A Ab bs st tr ra ac ct t. . Present review paper tries to show the main aspects of migration of fishes in Romanian sector of Danube River. The Danube River has a large hydrographical basin, being the second largest river in Europe. The main channel flows trough seven European countries. There are many species of fish that annually or seasonally migrate either for reproduction or feeding in different areas of Danube and its main tributaries. K Ke ey yw wo or rd ds s: : migration, fish, capture dynamic, Danube, fulton factor, protection I In nt tr ro od du uc ct ti io on n Some recent studies [8] have increasingly demonstrated the widespread existence of spatial and temporal variations in the abundance and distribution of the populations of freshwater fishes, many of them previously assumed not to move between habitats. These movements are based on seasonal or ontogenetic causes, for spawning, feeding and refuge, and in many cases are crucial for the successful completion of the fish lifecycles [15]. This text tries to cover the incidence and types of migration exhibited by the freshwater and anadromous fishes in the Romanian Danube River and their different capacity and stimulus related to the migration.

A Ab bs st tr ra ac ct t. . The main purpose of this paper is to actualize last data on Danube shad (Alosa pontica Eichwald, 1838) migration process in Danube River. This species was widely studied last time in Danube River, but there are still some biological and ecological aspects to be revealed. Study of periodical changes in the total amount of capture and spawners structure could bring more and relevant information on presumed cyclic decrease and increase of stocks and also about the main causes of their interesting population dynamics. We try to examine some other aspects related to the spawning biology as well as to the biometry of different age-classes and also to link these issues to the last changes in environment conditions.

No abstract

No abstract