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. 2020 Sep 28;15(9):e0230547. doi: 10.1371/journal.pone.0230547

Fig 3. Phylogenetic relationships within the Hydra genus based on the analysis of the Cytochrome Oxydase I (COI) DNA sequences.

Fig 3

The maximum likelihood tree of the COI sequences was built by adding to the dataset of 85 COI sequences available on Genbank [15] the 10 sequences obtained in the present study (written red, indicated with red arrows, see S2 Table for accession numbers). Black dots indicate the robustness of the nodes as deduced from the bootstrap support (at least 750 over 1’000 bootstraps). This tree confirms that the sequences obtained in this study distribute into the expected Hydra groups, Nicolet strain in H. viridissima, Ho_CR and Ho_CS in H. oligactis, Hm-105, sf-1, reg-16, Basel-1 and Basel-2 in H. vulgaris-Pallas, AEP1, AEP2 in the H.vulgaris-NA sub-group.