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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Testing species hypotheses in the mangrove genus Rhizophora from the Western hemisphere and South Pacific islands

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Author(s):
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Mori, Gustavo Maruyama [1] ; Madeira, Andre Guilherme [1] ; Cruz, Mariana Vargas [2] ; Tsuda, Yoshiaki [3] ; Takayama, Koji [4] ; Matsuki, Yu [5] ; Suyama, Yoshihisa [5] ; Iwasaki, Takaya [6] ; de Souza, Anete Pereira [7, 2] ; Zucchi, Maria Imaculada [8] ; Kajita, Tadashi [9]
Total Authors: 11
Affiliation:
[1] Sao Paulo State Univ UNESP, Inst Biosci, Sao Vicente - Brazil
[2] Univ Estadual Campinas, Ctr Biol Mol & Engn Genet, Campinas, SP - Brazil
[3] Univ Tsukuba, Mt Sci Ctr, Sugadaira Res Stn, Nagano - Japan
[4] Kyoto Univ, Dept Bot, Kyoto - Japan
[5] Tohoku Univ, Kawatabi Field Sci Ctr, Grad Sch Agr Sci, Sendai, Miyagi - Japan
[6] Kanagawa Univ, Fac Sci, Yokohama, Kanagawa - Japan
[7] Univ Estadual Campinas, Dept Biol Vegetal, Campinas, SP - Brazil
[8] Agencia Paulista Tecnol Agronegocios, Sao Paulo - Brazil
[9] Univ Ryukyus, Trop Biosphere Res Ctr, Iriomote Stn, Nishihara, Okinawa - Japan
Total Affiliations: 9
Document type: Journal article
Source: ESTUARINE COASTAL AND SHELF SCIENCE; v. 248, n. SI JAN 5 2021.
Web of Science Citations: 0
Abstract

The determination of species limits is key to biology, with practical implications for conservation policy makers, lawyers and stakeholders. However, naming species may be a difficult task as interspecific hybridization blurs species boundaries. Natural interspecific gene flow has been reported for seven distinct mangrove genera, including the iconic genus Rhizophora. Species limits within this genus have long been debated because of morphological similarity, natural variability in diagnostic traits, disjunct geographic distribution, and recent molecular data have reignited this issue. Here, we used a phylogeographical approach based on genome-wide single nucleotide polymorphism (SNP) data to test species hypotheses of R. mangle, R. racemosa and R. X harrisonii from the Atlantic East Pacific (AEP) biogeographic region and South Pacific islands. Genetic structure patterns and Approximate Bayesian Computation (ABC) analyses revealed that taxonomic identification based only on morphological traits could not predict genetic clustering alone nor the phylogenetic relationships among groups. The American continent plays an important role as a barrier to gene flow within the genus such that trees identified morphologically as R. racemosa from the Atlantic basin are more genetically similar to R. mangle from the same basin than to R. racemosa trees from the Pacific coast. Additionally, our findings supported previous studies that showed that R. samoensis is indistinguishable from R. mangle populations from the Pacific basin. Moreover, we provide novel evidence that R. X harrisonii is likely composed by two independently originated and separately maintained evolutionary lineages in both sides of the American continent. Our findings provide novel evidence of taxonomic inconsistency of current morphology-based species designations in Western hemisphere and South Pacific islands Rhizophora species. (AU)

FAPESP's process: 14/22821-9 - Population and functional genomics on the evolutionary study of neotropical Rhizophora species in face of historical and current climate changes
Grantee:Gustavo Maruyama Mori
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 13/26793-7 - Evolution of Avicennia schaueriana in face of historical and current climate changes: Functional genomics and ecophysiology
Grantee:Mariana Vargas Cruz
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 18/02655-8 - Unveiling the genetic diversity of Rhizophora species from the western world and South Pacific using RAD-seq
Grantee:Andre Guilherme Madeira
Support type: Scholarships abroad - Research Internship - Scientific Initiation
FAPESP's process: 13/08086-1 - Population and functional genomics and an ecophysiological approach on the evolutionary study of neotropical mangrove species in face of historical and current climate changes
Grantee:Gustavo Maruyama Mori
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 17/12920-8 - Species delimitation within Rhizophora genus from Western Hemisphere and South Pacific
Grantee:Andre Guilherme Madeira
Support type: Scholarships in Brazil - Scientific Initiation