A model for germ cell development in a fully segmented worm.

ABSTRACT:

Introduction

Polychaetes are segmented marine worms with body segments separated by a complete or incomplete septum. In most polychaetes the whole body cavity is filled with gametes during the breeding season. Platynereis dumerilii (Pl. dumerilii), which has an incomplete septum was shown to develop a single gonadal structure for gamete production located in the neck region. However, in Perinereis nuntia (Pe. nuntia), which has a complete septum separating each segment, the developmental feature of gametes remains unknown. To clarify this, the marker gene vasa was used to trace the development of germ cells throughout the life stages of Pe. nuntia.

Results

In three-segmented juveniles, Pn-vasa was expressed in the parapodia and in the two cells localized in the pygidium. Dur

SUBMITTER: Maceren-Pates M 

PROVIDER: S-EPMC4672553 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature