Development of Lecithotrophic Trochophore-like pilidium nielseni Found in Five Lineiform Species (Lineidae; Heteronemertea; Pilidiophora; Nemertea) from Oregon

Simple item page
dc.contributor.advisorMaslakova, Svetlana
dc.contributor.authorHunt, Marie
dc.date.accessioned2016-10-27T18:58:53Z
dc.date.available2016-10-27T18:58:53Z
dc.date.issued2016-10-27
dc.description.abstractThe pilidium larva is an idiosyncrasy defining the Pilidiophora. Its development is unique, and conserved even in derived pilidia; the juvenile is formed via a series of invaginations of the larval epidermis (imaginal discs), then bursts through the larval body while simultaneously consuming it in catastrophic metamorphosis. Pilidium nielseni is a lecithotrophic pilidium with two circumferential ciliary bands reminiscent of the “prototroch” and “telotroch” of a trochophore larva, the ancestral larval form of spiralians. However, pilidium nielseni represents a convergence on this larval form, not the resurgence of the ancestral larva, and typical pilidial development is conserved. In this thesis, I describe the development of pilidium nielseni, and determine it has converged on its body plan at least twice, independently.en_US
dc.identifier.urihttps://hdl.handle.net/1794/20557
dc.language.isoen_US
dc.publisherUniversity of Oregon
dc.rightsAll Rights Reserved.
dc.subjectlecithotrophic developmenten_US
dc.subjectNemerteaen_US
dc.subjectPilidiumen_US
dc.titleDevelopment of Lecithotrophic Trochophore-like pilidium nielseni Found in Five Lineiform Species (Lineidae; Heteronemertea; Pilidiophora; Nemertea) from Oregon
dc.typeElectronic Thesis or Dissertation
thesis.degree.disciplineDepartment of Biology
thesis.degree.grantorUniversity of Oregon
thesis.degree.levelmasters
thesis.degree.nameM.S.

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Hunt_oregon_0171N_11650.pdf
Size:
45.99 MB
Format:
Adobe Portable Document Format
Download

Collections

Theses and Dissertations
Biology Theses and Dissertations