Fig. 3From: Variation of sperm morphology in Pacific oyster precludes its use as a species marker but enables intraspecific geo-authentification and aquatic monitoringNeighbor-joining (NJ) tree analysis of the COI sequences for the Pacific oyster Crassostrea gigas (the length of sequences 345 bp) (second dataset). Numbers above or below the branches are bootstrap values of the NJ analysisBack to article page