The meroplankton communities from the coastal Ross Sea: a la

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TitleThe meroplankton communities from the coastal Ross Sea: a latitudinal studyAbstractThe study of meroplankton communities in the coastal Ross Sea has been difficult due to the logistical challenges associated with sampling in remote areas and with the hurdle of larval identification. As a result, it has not been possible to estimate the latitudinal changes in reproductive strategies of marine invertebrates and to investigate Thorson's rule---that planktotrophy is less favoured than lecithotrophy and brooding at high latitudes---along the southernmost coastline on Earth. As part of the Latitudinal Gradient Project (Antarctica New Zealand), we studied the meroplankton communities at three sites on the Victoria Land Coast and identified---using morphological and genetic information---11,117 larvae from 52 molecular Operational Taxonomical Units. This allowed for the analysis of patterns in larval diversity and abundance with latitude. Genetic identification permitted the usage of multivariate techniques to study changes in the meroplankton community and to further investigate the latitudinal variation in larval mode of nutrition. Our results showed distinct larval communities at each site, with species dominating nearby benthos being crucial in site discrimination, but with no latitudinal gradients in abundance or diversity. Planktotrophy was predominant in all three sites reflecting the minimal effect of Thorson's rule within the Ross Sea. © 2015, Springer International Publishing Switzerland.AcknowledgementsThe authors wish to thank Antarctica New Zealand and, in particular, S. Gordon for making the Latitudinal Gradient Project possible. Special thanks to the field team: J. Jury, K. Ruggiero, S. Van Dijken, L. Suberg, M. Hudson, M. Anderson, R. Millar, I. McLeod, R. Ingley and A. Fowler for assistance with sample collection and morphological identification of the specimens. The authors want to thank Dr Brian McArdle for statistical advice and the comments of the editors and reviewers which greatly improved the manuscript. Research was funded by a series of grants from the University of Auckland Research Committee and the Faculty Research Development Fund.

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1st AuthorGallego, R.AuthorGallego, R.Heimeier, D.Lavery, S.Sewell, M.Year2015JournalHydrobiologiaVolume761Number1Pages195-209DOI10.1007/s10750-015-2487-7URLhttps://www.scopus.com/inward/recor.....250d22e85cad8e49ca326b4a9Keywordsabundancecoastal zonecommunity structuregeomorphologyidentification methodinvertebratelarvalatitudinal gradientmarine environmentmeroplanktonnutritionreproductive strategyspecies diversitytaxonomy, AntarcticaEast AntarcticaNew ZealandRoss SeaSouthern OceanVictoria Land, Invertebrata, rank5Author KeywordsLarvaeLGPMeroplanktonRoss SeaThorson's rule

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TypeArticleCitationGallego, R., Heimeier, D., Lavery, S. and Sewell, M. (2015). The meroplankton communities from the coastal Ross Sea: a latitudinal study. Hydrobiologia, 761(1):195-209 doi:10.1007/s10750-015-2487-7 IdentifierGallego2015Relevancerank5