Topic summary
Epitoke
Extracted from the Wikipedia article Epitoky.
Epigamy
In the past, epitokes were thought to be a separate group of polychaete marine worms, because epitokes may look very different than atokes. For instance, the atokes of Platynereis dumerilii are yellowish-brown, while the female epitokes are yellow because of the eggs they contain, and the male epitokes are white in the front part due to sperm and red in the hind part due to blood vessels (see pictures).