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The presence of exotic Hypnea flexicaulis (Rhodophyta) in the Mediterranean Sea as indicated by morphology, rbcL and cox1 analyses
Wolf, M.A.; Sfriso, A.; Andreoli, C.; Moro, I. (2011). The presence of exotic Hypnea flexicaulis (Rhodophyta) in the Mediterranean Sea as indicated by morphology, rbcL and cox1 analyses. Aquat. Bot. 95(1): 55-58. hdl.handle.net/10.1016/j.aquabot.2011.02.009
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770, more
Peer reviewed article  

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Keywords
    Hypnea flexicaulis Y.Yamagishi & M.Masuda, 2000 [WoRMS]; Marine
Author keywords
    Exotic macroalgae; Hypnea flexicaulis; Mediterranean Sea; Venice Lagoon; cox1; rbcL

Authors  Top 
  • Wolf, M.A.
  • Sfriso, A.
  • Andreoli, C.
  • Moro, I.

Abstract
    Here we report the first finding of Hypnea flexicaulis Yamagishi and Masuda in the Mediterranean Sea (Lagoon of Venice, Italy), identified through molecular analyses using the plastid ribulose-1,5-bisphosphate carboxylase/oxygenase (rbcL) and the mitochondrial protein-coding cytochrome c oxidase subunit I (cox1) genes. The phylogenetic reconstruction, based on rbcL + cox1 multiple alignment, showed that all specimens of H. flexicaulis from Venice, Korea, Philippines and Taiwan were included in a monophyletic group supported by a bootstrap value of 100%.It is highly probable that H. flexicaulis has been introduced from Indo-Pacific populations, in particular the Korean one, probably via ship traffic or shellfish transfers.The use of DNA barcoding combined with morphological observations was, in this case, a rapid way to identify this allochthonous species.

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