Molecular and morphological characterization of Digenea (Rhodomelaceae, Rhodophyta) in the Mexican Atlantic
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Martha Isabel Vilchis
,
Oscar E. Hernández
Abstract
Digenea is a widely distributed genus in the Mexican Atlantic, and until a few years ago the only morphospecies D. simplex was recorded. Recent molecular research on this species from a locality in the Mexican Caribbean revealed the new species D. mexicana, whose morphological similarity with specimens from Gulf of Mexico suggests that its distribution range could extend to this area. The aim of this work was to characterize the molecular and morphological characters of Digenea specimens from different sites in the Mexican Atlantic, to confirm this hypothesis and even reveal the presence of new species or records for the country. Our phylogenetic analysis of COI-5P and rbcL markers revealed a new record of D. arenahauriens in Mexico and confirm the presence of D. mexicana in the southern Gulf of Mexico. The species delimitation methods showed potential new species for Australia, Japan, and Brazil. The true D. simplex was not recorded molecularly for Mexico. Morphological comparisons indicated an overlap among most of the species of the genus. Future studies about molecular and morphological characterization of Digenea specimens from around the world could help to clarify the problem of specific delimitation, and even reveal new species for the genus.
About the authors
Martha Isabel Vilchis is currently a postdoctoral researcher at Universidad Autónoma de Yucatán. She is interested in biogeography, systematics, and conservation of marine algae.
Oscar E. Hernández is currently doing his PhD degree at Universidad Autónoma Metropolitana, where he is working in biogeography and systematics of marine algal species in Mexico.
Abel Sentíes is currently a professor-researcher of marine botany at Universidad Autónoma Metropolitana. He has spent over 35 years at the Marine Macroalgae Laboratory, focusing his research on systematics, biogeography, and conservation of seaweeds.
Kurt M. Dreckmann is a full-time professor at the Universidad Autonoma Metropolitana, where he received his PhD degree. For more than 35 years, his research has focused on ecology, taxonomy, biogeography, and phylogeny of marine algae.
Ileana Ortegón-Aznar is currently a full professor at Universidad Autónoma de Yucatán. She obtained her Ph.D. from Universidad Nacional Autónoma de México and has been dedicated to the study of marine macroalgae for 30 years, focusing her research on systematic, ecology and biogeography of algae.
Acknowledgements
We thank the anonymous reviewers for their valuable comments throughout the text.
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Author contributions: All the authors have actively contributed to this study and accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: OEH thanks the Consejo Nacional de Ciencia y Tecnología (CONACyT) for the scholarship granted to carry out the postgraduate studies (no. 302024). This study was supported by the Consejo Nacional de Ciencia y Tecnología through the Estancias Posdoctorales por México program, a scholarship granted to MIV (CVU: 566380). KM and AS thank for support the projects UAMI-CBS2019-2022 sesión 15.18-281118 y UAMI-CA-117, Programa para el Desarrollo Profesional Docente de la Secretaría de Educación Pública (PRODEP-SEP).
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Conflict of interest statement: The authors declare that they have no conflicts of interest regarding this article.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/bot-2022-0039).
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Artikel in diesem Heft
- Frontmatter
- In this issue
- Physiology and Ecology
- Brazil-Malvinas Confluence in the South-West Atlantic Ocean: phytoplankton species, life forms and trophic mode
- Spatial and temporal variations of macroalgal vegetation in the north-western Red Sea
- Taxonomy/Phylogeny and Biogeography
- Phylogeographic patterns in attached and free-living marine macroalga Fucus vesiculosus (Fucaceae, Phaeophyceae) in the Baltic Sea
- Molecular and morphological characterization of Digenea (Rhodomelaceae, Rhodophyta) in the Mexican Atlantic
- Chemistry and Applications
- Kelp nursery optimisation: density-dependent effects in early life-cycle stages of Ecklonia radiata (Laminariales)
- Corrigendum
- Corrigendum to: Morphological and molecular studies on the genus Gayralia (Ulotrichales, Chlorophyta) in northeastern Brazil with expansion of its species distribution
Artikel in diesem Heft
- Frontmatter
- In this issue
- Physiology and Ecology
- Brazil-Malvinas Confluence in the South-West Atlantic Ocean: phytoplankton species, life forms and trophic mode
- Spatial and temporal variations of macroalgal vegetation in the north-western Red Sea
- Taxonomy/Phylogeny and Biogeography
- Phylogeographic patterns in attached and free-living marine macroalga Fucus vesiculosus (Fucaceae, Phaeophyceae) in the Baltic Sea
- Molecular and morphological characterization of Digenea (Rhodomelaceae, Rhodophyta) in the Mexican Atlantic
- Chemistry and Applications
- Kelp nursery optimisation: density-dependent effects in early life-cycle stages of Ecklonia radiata (Laminariales)
- Corrigendum
- Corrigendum to: Morphological and molecular studies on the genus Gayralia (Ulotrichales, Chlorophyta) in northeastern Brazil with expansion of its species distribution
