Resumen

MIRELES-VAZQUEZ, Alejandra  y  NOVELO, Eberto. Algae diversity and new records of Xanthophyceae and Eustigmatophyceae (Heterokontophyta) in the central region of Mexico. Rev. Mex. Biodiv. [online]. 2026, vol.97, e975662.  Epub 12-Ene-2026. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2026.97.5662.

Heterokontophyta includes a wide variety of algae with different levels of organization, environments, presence of pigments and even evolutionary lines. In Mexico, 72 species of inland waters belonging to the classes Xanthophyceae and Eustigmatophyceae have been recorded from different approaches: floristic, ecological, limnological, morphometric, chemical and phylogenetic. To understand the diversity of golden algae in the central region of Mexico and update the records in specialized national databases, material was collected in eight bodies of water in the central region, at each site 10 L were filtered with a phytoplankton net. Cultures were developed from some samples that allowed obtaining images with a scanning electron microscope. A similarity analysis was performed with the Jaccard index and a grouping of the sites using environmental variables. Eighteen species of algae from the classes Xanthophyceae (10) and Eustigmatophyceae (8) were identified and characterized, 6 of which are new records for the country. The analyses show a very particular characterization of the sites and distribution of the species, since the similarity values are from 0.125 to 0.33. With these results we update the panorama of golden algae in the central region and their distribution.

Palabras llave : Continental algae; Floristic; Heterokontophyta.

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