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Gracilaria coppejansii sp. nov. (Gracilariales, Rhodophyta), a new flattened species from the Andaman coast of southern Thailand

  • Narongrit Muangmai earned his PhD degree in marine biology from Victoria University of Wellington. He presently works as a lecturer in the Department of Fishery Biology, Kasetsart University, Thailand. His major field of research includes the taxonomy, evolution and biogeography of marine macroalgae. His current research focuses on diversity and phylogeography of economically important red algal genus Gracilaria in the Southeast Asian region.

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    Khanjanapaj Lewmanomont is an emeritus professor of fishery biology at Kasetsart University. She obtained her MSc degree in fisheries from the University of Michigan. Her major research interests are on taxonomy, ecology and cultivation of marine algae. She is currently working in Plant Genetic Conservation Project under the Royal Initiation of Her Royal Highness Princess Maha Chakri Sirindhorn (RSPG).

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    Anchana Prathep leads the Seaweed and Seagrass Research Unit at Prince of Songkla University, Thailand. Her work focuses on seaweed and seagrass ecology and their ecosystem services. Recently, she has been trying to understand how much seaweeds and seagrasses contribute to carbon sequestration and storage, as well as how they respond to a changing world.

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    Ryuta Terada is a professor at the United Graduate School of Agricultural Sciences, Kagoshima University. His research is particularly focused on the diversity and ecophysiology of marine macroalgae in relation to climate change.

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    Giuseppe C. Zuccarello is interested in the taxonomy, evolution and speciation of algae. His research has focused on mangrove-associate red algae of the genus Bostrychia and Caloglossa. He received his PhD degree from the University of California Berkeley. He has been president of the International Phycological Society and is currently an associate professor at Victoria University of Wellington. He has published over 130 peer-reviewed papers.
Published/Copyright: July 29, 2017
Botanica Marina
From the journal Botanica Marina Volume 60 Issue 5

Abstract

Studies of the taxonomy and diversity of flattened Gracilaria species which occur commonly in coastal areas of Thailand are few and underestimate species richness. Recently, flattened Gracilaria plants were collected along the west coast of southern Thailand (Andaman Sea). We describe a new flattened Gracilaria species, Gracilaria coppejansii Muangmai, Lewmanomont, Prathep, Terada et Zuccarello sp. nov., from Phuket Island on the basis of comparative morphology and rbcL sequence analyses of these samples. The new species is mainly characterized by thalli with dichotomous branching, numerous proliferations on the blade margin of female gametophytes, textorii-type spermatangial conceptacles and a few nutritive filamentous cells in mature cystocarps. Morphologically, G. coppejansii most closely resembles Gracilaria textorii but differs in some morpho-anatomical characteristics of the blade and female reproductive structures. rbcL sequence analyses also clearly demonstrated that G. coppejansii was genetically distinct from other flat Gracilaria species. Gracilaria coppejansii was phylogenetically positioned close to Gracilaria lantaensis, a recently described flattened species also on the west coast of Thailand.

Keywords: Gracilariaceae; macroalgae; rbcL; Rhodophyta; taxonomy

About the authors

Narongrit Muangmai

Narongrit Muangmai earned his PhD degree in marine biology from Victoria University of Wellington. He presently works as a lecturer in the Department of Fishery Biology, Kasetsart University, Thailand. His major field of research includes the taxonomy, evolution and biogeography of marine macroalgae. His current research focuses on diversity and phylogeography of economically important red algal genus Gracilaria in the Southeast Asian region.

Khanjanapaj Lewmanomont

Khanjanapaj Lewmanomont is an emeritus professor of fishery biology at Kasetsart University. She obtained her MSc degree in fisheries from the University of Michigan. Her major research interests are on taxonomy, ecology and cultivation of marine algae. She is currently working in Plant Genetic Conservation Project under the Royal Initiation of Her Royal Highness Princess Maha Chakri Sirindhorn (RSPG).

Anchana Prathep

Anchana Prathep leads the Seaweed and Seagrass Research Unit at Prince of Songkla University, Thailand. Her work focuses on seaweed and seagrass ecology and their ecosystem services. Recently, she has been trying to understand how much seaweeds and seagrasses contribute to carbon sequestration and storage, as well as how they respond to a changing world.

Ryuta Terada

Ryuta Terada is a professor at the United Graduate School of Agricultural Sciences, Kagoshima University. His research is particularly focused on the diversity and ecophysiology of marine macroalgae in relation to climate change.

Giuseppe C. Zuccarello

Giuseppe C. Zuccarello is interested in the taxonomy, evolution and speciation of algae. His research has focused on mangrove-associate red algae of the genus Bostrychia and Caloglossa. He received his PhD degree from the University of California Berkeley. He has been president of the International Phycological Society and is currently an associate professor at Victoria University of Wellington. He has published over 130 peer-reviewed papers.

Acknowledgments

We thank the following persons for their kind help during our field collection trip: Drs. Bongkot Wichachucherd, Ekkalak Rattanachot, Jaruwan Mayakun and Supattra Pongparadon; Mr. Anuchit Darakrai. We are also grateful to Maren Preuss for technical support. This study is financially supported by the Plant Genetic Conservation Project under the Royal Initiative of Her Royal Highness Princesss Maha Chakri Sirindhon (RSPG), National Research Council Thailand (NRCT) and Japan Society for the Promotion of Science (JSPS) Core-to-Core Program, B. Asia-Africa Science Platforms.

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Supplemental Material:

The online version of this article offers supplementary material (https://doi.org/10.1515/bot-2017-0028).

Received: 2017-3-22
Accepted: 2017-7-4
Published Online: 2017-7-29
Published in Print: 2017-8-28

©2017 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Taxonomy/phylogeny and biogeography
  4. Neoharaldiophyllum, a new genus of Delesseriaceae (Rhodophyta) based on carposporophyte development and molecular data
  5. Gracilaria coppejansii sp. nov. (Gracilariales, Rhodophyta), a new flattened species from the Andaman coast of southern Thailand
  6. Morphological and phenological reexamination of the threatened endemic species Gelidium canariense (Gelidiales, Rhodophyta) from the Canary Islands
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  8. Morphological and molecular characterization of Hapalospongidion gelatinosum, Hapalospongidiaceae fam. nov. (Ralfsiales, Phaeophyceae) from Mexico
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https://doi.org/10.1515/bot-2017-0028
Keywords for this article
Gracilariaceae; macroalgae; rbcL; Rhodophyta; taxonomy

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Taxonomy/phylogeny and biogeography
  4. Neoharaldiophyllum, a new genus of Delesseriaceae (Rhodophyta) based on carposporophyte development and molecular data
  5. Gracilaria coppejansii sp. nov. (Gracilariales, Rhodophyta), a new flattened species from the Andaman coast of southern Thailand
  6. Morphological and phenological reexamination of the threatened endemic species Gelidium canariense (Gelidiales, Rhodophyta) from the Canary Islands
  7. Capensia fucorum (Esper) gen. et comb. nov. (Mesophyllaceae, Corallinales, Rhodophyta), a hemiparasite on Gelidium from South Africa
  8. Morphological and molecular characterization of Hapalospongidion gelatinosum, Hapalospongidiaceae fam. nov. (Ralfsiales, Phaeophyceae) from Mexico
  9. First record of Ruppia maritima in West Africa supported by morphological description and phylogenetic classification
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