An insight into the cryptic diversity of Fragilariaceae (Bacillariophyta), with the description of a new Antarctic species, Gedaniella antarctica sp. nov ...

• Main Authors: Trentin, Riccardo, Moschin, Emanuela, Schiaparelli, Stefano, Moro, Isabella
• Format: Dataset
• Language: unknown
• Published: Taylor & Francis 2024
• Subjects: Microbiology; FOS Biological sciences; Evolutionary Biology; Environmental Sciences not elsewhere classified; Ecology; Biological Sciences not elsewhere classified; Marine Biology; Plant Biology; Antarc*; Antarctic; Antarctica
• Online Access: https://dx.doi.org/10.6084/m9.figshare.26362753; https://tandf.figshare.com/articles/dataset/An_insight_into_the_cryptic_diversity_of_Fragilariaceae_Bacillariophyta_with_the_description_of_a_new_Antarctic_species_i_Gedaniella_antarctica_i_sp_nov/26362753

Fragilariaceae is a paraphyletic family of araphid diatoms commonly used as bio-indicators, in environmental assessments and in paleoenvironmental reconstructions, and with various potential industrial applications. Recent molecular taxonomic research has highlighted significant limitations in traditional morphology-based investigations of these diatom species. Most descriptions of species and genera of the Fragilariaceae present broad morphological character definitions and many diagnostic characters are indistinguishable by light microscopy. In this sense, taxon misidentification is common and could have serious implications for environmental surveys and laboratory experiments. To better understand the diversity of the Fragilariaceae, we (1) performed phylogenetic analyses of the small subunit ribosomal RNA (18S rRNA), rbc L and psb C gene sequences, (2) inferred a cladogram from key morphological features used in the traditional identification of Fragilariaceae, (3) tested if the topologies of the tree ...