The Preference of Anadromous Sturgeon Species Regarding Temperature and Depth Parameters During Spawning Migration in The Lower Danube

Abstract

Anadromous sturgeon populations in the Lower Danube are in severe decline, and this is due to a combination of anthropogenic and natural factors that have a major impact on the life cycle of the species. Stationary swimming parameters, namely water temperature and depth, represent the starting point for developing the best procedures to identify breeding habitats and subsequently develop the best conservation measures in the context of anthropogenic impacts and climate change. According to current data, Acipenser gueldenstaedtii is the most endangered species, as it is the rarest species captured through scientific fishing and has highest temperature sensitivity of the three taxa studied.