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Figure 1

From: Disjunct habitat of cryptic Terebellides (Annelida, Trichobranchidae) species shows a phylogenetic link between polychaetes from the White and the North Seas

Figure 1

Phylogenetic tree based on the analysis of combined sequences of four fragments: mitochondrial (COI, 16S rDNA) and nuclear (ITS2, 28S rDNA), totaling approximately 2574/2474 aligned positions, constructed using the BA method. The sequences, represented by numbers, were retrieved from Nygren et al. study5, and some were obtained in the present study (bold numbers). Clade numbers are from Nygren et al. study5. Clades 4 and 12 refers to undescribed species in the study by Nygren and colleagues, previously not reported in the White Sea. The nodes are marked with Bayesian posterior probabilities (PP). Biogeographical regions where the specimens of each clade were collected are indicated by color circles: Kattegat (purple), Skagerrak (dark green), North Sea (light green), Irish Sea and Celtic Sea (orange), Norwegian coast and shelf (red), Norwegian Sea (brown), Barents Sea (dark blue), Arctic Ocean (pink-red), Greenland Sea (yellow), South Iceland (light blue) – marked according to the study by Nygren and colleagues5; White Sea (light pink) indicate the geographical region for the samples 2307, 2308 and 2310, collected in the present study. Formally described species are shown according to the Nygren and colleagues5 Terebellides irinae (ir), T. atlantis (at), T. bigeniculatus (bi), and T. shetlandica (sh).

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