Systematics of the genus Halimeda (Bryopsidales, Chlorophyta) in Brazil including the description of Halimeda jolyana sp. nov
| Autor: | Carlos Frederico D. Gurgel, Maria de Fátima de Oliveira-Carvalho, Sonia Maria Barreto Pereira, Heroen Verbruggen, Caroline Feijão Ximenes, Maria Elizabeth Bandeira-Pedrosa, Valéria Cassano |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Systematics biology 010604 marine biology & hydrobiology Biogeography Bryopsidales Plant Science Aquatic Science biology.organism_classification 01 natural sciences DNA barcoding 03 medical and health sciences Phylogeography MORFOLOGIA VEGETAL 030104 developmental biology Taxon Botany Taxonomy (biology) Halimeda |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 2330-2968 0031-8884 |
| DOI: | 10.2216/16-77.1 |
| Popis: | The genus Halimeda has a wide geographic distribution in tropical to subtropical regions of the world. Molecular studies have uncovered cryptic and pseudocryptic species as well as strong biogeographic signals in phylogenies. To date, the diversity of Brazilian Bryopsidales has been studied from only a morphological perspective. Here we revised the diversity of Brazilian Halimeda based on molecular data (DNA barcode assessments of the tufA marker and multigene concatenated phylogenies) as well as morphological observations. Of the seven recognized morphospecies, only three were confirmed by molecular data: Halimeda opuntia, H. simulans and H. incrassata. The remaining four species, referred to as H. aff. cuneata, H. aff. gracilis, H. aff. tuna and H. aff. discoidea, showed morphological similarities with known species, but their sequences did not group with sequences of specimens from type localities, indicating the presence of cryptic diversity. Among the four taxa, H. aff. cuneata is so far en... |
| Databáze: | OpenAIRE |
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