Fig. 2From: Variation of sperm morphology in Pacific oyster precludes its use as a species marker but enables intraspecific geo-authentification and aquatic monitoringNeighbor-joining (NJ) phylogram generated from COI data within the Pacific oyster Crassostrea gigas (the length of sequences is 642 bp) (first dataset). Numbers above or below the branches are NJ bootstrapBack to article page