Franklin, Luther E.Clark, Wallis H., Jr.2022-06-202022-06-2019762713603https://hdl.handle.net/10657/9460Mature penaeid oocytes contain large membrane-bound cortical specializations (rods) in their cortex. The rods are composed of feathery elements consisting of a dense axis with numerous fibrillar projections perpendicular to the axis. Prior to spawning, the cortical rods move to the periphery of the oocyte where membrane fusion takes place between the oolemma and the rod's bounding membrane. At spawning the cortical rods are expelled from the oocyte to form a striking investment layer which rapidly dissipates. During the cortical rod dissipation a hatching membrane forms around the egg. [...]application/pdfenThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.Thesisreformatted digital