipour, Samereh
dc.contributor.authorKurasawa, Atsushi
dc.identifier.citationDarling , K F , Wade , C M , Siccha , M , Trommer , G , Schulz , H , Abdolalipour , S & Kurasawa , A 2017 , ' Genetic diversity and ecology of the planktonic foraminifers Globigerina bulloides , Turborotalita quinqueloba and Neogloboquadrina pachyderma off the Oman margin during the late SW Monsoon ' , Marine Micropaleontology , vol. 137 , pp. 64-77 .
dc.identifier.otherPURE: 251423776
dc.identifier.otherPURE UUID: d1559220-d27a-438c-8eb4-b740627eb887
dc.identifier.otherRIS: urn:19015E5244F2AC3CC582B33E84D406A5
dc.identifier.otherScopus: 85033577102
dc.identifier.otherWOS: 000417670800005
dc.descriptionThe molecular work was funded by an Advanced Fellowship award to K. Darling (UK Natural Environment Research Council (NERC); NER/J/S/2000/00860 and NE/D009707/1). SA received support from a DAAD fellowship (A0998101) and HS was supported by a DFG grant (SCHU 1605/2-1).en
dc.description.abstractThe tropical waters of the Arabian Sea are among the richest biological areas of the world. The highly complex monsoonal system is particularly challenging for palaeoenvironmental study, which relies heavily upon understanding the modern-day ecology of planktonic foraminiferal assemblages and their geochemical signatures throughout the monsoonal cycle. Major upwelling responders such as G. bulloides, T. quinqueloba and N. pachyderma, typically associated with cooler mid to higher latitude ecosystems, are also found in number in the tropical Arabian Sea. Due to the more usual cooler water affinity of these morphospecies, the oceanographically isolated tropical upwelling ecosystem of the Arabian Sea potentially harbours new ecologically distinct genotypes (ecotypes). Samples were collected off the Oman margin at 15 stations towards the end of the summer monsoon to determine the genetic profiles of these morphospecies in both upwelling and open ocean regimes. Phylogenetic analysis of their small subunit (SSU) rDNA sequences revealed several new genetically distinct ecotypes. Two genetically divergent ecotypes of G. bulloides (Types Ia and IIf) were identified along the cruise track. Type Ia, a member of the G. bulloides warm water lineage, was found in both the upwelling and open ocean regions. The second genotype (IIf), a member of the G. bulloides cool water lineage, was found only in more marginal late upwelling cooler waters. Initial visual assessment of G. bulloides images suggests that it may be morphologically cryptic. Two highly divergent genotypes of T. quinqueloba (Types Ib and IIe) were also identified, which were largely confined to the eastern and northern Arabian Sea. Type IIe is a new member of the T. quinqueloba cool water lineage which points to its potential cool water affinity, but genotyping numbers are too low to confirm a specific association with upwelling. A new highly divergent genotype of N. pachyderma (Type VIII) was also identified at the western and southern stations. Comparison of global upwelling system genotype assemblages currently indicate little regional commonality. This complicates regional palaeoproxy understanding, since geochemical calibrations are known to be species and genotype specific. Detailed studies of the ecology and diversity of genotypes within each system should therefore be carried out to ensure the accuracy of palaeorecord interpretation.
dc.relation.ispartofMarine Micropaleontologyen
dc.rightsCopyright © 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (
dc.subjectPlanktonic foraminiferaen
dc.subjectMarine phylogeographyen
dc.subjectArabian Sea upwellingen
dc.subjectProtist genetic diversityen
dc.subjectQH301 Biologyen
dc.subjectSDG 14 - Life Below Wateren
dc.titleGenetic diversity and ecology of the planktonic foraminifers Globigerina bulloides, Turborotalita quinqueloba and Neogloboquadrina pachyderma off the Oman margin during the late SW Monsoonen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Geography & Sustainable Developmenten
dc.description.statusPeer revieweden

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