Patterns and drivers of species diversity in the Indo-Pacific red seaweed Portieria

F. Leliaert; D.A. Payo; C.F.D. Gurgel; T. Schils; S.G.A. Draisma; G.W. Saunders; M. Kamiya; A.R. Sherwood; S.-M. Lin; J.M. Huisman; L. Le Gall; R.J. Anderson; J.J. Bolton; L. Mattio; M. Zubia; T. Spokes; C. Vieira; C.E. Payri; E. Coppejans; S. D'hondt; H. Verbruggen; O. De Clerck

doi:10.1111/jbi.13410

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Patterns and drivers of species diversity in the Indo-Pacific red seaweed Portieria

Journal article

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Patterns and drivers of species diversity in the Indo-Pacific red seaweed Portieria

F. Leliaert, D.A. Payo, C.F.D. Gurgel, T. Schils, S.G.A. Draisma, G.W. Saunders, M. Kamiya, A.R. Sherwood, S.-M. Lin, J.M. Huisman, …

Journal of Biogeography, Vol.45(10), pp.2299-2313

2018

DOI: https://doi.org/10.1111/jbi.13410

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Abstract

Aim: Biogeographical processes underlying Indo-Pacific biodiversity patterns have been relatively well studied in marine shallow water invertebrates and fishes, but have been explored much less extensively in seaweeds, despite these organisms often displaying markedly different patterns. Using the marine red alga Portieria as a model, we aim to gain understanding of the evolutionary processes generating seaweed biogeographical patterns. Our results will be evaluated and compared with known patterns and processes in animals. Location: Indo-Pacific marine region. Methods: Species diversity estimates were inferred using DNA-based species delimitation methods. Historical biogeographical patterns were inferred based on a six-gene time-calibrated phylogeny, distribution data of 802 specimens, and probabilistic modelling of geographical range evolution. The importance of geographical isolation for speciation was further evaluated by population genetic analyses at the intraspecific level. Results: We delimited 92 candidate species, most with restricted distributions, suggesting low dispersal capacity. Highest species diversity was found in the Indo-Malay Archipelago (IMA). Our phylogeny indicates that Portieria originated during the late Cretaceous in the area that is now the Central Indo-Pacific. The biogeographical history of Portieria includes repeated dispersal events to peripheral regions, followed by long-term persistence and diversification of lineages within those regions, and limited dispersal back to the IMA. Main conclusions: Our results suggest that the long geological history of the IMA played an important role in shaping Portieria diversity. High species richness in the IMA resulted from a combination of speciation at small spatial scales, possibly as a result of increased regional habitat diversity from the Eocene onwards, and species accumulation via dispersal and/or island integration through tectonic movement. Our results are consistent with the biodiversity feedback model, in which biodiversity hotspots act as both "centres of origin" and "centres of accumulation," and corroborate previous findings for invertebrates and fish that there is no single unifying model explaining the biological diversity within the IMA.

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Title: Patterns and drivers of species diversity in the Indo-Pacific red seaweed Portieria
Authors/Creators: F. Leliaert (Author/Creator) - Meise Botanic Garden
D.A. Payo (Author/Creator) - University of the Philippines Visayas
C.F.D. Gurgel (Author/Creator) - State Herbarium of South Australia
T. Schils (Author/Creator) - University of Guam
S.G.A. Draisma (Author/Creator) - Prince of Songkla University
G.W. Saunders (Author/Creator) - University of New Brunswick
M. Kamiya (Author/Creator) - Fukui Prefectural University
A.R. Sherwood (Author/Creator) - University of Hawaii System
S.-M. Lin (Author/Creator) - National Taiwan Ocean University
J.M. Huisman (Author/Creator) - Murdoch University
L. Le Gall (Author/Creator) - Institut de Systématique, Évolution, Biodiversité
R.J. Anderson (Author/Creator) - University of Cape Town
J.J. Bolton (Author/Creator) - University of Cape Town
L. Mattio (Author/Creator) - University of Cape Town
M. Zubia (Author/Creator)
T. Spokes (Author/Creator) - State Herbarium of South Australia
C. Vieira (Author/Creator) - Ghent University
C.E. Payri (Author/Creator) - Institut de Recherche pour le Développement
E. Coppejans (Author/Creator) - Ghent University
S. D'hondt (Author/Creator) - Ghent University
H. Verbruggen (Author/Creator) - The University of Melbourne
O. De Clerck (Author/Creator) - Ghent University
Publication Details: Journal of Biogeography, Vol.45(10), pp.2299-2313
Publisher: Blackwell Publishing Ltd
Identifiers: 991005541594607891
Copyright: © 2018 John Wiley & Sons Ltd
Murdoch Affiliation: School of Veterinary and Life Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.2 Marine Biology; 3.2.509 Marine Algae
Web Of Science research areas: Ecology; Geography, Physical
ESI research areas: Environment/Ecology