Correlativity between neural complex and gonadal development in Styela plicata

IT has been demonstrated that two reproductive hormones,gonadotropin-releasing hormone(GnRH)and gonadotropin(GTH),exist in the nervous system and Hatschek’s pit oflancelet,a species of Cephalochordata,and that these hormones are involved in the regulationof gonadal development and reproductive activity of lancelet.However,no report could