Caloglossa intermedia, sp. nov. (Rhodophyta) from the western atlantic coast: molecular and morphological analyses with special reference to C. leprieurii and C. monosticha |
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| Authors: | Mitsunobu Kamiya John A West Giuseppe C Zuccarello Hiroshi Kawai |
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| Institution: | Kobe University Research Center for Inland Seas, 2746, Iwaya, Awaji-cho 656-2401, Japan;School of Botany, University of Melbourne, Parkville, Victoria 3052, Australia;School of Biological Science, The University of New South Wales, Sydney, New South Wales 2052, Australia;Kobe University Research Center for Inland Seas, Rokkodai, Kobe 657-8501, Japan |
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| Abstract: | Caloglossa intermedia , sp. nov. is described from estuaries and salt marshes of Atlantic North America. This species is related to C. leprieurii (Montagne) G. Martens based on the position of rhizoids, whereas it is more similar to C. monosticha Kamiya in the number of cell rows at the nodes. Rhizoidal development of this alga also shows an intermediate characteristic between C. leprieurii and C. monosticha. Crosses were successful between the strains of C. intermedia from Georgia and South Carolina, but neither strain was interfertile with morphologically related species. C. intermedia from Georgia, New Jersey, and South Carolina had identical DNA sequences in the Rubisco spacer and flanking regions of rbc L and rbc S. This alga was more closely related to C. leprieurii in a molecular phylogenetic analysis. The evolution of each morphological character is discussed. |
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| Keywords: | biogeography Caloglossa intermedia sp nov C leprieurii C monosticha Ceramiales Delesseriaceae molecular phylogeny reproductive isolation Rhodophyta Rubisco spacer |
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