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Fig. 2 | Helgoland Marine Research

Fig. 2

From: In the Asia-Pacific region, the COI DNA test revealed the divergence of the bivalve mollusc Mactra chinensis into three species; can these species be distinguished using shell coloration and sperm structure?

Fig. 2

Phylogenetic trees inferred by Bayesian analysis (BI), maximum likelihood (ML) and neighbor-joining (NJ) of Mactra chinensis and congeneric species based on available sequence data from the barcode region of mtDNA gene COI. Numbers adjacent to nodes refer to BI posterior probability (PP), ML bootstrap scores (BS) and NJ bootstrap scores (BS). Different candidate species inferred from Automatic Barcode Gap Discovery (ABGD) analysis were grouped by bars beside the sequences. The sequences resulting from this study are shown in bold. Clades of M. chinensis are marked with different colors; blue (COI clade I)—samples collected in the Sea of Japan (Russia) (YARRA073-12/RRYA-73; YARRA074-12/RRYA-74; YARRA075-12/RRYA-75;); pink (COI clade II)—samples collected in the Gyeongsanbuk region of the Sea of Japan (South Korea) (YARRA071-12/RRYA-71; YARRA072-12/RRYA-72); green (COI clade III)—samples collected in the Yantai area of Yellow Sea (China) (ABCBF460-19, ABCBF461-19, ABCBF462-19, ABCBF463-19). Note the samples collected in the Yellow Sea near Yantai (green and bold—ABCBF460-19, ABCBF461-19, ABCBF462-19, ABCBF463-19) and samples collected in the Yellow Sea near Weihai (green and bold—MT791493, MT791494, MT791495, MT791496), which belong to one clade (COI clade III; green color)

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Helgoland Marine Research

ISSN: 1438-3888

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