Colpomenia durvillei (Scytosiphonaceae, Phaeophyceae): its distribution and relationships with other elongate species of the genus
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Abstract
The taxonomic distinctiveness and distribution of the brown alga Colpomenia durvillei are debatable; the species was first described from central Chile. We analyzed mitochondrial cox3 and plastid rbcL sequences from specimens collected in central Chile and Sonora, Mexico, in combination with morphological observations of specimens collected in Chile, Peru, and Mexico. Compared with other elongate species of the genus, C. durvillei is distinguished by erect, elongate thalli arising from a wide colpomenioid base, up to eight layers of cortical and medullary cells, and plurilocular sporangia with many layers (up to 18 locules). In all phylogenetic analyses of cox3 and rbcL sequences, all elongate species of the genus formed a clade, in which C. durvillei was consistently distinct from congeners. Colpomenia bullosa was closely related to C. durvillei in our cox3 analyses, and the clade containing these two species was closely related to Colpomenia phaeodactyla. This is the first report to confirm C. durvillei by molecular data and also the first report on the occurrence of the species in Sonora, Mexico. It had previously been misidentified as a variant of C. phaeodactyla on the Pacific coast of South America, and the name C. durvillei was misapplied to C. bullosa in New Zealand.
©2012 by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Masthead
- Masthead
- Research Articles
- Polysiphonia sensu lato (Ceramiales, Florideophyceae) species of Caribbean Panama including Polysiphonia lobophoralis sp. nov. and Polysiphonia nuda sp. nov.
- Molecular support for the establishment of the new genus Laurenciella within the Laurencia complex (Ceramiales, Rhodophyta)
- Neosiphonia peruviensis sp. nov. (Rhodomelaceae, Rhodophyta) from the Pacific coast of South America
- Colpomenia durvillei (Scytosiphonaceae, Phaeophyceae): its distribution and relationships with other elongate species of the genus
- Phymatolithon lamii (Hapalidiaceae, Corallinales, Rhodophyta): a first report for the Mediterranean Sea
- Floristic macroalgal diversity in selected submarine caves located within two marine protected areas off Lampedusa Island and Sicily (Italy)
- Species composition, zonation, and biomass of marine benthic macroalgae in Kongsfjorden, Svalbard
- Diversity, occurrence, and habitats of the diatom genus Bacteriastrum (Bacillariophyta) in the northern Adriatic Sea, with the description of B. jadranum sp. nov.
- Characterization of the protein phosphatase 2c gene from Porphyra yezoensis and functional analysis under dessicating conditionsa
- Antibacterial compound from the endophytic fungus Phomopsis longicolla isolated from the tropical red seaweed Bostrychia radicans
- Short Communication
- First record of fertile gametophytes of Polysiphonia perforans (Ceramiales, Rhodophyta)
