Insights into spawning behavior and development of the European amphioxus (Branchiostoma lanceolatum).

The cephalochordate amphioxus (Branchiostoma sp.) is an important animal model for studying the evolution of chordate developmental mechanisms. Obtaining amphioxus embryos is a key step for these studies.

Preliminary observations on the spawning conditions of the European amphioxus (Branchiostoma lanceolatum) in captivity.

Members of the subphylum Cephalochordata, which include the genus Branchiostoma (i.e. amphioxus), represent the closest living invertebrate relatives of the vertebrates.