The occurrence of Dictyota canariensis (Dictyotales, Phaeophyceae) in the Gulf of Mexico
-
Jorge G. Lozano-Orozco
,
Abel Sentíes
Abstract
The brown alga Dictyota canariensis (Grunow) Tronholm has so far been reported only from the eastern Atlantic Ocean (Canary Islands, Cape Verde, Madeira). In the present work, we record the species for the first time from the shores of the Gulf of Mexico, occurring in Montepío, Veracruz. The specimens were collected in December 2011 and October 2013, growing in the intertidal zone on moderately exposed rocky shores. To confirm the identification, we conducted phylogenetic analyses, combining the partial sequences of psbA and cox1 genes of l7 taxa. The low uncorrected “p” distance values obtained between Mexican and Canary Island specimens for each gene (0.3% for psbA and 1.8% for cox1) are indicative that these specimens most likely belong to the same species. The low genetic divergence is corroborated by morphological observations, which show that the Mexican specimens share the presence of rectangular pigmented patches near the rounded to obtuse apices, margins with triangle-shaped teeth, and a monostromatic medulla with D. canariensis. Additionally, male reproductive structures are described for the first time for this species.
Acknowledgments
The first author thanks R. Mondragon for helping him with portions of this paper. This study was supported by UAM-Iztapalapa, and PROMEP (UAMI-CA-117) and partially by a National Council of Science and Technology (CONACyT 218084) fellowship to J. Lozano. This paper contains some results from the Doctoral thesis of J. Lozano in the Doctorado en Ciencias Biológicas y de la Salud graduate program of the Universidad Autónoma Metropolitana.
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©2014 by De Gruyter
Articles in the same Issue
- Frontmatter
- Research articles
- A new species of phyllophoracean red algae (Gigartinales, Rhodophyta) from Korea: Stenogramma guleopensis sp. nov.
- Morphological and molecular studies on topotype material of Neoralfsia expansa (Phaeophyceae) reveal that Asian specimens assigned to this taxon are genetically distinct
- The occurrence of Dictyota canariensis (Dictyotales, Phaeophyceae) in the Gulf of Mexico
- Mapping Sargassum beds off the coast of Chon Buri Province, Thailand, using ALOS AVNIR-2 satellite imagery
- Scaly green flagellates from Spanish Atlantic coastal waters: molecular, ultrastructural and pigment analyses
- Transcriptome sequencing of the marine microalga, Chlorella pyrenoidosa (Chlorophyta), and analysis of carbonic anhydrase expression under salt stress
- An additional marine fungal lineage in the Diatrypaceae, Xylariales: Pedumispora rhizophorae
Articles in the same Issue
- Frontmatter
- Research articles
- A new species of phyllophoracean red algae (Gigartinales, Rhodophyta) from Korea: Stenogramma guleopensis sp. nov.
- Morphological and molecular studies on topotype material of Neoralfsia expansa (Phaeophyceae) reveal that Asian specimens assigned to this taxon are genetically distinct
- The occurrence of Dictyota canariensis (Dictyotales, Phaeophyceae) in the Gulf of Mexico
- Mapping Sargassum beds off the coast of Chon Buri Province, Thailand, using ALOS AVNIR-2 satellite imagery
- Scaly green flagellates from Spanish Atlantic coastal waters: molecular, ultrastructural and pigment analyses
- Transcriptome sequencing of the marine microalga, Chlorella pyrenoidosa (Chlorophyta), and analysis of carbonic anhydrase expression under salt stress
- An additional marine fungal lineage in the Diatrypaceae, Xylariales: Pedumispora rhizophorae
