Journal Article10.1080/0967026042000236436
Asparagopsis taxiformis and Asparagopsis armata (Bonnemaisoniales, Rhodophyta): genetic and morphological identification of Mediterranean populations
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TL;DR: In this paper, the authors defined species boundaries in the Mediterranean Sea by inferring phylogenies from sequence data from a variable region in the nuclear LSU rDNA gene, the plastid RuBisCo spacer, and the mitochondrial cox2.
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Abstract: The tropical-subtropical red seaweed Asparagopsis Montagne (Bonnemaisoniales) constitutes the haploid, gametophytic phase in a heteromorphic diplo-haplontic life cycle. The diploid tetrasporophyte is known as the ‘Falkenbergia’ stage. The genus contains two species, A. armata and A. taxiformis, both present in the Mediterranean Sea where they are regarded as introduced. A. armata is morphologically distinct from A. taxiformis in that it possesses long stolons bearing harpoon-like hooks. The seemingly morphologically identical ‘Falkenbergia’ stages of the two Asparagopsis species and phenotypic variation within these species have caused taxonomic confusion. We defined species boundaries in the Mediterranean Sea by inferring phylogenies from sequence data from a variable region in the nuclear LSU rDNA gene, the plastid RuBisCo spacer, and the mitochondrial cox2 – 3 spacer of specimens from the Mediterranean, western Europe and the Canary Islands. Results indicate that A. armata and its ‘Falkenbergia’ tetras...
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Citations
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104
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