Fig. 6From: Variation of sperm morphology in Pacific oyster precludes its use as a species marker but enables intraspecific geo-authentification and aquatic monitoringPacific oyster Crassostrea gigas. The diagrams show the proportions of sperm morphs that are characteristic for different geographic locations of Primorye. a Amursky Bay; b Eastern Bosphorus Strait; c Ussuriisky Bay; d Vostok Bay. Sperm morphs 1–6 correspond to Fig. 5a–f respectivelyBack to article page