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Pyropia lunae sp. nov. and Pyropia islae sp. nov. (Bangiales, Rhodophyta) from the Philippines

  • Richard V. Dumilag received his PhD degree from the University of the Philippines, Diliman. He is currently an assistant professor at the Far Eastern University, Manila. His interests involve red algal taxonomy and systematics.

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    and

    Sandra L. Yap obtained her PhD degree from the University of Michigan. She is a research fellow at the Far Eastern University, Manila. She also serves as the curator of the Far Eastern University Herbarium and as the research director of the University Research Center. Her research interests include plant phylogenetics and forest ecology.

Published/Copyright: September 4, 2018

Abstract

Challenges in morphology come to bear when assigning specific names in foliose Bangiales. Recent studies suggest that the integration of molecular and phenotypic data is essential, particularly in setting species boundaries and revealing the true species diversity of a given area. In an attempt to further elucidate the diversity of foliose Bangiales in the Philippines, two new species, Pyropia lunae sp. nov. and Pyropia islae sp. nov. are described. Each species differs from other closely related taxa by a combination of morphological and anatomical characters, and nucleotide sequences. Phylogenetic reconstruction based on rbcL gene sequences supports the sister relationship of P. lunae and Pyropia acanthophora, whereas P. islae is recovered as a species allied to Pyropia tanegashimensis and Pyropia denticulata. These two previously undescribed species increase the number of confirmed Philippine Pyropia species to four. So far, P. lunae and P. islae are found only from the Batanes Islands while P. acanthophora and P. tanegashimensis are known to extend their native distributions across into the Indo-Pacific waters. Questions remain, however, with regard to the true species diversity of foliose Bangiales in the Philippines. A wider sampling effort and the application of molecular methods will make it possible to resolve the remaining gaps in the taxonomy of Philippine foliose Bangiales.

About the authors

Richard V. Dumilag

Richard V. Dumilag received his PhD degree from the University of the Philippines, Diliman. He is currently an assistant professor at the Far Eastern University, Manila. His interests involve red algal taxonomy and systematics.

Sandra L. Yap

Sandra L. Yap obtained her PhD degree from the University of Michigan. She is a research fellow at the Far Eastern University, Manila. She also serves as the curator of the Far Eastern University Herbarium and as the research director of the University Research Center. Her research interests include plant phylogenetics and forest ecology.

Acknowledgments

We are grateful to M.A.D.M. Dumilag, E.C. Ame, R. Rivera, L. De La Cruz, and M.C. Morales for logistical assistance in the field and the staff of Bureau of Fisheries and Aquatic Resources, Region 2 (BFAR-RO2) especially to R.C. Andres, M. Figuro, and S. Castillo. We are also thankful to W.D. Monotilla, E. Cao, P.G. Vital, and I.K.C. Fontanilla for their additional comments on the initial draft of the manuscript. Financial support for this study was provided through a grant to R. V. Dumilag from the Philippine Council for Agriculture, Aquatic and Natural Resources Research and Development (DOST-PCAARRD) Science Education Institute through an Accelerated Science and Technology Human Resources Development Program (DOST-SEI ASTHRDP) and the Far Eastern University, University Research Center (FEU-URC). An additional grant was given by the International Association of Plant Taxonomy (IAPT) Research Grants Program in Plant Systematics to R.V. Dumilag. We acknowledge the two anonymous reviewers for their comments that greatly improved an initial version of the submission.

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Received: 2018-03-03
Accepted: 2018-08-07
Published Online: 2018-09-04
Published in Print: 2018-09-25

©2018 Walter de Gruyter GmbH, Berlin/Boston

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