Remodeling of the Platynereis Musculature during Sexual Maturation.

ABSTRACT:

Background

The external transformations associated with sexual maturation in Platynereis dumerilii (Audouin and Milne Edwards) are well studied, whereas the internal changes along the body axis have not been systematically analyzed. Therefore, we examined muscle morphology in body regions located anterior or posterior to the prospective atokous/epitokous border to generate a structural basis for internal transformations.

Results

All dorsal and ventral longitudinal muscles were significantly reduced in size and density after sexual maturation and strongly atrophied, with the greatest decrease in the anterior segments of females. Despite the general reduction in size throughout the longitudinal muscles, we found a specific degradation mechanism for the posterior segment

SUBMITTER: Dahlitz I 

PROVIDER: S-EPMC9953025 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature