At present, two native lamprey species occur in the Czech Republic, namely the brook lamprey and the Ukrainian lamprey. Lampreys: Evolution, Distribution and Use in Research begins by summarizing the available knowledge about the biology, ecology, distribution, monitoring of occurrence and action plans/recovery programmes for the aforementioned species.Following this, the occurrence of lampreys of the genus Lethenteron in 19 rivers and one lake in Sakhalin Island is documented, and sex differences in adults in respect to morphometric parameters are also presented.Mammalian blood clotting is...