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May 6, 2026Botanica Marina0 citationsOpen Access

Morphological and molecular analysis of Pseudo-nitzschia in Antarctic waters

Morphological characteristics and molecular identification of Pseudo-nitzschia meridionalis and Pseudo-nitzschia glacialis (Bacillariophyceae) from Antarctic waters

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Authors

ISInna V. StonikKEKseniya V. Efimova

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Overview

Morphological characteristics affect distribution of Pseudo-nitzschia species, suggesting molecular identification is essential.

Key Points

  • To describe the morphological and molecular characteristics of Pseudo-nitzschia meridionalis and Pseudo-nitzschia glacialis in the Southern Ocean.
  • Field samples collected from the Weddell Sea and adjacent waters
  • Morphological description of two Pseudo-nitzschia species
  • Phylogenetic analysis using ITS1-5.8S rDNA-ITS2
  • Identified variations in poroid ultrastructure for P. meridionalis
  • Detailed morphological characteristics of P. glacialis, including variable striae and poroids
  • Updated distribution information for P. meridionalis and P. glacialis

Cite This Study

Stonik et al. (2026) studied this question.

synapsesocial.com/papers/69fa989404f884e66b532600https://doi.org/10.1515/bot-2025-0088
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