Growth response of Dinophysis, Mesodinium, and Teleaulax cultures to temperature, irradiance, and salinity

•New isolates of T. amphioxeia and D. ovum established from the Gulf of Mexico.•Dinophysis ovum and Dinophysis acuminata growth was optimal at 18 – 24 °C and salinities 22 – 26.•D. acuminata and D. ovum have unique toxin profiles for North American region.•Dinophysis blooms in the Gulf of Mexico are likely initiated by temperature increase in spring.