Modes Of The Intercommunication Within Intrageneric Forms Of Lampreys

Lampreys of genera Lampetra and Lethenteron are an important component of the aquatic ecosystems in the Northern part of Eurasia. In this region, the genera have various life history forms: marine (typical, praecox), lake, river and brook which are very closely related genetically, biological and ethological. In this presentation are shown data on typical modes of the intrageneric intercommunication, based on analysis of app. 200. For the first time, rigorous amounts of previously published and authors’ own experimental data, observations and Russian historical documents, normally unobtainable for English speaking researchers, have been comprehensively analyzed. The presentation leads to the understanding of forms belonging to the same species.