Genetic and morphological divergence in the warm-water planktonic foraminifera genus Globigerinoides

Autoři: Raphaël Morard aff001;  Angelina Füllberg aff001;  Geert-Jan A. Brummer aff002;  Mattia Greco aff001;  Lukas Jonkers aff001;  André Wizemann aff004;  Agnes K. M. Weiner aff001;  Kate Darling aff006;  Michael Siccha aff001;  Ronan Ledevin aff008;  Hiroshi Kitazato aff009;  Thibault de Garidel-Thoron aff010;  Colomban de Vargas aff011;  Michal Kucera aff001
Působiště autorů: MARUM Center for Marine Environmental Sciences, University of Bremen, Leobener Strasse, Bremen, Germany aff001;  NIOZ Royal Netherlands Institute for Sea Research, Department of Ocean Systems, and Utrecht University, Den Burg, and Utrecht University, The Netherlands aff002;  Vrije Universiteit Amsterdam, Department of Earth Sciences, Faculty of Science, Amsterdam, The Netherlands aff003;  Leibniz Centre for Tropical Marine Research, Bremen, Germany aff004;  Department of Biological Sciences, Smith College, Northampton, Massachusetts, United States of America aff005;  School of GeoSciences, University of Edinburgh, Edinburgh, Scotland, United Kingdom aff006;  School of Geography and Sustainable Development, University of St Andrews, St Andrews, Scotland, United Kingdom aff007;  UMR5199 PACEA, Université de Bordeaux, Allée Geoffroy Saint Hilaire, Pessac, France aff008;  Japan Agency for Marine Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa, Japan aff009;  Aix-Marseille Université, CNRS, IRD, Collège de France, INRA, CEREGE, Aix-en-Provence, France aff010;  Sorbonne Université, CNRS, Station Biologique de Roscoff, UMR 7144, ECOMAP, Roscoff, France aff011;  Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/Tara GOSEE, Paris, France aff012
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article


The planktonic foraminifera genus Globigerinoides provides a prime example of a species-rich genus in which genetic and morphological divergence are uncorrelated. To shed light on the evolutionary processes that lead to the present-day diversity of Globigerinoides, we investigated the genetic, ecological and morphological divergence of its constituent species. We assembled a global collection of single-cell barcode sequences and show that the genus consists of eight distinct genetic types organized in five extant morphospecies. Based on morphological evidence, we reassign the species Globoturborotalita tenella to Globigerinoides and amend Globigerinoides ruber by formally proposing two new subspecies, G. ruber albus n.subsp. and G. ruber ruber in order to express their subspecies level distinction and to replace the informal G. ruber “white” and G. ruber “pink”, respectively. The genetic types within G. ruber and Globigerinoides elongatus show a combination of endemism and coexistence, with little evidence for ecological differentiation. CT-scanning and ontogeny analysis reveal that the diagnostic differences in adult morphologies could be explained by alterations of the ontogenetic trajectories towards final (reproductive) size. This indicates that heterochrony may have caused the observed decoupling between genetic and morphological diversification within the genus. We find little evidence for environmental forcing of either the genetic or the morphological diversification, which allude to biotic interactions such as symbiosis, as the driver of speciation in Globigerinoides.

Klíčová slova:

Cryptic speciation – Morphogenesis – Paleogenetics – Phylogenetic analysis – Phylogenetics – Phylogeography – Plankton – Taxonomy


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