Axonemal Growth and Alignment During Paraspermatogenesis in the Marine Gastropod Strombus luhuanus.

ABSTRACT: Parasperm are non-fertilizing sperm that are produced simultaneously with fertile eusperm. They occur in several animal species and show considerable morphological diversity. We investigated the dynamics of axonemes during paraspermatogenesis in the marine snail S. luhuanus. Mature parasperm were characterized by two lateral undulating membranes for motility and many globular vesicles. Axonemes were first observed as brush-like structures that extruded from the anterior region. Multiple axonemes longer than the brush then started to extend inside the cytoplasm towards the posterior region. The mass of the axonemes separated into two lateral rows and formed an undulating membrane that drives bidirectional swimming in the mature parasperm. The central pair of axonemes was aligned in t

SUBMITTER: Shibata D 

PROVIDER: S-EPMC9271582 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature