Natural co-occurrence of Dinophysis acuminata (Dinoflagellata) and Mesodinium rubrum (Ciliophora) in thin layers in a coastal inlet.

摘要: .  The interdependency of Dinophysis spp., Mesodinium rubrum and Teleaulax spp. has occupied scientists in molecular ecological domains recent years. Current knowledge about the predator–prey relationships is based on laboratory investigations. Records interactions nature are limited, even though it known that acuminata M. form population maxima thin layers associated with thermal stratification. We studied vertical co-occurrence these taxa a stratified coastal inlet Aland, Northern Baltic Sea, SW Finland. Vertical profiles were sampled monthly summer 2008 observations diurnal migrational patterns all species conducted September 2008. maximum D. was almost totally confined to where depth present. However, this pattern only observed early morning or at noon. overlapped restricted upper 9 m but found down 20 m depth. This study offers circumstantial evidence for between three nature.