Epitokous

Epitokous

 

abrupt changes in the body structure of many creeping worms of the class Polychaeta. Epitokous occurs in the period of sexual reproduction, when the worms become adapted to swimming. It sometimes involves only those parts of the body containing eggs or sperm, usually the posterior segments. As a result there is a sharp division of the body into a sexless anterior section, or atoke, and a sexual posterior section, or epitoke. The latter usually detaches and swims independently, dispersing eggs or sperm.

References in periodicals archive ?
lucipeta based upon some atokous and epitokous specimens collected in Southern Angola.
Morphogenesis of epitokous setae during normal and induced metamorphosis in the polychaete annelid Nereis grubei.
Placement of these specimens in this genus is dubious since they have slender notoseate, suggesting that all of them are epitokous forms.