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Título: | Genetic affinities and biogeography of putative Levantine-endemic seaweed Treptacantha rayssiae (Ramon) M.Mulas, J.Neiva & Á.Israel, comb. nov. (Phaeophyceae) |
Autor: | Mulas, Martina; Neiva, João; Sadogurska, Sofia S.; Ballesteros, Enric CSIC ORCID ; Serrao, Ester Álvares; Rilov, Gil; Israel, Álvaro | Palabras clave: | New combination Brown algae Cystoseira rayssiae COI Rocky-shore assemblages Israel Mediterranean Sea |
Fecha de publicación: | 2020 | Editor: | Muséum national d'Histoire naturelle (France) | Citación: | Cryptogamie Algologie 41(10) : 91-103 (2020) | Resumen: | Cystoseira sensu lato (Ochrophyta) forests are important habitat formers in the Mediterranean Sea, but they have mostly been studied in the western basin where many species are under decline. In the eastern basin, where fewer species occur, Cystoseira rayssiae Ramon was described in the year 2000 as an endemic species based on morphological characteristics from herbaria samples collected on the Israeli coast. No further investigations have been conducted on this peculiar species since, but recently it has been recorded in contiguous Lebanon and outside the Mediterranean. Our work was aimed at confi rming the taxonomic validity and endemic nature of this species, including its position among the recently split Cystoseira sensu stricto, Carpodesmia Greville and Treptacantha Kützing genera, by sequencing the mitochondrial COI gene and by examining morphological characteristics in samples from three diff erent sites in northern Israel. Notwithstanding considerable morphological plasticity, molecular analyses revealed a single unique COI sequence. Phylogenetic analyses show that Cystoseira rayssiae belongs to the resurrected genus Treptacantha and hence, the new combination Treptacantha rayssiae (Ramon) M.Mulas, J.Neiva & Á.Israel, comb. nov., is proposed. Unique sequences and a restricted range support its Levantine-endemic status. Intriguing extra-Mediterranean reports from the Red Sea and the Persian Gulf are probably misidentifi cations rather than refl ecting a disjunct distribution or recent invasion. | Descripción: | Este artículo contiene 13 páginas, 5 figuras, 1 tabla, 2 apéndices. | Versión del editor: | https://doi.org/10.5252/cryptogamie- algologie2020v41a10 | URI: | http://hdl.handle.net/10261/220485 | ISSN: | 0181-1568 | E-ISSN: | 1776-0984 |
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