From endemism to widespread distribution: phylogeography of three amphidromous Sicyopterus species (Teleostei: Gobioidei: Sicydiinae)

Abstract

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 455:269-285 (2012) - DOI: https://doi.org/10.3354/meps09617 From endemism to widespread distribution: phylogeography of three amphidromous Sicyopterus species (Teleostei: Gobioidei: Sicydiinae) C. Lord1,2,*, J. Lorion3, A. Dettai4, S. Watanabe1, K. Tsukamoto1, C. Cruaud5, P. Keith2 1Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan 2Muséum National d’Histoire Naturelle, DMPA, UMR 7208, Ichtyologie, CP 26, 57 rue Cuvier, 75231 Paris cedex 05, France 3Marine Ecosystems Research Department - Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima, Yokosuka 237-0061, Japan 4Muséum National d’Histoire Naturelle, Systématique et Evolution, UMR 7138, Service de Systématique Moléculaire, CP 26, 57 rue Cuvier, 75231 Paris cedex 05, France 5Genoscope, Centre National de Séquençage, 2, rue Gaston Crémieux, CP5706, 91057 Evry cedex, France *Email: claralord@gmail.com ABSTRACT: Island freshwater habitats are colonised by amphidromous fish, which display an oceanic larval phase while the rest of their life cycle takes place in rivers. In the present study we evaluated the population structure of the widespread Sicyopterus lagocephalus (Gobioidei) over its Indo-Pacific distribution range, which encompasses the island chain (Indonesia − Papua New Guinea − Malaysia) known as the Indo-Pacific Barrier (IPB). Additional analysis of 2 endemic species, S. aiensis (Vanuatu) and S. sarasini (New Caledonia), living in sympatry with S. lagocephalus, represented comparative material and was used as the basis for an assessment of endemism and dispersal. Mitochondrial cytochrome b sequence data were obtained for 332 S. lagocephalus, 210 S. aiensis and 87 S. sarasini across each species’ range. Haplotype networks and F-statistics were used to determine patterns of population structure. A discrete phylogeographic diffusion model under a time-scaled coalescent tree prior was used to assess the history of the spatial expansion of S. lagocephalus across its wide spatial distribution. S. lagocephalus demonstrates high population structure across the IPB. It also displays a strong structure between Tahiti and all other locations sampled. No other population structure was identified in the entire western Pacific. Phylogenetic reconstruction and coalescence analysis indicate that the oldest population originated in the western Pacific, from which the eastern Pacific and the Indian Oceans were colonised. For the 2 endemic species, no genetic structure was identified across their respective ranges. From the genetic results associated with known elements of the life history of these species, we improved our understanding of the simultaneous existence of geographically close endemic species and a widespread species. KEY WORDS: Sicyopterus · Amphidromy · Pelagic larval duration · Biogeographical barrier · Endemism · Indo-Pacific · Cytochrome b · Population structure Full text in pdf format Supplementary material PreviousNextCite this article as: Lord C, Lorion J, Dettai A, Watanabe S, Tsukamoto K, Cruaud C, Keith P (2012) From endemism to widespread distribution: phylogeography of three amphidromous Sicyopterus species (Teleostei: Gobioidei: Sicydiinae). Mar Ecol Prog Ser 455:269-285. https://doi.org/10.3354/meps09617 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 455. Online publication date: May 30, 2012 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2012 Inter-Research.